Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.app; |
| 18 | |
Chet Haase | a18a86b | 2010-09-07 13:20:00 -0700 | [diff] [blame] | 19 | import android.animation.Animator; |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 20 | import android.annotation.NonNull; |
Tor Norbye | d9273d6 | 2013-05-30 15:59:53 -0700 | [diff] [blame] | 21 | import android.annotation.Nullable; |
Tor Norbye | 7b9c912 | 2013-05-30 16:48:33 -0700 | [diff] [blame] | 22 | import android.annotation.StringRes; |
Dianne Hackborn | c68c913 | 2011-07-29 01:25:18 -0700 | [diff] [blame] | 23 | import android.content.ComponentCallbacks2; |
Dianne Hackborn | b1ad597 | 2010-08-02 17:30:33 -0700 | [diff] [blame] | 24 | import android.content.Context; |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 25 | import android.content.Intent; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 26 | import android.content.res.Configuration; |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 27 | import android.content.res.Resources; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 28 | import android.content.res.TypedArray; |
Adam Powell | 592df7d | 2016-01-14 12:58:23 -0800 | [diff] [blame] | 29 | import android.os.Build; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 30 | import android.os.Bundle; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 31 | import android.os.Parcel; |
| 32 | import android.os.Parcelable; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 33 | import android.transition.Transition; |
| 34 | import android.transition.TransitionInflater; |
| 35 | import android.transition.TransitionSet; |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 36 | import android.util.AndroidRuntimeException; |
Dianne Hackborn | 3e82ba1 | 2013-07-16 13:23:55 -0700 | [diff] [blame] | 37 | import android.util.ArrayMap; |
Dianne Hackborn | ba51c3d | 2010-05-05 18:49:48 -0700 | [diff] [blame] | 38 | import android.util.AttributeSet; |
Dianne Hackborn | a2ea747 | 2010-12-20 12:10:01 -0800 | [diff] [blame] | 39 | import android.util.DebugUtils; |
Dianne Hackborn | 03fcc33 | 2012-05-15 12:49:40 -0700 | [diff] [blame] | 40 | import android.util.Log; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 41 | import android.util.SparseArray; |
Adam Powell | 1487466 | 2013-07-18 19:42:41 -0700 | [diff] [blame] | 42 | import android.util.SuperNotCalledException; |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 43 | import android.view.ContextMenu; |
Adam Powell | f0f5fff | 2011-08-01 13:42:50 -0700 | [diff] [blame] | 44 | import android.view.ContextMenu.ContextMenuInfo; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 45 | import android.view.LayoutInflater; |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 46 | import android.view.Menu; |
| 47 | import android.view.MenuInflater; |
| 48 | import android.view.MenuItem; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 49 | import android.view.View; |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 50 | import android.view.View.OnCreateContextMenuListener; |
Adam Powell | f0f5fff | 2011-08-01 13:42:50 -0700 | [diff] [blame] | 51 | import android.view.ViewGroup; |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 52 | import android.widget.AdapterView; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 53 | |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 54 | import java.io.FileDescriptor; |
| 55 | import java.io.PrintWriter; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 56 | |
| 57 | final class FragmentState implements Parcelable { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 58 | final String mClassName; |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 59 | final int mIndex; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 60 | final boolean mFromLayout; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 61 | final int mFragmentId; |
| 62 | final int mContainerId; |
| 63 | final String mTag; |
| 64 | final boolean mRetainInstance; |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 65 | final boolean mDetached; |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 66 | final Bundle mArguments; |
Todd Kennedy | d6d1858 | 2015-07-23 10:19:46 -0700 | [diff] [blame] | 67 | final boolean mHidden; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 68 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 69 | Bundle mSavedFragmentState; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 70 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 71 | Fragment mInstance; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 72 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 73 | public FragmentState(Fragment frag) { |
| 74 | mClassName = frag.getClass().getName(); |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 75 | mIndex = frag.mIndex; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 76 | mFromLayout = frag.mFromLayout; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 77 | mFragmentId = frag.mFragmentId; |
| 78 | mContainerId = frag.mContainerId; |
| 79 | mTag = frag.mTag; |
| 80 | mRetainInstance = frag.mRetainInstance; |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 81 | mDetached = frag.mDetached; |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 82 | mArguments = frag.mArguments; |
Todd Kennedy | d6d1858 | 2015-07-23 10:19:46 -0700 | [diff] [blame] | 83 | mHidden = frag.mHidden; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 84 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 85 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 86 | public FragmentState(Parcel in) { |
| 87 | mClassName = in.readString(); |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 88 | mIndex = in.readInt(); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 89 | mFromLayout = in.readInt() != 0; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 90 | mFragmentId = in.readInt(); |
| 91 | mContainerId = in.readInt(); |
| 92 | mTag = in.readString(); |
| 93 | mRetainInstance = in.readInt() != 0; |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 94 | mDetached = in.readInt() != 0; |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 95 | mArguments = in.readBundle(); |
Todd Kennedy | d6d1858 | 2015-07-23 10:19:46 -0700 | [diff] [blame] | 96 | mHidden = in.readInt() != 0; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 97 | mSavedFragmentState = in.readBundle(); |
| 98 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 99 | |
Adam Powell | 44ba79e | 2016-02-04 16:20:37 -0800 | [diff] [blame] | 100 | public Fragment instantiate(FragmentHostCallback host, Fragment parent, |
| 101 | FragmentManagerNonConfig childNonConfig) { |
| 102 | if (mInstance == null) { |
| 103 | final Context context = host.getContext(); |
| 104 | if (mArguments != null) { |
| 105 | mArguments.setClassLoader(context.getClassLoader()); |
| 106 | } |
| 107 | |
| 108 | mInstance = Fragment.instantiate(context, mClassName, mArguments); |
| 109 | |
| 110 | if (mSavedFragmentState != null) { |
| 111 | mSavedFragmentState.setClassLoader(context.getClassLoader()); |
| 112 | mInstance.mSavedFragmentState = mSavedFragmentState; |
| 113 | } |
| 114 | mInstance.setIndex(mIndex, parent); |
| 115 | mInstance.mFromLayout = mFromLayout; |
| 116 | mInstance.mRestored = true; |
| 117 | mInstance.mFragmentId = mFragmentId; |
| 118 | mInstance.mContainerId = mContainerId; |
| 119 | mInstance.mTag = mTag; |
| 120 | mInstance.mRetainInstance = mRetainInstance; |
| 121 | mInstance.mDetached = mDetached; |
| 122 | mInstance.mHidden = mHidden; |
| 123 | mInstance.mFragmentManager = host.mFragmentManager; |
| 124 | if (FragmentManagerImpl.DEBUG) Log.v(FragmentManagerImpl.TAG, |
| 125 | "Instantiated fragment " + mInstance); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 126 | } |
Adam Powell | 44ba79e | 2016-02-04 16:20:37 -0800 | [diff] [blame] | 127 | mInstance.mChildNonConfig = childNonConfig; |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 128 | return mInstance; |
| 129 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 130 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 131 | public int describeContents() { |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | public void writeToParcel(Parcel dest, int flags) { |
| 136 | dest.writeString(mClassName); |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 137 | dest.writeInt(mIndex); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 138 | dest.writeInt(mFromLayout ? 1 : 0); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 139 | dest.writeInt(mFragmentId); |
| 140 | dest.writeInt(mContainerId); |
| 141 | dest.writeString(mTag); |
| 142 | dest.writeInt(mRetainInstance ? 1 : 0); |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 143 | dest.writeInt(mDetached ? 1 : 0); |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 144 | dest.writeBundle(mArguments); |
Todd Kennedy | d6d1858 | 2015-07-23 10:19:46 -0700 | [diff] [blame] | 145 | dest.writeInt(mHidden ? 1 : 0); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 146 | dest.writeBundle(mSavedFragmentState); |
| 147 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 148 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 149 | public static final Parcelable.Creator<FragmentState> CREATOR |
| 150 | = new Parcelable.Creator<FragmentState>() { |
| 151 | public FragmentState createFromParcel(Parcel in) { |
| 152 | return new FragmentState(in); |
| 153 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 154 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 155 | public FragmentState[] newArray(int size) { |
| 156 | return new FragmentState[size]; |
| 157 | } |
| 158 | }; |
| 159 | } |
| 160 | |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 161 | /** |
| 162 | * A Fragment is a piece of an application's user interface or behavior |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 163 | * that can be placed in an {@link Activity}. Interaction with fragments |
| 164 | * is done through {@link FragmentManager}, which can be obtained via |
| 165 | * {@link Activity#getFragmentManager() Activity.getFragmentManager()} and |
| 166 | * {@link Fragment#getFragmentManager() Fragment.getFragmentManager()}. |
| 167 | * |
| 168 | * <p>The Fragment class can be used many ways to achieve a wide variety of |
felipeal | 1b4e4b6 | 2012-02-27 12:09:13 -0800 | [diff] [blame] | 169 | * results. In its core, it represents a particular operation or interface |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 170 | * that is running within a larger {@link Activity}. A Fragment is closely |
| 171 | * tied to the Activity it is in, and can not be used apart from one. Though |
| 172 | * Fragment defines its own lifecycle, that lifecycle is dependent on its |
| 173 | * activity: if the activity is stopped, no fragments inside of it can be |
| 174 | * started; when the activity is destroyed, all fragments will be destroyed. |
| 175 | * |
Jeff Davidson | 2a12978 | 2014-09-09 18:10:57 -0700 | [diff] [blame] | 176 | * <p>All subclasses of Fragment must include a public no-argument constructor. |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 177 | * The framework will often re-instantiate a fragment class when needed, |
| 178 | * in particular during state restore, and needs to be able to find this |
Jeff Davidson | 2a12978 | 2014-09-09 18:10:57 -0700 | [diff] [blame] | 179 | * constructor to instantiate it. If the no-argument constructor is not |
| 180 | * available, a runtime exception will occur in some cases during state |
| 181 | * restore. |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 182 | * |
| 183 | * <p>Topics covered here: |
| 184 | * <ol> |
Dianne Hackborn | f9dd34f | 2011-04-19 18:44:03 -0700 | [diff] [blame] | 185 | * <li><a href="#OlderPlatforms">Older Platforms</a> |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 186 | * <li><a href="#Lifecycle">Lifecycle</a> |
| 187 | * <li><a href="#Layout">Layout</a> |
| 188 | * <li><a href="#BackStack">Back Stack</a> |
| 189 | * </ol> |
| 190 | * |
Joe Fernandez | b54e7a3 | 2011-10-03 15:09:50 -0700 | [diff] [blame] | 191 | * <div class="special reference"> |
| 192 | * <h3>Developer Guides</h3> |
| 193 | * <p>For more information about using fragments, read the |
| 194 | * <a href="{@docRoot}guide/topics/fundamentals/fragments.html">Fragments</a> developer guide.</p> |
| 195 | * </div> |
| 196 | * |
Dianne Hackborn | f9dd34f | 2011-04-19 18:44:03 -0700 | [diff] [blame] | 197 | * <a name="OlderPlatforms"></a> |
| 198 | * <h3>Older Platforms</h3> |
| 199 | * |
| 200 | * While the Fragment API was introduced in |
| 201 | * {@link android.os.Build.VERSION_CODES#HONEYCOMB}, a version of the API |
Dianne Hackborn | 7871bad | 2011-12-12 15:19:26 -0800 | [diff] [blame] | 202 | * at is also available for use on older platforms through |
| 203 | * {@link android.support.v4.app.FragmentActivity}. See the blog post |
Dianne Hackborn | f9dd34f | 2011-04-19 18:44:03 -0700 | [diff] [blame] | 204 | * <a href="http://android-developers.blogspot.com/2011/03/fragments-for-all.html"> |
| 205 | * Fragments For All</a> for more details. |
| 206 | * |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 207 | * <a name="Lifecycle"></a> |
| 208 | * <h3>Lifecycle</h3> |
| 209 | * |
| 210 | * <p>Though a Fragment's lifecycle is tied to its owning activity, it has |
| 211 | * its own wrinkle on the standard activity lifecycle. It includes basic |
| 212 | * activity lifecycle methods such as {@link #onResume}, but also important |
| 213 | * are methods related to interactions with the activity and UI generation. |
| 214 | * |
| 215 | * <p>The core series of lifecycle methods that are called to bring a fragment |
| 216 | * up to resumed state (interacting with the user) are: |
| 217 | * |
| 218 | * <ol> |
| 219 | * <li> {@link #onAttach} called once the fragment is associated with its activity. |
| 220 | * <li> {@link #onCreate} called to do initial creation of the fragment. |
| 221 | * <li> {@link #onCreateView} creates and returns the view hierarchy associated |
| 222 | * with the fragment. |
| 223 | * <li> {@link #onActivityCreated} tells the fragment that its activity has |
Quddus Chong | 3790001 | 2012-04-11 11:57:50 -0700 | [diff] [blame] | 224 | * completed its own {@link Activity#onCreate Activity.onCreate()}. |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 225 | * <li> {@link #onViewStateRestored} tells the fragment that all of the saved |
| 226 | * state of its view hierarchy has been restored. |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 227 | * <li> {@link #onStart} makes the fragment visible to the user (based on its |
| 228 | * containing activity being started). |
Mark Doliner | d0646dc | 2014-08-27 16:04:02 -0700 | [diff] [blame] | 229 | * <li> {@link #onResume} makes the fragment begin interacting with the user |
| 230 | * (based on its containing activity being resumed). |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 231 | * </ol> |
| 232 | * |
| 233 | * <p>As a fragment is no longer being used, it goes through a reverse |
| 234 | * series of callbacks: |
| 235 | * |
| 236 | * <ol> |
| 237 | * <li> {@link #onPause} fragment is no longer interacting with the user either |
| 238 | * because its activity is being paused or a fragment operation is modifying it |
| 239 | * in the activity. |
| 240 | * <li> {@link #onStop} fragment is no longer visible to the user either |
| 241 | * because its activity is being stopped or a fragment operation is modifying it |
| 242 | * in the activity. |
| 243 | * <li> {@link #onDestroyView} allows the fragment to clean up resources |
| 244 | * associated with its View. |
| 245 | * <li> {@link #onDestroy} called to do final cleanup of the fragment's state. |
| 246 | * <li> {@link #onDetach} called immediately prior to the fragment no longer |
| 247 | * being associated with its activity. |
| 248 | * </ol> |
| 249 | * |
| 250 | * <a name="Layout"></a> |
| 251 | * <h3>Layout</h3> |
| 252 | * |
| 253 | * <p>Fragments can be used as part of your application's layout, allowing |
| 254 | * you to better modularize your code and more easily adjust your user |
| 255 | * interface to the screen it is running on. As an example, we can look |
| 256 | * at a simple program consisting of a list of items, and display of the |
| 257 | * details of each item.</p> |
| 258 | * |
| 259 | * <p>An activity's layout XML can include <code><fragment></code> tags |
| 260 | * to embed fragment instances inside of the layout. For example, here is |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 261 | * a simple layout that embeds one fragment:</p> |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 262 | * |
| 263 | * {@sample development/samples/ApiDemos/res/layout/fragment_layout.xml layout} |
| 264 | * |
| 265 | * <p>The layout is installed in the activity in the normal way:</p> |
| 266 | * |
| 267 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentLayout.java |
| 268 | * main} |
| 269 | * |
Dianne Hackborn | 87121ac | 2011-01-04 17:26:23 -0800 | [diff] [blame] | 270 | * <p>The titles fragment, showing a list of titles, is fairly simple, relying |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 271 | * on {@link ListFragment} for most of its work. Note the implementation of |
Dianne Hackborn | 87121ac | 2011-01-04 17:26:23 -0800 | [diff] [blame] | 272 | * clicking an item: depending on the current activity's layout, it can either |
| 273 | * create and display a new fragment to show the details in-place (more about |
Ben Dodson | 542f240 | 2011-06-14 16:40:23 -0700 | [diff] [blame] | 274 | * this later), or start a new activity to show the details.</p> |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 275 | * |
| 276 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentLayout.java |
| 277 | * titles} |
| 278 | * |
Ben Dodson | 542f240 | 2011-06-14 16:40:23 -0700 | [diff] [blame] | 279 | * <p>The details fragment showing the contents of a selected item just |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 280 | * displays a string of text based on an index of a string array built in to |
| 281 | * the app:</p> |
| 282 | * |
| 283 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentLayout.java |
| 284 | * details} |
| 285 | * |
| 286 | * <p>In this case when the user clicks on a title, there is no details |
Ben Dodson | 542f240 | 2011-06-14 16:40:23 -0700 | [diff] [blame] | 287 | * container in the current activity, so the titles fragment's click code will |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 288 | * launch a new activity to display the details fragment:</p> |
| 289 | * |
| 290 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentLayout.java |
| 291 | * details_activity} |
| 292 | * |
| 293 | * <p>However the screen may be large enough to show both the list of titles |
| 294 | * and details about the currently selected title. To use such a layout on |
| 295 | * a landscape screen, this alternative layout can be placed under layout-land:</p> |
| 296 | * |
| 297 | * {@sample development/samples/ApiDemos/res/layout-land/fragment_layout.xml layout} |
| 298 | * |
Dianne Hackborn | 87121ac | 2011-01-04 17:26:23 -0800 | [diff] [blame] | 299 | * <p>Note how the prior code will adjust to this alternative UI flow: the titles |
| 300 | * fragment will now embed the details fragment inside of this activity, and the |
| 301 | * details activity will finish itself if it is running in a configuration |
| 302 | * where the details can be shown in-place. |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 303 | * |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 304 | * <p>When a configuration change causes the activity hosting these fragments |
| 305 | * to restart, its new instance may use a different layout that doesn't |
| 306 | * include the same fragments as the previous layout. In this case all of |
| 307 | * the previous fragments will still be instantiated and running in the new |
Dianne Hackborn | 87121ac | 2011-01-04 17:26:23 -0800 | [diff] [blame] | 308 | * instance. However, any that are no longer associated with a <fragment> |
| 309 | * tag in the view hierarchy will not have their content view created |
| 310 | * and will return false from {@link #isInLayout}. (The code here also shows |
| 311 | * how you can determine if a fragment placed in a container is no longer |
| 312 | * running in a layout with that container and avoid creating its view hierarchy |
| 313 | * in that case.) |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 314 | * |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 315 | * <p>The attributes of the <fragment> tag are used to control the |
Dianne Hackborn | 87121ac | 2011-01-04 17:26:23 -0800 | [diff] [blame] | 316 | * LayoutParams provided when attaching the fragment's view to the parent |
| 317 | * container. They can also be parsed by the fragment in {@link #onInflate} |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 318 | * as parameters. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 319 | * |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 320 | * <p>The fragment being instantiated must have some kind of unique identifier |
| 321 | * so that it can be re-associated with a previous instance if the parent |
| 322 | * activity needs to be destroyed and recreated. This can be provided these |
| 323 | * ways: |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 324 | * |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 325 | * <ul> |
| 326 | * <li>If nothing is explicitly supplied, the view ID of the container will |
| 327 | * be used. |
| 328 | * <li><code>android:tag</code> can be used in <fragment> to provide |
| 329 | * a specific tag name for the fragment. |
| 330 | * <li><code>android:id</code> can be used in <fragment> to provide |
| 331 | * a specific identifier for the fragment. |
| 332 | * </ul> |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 333 | * |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 334 | * <a name="BackStack"></a> |
| 335 | * <h3>Back Stack</h3> |
| 336 | * |
| 337 | * <p>The transaction in which fragments are modified can be placed on an |
| 338 | * internal back-stack of the owning activity. When the user presses back |
| 339 | * in the activity, any transactions on the back stack are popped off before |
| 340 | * the activity itself is finished. |
| 341 | * |
| 342 | * <p>For example, consider this simple fragment that is instantiated with |
| 343 | * an integer argument and displays that in a TextView in its UI:</p> |
| 344 | * |
| 345 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentStack.java |
| 346 | * fragment} |
| 347 | * |
| 348 | * <p>A function that creates a new instance of the fragment, replacing |
| 349 | * whatever current fragment instance is being shown and pushing that change |
| 350 | * on to the back stack could be written as: |
| 351 | * |
| 352 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentStack.java |
| 353 | * add_stack} |
| 354 | * |
| 355 | * <p>After each call to this function, a new entry is on the stack, and |
| 356 | * pressing back will pop it to return the user to whatever previous state |
| 357 | * the activity UI was in. |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 358 | */ |
Dianne Hackborn | c68c913 | 2011-07-29 01:25:18 -0700 | [diff] [blame] | 359 | public class Fragment implements ComponentCallbacks2, OnCreateContextMenuListener { |
Dianne Hackborn | 3e82ba1 | 2013-07-16 13:23:55 -0700 | [diff] [blame] | 360 | private static final ArrayMap<String, Class<?>> sClassMap = |
| 361 | new ArrayMap<String, Class<?>>(); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 362 | |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 363 | static final int INVALID_STATE = -1; // Invalid state used as a null value. |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 364 | static final int INITIALIZING = 0; // Not yet created. |
| 365 | static final int CREATED = 1; // Created. |
| 366 | static final int ACTIVITY_CREATED = 2; // The activity has finished its creation. |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 367 | static final int STOPPED = 3; // Fully created, not started. |
| 368 | static final int STARTED = 4; // Created and started, not resumed. |
| 369 | static final int RESUMED = 5; // Created started and resumed. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 370 | |
| 371 | private static final Transition USE_DEFAULT_TRANSITION = new TransitionSet(); |
| 372 | |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 373 | int mState = INITIALIZING; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 374 | |
Dianne Hackborn | d173fa3 | 2010-12-23 13:58:22 -0800 | [diff] [blame] | 375 | // Non-null if the fragment's view hierarchy is currently animating away, |
| 376 | // meaning we need to wait a bit on completely destroying it. This is the |
| 377 | // animation that is running. |
| 378 | Animator mAnimatingAway; |
| 379 | |
| 380 | // If mAnimatingAway != null, this is the state we should move to once the |
| 381 | // animation is done. |
| 382 | int mStateAfterAnimating; |
| 383 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 384 | // When instantiated from saved state, this is the saved state. |
| 385 | Bundle mSavedFragmentState; |
| 386 | SparseArray<Parcelable> mSavedViewState; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 387 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 388 | // Index into active fragment array. |
| 389 | int mIndex = -1; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 390 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 391 | // Internal unique name for this fragment; |
| 392 | String mWho; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 393 | |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 394 | // Construction arguments; |
| 395 | Bundle mArguments; |
| 396 | |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 397 | // Target fragment. |
| 398 | Fragment mTarget; |
| 399 | |
Dianne Hackborn | f930232 | 2011-06-14 18:36:14 -0700 | [diff] [blame] | 400 | // For use when retaining a fragment: this is the index of the last mTarget. |
| 401 | int mTargetIndex = -1; |
| 402 | |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 403 | // Target request code. |
| 404 | int mTargetRequestCode; |
| 405 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 406 | // True if the fragment is in the list of added fragments. |
| 407 | boolean mAdded; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 408 | |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 409 | // If set this fragment is being removed from its activity. |
| 410 | boolean mRemoving; |
| 411 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 412 | // Set to true if this fragment was instantiated from a layout file. |
| 413 | boolean mFromLayout; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 414 | |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 415 | // Set to true when the view has actually been inflated in its layout. |
| 416 | boolean mInLayout; |
| 417 | |
Dianne Hackborn | 352cc98 | 2011-01-04 11:34:18 -0800 | [diff] [blame] | 418 | // True if this fragment has been restored from previously saved state. |
| 419 | boolean mRestored; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 420 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 421 | // Number of active back stack entries this fragment is in. |
Dianne Hackborn | f121be7 | 2010-05-06 14:10:32 -0700 | [diff] [blame] | 422 | int mBackStackNesting; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 423 | |
Dianne Hackborn | 3e449ce | 2010-09-11 20:52:31 -0700 | [diff] [blame] | 424 | // The fragment manager we are associated with. Set as soon as the |
| 425 | // fragment is used in a transaction; cleared after it has been removed |
| 426 | // from all transactions. |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 427 | FragmentManagerImpl mFragmentManager; |
Dianne Hackborn | 3e449ce | 2010-09-11 20:52:31 -0700 | [diff] [blame] | 428 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 429 | // Activity this fragment is attached to. |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 430 | FragmentHostCallback mHost; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 431 | |
| 432 | // Private fragment manager for child fragments inside of this one. |
| 433 | FragmentManagerImpl mChildFragmentManager; |
| 434 | |
Adam Powell | 44ba79e | 2016-02-04 16:20:37 -0800 | [diff] [blame] | 435 | // For use when restoring fragment state and descendant fragments are retained. |
| 436 | // This state is set by FragmentState.instantiate and cleared in onCreate. |
| 437 | FragmentManagerNonConfig mChildNonConfig; |
| 438 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 439 | // If this Fragment is contained in another Fragment, this is that container. |
| 440 | Fragment mParentFragment; |
| 441 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 442 | // The optional identifier for this fragment -- either the container ID if it |
| 443 | // was dynamically added to the view hierarchy, or the ID supplied in |
| 444 | // layout. |
| 445 | int mFragmentId; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 446 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 447 | // When a fragment is being dynamically added to the view hierarchy, this |
| 448 | // is the identifier of the parent container it is being added to. |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 449 | int mContainerId; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 450 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 451 | // The optional named tag for this fragment -- usually used to find |
| 452 | // fragments that are not part of the layout. |
| 453 | String mTag; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 454 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 455 | // Set to true when the app has requested that this fragment be hidden |
| 456 | // from the user. |
| 457 | boolean mHidden; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 458 | |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 459 | // Set to true when the app has requested that this fragment be detached. |
| 460 | boolean mDetached; |
| 461 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 462 | // If set this fragment would like its instance retained across |
| 463 | // configuration changes. |
| 464 | boolean mRetainInstance; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 465 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 466 | // If set this fragment is being retained across the current config change. |
| 467 | boolean mRetaining; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 468 | |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 469 | // If set this fragment has menu items to contribute. |
| 470 | boolean mHasMenu; |
Dianne Hackborn | 6c28597 | 2011-08-29 16:53:49 -0700 | [diff] [blame] | 471 | |
| 472 | // Set to true to allow the fragment's menu to be shown. |
| 473 | boolean mMenuVisible = true; |
| 474 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 475 | // Used to verify that subclasses call through to super class. |
| 476 | boolean mCalled; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 477 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 478 | // If app has requested a specific animation, this is the one to use. |
| 479 | int mNextAnim; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 480 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 481 | // The parent container of the fragment after dynamically added to UI. |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 482 | ViewGroup mContainer; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 483 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 484 | // The View generated for this fragment. |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 485 | View mView; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 486 | |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 487 | // Whether this fragment should defer starting until after other fragments |
| 488 | // have been started and their loaders are finished. |
| 489 | boolean mDeferStart; |
| 490 | |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 491 | // Hint provided by the app that this fragment is currently visible to the user. |
| 492 | boolean mUserVisibleHint = true; |
| 493 | |
Dianne Hackborn | 4911b78 | 2010-07-15 12:54:39 -0700 | [diff] [blame] | 494 | LoaderManagerImpl mLoaderManager; |
Dianne Hackborn | fb3cffe | 2010-10-25 17:08:56 -0700 | [diff] [blame] | 495 | boolean mLoadersStarted; |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 496 | boolean mCheckedForLoaderManager; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 497 | |
| 498 | private Transition mEnterTransition = null; |
| 499 | private Transition mReturnTransition = USE_DEFAULT_TRANSITION; |
| 500 | private Transition mExitTransition = null; |
| 501 | private Transition mReenterTransition = USE_DEFAULT_TRANSITION; |
| 502 | private Transition mSharedElementEnterTransition = null; |
| 503 | private Transition mSharedElementReturnTransition = USE_DEFAULT_TRANSITION; |
| 504 | private Boolean mAllowReturnTransitionOverlap; |
| 505 | private Boolean mAllowEnterTransitionOverlap; |
| 506 | |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 507 | SharedElementCallback mEnterTransitionCallback = SharedElementCallback.NULL_CALLBACK; |
| 508 | SharedElementCallback mExitTransitionCallback = SharedElementCallback.NULL_CALLBACK; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 509 | |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 510 | /** |
Dianne Hackborn | b46ed76 | 2011-06-02 18:33:15 -0700 | [diff] [blame] | 511 | * State information that has been retrieved from a fragment instance |
| 512 | * through {@link FragmentManager#saveFragmentInstanceState(Fragment) |
| 513 | * FragmentManager.saveFragmentInstanceState}. |
| 514 | */ |
| 515 | public static class SavedState implements Parcelable { |
| 516 | final Bundle mState; |
| 517 | |
| 518 | SavedState(Bundle state) { |
| 519 | mState = state; |
| 520 | } |
| 521 | |
| 522 | SavedState(Parcel in, ClassLoader loader) { |
| 523 | mState = in.readBundle(); |
| 524 | if (loader != null && mState != null) { |
| 525 | mState.setClassLoader(loader); |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | @Override |
| 530 | public int describeContents() { |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | @Override |
| 535 | public void writeToParcel(Parcel dest, int flags) { |
| 536 | dest.writeBundle(mState); |
| 537 | } |
| 538 | |
| 539 | public static final Parcelable.ClassLoaderCreator<SavedState> CREATOR |
| 540 | = new Parcelable.ClassLoaderCreator<SavedState>() { |
| 541 | public SavedState createFromParcel(Parcel in) { |
| 542 | return new SavedState(in, null); |
| 543 | } |
| 544 | |
| 545 | public SavedState createFromParcel(Parcel in, ClassLoader loader) { |
| 546 | return new SavedState(in, loader); |
| 547 | } |
| 548 | |
| 549 | public SavedState[] newArray(int size) { |
| 550 | return new SavedState[size]; |
| 551 | } |
| 552 | }; |
| 553 | } |
| 554 | |
| 555 | /** |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 556 | * Thrown by {@link Fragment#instantiate(Context, String, Bundle)} when |
| 557 | * there is an instantiation failure. |
| 558 | */ |
| 559 | static public class InstantiationException extends AndroidRuntimeException { |
| 560 | public InstantiationException(String msg, Exception cause) { |
| 561 | super(msg, cause); |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | /** |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 566 | * Default constructor. <strong>Every</strong> fragment must have an |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 567 | * empty constructor, so it can be instantiated when restoring its |
| 568 | * activity's state. It is strongly recommended that subclasses do not |
| 569 | * have other constructors with parameters, since these constructors |
| 570 | * will not be called when the fragment is re-instantiated; instead, |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 571 | * arguments can be supplied by the caller with {@link #setArguments} |
| 572 | * and later retrieved by the Fragment with {@link #getArguments}. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 573 | * |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 574 | * <p>Applications should generally not implement a constructor. The |
Mark Doliner | d0646dc | 2014-08-27 16:04:02 -0700 | [diff] [blame] | 575 | * first place application code can run where the fragment is ready to |
Dianne Hackborn | 291905e | 2010-08-17 15:17:15 -0700 | [diff] [blame] | 576 | * be used is in {@link #onAttach(Activity)}, the point where the fragment |
| 577 | * is actually associated with its activity. Some applications may also |
| 578 | * want to implement {@link #onInflate} to retrieve attributes from a |
| 579 | * layout resource, though should take care here because this happens for |
| 580 | * the fragment is attached to its activity. |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 581 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 582 | public Fragment() { |
| 583 | } |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 584 | |
Dianne Hackborn | b1ad597 | 2010-08-02 17:30:33 -0700 | [diff] [blame] | 585 | /** |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 586 | * Like {@link #instantiate(Context, String, Bundle)} but with a null |
| 587 | * argument Bundle. |
| 588 | */ |
| 589 | public static Fragment instantiate(Context context, String fname) { |
| 590 | return instantiate(context, fname, null); |
| 591 | } |
| 592 | |
| 593 | /** |
Dianne Hackborn | b1ad597 | 2010-08-02 17:30:33 -0700 | [diff] [blame] | 594 | * Create a new instance of a Fragment with the given class name. This is |
| 595 | * the same as calling its empty constructor. |
| 596 | * |
| 597 | * @param context The calling context being used to instantiate the fragment. |
| 598 | * This is currently just used to get its ClassLoader. |
| 599 | * @param fname The class name of the fragment to instantiate. |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 600 | * @param args Bundle of arguments to supply to the fragment, which it |
| 601 | * can retrieve with {@link #getArguments()}. May be null. |
Dianne Hackborn | b1ad597 | 2010-08-02 17:30:33 -0700 | [diff] [blame] | 602 | * @return Returns a new fragment instance. |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 603 | * @throws InstantiationException If there is a failure in instantiating |
| 604 | * the given fragment class. This is a runtime exception; it is not |
| 605 | * normally expected to happen. |
Dianne Hackborn | b1ad597 | 2010-08-02 17:30:33 -0700 | [diff] [blame] | 606 | */ |
Tor Norbye | d9273d6 | 2013-05-30 15:59:53 -0700 | [diff] [blame] | 607 | public static Fragment instantiate(Context context, String fname, @Nullable Bundle args) { |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 608 | try { |
| 609 | Class<?> clazz = sClassMap.get(fname); |
| 610 | if (clazz == null) { |
| 611 | // Class not found in the cache, see if it's real, and try to add it |
| 612 | clazz = context.getClassLoader().loadClass(fname); |
Amith Yamasani | 364ed4d | 2013-07-26 13:37:56 -0700 | [diff] [blame] | 613 | if (!Fragment.class.isAssignableFrom(clazz)) { |
| 614 | throw new InstantiationException("Trying to instantiate a class " + fname |
| 615 | + " that is not a Fragment", new ClassCastException()); |
| 616 | } |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 617 | sClassMap.put(fname, clazz); |
| 618 | } |
| 619 | Fragment f = (Fragment)clazz.newInstance(); |
| 620 | if (args != null) { |
| 621 | args.setClassLoader(f.getClass().getClassLoader()); |
| 622 | f.mArguments = args; |
| 623 | } |
| 624 | return f; |
| 625 | } catch (ClassNotFoundException e) { |
| 626 | throw new InstantiationException("Unable to instantiate fragment " + fname |
| 627 | + ": make sure class name exists, is public, and has an" |
| 628 | + " empty constructor that is public", e); |
| 629 | } catch (java.lang.InstantiationException e) { |
| 630 | throw new InstantiationException("Unable to instantiate fragment " + fname |
| 631 | + ": make sure class name exists, is public, and has an" |
| 632 | + " empty constructor that is public", e); |
| 633 | } catch (IllegalAccessException e) { |
| 634 | throw new InstantiationException("Unable to instantiate fragment " + fname |
| 635 | + ": make sure class name exists, is public, and has an" |
| 636 | + " empty constructor that is public", e); |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 637 | } |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 638 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 639 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 640 | final void restoreViewState(Bundle savedInstanceState) { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 641 | if (mSavedViewState != null) { |
| 642 | mView.restoreHierarchyState(mSavedViewState); |
| 643 | mSavedViewState = null; |
| 644 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 645 | mCalled = false; |
| 646 | onViewStateRestored(savedInstanceState); |
| 647 | if (!mCalled) { |
| 648 | throw new SuperNotCalledException("Fragment " + this |
| 649 | + " did not call through to super.onViewStateRestored()"); |
| 650 | } |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 651 | } |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 652 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 653 | final void setIndex(int index, Fragment parent) { |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 654 | mIndex = index; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 655 | if (parent != null) { |
| 656 | mWho = parent.mWho + ":" + mIndex; |
| 657 | } else { |
| 658 | mWho = "android:fragment:" + mIndex; |
| 659 | } |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 660 | } |
| 661 | |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 662 | final boolean isInBackStack() { |
| 663 | return mBackStackNesting > 0; |
| 664 | } |
| 665 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 666 | /** |
| 667 | * Subclasses can not override equals(). |
| 668 | */ |
| 669 | @Override final public boolean equals(Object o) { |
| 670 | return super.equals(o); |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * Subclasses can not override hashCode(). |
| 675 | */ |
| 676 | @Override final public int hashCode() { |
| 677 | return super.hashCode(); |
| 678 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 679 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 680 | @Override |
| 681 | public String toString() { |
| 682 | StringBuilder sb = new StringBuilder(128); |
Dianne Hackborn | a2ea747 | 2010-12-20 12:10:01 -0800 | [diff] [blame] | 683 | DebugUtils.buildShortClassTag(this, sb); |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 684 | if (mIndex >= 0) { |
| 685 | sb.append(" #"); |
| 686 | sb.append(mIndex); |
| 687 | } |
| 688 | if (mFragmentId != 0) { |
| 689 | sb.append(" id=0x"); |
| 690 | sb.append(Integer.toHexString(mFragmentId)); |
| 691 | } |
| 692 | if (mTag != null) { |
| 693 | sb.append(" "); |
| 694 | sb.append(mTag); |
| 695 | } |
| 696 | sb.append('}'); |
| 697 | return sb.toString(); |
| 698 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 699 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 700 | /** |
| 701 | * Return the identifier this fragment is known by. This is either |
| 702 | * the android:id value supplied in a layout or the container view ID |
| 703 | * supplied when adding the fragment. |
| 704 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 705 | final public int getId() { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 706 | return mFragmentId; |
| 707 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 708 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 709 | /** |
| 710 | * Get the tag name of the fragment, if specified. |
| 711 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 712 | final public String getTag() { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 713 | return mTag; |
| 714 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 715 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 716 | /** |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 717 | * Supply the construction arguments for this fragment. This can only |
| 718 | * be called before the fragment has been attached to its activity; that |
| 719 | * is, you should call it immediately after constructing the fragment. The |
| 720 | * arguments supplied here will be retained across fragment destroy and |
| 721 | * creation. |
| 722 | */ |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 723 | public void setArguments(Bundle args) { |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 724 | if (mIndex >= 0) { |
| 725 | throw new IllegalStateException("Fragment already active"); |
| 726 | } |
| 727 | mArguments = args; |
| 728 | } |
| 729 | |
| 730 | /** |
Mark Doliner | d0646dc | 2014-08-27 16:04:02 -0700 | [diff] [blame] | 731 | * Return the arguments supplied to {@link #setArguments}, if any. |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 732 | */ |
| 733 | final public Bundle getArguments() { |
| 734 | return mArguments; |
| 735 | } |
| 736 | |
| 737 | /** |
Dianne Hackborn | b46ed76 | 2011-06-02 18:33:15 -0700 | [diff] [blame] | 738 | * Set the initial saved state that this Fragment should restore itself |
| 739 | * from when first being constructed, as returned by |
| 740 | * {@link FragmentManager#saveFragmentInstanceState(Fragment) |
| 741 | * FragmentManager.saveFragmentInstanceState}. |
| 742 | * |
| 743 | * @param state The state the fragment should be restored from. |
| 744 | */ |
| 745 | public void setInitialSavedState(SavedState state) { |
| 746 | if (mIndex >= 0) { |
| 747 | throw new IllegalStateException("Fragment already active"); |
| 748 | } |
| 749 | mSavedFragmentState = state != null && state.mState != null |
| 750 | ? state.mState : null; |
| 751 | } |
| 752 | |
| 753 | /** |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 754 | * Optional target for this fragment. This may be used, for example, |
| 755 | * if this fragment is being started by another, and when done wants to |
| 756 | * give a result back to the first. The target set here is retained |
| 757 | * across instances via {@link FragmentManager#putFragment |
| 758 | * FragmentManager.putFragment()}. |
| 759 | * |
| 760 | * @param fragment The fragment that is the target of this one. |
| 761 | * @param requestCode Optional request code, for convenience if you |
| 762 | * are going to call back with {@link #onActivityResult(int, int, Intent)}. |
| 763 | */ |
| 764 | public void setTargetFragment(Fragment fragment, int requestCode) { |
| 765 | mTarget = fragment; |
| 766 | mTargetRequestCode = requestCode; |
| 767 | } |
| 768 | |
| 769 | /** |
Dianne Hackborn | 3f00be5 | 2010-08-15 18:03:27 -0700 | [diff] [blame] | 770 | * Return the target fragment set by {@link #setTargetFragment}. |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 771 | */ |
| 772 | final public Fragment getTargetFragment() { |
| 773 | return mTarget; |
| 774 | } |
| 775 | |
| 776 | /** |
Dianne Hackborn | 3f00be5 | 2010-08-15 18:03:27 -0700 | [diff] [blame] | 777 | * Return the target request code set by {@link #setTargetFragment}. |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 778 | */ |
| 779 | final public int getTargetRequestCode() { |
| 780 | return mTargetRequestCode; |
| 781 | } |
| 782 | |
| 783 | /** |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 784 | * Return the {@link Context} this fragment is currently associated with. |
| 785 | */ |
| 786 | public Context getContext() { |
| 787 | return mHost == null ? null : mHost.getContext(); |
| 788 | } |
| 789 | |
| 790 | /** |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 791 | * Return the Activity this fragment is currently associated with. |
| 792 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 793 | final public Activity getActivity() { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 794 | return mHost == null ? null : mHost.getActivity(); |
| 795 | } |
| 796 | |
| 797 | /** |
| 798 | * Return the host object of this fragment. May return {@code null} if the fragment |
| 799 | * isn't currently being hosted. |
| 800 | */ |
| 801 | @Nullable |
| 802 | final public Object getHost() { |
| 803 | return mHost == null ? null : mHost.onGetHost(); |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 804 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 805 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 806 | /** |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 807 | * Return <code>getActivity().getResources()</code>. |
| 808 | */ |
| 809 | final public Resources getResources() { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 810 | if (mHost == null) { |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 811 | throw new IllegalStateException("Fragment " + this + " not attached to Activity"); |
| 812 | } |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 813 | return mHost.getContext().getResources(); |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 814 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 815 | |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 816 | /** |
| 817 | * Return a localized, styled CharSequence from the application's package's |
| 818 | * default string table. |
| 819 | * |
| 820 | * @param resId Resource id for the CharSequence text |
| 821 | */ |
Tor Norbye | 7b9c912 | 2013-05-30 16:48:33 -0700 | [diff] [blame] | 822 | public final CharSequence getText(@StringRes int resId) { |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 823 | return getResources().getText(resId); |
| 824 | } |
| 825 | |
| 826 | /** |
| 827 | * Return a localized string from the application's package's |
| 828 | * default string table. |
| 829 | * |
| 830 | * @param resId Resource id for the string |
| 831 | */ |
Tor Norbye | 7b9c912 | 2013-05-30 16:48:33 -0700 | [diff] [blame] | 832 | public final String getString(@StringRes int resId) { |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 833 | return getResources().getString(resId); |
| 834 | } |
| 835 | |
| 836 | /** |
| 837 | * Return a localized formatted string from the application's package's |
| 838 | * default string table, substituting the format arguments as defined in |
| 839 | * {@link java.util.Formatter} and {@link java.lang.String#format}. |
| 840 | * |
| 841 | * @param resId Resource id for the format string |
| 842 | * @param formatArgs The format arguments that will be used for substitution. |
| 843 | */ |
| 844 | |
Tor Norbye | 7b9c912 | 2013-05-30 16:48:33 -0700 | [diff] [blame] | 845 | public final String getString(@StringRes int resId, Object... formatArgs) { |
Dianne Hackborn | bdd19bc | 2010-11-10 23:27:54 -0800 | [diff] [blame] | 846 | return getResources().getString(resId, formatArgs); |
| 847 | } |
| 848 | |
| 849 | /** |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 850 | * Return the FragmentManager for interacting with fragments associated |
Dianne Hackborn | 3e449ce | 2010-09-11 20:52:31 -0700 | [diff] [blame] | 851 | * with this fragment's activity. Note that this will be non-null slightly |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 852 | * before {@link #getActivity()}, during the time from when the fragment is |
Dianne Hackborn | 3e449ce | 2010-09-11 20:52:31 -0700 | [diff] [blame] | 853 | * placed in a {@link FragmentTransaction} until it is committed and |
| 854 | * attached to its activity. |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 855 | * |
| 856 | * <p>If this Fragment is a child of another Fragment, the FragmentManager |
| 857 | * returned here will be the parent's {@link #getChildFragmentManager()}. |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 858 | */ |
| 859 | final public FragmentManager getFragmentManager() { |
Dianne Hackborn | 3e449ce | 2010-09-11 20:52:31 -0700 | [diff] [blame] | 860 | return mFragmentManager; |
Dianne Hackborn | b7a2e47 | 2010-08-12 16:20:42 -0700 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | /** |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 864 | * Return a private FragmentManager for placing and managing Fragments |
| 865 | * inside of this Fragment. |
| 866 | */ |
| 867 | final public FragmentManager getChildFragmentManager() { |
| 868 | if (mChildFragmentManager == null) { |
| 869 | instantiateChildFragmentManager(); |
| 870 | if (mState >= RESUMED) { |
| 871 | mChildFragmentManager.dispatchResume(); |
| 872 | } else if (mState >= STARTED) { |
| 873 | mChildFragmentManager.dispatchStart(); |
| 874 | } else if (mState >= ACTIVITY_CREATED) { |
| 875 | mChildFragmentManager.dispatchActivityCreated(); |
| 876 | } else if (mState >= CREATED) { |
| 877 | mChildFragmentManager.dispatchCreate(); |
| 878 | } |
| 879 | } |
| 880 | return mChildFragmentManager; |
| 881 | } |
| 882 | |
| 883 | /** |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 884 | * Returns the parent Fragment containing this Fragment. If this Fragment |
| 885 | * is attached directly to an Activity, returns null. |
| 886 | */ |
| 887 | final public Fragment getParentFragment() { |
| 888 | return mParentFragment; |
| 889 | } |
| 890 | |
| 891 | /** |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 892 | * Return true if the fragment is currently added to its activity. |
| 893 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 894 | final public boolean isAdded() { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 895 | return mHost != null && mAdded; |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 896 | } |
| 897 | |
| 898 | /** |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 899 | * Return true if the fragment has been explicitly detached from the UI. |
| 900 | * That is, {@link FragmentTransaction#detach(Fragment) |
| 901 | * FragmentTransaction.detach(Fragment)} has been used on it. |
| 902 | */ |
| 903 | final public boolean isDetached() { |
| 904 | return mDetached; |
| 905 | } |
| 906 | |
| 907 | /** |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 908 | * Return true if this fragment is currently being removed from its |
| 909 | * activity. This is <em>not</em> whether its activity is finishing, but |
| 910 | * rather whether it is in the process of being removed from its activity. |
| 911 | */ |
| 912 | final public boolean isRemoving() { |
| 913 | return mRemoving; |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 914 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 915 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 916 | /** |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 917 | * Return true if the layout is included as part of an activity view |
| 918 | * hierarchy via the <fragment> tag. This will always be true when |
| 919 | * fragments are created through the <fragment> tag, <em>except</em> |
| 920 | * in the case where an old fragment is restored from a previous state and |
| 921 | * it does not appear in the layout of the current state. |
| 922 | */ |
| 923 | final public boolean isInLayout() { |
| 924 | return mInLayout; |
| 925 | } |
| 926 | |
| 927 | /** |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 928 | * Return true if the fragment is in the resumed state. This is true |
| 929 | * for the duration of {@link #onResume()} and {@link #onPause()} as well. |
| 930 | */ |
| 931 | final public boolean isResumed() { |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 932 | return mState >= RESUMED; |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 933 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 934 | |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 935 | /** |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 936 | * Return true if the fragment is currently visible to the user. This means |
| 937 | * it: (1) has been added, (2) has its view attached to the window, and |
| 938 | * (3) is not hidden. |
| 939 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 940 | final public boolean isVisible() { |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 941 | return isAdded() && !isHidden() && mView != null |
| 942 | && mView.getWindowToken() != null && mView.getVisibility() == View.VISIBLE; |
| 943 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 944 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 945 | /** |
| 946 | * Return true if the fragment has been hidden. By default fragments |
| 947 | * are shown. You can find out about changes to this state with |
Dianne Hackborn | cddfa6d | 2010-05-19 22:56:37 -0700 | [diff] [blame] | 948 | * {@link #onHiddenChanged}. Note that the hidden state is orthogonal |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 949 | * to other states -- that is, to be visible to the user, a fragment |
| 950 | * must be both started and not hidden. |
| 951 | */ |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 952 | final public boolean isHidden() { |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 953 | return mHidden; |
| 954 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 955 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 956 | /** |
| 957 | * Called when the hidden state (as returned by {@link #isHidden()} of |
| 958 | * the fragment has changed. Fragments start out not hidden; this will |
| 959 | * be called whenever the fragment changes state from that. |
| 960 | * @param hidden True if the fragment is now hidden, false if it is not |
| 961 | * visible. |
| 962 | */ |
| 963 | public void onHiddenChanged(boolean hidden) { |
| 964 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 965 | |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 966 | /** |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 967 | * Control whether a fragment instance is retained across Activity |
| 968 | * re-creation (such as from a configuration change). This can only |
| 969 | * be used with fragments not in the back stack. If set, the fragment |
| 970 | * lifecycle will be slightly different when an activity is recreated: |
| 971 | * <ul> |
| 972 | * <li> {@link #onDestroy()} will not be called (but {@link #onDetach()} still |
| 973 | * will be, because the fragment is being detached from its current activity). |
| 974 | * <li> {@link #onCreate(Bundle)} will not be called since the fragment |
| 975 | * is not being re-created. |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 976 | * <li> {@link #onAttach(Activity)} and {@link #onActivityCreated(Bundle)} <b>will</b> |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 977 | * still be called. |
| 978 | * </ul> |
| 979 | */ |
| 980 | public void setRetainInstance(boolean retain) { |
| 981 | mRetainInstance = retain; |
| 982 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 983 | |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 984 | final public boolean getRetainInstance() { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 985 | return mRetainInstance; |
| 986 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 987 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 988 | /** |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 989 | * Report that this fragment would like to participate in populating |
Wink Saville | 4dc643e | 2010-06-12 22:16:41 -0700 | [diff] [blame] | 990 | * the options menu by receiving a call to {@link #onCreateOptionsMenu} |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 991 | * and related methods. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 992 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 993 | * @param hasMenu If true, the fragment has menu items to contribute. |
| 994 | */ |
| 995 | public void setHasOptionsMenu(boolean hasMenu) { |
| 996 | if (mHasMenu != hasMenu) { |
| 997 | mHasMenu = hasMenu; |
Adam Powell | f0f5fff | 2011-08-01 13:42:50 -0700 | [diff] [blame] | 998 | if (isAdded() && !isHidden()) { |
| 999 | mFragmentManager.invalidateOptionsMenu(); |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1000 | } |
| 1001 | } |
| 1002 | } |
Dianne Hackborn | 6c28597 | 2011-08-29 16:53:49 -0700 | [diff] [blame] | 1003 | |
| 1004 | /** |
| 1005 | * Set a hint for whether this fragment's menu should be visible. This |
| 1006 | * is useful if you know that a fragment has been placed in your view |
| 1007 | * hierarchy so that the user can not currently seen it, so any menu items |
| 1008 | * it has should also not be shown. |
| 1009 | * |
| 1010 | * @param menuVisible The default is true, meaning the fragment's menu will |
| 1011 | * be shown as usual. If false, the user will not see the menu. |
| 1012 | */ |
| 1013 | public void setMenuVisibility(boolean menuVisible) { |
| 1014 | if (mMenuVisible != menuVisible) { |
| 1015 | mMenuVisible = menuVisible; |
| 1016 | if (mHasMenu && isAdded() && !isHidden()) { |
| 1017 | mFragmentManager.invalidateOptionsMenu(); |
| 1018 | } |
| 1019 | } |
| 1020 | } |
| 1021 | |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1022 | /** |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1023 | * Set a hint to the system about whether this fragment's UI is currently visible |
| 1024 | * to the user. This hint defaults to true and is persistent across fragment instance |
| 1025 | * state save and restore. |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1026 | * |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1027 | * <p>An app may set this to false to indicate that the fragment's UI is |
| 1028 | * scrolled out of visibility or is otherwise not directly visible to the user. |
| 1029 | * This may be used by the system to prioritize operations such as fragment lifecycle updates |
| 1030 | * or loader ordering behavior.</p> |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1031 | * |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1032 | * @param isVisibleToUser true if this fragment's UI is currently visible to the user (default), |
| 1033 | * false if it is not. |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1034 | */ |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1035 | public void setUserVisibleHint(boolean isVisibleToUser) { |
Adam Powell | 255b008 | 2016-02-18 15:17:29 -0800 | [diff] [blame] | 1036 | if (!mUserVisibleHint && isVisibleToUser && mState < STARTED && mFragmentManager != null) { |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1037 | mFragmentManager.performPendingDeferredStart(this); |
| 1038 | } |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1039 | mUserVisibleHint = isVisibleToUser; |
| 1040 | mDeferStart = !isVisibleToUser; |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
| 1043 | /** |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1044 | * @return The current value of the user-visible hint on this fragment. |
| 1045 | * @see #setUserVisibleHint(boolean) |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1046 | */ |
Adam Powell | 78fed9b | 2011-11-07 10:45:34 -0800 | [diff] [blame] | 1047 | public boolean getUserVisibleHint() { |
| 1048 | return mUserVisibleHint; |
Adam Powell | 635c60a | 2011-10-26 10:22:16 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
| 1051 | /** |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1052 | * Return the LoaderManager for this fragment, creating it if needed. |
| 1053 | */ |
| 1054 | public LoaderManager getLoaderManager() { |
| 1055 | if (mLoaderManager != null) { |
| 1056 | return mLoaderManager; |
| 1057 | } |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1058 | if (mHost == null) { |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 1059 | throw new IllegalStateException("Fragment " + this + " not attached to Activity"); |
| 1060 | } |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 1061 | mCheckedForLoaderManager = true; |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1062 | mLoaderManager = mHost.getLoaderManager(mWho, mLoadersStarted, true); |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1063 | return mLoaderManager; |
| 1064 | } |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1065 | |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1066 | /** |
Scott Main | 87bff97 | 2013-02-27 15:46:34 -0800 | [diff] [blame] | 1067 | * Call {@link Activity#startActivity(Intent)} from the fragment's |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1068 | * containing Activity. |
Dianne Hackborn | 7a2195c | 2012-03-19 17:38:00 -0700 | [diff] [blame] | 1069 | * |
| 1070 | * @param intent The intent to start. |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1071 | */ |
| 1072 | public void startActivity(Intent intent) { |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1073 | startActivity(intent, null); |
| 1074 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1075 | |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1076 | /** |
Scott Main | 87bff97 | 2013-02-27 15:46:34 -0800 | [diff] [blame] | 1077 | * Call {@link Activity#startActivity(Intent, Bundle)} from the fragment's |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1078 | * containing Activity. |
Dianne Hackborn | 7a2195c | 2012-03-19 17:38:00 -0700 | [diff] [blame] | 1079 | * |
| 1080 | * @param intent The intent to start. |
| 1081 | * @param options Additional options for how the Activity should be started. |
| 1082 | * See {@link android.content.Context#startActivity(Intent, Bundle) |
| 1083 | * Context.startActivity(Intent, Bundle)} for more details. |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1084 | */ |
| 1085 | public void startActivity(Intent intent, Bundle options) { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1086 | if (mHost == null) { |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 1087 | throw new IllegalStateException("Fragment " + this + " not attached to Activity"); |
| 1088 | } |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1089 | if (options != null) { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1090 | mHost.onStartActivityFromFragment(this, intent, -1, options); |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1091 | } else { |
| 1092 | // Note we want to go through this call for compatibility with |
| 1093 | // applications that may have overridden the method. |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1094 | mHost.onStartActivityFromFragment(this, intent, -1, null /*options*/); |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1095 | } |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1096 | } |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1097 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1098 | /** |
Scott Main | 87bff97 | 2013-02-27 15:46:34 -0800 | [diff] [blame] | 1099 | * Call {@link Activity#startActivityForResult(Intent, int)} from the fragment's |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1100 | * containing Activity. |
| 1101 | */ |
| 1102 | public void startActivityForResult(Intent intent, int requestCode) { |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1103 | startActivityForResult(intent, requestCode, null); |
| 1104 | } |
| 1105 | |
| 1106 | /** |
Scott Main | 87bff97 | 2013-02-27 15:46:34 -0800 | [diff] [blame] | 1107 | * Call {@link Activity#startActivityForResult(Intent, int, Bundle)} from the fragment's |
Dianne Hackborn | a4972e9 | 2012-03-14 10:38:05 -0700 | [diff] [blame] | 1108 | * containing Activity. |
| 1109 | */ |
| 1110 | public void startActivityForResult(Intent intent, int requestCode, Bundle options) { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1111 | if (mHost == null) { |
Dianne Hackborn | 5d9d03a | 2011-01-24 13:15:09 -0800 | [diff] [blame] | 1112 | throw new IllegalStateException("Fragment " + this + " not attached to Activity"); |
| 1113 | } |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1114 | mHost.onStartActivityFromFragment(this, intent, requestCode, options); |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1115 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1116 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1117 | /** |
| 1118 | * Receive the result from a previous call to |
| 1119 | * {@link #startActivityForResult(Intent, int)}. This follows the |
| 1120 | * related Activity API as described there in |
| 1121 | * {@link Activity#onActivityResult(int, int, Intent)}. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1122 | * |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1123 | * @param requestCode The integer request code originally supplied to |
| 1124 | * startActivityForResult(), allowing you to identify who this |
| 1125 | * result came from. |
| 1126 | * @param resultCode The integer result code returned by the child activity |
| 1127 | * through its setResult(). |
| 1128 | * @param data An Intent, which can return result data to the caller |
| 1129 | * (various data can be attached to Intent "extras"). |
| 1130 | */ |
| 1131 | public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| 1132 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1133 | |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1134 | /** |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1135 | * Requests permissions to be granted to this application. These permissions |
| 1136 | * must be requested in your manifest, they should not be granted to your app, |
| 1137 | * and they should have protection level {@link android.content.pm.PermissionInfo |
| 1138 | * #PROTECTION_DANGEROUS dangerous}, regardless whether they are declared by |
| 1139 | * the platform or a third-party app. |
| 1140 | * <p> |
| 1141 | * Normal permissions {@link android.content.pm.PermissionInfo#PROTECTION_NORMAL} |
| 1142 | * are granted at install time if requested in the manifest. Signature permissions |
| 1143 | * {@link android.content.pm.PermissionInfo#PROTECTION_SIGNATURE} are granted at |
| 1144 | * install time if requested in the manifest and the signature of your app matches |
| 1145 | * the signature of the app declaring the permissions. |
| 1146 | * </p> |
| 1147 | * <p> |
| 1148 | * If your app does not have the requested permissions the user will be presented |
| 1149 | * with UI for accepting them. After the user has accepted or rejected the |
| 1150 | * requested permissions you will receive a callback on {@link |
| 1151 | * #onRequestPermissionsResult(int, String[], int[])} reporting whether the |
| 1152 | * permissions were granted or not. |
| 1153 | * </p> |
| 1154 | * <p> |
| 1155 | * Note that requesting a permission does not guarantee it will be granted and |
| 1156 | * your app should be able to run without having this permission. |
| 1157 | * </p> |
| 1158 | * <p> |
| 1159 | * This method may start an activity allowing the user to choose which permissions |
| 1160 | * to grant and which to reject. Hence, you should be prepared that your activity |
| 1161 | * may be paused and resumed. Further, granting some permissions may require |
| 1162 | * a restart of you application. In such a case, the system will recreate the |
| 1163 | * activity stack before delivering the result to {@link |
| 1164 | * #onRequestPermissionsResult(int, String[], int[])}. |
| 1165 | * </p> |
| 1166 | * <p> |
| 1167 | * When checking whether you have a permission you should use {@link |
| 1168 | * android.content.Context#checkSelfPermission(String)}. |
| 1169 | * </p> |
| 1170 | * <p> |
Svet Ganov | d7ad54e | 2015-08-21 06:18:09 -0700 | [diff] [blame] | 1171 | * Calling this API for permissions already granted to your app would show UI |
| 1172 | * to the user to decide whether the app can still hold these permissions. This |
| 1173 | * can be useful if the way your app uses data guarded by the permissions |
| 1174 | * changes significantly. |
| 1175 | * </p> |
| 1176 | * <p> |
Svet Ganov | 255aece | 2015-07-03 16:03:53 -0700 | [diff] [blame] | 1177 | * You cannot request a permission if your activity sets {@link |
| 1178 | * android.R.styleable#AndroidManifestActivity_noHistory noHistory} to |
| 1179 | * <code>true</code> because in this case the activity would not receive |
| 1180 | * result callbacks including {@link #onRequestPermissionsResult(int, String[], int[])}. |
| 1181 | * </p> |
| 1182 | * <p> |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1183 | * A sample permissions request looks like this: |
| 1184 | * </p> |
| 1185 | * <code><pre><p> |
| 1186 | * private void showContacts() { |
| 1187 | * if (getActivity().checkSelfPermission(Manifest.permission.READ_CONTACTS) |
| 1188 | * != PackageManager.PERMISSION_GRANTED) { |
| 1189 | * requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, |
| 1190 | * PERMISSIONS_REQUEST_READ_CONTACTS); |
| 1191 | * } else { |
| 1192 | * doShowContacts(); |
| 1193 | * } |
| 1194 | * } |
| 1195 | * |
| 1196 | * {@literal @}Override |
| 1197 | * public void onRequestPermissionsResult(int requestCode, String[] permissions, |
| 1198 | * int[] grantResults) { |
| 1199 | * if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS |
| 1200 | * && grantResults[0] == PackageManager.PERMISSION_GRANTED) { |
| 1201 | * doShowContacts(); |
| 1202 | * } |
| 1203 | * } |
| 1204 | * </code></pre></p> |
| 1205 | * |
Svet Ganov | f66381c | 2016-02-18 20:02:36 -0800 | [diff] [blame] | 1206 | * @param permissions The requested permissions. Must me non-null and not empty. |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1207 | * @param requestCode Application specific request code to match with a result |
| 1208 | * reported to {@link #onRequestPermissionsResult(int, String[], int[])}. |
Svet Ganov | 255aece | 2015-07-03 16:03:53 -0700 | [diff] [blame] | 1209 | * Should be >= 0. |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1210 | * |
| 1211 | * @see #onRequestPermissionsResult(int, String[], int[]) |
| 1212 | * @see android.content.Context#checkSelfPermission(String) |
| 1213 | */ |
| 1214 | public final void requestPermissions(@NonNull String[] permissions, int requestCode) { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1215 | if (mHost == null) { |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1216 | throw new IllegalStateException("Fragment " + this + " not attached to Activity"); |
| 1217 | } |
Svetoslav | 970b59c | 2015-06-09 16:05:21 -0700 | [diff] [blame] | 1218 | mHost.onRequestPermissionsFromFragment(this, permissions,requestCode); |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | /** |
| 1222 | * Callback for the result from requesting permissions. This method |
| 1223 | * is invoked for every call on {@link #requestPermissions(String[], int)}. |
Svet Ganov | 0f45c7c | 2015-07-16 16:28:51 -0700 | [diff] [blame] | 1224 | * <p> |
| 1225 | * <strong>Note:</strong> It is possible that the permissions request interaction |
| 1226 | * with the user is interrupted. In this case you will receive empty permissions |
| 1227 | * and results arrays which should be treated as a cancellation. |
| 1228 | * </p> |
Svetoslav | c6d1c34 | 2015-02-26 14:44:43 -0800 | [diff] [blame] | 1229 | * |
| 1230 | * @param requestCode The request code passed in {@link #requestPermissions(String[], int)}. |
| 1231 | * @param permissions The requested permissions. Never null. |
| 1232 | * @param grantResults The grant results for the corresponding permissions |
| 1233 | * which is either {@link android.content.pm.PackageManager#PERMISSION_GRANTED} |
| 1234 | * or {@link android.content.pm.PackageManager#PERMISSION_DENIED}. Never null. |
| 1235 | * |
| 1236 | * @see #requestPermissions(String[], int) |
| 1237 | */ |
| 1238 | public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, |
| 1239 | @NonNull int[] grantResults) { |
| 1240 | /* callback - do nothing */ |
| 1241 | } |
| 1242 | |
| 1243 | /** |
Svetoslav | a2011d2 | 2015-06-03 15:43:59 -0700 | [diff] [blame] | 1244 | * Gets whether you should show UI with rationale for requesting a permission. |
| 1245 | * You should do this only if you do not have the permission and the context in |
| 1246 | * which the permission is requested does not clearly communicate to the user |
| 1247 | * what would be the benefit from granting this permission. |
| 1248 | * <p> |
| 1249 | * For example, if you write a camera app, requesting the camera permission |
| 1250 | * would be expected by the user and no rationale for why it is requested is |
| 1251 | * needed. If however, the app needs location for tagging photos then a non-tech |
| 1252 | * savvy user may wonder how location is related to taking photos. In this case |
| 1253 | * you may choose to show UI with rationale of requesting this permission. |
| 1254 | * </p> |
| 1255 | * |
| 1256 | * @param permission A permission your app wants to request. |
| 1257 | * @return Whether you can show permission rationale UI. |
| 1258 | * |
| 1259 | * @see Context#checkSelfPermission(String) |
| 1260 | * @see #requestPermissions(String[], int) |
| 1261 | * @see #onRequestPermissionsResult(int, String[], int[]) |
| 1262 | */ |
| 1263 | public boolean shouldShowRequestPermissionRationale(@NonNull String permission) { |
| 1264 | if (mHost != null) { |
Svet Ganov | 9e136b8 | 2015-07-16 09:58:38 -0700 | [diff] [blame] | 1265 | return mHost.getContext().getPackageManager() |
| 1266 | .shouldShowRequestPermissionRationale(permission); |
Svetoslav | a2011d2 | 2015-06-03 15:43:59 -0700 | [diff] [blame] | 1267 | } |
| 1268 | return false; |
| 1269 | } |
| 1270 | |
| 1271 | /** |
Dianne Hackborn | 7187ccb | 2011-01-24 23:58:13 -0800 | [diff] [blame] | 1272 | * @hide Hack so that DialogFragment can make its Dialog before creating |
| 1273 | * its views, and the view construction can use the dialog's context for |
| 1274 | * inflation. Maybe this should become a public API. Note sure. |
| 1275 | */ |
| 1276 | public LayoutInflater getLayoutInflater(Bundle savedInstanceState) { |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1277 | final LayoutInflater result = mHost.onGetLayoutInflater(); |
| 1278 | if (mHost.onUseFragmentManagerInflaterFactory()) { |
Adam Powell | 371a809 | 2014-06-20 12:51:12 -0700 | [diff] [blame] | 1279 | getChildFragmentManager(); // Init if needed; use raw implementation below. |
| 1280 | result.setPrivateFactory(mChildFragmentManager.getLayoutInflaterFactory()); |
Adam Powell | 371a809 | 2014-06-20 12:51:12 -0700 | [diff] [blame] | 1281 | } |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1282 | return result; |
Dianne Hackborn | 7187ccb | 2011-01-24 23:58:13 -0800 | [diff] [blame] | 1283 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1284 | |
Dianne Hackborn | 7187ccb | 2011-01-24 23:58:13 -0800 | [diff] [blame] | 1285 | /** |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1286 | * @deprecated Use {@link #onInflate(Context, AttributeSet, Bundle)} instead. |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1287 | */ |
| 1288 | @Deprecated |
| 1289 | public void onInflate(AttributeSet attrs, Bundle savedInstanceState) { |
| 1290 | mCalled = true; |
| 1291 | } |
| 1292 | |
| 1293 | /** |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1294 | * Called when a fragment is being created as part of a view layout |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1295 | * inflation, typically from setting the content view of an activity. This |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1296 | * may be called immediately after the fragment is created from a <fragment> |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 1297 | * tag in a layout file. Note this is <em>before</em> the fragment's |
| 1298 | * {@link #onAttach(Activity)} has been called; all you should do here is |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1299 | * parse the attributes and save them away. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1300 | * |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 1301 | * <p>This is called every time the fragment is inflated, even if it is |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1302 | * being inflated into a new instance with saved state. It typically makes |
| 1303 | * sense to re-parse the parameters each time, to allow them to change with |
| 1304 | * different configurations.</p> |
| 1305 | * |
| 1306 | * <p>Here is a typical implementation of a fragment that can take parameters |
| 1307 | * both through attributes supplied here as well from {@link #getArguments()}:</p> |
| 1308 | * |
| 1309 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentArguments.java |
| 1310 | * fragment} |
| 1311 | * |
| 1312 | * <p>Note that parsing the XML attributes uses a "styleable" resource. The |
| 1313 | * declaration for the styleable used here is:</p> |
| 1314 | * |
| 1315 | * {@sample development/samples/ApiDemos/res/values/attrs.xml fragment_arguments} |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1316 | * |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1317 | * <p>The fragment can then be declared within its activity's content layout |
| 1318 | * through a tag like this:</p> |
| 1319 | * |
| 1320 | * {@sample development/samples/ApiDemos/res/layout/fragment_arguments.xml from_attributes} |
| 1321 | * |
| 1322 | * <p>This fragment can also be created dynamically from arguments given |
| 1323 | * at runtime in the arguments Bundle; here is an example of doing so at |
| 1324 | * creation of the containing activity:</p> |
| 1325 | * |
| 1326 | * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/FragmentArguments.java |
| 1327 | * create} |
| 1328 | * |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1329 | * @param context The Context that is inflating this fragment. |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1330 | * @param attrs The attributes at the tag where the fragment is |
| 1331 | * being created. |
Dianne Hackborn | 6e8304e | 2010-05-14 00:42:53 -0700 | [diff] [blame] | 1332 | * @param savedInstanceState If the fragment is being re-created from |
| 1333 | * a previous saved state, this is the state. |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1334 | */ |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1335 | public void onInflate(Context context, AttributeSet attrs, Bundle savedInstanceState) { |
Dianne Hackborn | e3a7f62 | 2011-03-03 21:48:24 -0800 | [diff] [blame] | 1336 | onInflate(attrs, savedInstanceState); |
Dianne Hackborn | ba51c3d | 2010-05-05 18:49:48 -0700 | [diff] [blame] | 1337 | mCalled = true; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1338 | |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1339 | TypedArray a = context.obtainStyledAttributes(attrs, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1340 | com.android.internal.R.styleable.Fragment); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1341 | mEnterTransition = loadTransition(context, a, mEnterTransition, null, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1342 | com.android.internal.R.styleable.Fragment_fragmentEnterTransition); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1343 | mReturnTransition = loadTransition(context, a, mReturnTransition, USE_DEFAULT_TRANSITION, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1344 | com.android.internal.R.styleable.Fragment_fragmentReturnTransition); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1345 | mExitTransition = loadTransition(context, a, mExitTransition, null, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1346 | com.android.internal.R.styleable.Fragment_fragmentExitTransition); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1347 | mReenterTransition = loadTransition(context, a, mReenterTransition, USE_DEFAULT_TRANSITION, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1348 | com.android.internal.R.styleable.Fragment_fragmentReenterTransition); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1349 | mSharedElementEnterTransition = loadTransition(context, a, mSharedElementEnterTransition, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1350 | null, com.android.internal.R.styleable.Fragment_fragmentSharedElementEnterTransition); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1351 | mSharedElementReturnTransition = loadTransition(context, a, mSharedElementReturnTransition, |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1352 | USE_DEFAULT_TRANSITION, |
| 1353 | com.android.internal.R.styleable.Fragment_fragmentSharedElementReturnTransition); |
| 1354 | if (mAllowEnterTransitionOverlap == null) { |
| 1355 | mAllowEnterTransitionOverlap = a.getBoolean( |
| 1356 | com.android.internal.R.styleable.Fragment_fragmentAllowEnterTransitionOverlap, true); |
| 1357 | } |
| 1358 | if (mAllowReturnTransitionOverlap == null) { |
| 1359 | mAllowReturnTransitionOverlap = a.getBoolean( |
| 1360 | com.android.internal.R.styleable.Fragment_fragmentAllowReturnTransitionOverlap, true); |
| 1361 | } |
| 1362 | a.recycle(); |
Todd Kennedy | 434bd65 | 2015-05-04 12:29:50 -0700 | [diff] [blame] | 1363 | |
| 1364 | final Activity hostActivity = mHost == null ? null : mHost.getActivity(); |
| 1365 | if (hostActivity != null) { |
| 1366 | mCalled = false; |
| 1367 | onInflate(hostActivity, attrs, savedInstanceState); |
| 1368 | } |
Dianne Hackborn | ba51c3d | 2010-05-05 18:49:48 -0700 | [diff] [blame] | 1369 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1370 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1371 | /** |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1372 | * @deprecated Use {@link #onInflate(Context, AttributeSet, Bundle)} instead. |
| 1373 | */ |
| 1374 | @Deprecated |
| 1375 | public void onInflate(Activity activity, AttributeSet attrs, Bundle savedInstanceState) { |
| 1376 | mCalled = true; |
| 1377 | } |
| 1378 | |
| 1379 | /** |
| 1380 | * Called when a fragment is first attached to its context. |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1381 | * {@link #onCreate(Bundle)} will be called after this. |
| 1382 | */ |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1383 | public void onAttach(Context context) { |
| 1384 | mCalled = true; |
| 1385 | final Activity hostActivity = mHost == null ? null : mHost.getActivity(); |
| 1386 | if (hostActivity != null) { |
| 1387 | mCalled = false; |
| 1388 | onAttach(hostActivity); |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * @deprecated Use {@link #onAttach(Context)} instead. |
| 1394 | */ |
| 1395 | @Deprecated |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1396 | public void onAttach(Activity activity) { |
| 1397 | mCalled = true; |
| 1398 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1399 | |
Chet Haase | 811ed106 | 2010-08-06 10:38:15 -0700 | [diff] [blame] | 1400 | /** |
| 1401 | * Called when a fragment loads an animation. |
| 1402 | */ |
Chet Haase | a18a86b | 2010-09-07 13:20:00 -0700 | [diff] [blame] | 1403 | public Animator onCreateAnimator(int transit, boolean enter, int nextAnim) { |
Dianne Hackborn | f121be7 | 2010-05-06 14:10:32 -0700 | [diff] [blame] | 1404 | return null; |
| 1405 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1406 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1407 | /** |
| 1408 | * Called to do initial creation of a fragment. This is called after |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1409 | * {@link #onAttach(Activity)} and before |
Felipe Leme | b144457 | 2015-11-03 17:39:07 -0800 | [diff] [blame] | 1410 | * {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}, but is not called if the fragment |
| 1411 | * instance is retained across Activity re-creation (see {@link #setRetainInstance(boolean)}). |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1412 | * |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1413 | * <p>Note that this can be called while the fragment's activity is |
| 1414 | * still in the process of being created. As such, you can not rely |
| 1415 | * on things like the activity's content view hierarchy being initialized |
| 1416 | * at this point. If you want to do work once the activity itself is |
| 1417 | * created, see {@link #onActivityCreated(Bundle)}. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1418 | * |
Adam Powell | 592df7d | 2016-01-14 12:58:23 -0800 | [diff] [blame] | 1419 | * <p>If your app's <code>targetSdkVersion</code> is 23 or lower, child fragments |
| 1420 | * being restored from the savedInstanceState are restored after <code>onCreate</code> |
| 1421 | * returns. When targeting N or above and running on an N or newer platform version |
| 1422 | * they are restored by <code>Fragment.onCreate</code>.</p> |
| 1423 | * |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1424 | * @param savedInstanceState If the fragment is being re-created from |
| 1425 | * a previous saved state, this is the state. |
| 1426 | */ |
Scott Kennedy | 3c32b62 | 2015-02-22 16:58:58 -0800 | [diff] [blame] | 1427 | public void onCreate(@Nullable Bundle savedInstanceState) { |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1428 | mCalled = true; |
Adam Powell | 592df7d | 2016-01-14 12:58:23 -0800 | [diff] [blame] | 1429 | final Context context = getContext(); |
| 1430 | final int version = context != null ? context.getApplicationInfo().targetSdkVersion : 0; |
| 1431 | if (version >= Build.VERSION_CODES.N) { |
| 1432 | if (savedInstanceState != null) { |
| 1433 | Parcelable p = savedInstanceState.getParcelable(Activity.FRAGMENTS_TAG); |
| 1434 | if (p != null) { |
| 1435 | if (mChildFragmentManager == null) { |
| 1436 | instantiateChildFragmentManager(); |
| 1437 | } |
Adam Powell | 44ba79e | 2016-02-04 16:20:37 -0800 | [diff] [blame] | 1438 | mChildFragmentManager.restoreAllState(p, mChildNonConfig); |
| 1439 | mChildNonConfig = null; |
Adam Powell | 592df7d | 2016-01-14 12:58:23 -0800 | [diff] [blame] | 1440 | mChildFragmentManager.dispatchCreate(); |
| 1441 | } |
| 1442 | } |
| 1443 | } |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1444 | } |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 1445 | |
Dianne Hackborn | 16f6e89 | 2011-04-15 19:00:20 -0700 | [diff] [blame] | 1446 | /** |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1447 | * Called to have the fragment instantiate its user interface view. |
| 1448 | * This is optional, and non-graphical fragments can return null (which |
| 1449 | * is the default implementation). This will be called between |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1450 | * {@link #onCreate(Bundle)} and {@link #onActivityCreated(Bundle)}. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1451 | * |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1452 | * <p>If you return a View from here, you will later be called in |
| 1453 | * {@link #onDestroyView} when the view is being released. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1454 | * |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1455 | * @param inflater The LayoutInflater object that can be used to inflate |
| 1456 | * any views in the fragment, |
| 1457 | * @param container If non-null, this is the parent view that the fragment's |
| 1458 | * UI should be attached to. The fragment should not add the view itself, |
| 1459 | * but this can be used to generate the LayoutParams of the view. |
| 1460 | * @param savedInstanceState If non-null, this fragment is being re-constructed |
| 1461 | * from a previous saved state as given here. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1462 | * |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1463 | * @return Return the View for the fragment's UI, or null. |
| 1464 | */ |
Tor Norbye | d9273d6 | 2013-05-30 15:59:53 -0700 | [diff] [blame] | 1465 | @Nullable |
| 1466 | public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1467 | Bundle savedInstanceState) { |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1468 | return null; |
| 1469 | } |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 1470 | |
| 1471 | /** |
| 1472 | * Called immediately after {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)} |
| 1473 | * has returned, but before any saved state has been restored in to the view. |
| 1474 | * This gives subclasses a chance to initialize themselves once |
| 1475 | * they know their view hierarchy has been completely created. The fragment's |
| 1476 | * view hierarchy is not however attached to its parent at this point. |
| 1477 | * @param view The View returned by {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}. |
| 1478 | * @param savedInstanceState If non-null, this fragment is being re-constructed |
| 1479 | * from a previous saved state as given here. |
| 1480 | */ |
Tor Norbye | d9273d6 | 2013-05-30 15:59:53 -0700 | [diff] [blame] | 1481 | public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 1482 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1483 | |
Scott Main | 662cc7a4 | 2011-01-17 15:02:07 -0800 | [diff] [blame] | 1484 | /** |
| 1485 | * Get the root view for the fragment's layout (the one returned by {@link #onCreateView}), |
| 1486 | * if provided. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1487 | * |
Scott Main | 662cc7a4 | 2011-01-17 15:02:07 -0800 | [diff] [blame] | 1488 | * @return The fragment's root view, or null if it has no layout. |
| 1489 | */ |
Tor Norbye | d9273d6 | 2013-05-30 15:59:53 -0700 | [diff] [blame] | 1490 | @Nullable |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1491 | public View getView() { |
| 1492 | return mView; |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1493 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1494 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1495 | /** |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1496 | * Called when the fragment's activity has been created and this |
| 1497 | * fragment's view hierarchy instantiated. It can be used to do final |
| 1498 | * initialization once these pieces are in place, such as retrieving |
| 1499 | * views or restoring state. It is also useful for fragments that use |
| 1500 | * {@link #setRetainInstance(boolean)} to retain their instance, |
| 1501 | * as this callback tells the fragment when it is fully associated with |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1502 | * the new activity instance. This is called after {@link #onCreateView} |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 1503 | * and before {@link #onViewStateRestored(Bundle)}. |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 1504 | * |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1505 | * @param savedInstanceState If the fragment is being re-created from |
| 1506 | * a previous saved state, this is the state. |
| 1507 | */ |
Scott Kennedy | 3c32b62 | 2015-02-22 16:58:58 -0800 | [diff] [blame] | 1508 | public void onActivityCreated(@Nullable Bundle savedInstanceState) { |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1509 | mCalled = true; |
| 1510 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 1511 | |
| 1512 | /** |
| 1513 | * Called when all saved state has been restored into the view hierarchy |
| 1514 | * of the fragment. This can be used to do initialization based on saved |
| 1515 | * state that you are letting the view hierarchy track itself, such as |
| 1516 | * whether check box widgets are currently checked. This is called |
| 1517 | * after {@link #onActivityCreated(Bundle)} and before |
| 1518 | * {@link #onStart()}. |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 1519 | * |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 1520 | * @param savedInstanceState If the fragment is being re-created from |
| 1521 | * a previous saved state, this is the state. |
| 1522 | */ |
| 1523 | public void onViewStateRestored(Bundle savedInstanceState) { |
| 1524 | mCalled = true; |
| 1525 | } |
| 1526 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1527 | /** |
| 1528 | * Called when the Fragment is visible to the user. This is generally |
| 1529 | * tied to {@link Activity#onStart() Activity.onStart} of the containing |
| 1530 | * Activity's lifecycle. |
| 1531 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1532 | public void onStart() { |
| 1533 | mCalled = true; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1534 | |
Dianne Hackborn | fb3cffe | 2010-10-25 17:08:56 -0700 | [diff] [blame] | 1535 | if (!mLoadersStarted) { |
| 1536 | mLoadersStarted = true; |
| 1537 | if (!mCheckedForLoaderManager) { |
| 1538 | mCheckedForLoaderManager = true; |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1539 | mLoaderManager = mHost.getLoaderManager(mWho, mLoadersStarted, false); |
Dianne Hackborn | fb3cffe | 2010-10-25 17:08:56 -0700 | [diff] [blame] | 1540 | } |
| 1541 | if (mLoaderManager != null) { |
| 1542 | mLoaderManager.doStart(); |
| 1543 | } |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1544 | } |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1545 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1546 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1547 | /** |
| 1548 | * Called when the fragment is visible to the user and actively running. |
| 1549 | * This is generally |
| 1550 | * tied to {@link Activity#onResume() Activity.onResume} of the containing |
| 1551 | * Activity's lifecycle. |
| 1552 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1553 | public void onResume() { |
| 1554 | mCalled = true; |
| 1555 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1556 | |
Dianne Hackborn | 7277820 | 2010-08-20 18:26:01 -0700 | [diff] [blame] | 1557 | /** |
| 1558 | * Called to ask the fragment to save its current dynamic state, so it |
| 1559 | * can later be reconstructed in a new instance of its process is |
| 1560 | * restarted. If a new instance of the fragment later needs to be |
| 1561 | * created, the data you place in the Bundle here will be available |
| 1562 | * in the Bundle given to {@link #onCreate(Bundle)}, |
| 1563 | * {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}, and |
| 1564 | * {@link #onActivityCreated(Bundle)}. |
| 1565 | * |
| 1566 | * <p>This corresponds to {@link Activity#onSaveInstanceState(Bundle) |
Daisuke Miyakawa | 2f76176 | 2010-09-12 16:53:17 -0700 | [diff] [blame] | 1567 | * Activity.onSaveInstanceState(Bundle)} and most of the discussion there |
Dianne Hackborn | 7277820 | 2010-08-20 18:26:01 -0700 | [diff] [blame] | 1568 | * applies here as well. Note however: <em>this method may be called |
| 1569 | * at any time before {@link #onDestroy()}</em>. There are many situations |
| 1570 | * where a fragment may be mostly torn down (such as when placed on the |
| 1571 | * back stack with no UI showing), but its state will not be saved until |
| 1572 | * its owning activity actually needs to save its state. |
| 1573 | * |
| 1574 | * @param outState Bundle in which to place your saved state. |
| 1575 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1576 | public void onSaveInstanceState(Bundle outState) { |
| 1577 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1578 | |
Wale Ogunwale | 7c79681 | 2016-01-29 21:13:50 -0800 | [diff] [blame] | 1579 | /** |
| 1580 | * Called when the Fragment's activity changes from fullscreen mode to multi-window mode and |
| 1581 | * visa-versa. This is generally tied to {@link Activity#onMultiWindowChanged} of the containing |
| 1582 | * Activity. |
| 1583 | * |
| 1584 | * @param inMultiWindow True if the activity is in multi-window mode. |
| 1585 | */ |
| 1586 | public void onMultiWindowChanged(boolean inMultiWindow) { |
| 1587 | } |
| 1588 | |
| 1589 | /** |
| 1590 | * Called by the system when the activity changes to and from picture-in-picture mode. This is |
| 1591 | * generally tied to {@link Activity#onPictureInPictureChanged} of the containing Activity. |
| 1592 | * |
| 1593 | * @param inPictureInPicture True if the activity is in picture-in-picture mode. |
| 1594 | */ |
| 1595 | public void onPictureInPictureChanged(boolean inPictureInPicture) { |
| 1596 | } |
| 1597 | |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1598 | public void onConfigurationChanged(Configuration newConfig) { |
| 1599 | mCalled = true; |
| 1600 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1601 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1602 | /** |
| 1603 | * Called when the Fragment is no longer resumed. This is generally |
| 1604 | * tied to {@link Activity#onPause() Activity.onPause} of the containing |
| 1605 | * Activity's lifecycle. |
| 1606 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1607 | public void onPause() { |
| 1608 | mCalled = true; |
| 1609 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1610 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1611 | /** |
| 1612 | * Called when the Fragment is no longer started. This is generally |
| 1613 | * tied to {@link Activity#onStop() Activity.onStop} of the containing |
| 1614 | * Activity's lifecycle. |
| 1615 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1616 | public void onStop() { |
| 1617 | mCalled = true; |
| 1618 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1619 | |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1620 | public void onLowMemory() { |
| 1621 | mCalled = true; |
| 1622 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1623 | |
Dianne Hackborn | c68c913 | 2011-07-29 01:25:18 -0700 | [diff] [blame] | 1624 | public void onTrimMemory(int level) { |
| 1625 | mCalled = true; |
| 1626 | } |
| 1627 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1628 | /** |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1629 | * Called when the view previously created by {@link #onCreateView} has |
| 1630 | * been detached from the fragment. The next time the fragment needs |
| 1631 | * to be displayed, a new view will be created. This is called |
Dianne Hackborn | def1537 | 2010-08-15 12:43:52 -0700 | [diff] [blame] | 1632 | * after {@link #onStop()} and before {@link #onDestroy()}. It is called |
| 1633 | * <em>regardless</em> of whether {@link #onCreateView} returned a |
| 1634 | * non-null view. Internally it is called after the view's state has |
| 1635 | * been saved but before it has been removed from its parent. |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1636 | */ |
| 1637 | public void onDestroyView() { |
| 1638 | mCalled = true; |
| 1639 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1640 | |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1641 | /** |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1642 | * Called when the fragment is no longer in use. This is called |
| 1643 | * after {@link #onStop()} and before {@link #onDetach()}. |
| 1644 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1645 | public void onDestroy() { |
| 1646 | mCalled = true; |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 1647 | //Log.v("foo", "onDestroy: mCheckedForLoaderManager=" + mCheckedForLoaderManager |
| 1648 | // + " mLoaderManager=" + mLoaderManager); |
| 1649 | if (!mCheckedForLoaderManager) { |
| 1650 | mCheckedForLoaderManager = true; |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1651 | mLoaderManager = mHost.getLoaderManager(mWho, mLoadersStarted, false); |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 1652 | } |
Dianne Hackborn | c801768 | 2010-07-06 13:34:38 -0700 | [diff] [blame] | 1653 | if (mLoaderManager != null) { |
| 1654 | mLoaderManager.doDestroy(); |
| 1655 | } |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1656 | } |
Dianne Hackborn | 5ae74d6 | 2010-05-19 19:14:57 -0700 | [diff] [blame] | 1657 | |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1658 | /** |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 1659 | * Called by the fragment manager once this fragment has been removed, |
| 1660 | * so that we don't have any left-over state if the application decides |
| 1661 | * to re-use the instance. This only clears state that the framework |
| 1662 | * internally manages, not things the application sets. |
| 1663 | */ |
| 1664 | void initState() { |
| 1665 | mIndex = -1; |
| 1666 | mWho = null; |
| 1667 | mAdded = false; |
| 1668 | mRemoving = false; |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 1669 | mFromLayout = false; |
| 1670 | mInLayout = false; |
| 1671 | mRestored = false; |
| 1672 | mBackStackNesting = 0; |
| 1673 | mFragmentManager = null; |
Tim Kilbourn | 7071786 | 2014-02-28 01:00:06 -0800 | [diff] [blame] | 1674 | mChildFragmentManager = null; |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 1675 | mHost = null; |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 1676 | mFragmentId = 0; |
| 1677 | mContainerId = 0; |
| 1678 | mTag = null; |
| 1679 | mHidden = false; |
| 1680 | mDetached = false; |
| 1681 | mRetaining = false; |
| 1682 | mLoaderManager = null; |
| 1683 | mLoadersStarted = false; |
| 1684 | mCheckedForLoaderManager = false; |
| 1685 | } |
| 1686 | |
| 1687 | /** |
Felipe Leme | b144457 | 2015-11-03 17:39:07 -0800 | [diff] [blame] | 1688 | * Called when the fragment is no longer attached to its activity. This is called after |
| 1689 | * {@link #onDestroy()}, except in the cases where the fragment instance is retained across |
| 1690 | * Activity re-creation (see {@link #setRetainInstance(boolean)}), in which case it is called |
| 1691 | * after {@link #onStop()}. |
Dianne Hackborn | b4bc78b | 2010-05-12 18:59:50 -0700 | [diff] [blame] | 1692 | */ |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 1693 | public void onDetach() { |
| 1694 | mCalled = true; |
| 1695 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1696 | |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1697 | /** |
| 1698 | * Initialize the contents of the Activity's standard options menu. You |
| 1699 | * should place your menu items in to <var>menu</var>. For this method |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1700 | * to be called, you must have first called {@link #setHasOptionsMenu}. See |
| 1701 | * {@link Activity#onCreateOptionsMenu(Menu) Activity.onCreateOptionsMenu} |
| 1702 | * for more information. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1703 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1704 | * @param menu The options menu in which you place your items. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1705 | * |
Wink Saville | 4dc643e | 2010-06-12 22:16:41 -0700 | [diff] [blame] | 1706 | * @see #setHasOptionsMenu |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1707 | * @see #onPrepareOptionsMenu |
| 1708 | * @see #onOptionsItemSelected |
| 1709 | */ |
| 1710 | public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { |
| 1711 | } |
| 1712 | |
| 1713 | /** |
| 1714 | * Prepare the Screen's standard options menu to be displayed. This is |
| 1715 | * called right before the menu is shown, every time it is shown. You can |
| 1716 | * use this method to efficiently enable/disable items or otherwise |
| 1717 | * dynamically modify the contents. See |
| 1718 | * {@link Activity#onPrepareOptionsMenu(Menu) Activity.onPrepareOptionsMenu} |
| 1719 | * for more information. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1720 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1721 | * @param menu The options menu as last shown or first initialized by |
| 1722 | * onCreateOptionsMenu(). |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1723 | * |
Wink Saville | 4dc643e | 2010-06-12 22:16:41 -0700 | [diff] [blame] | 1724 | * @see #setHasOptionsMenu |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1725 | * @see #onCreateOptionsMenu |
| 1726 | */ |
| 1727 | public void onPrepareOptionsMenu(Menu menu) { |
| 1728 | } |
| 1729 | |
| 1730 | /** |
Dianne Hackborn | 8eb2e24 | 2010-11-01 12:31:24 -0700 | [diff] [blame] | 1731 | * Called when this fragment's option menu items are no longer being |
| 1732 | * included in the overall options menu. Receiving this call means that |
| 1733 | * the menu needed to be rebuilt, but this fragment's items were not |
| 1734 | * included in the newly built menu (its {@link #onCreateOptionsMenu(Menu, MenuInflater)} |
| 1735 | * was not called). |
| 1736 | */ |
| 1737 | public void onDestroyOptionsMenu() { |
| 1738 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1739 | |
Dianne Hackborn | 8eb2e24 | 2010-11-01 12:31:24 -0700 | [diff] [blame] | 1740 | /** |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1741 | * This hook is called whenever an item in your options menu is selected. |
| 1742 | * The default implementation simply returns false to have the normal |
| 1743 | * processing happen (calling the item's Runnable or sending a message to |
| 1744 | * its Handler as appropriate). You can use this method for any items |
| 1745 | * for which you would like to do processing without those other |
| 1746 | * facilities. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1747 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1748 | * <p>Derived classes should call through to the base class for it to |
| 1749 | * perform the default menu handling. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1750 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1751 | * @param item The menu item that was selected. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1752 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1753 | * @return boolean Return false to allow normal menu processing to |
| 1754 | * proceed, true to consume it here. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1755 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1756 | * @see #onCreateOptionsMenu |
| 1757 | */ |
| 1758 | public boolean onOptionsItemSelected(MenuItem item) { |
| 1759 | return false; |
| 1760 | } |
| 1761 | |
| 1762 | /** |
| 1763 | * This hook is called whenever the options menu is being closed (either by the user canceling |
| 1764 | * the menu with the back/menu button, or when an item is selected). |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1765 | * |
Dianne Hackborn | b31e84bc | 2010-06-08 18:04:35 -0700 | [diff] [blame] | 1766 | * @param menu The options menu as last shown or first initialized by |
| 1767 | * onCreateOptionsMenu(). |
| 1768 | */ |
| 1769 | public void onOptionsMenuClosed(Menu menu) { |
| 1770 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1771 | |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1772 | /** |
| 1773 | * Called when a context menu for the {@code view} is about to be shown. |
| 1774 | * Unlike {@link #onCreateOptionsMenu}, this will be called every |
| 1775 | * time the context menu is about to be shown and should be populated for |
| 1776 | * the view (or item inside the view for {@link AdapterView} subclasses, |
| 1777 | * this can be found in the {@code menuInfo})). |
| 1778 | * <p> |
| 1779 | * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an |
| 1780 | * item has been selected. |
| 1781 | * <p> |
| 1782 | * The default implementation calls up to |
| 1783 | * {@link Activity#onCreateContextMenu Activity.onCreateContextMenu}, though |
| 1784 | * you can not call this implementation if you don't want that behavior. |
| 1785 | * <p> |
| 1786 | * It is not safe to hold onto the context menu after this method returns. |
| 1787 | * {@inheritDoc} |
| 1788 | */ |
| 1789 | public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { |
| 1790 | getActivity().onCreateContextMenu(menu, v, menuInfo); |
| 1791 | } |
| 1792 | |
| 1793 | /** |
| 1794 | * Registers a context menu to be shown for the given view (multiple views |
| 1795 | * can show the context menu). This method will set the |
| 1796 | * {@link OnCreateContextMenuListener} on the view to this fragment, so |
| 1797 | * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be |
| 1798 | * called when it is time to show the context menu. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1799 | * |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1800 | * @see #unregisterForContextMenu(View) |
| 1801 | * @param view The view that should show a context menu. |
| 1802 | */ |
| 1803 | public void registerForContextMenu(View view) { |
| 1804 | view.setOnCreateContextMenuListener(this); |
| 1805 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1806 | |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1807 | /** |
| 1808 | * Prevents a context menu to be shown for the given view. This method will |
| 1809 | * remove the {@link OnCreateContextMenuListener} on the view. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1810 | * |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1811 | * @see #registerForContextMenu(View) |
| 1812 | * @param view The view that should stop showing a context menu. |
| 1813 | */ |
| 1814 | public void unregisterForContextMenu(View view) { |
| 1815 | view.setOnCreateContextMenuListener(null); |
| 1816 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1817 | |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1818 | /** |
| 1819 | * This hook is called whenever an item in a context menu is selected. The |
| 1820 | * default implementation simply returns false to have the normal processing |
| 1821 | * happen (calling the item's Runnable or sending a message to its Handler |
| 1822 | * as appropriate). You can use this method for any items for which you |
| 1823 | * would like to do processing without those other facilities. |
| 1824 | * <p> |
| 1825 | * Use {@link MenuItem#getMenuInfo()} to get extra information set by the |
| 1826 | * View that added this menu item. |
| 1827 | * <p> |
| 1828 | * Derived classes should call through to the base class for it to perform |
| 1829 | * the default menu handling. |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1830 | * |
Dianne Hackborn | 5ddd127 | 2010-06-12 10:15:28 -0700 | [diff] [blame] | 1831 | * @param item The context menu item that was selected. |
| 1832 | * @return boolean Return false to allow normal context menu processing to |
| 1833 | * proceed, true to consume it here. |
| 1834 | */ |
| 1835 | public boolean onContextItemSelected(MenuItem item) { |
| 1836 | return false; |
| 1837 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1838 | |
| 1839 | /** |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1840 | * When custom transitions are used with Fragments, the enter transition callback |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1841 | * is called when this Fragment is attached or detached when not popping the back stack. |
| 1842 | * |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1843 | * @param callback Used to manipulate the shared element transitions on this Fragment |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1844 | * when added not as a pop from the back stack. |
| 1845 | */ |
George Mount | 85ea498 | 2014-09-12 14:16:18 -0700 | [diff] [blame] | 1846 | public void setEnterSharedElementCallback(SharedElementCallback callback) { |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1847 | if (callback == null) { |
| 1848 | callback = SharedElementCallback.NULL_CALLBACK; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1849 | } |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1850 | mEnterTransitionCallback = callback; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1851 | } |
| 1852 | |
| 1853 | /** |
George Mount | 85ea498 | 2014-09-12 14:16:18 -0700 | [diff] [blame] | 1854 | * @hide |
| 1855 | */ |
| 1856 | public void setEnterSharedElementTransitionCallback(SharedElementCallback callback) { |
| 1857 | setEnterSharedElementCallback(callback); |
| 1858 | } |
| 1859 | |
| 1860 | /** |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1861 | * When custom transitions are used with Fragments, the exit transition callback |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1862 | * is called when this Fragment is attached or detached when popping the back stack. |
| 1863 | * |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1864 | * @param callback Used to manipulate the shared element transitions on this Fragment |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1865 | * when added as a pop from the back stack. |
| 1866 | */ |
George Mount | 85ea498 | 2014-09-12 14:16:18 -0700 | [diff] [blame] | 1867 | public void setExitSharedElementCallback(SharedElementCallback callback) { |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1868 | if (callback == null) { |
| 1869 | callback = SharedElementCallback.NULL_CALLBACK; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1870 | } |
George Mount | 6558056 | 2014-08-29 08:15:48 -0700 | [diff] [blame] | 1871 | mExitTransitionCallback = callback; |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1872 | } |
| 1873 | |
| 1874 | /** |
George Mount | 85ea498 | 2014-09-12 14:16:18 -0700 | [diff] [blame] | 1875 | * @hide |
| 1876 | */ |
| 1877 | public void setExitSharedElementTransitionCallback(SharedElementCallback callback) { |
| 1878 | setExitSharedElementCallback(callback); |
| 1879 | } |
| 1880 | |
| 1881 | /** |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 1882 | * Sets the Transition that will be used to move Views into the initial scene. The entering |
| 1883 | * Views will be those that are regular Views or ViewGroups that have |
| 1884 | * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1885 | * {@link android.transition.Visibility} as entering is governed by changing visibility from |
| 1886 | * {@link View#INVISIBLE} to {@link View#VISIBLE}. If <code>transition</code> is null, |
| 1887 | * entering Views will remain unaffected. |
| 1888 | * |
| 1889 | * @param transition The Transition to use to move Views into the initial Scene. |
| 1890 | * @attr ref android.R.styleable#Fragment_fragmentEnterTransition |
| 1891 | */ |
| 1892 | public void setEnterTransition(Transition transition) { |
| 1893 | mEnterTransition = transition; |
| 1894 | } |
| 1895 | |
| 1896 | /** |
| 1897 | * Returns the Transition that will be used to move Views into the initial scene. The entering |
| 1898 | * Views will be those that are regular Views or ViewGroups that have |
| 1899 | * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1900 | * {@link android.transition.Visibility} as entering is governed by changing visibility from |
| 1901 | * {@link View#INVISIBLE} to {@link View#VISIBLE}. |
| 1902 | * |
| 1903 | * @return the Transition to use to move Views into the initial Scene. |
| 1904 | * @attr ref android.R.styleable#Fragment_fragmentEnterTransition |
| 1905 | */ |
| 1906 | public Transition getEnterTransition() { |
| 1907 | return mEnterTransition; |
| 1908 | } |
| 1909 | |
| 1910 | /** |
| 1911 | * Sets the Transition that will be used to move Views out of the scene when the Fragment is |
| 1912 | * preparing to be removed, hidden, or detached because of popping the back stack. The exiting |
| 1913 | * Views will be those that are regular Views or ViewGroups that have |
| 1914 | * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1915 | * {@link android.transition.Visibility} as entering is governed by changing visibility from |
| 1916 | * {@link View#VISIBLE} to {@link View#INVISIBLE}. If <code>transition</code> is null, |
| 1917 | * entering Views will remain unaffected. If nothing is set, the default will be to |
| 1918 | * use the same value as set in {@link #setEnterTransition(android.transition.Transition)}. |
| 1919 | * |
| 1920 | * @param transition The Transition to use to move Views out of the Scene when the Fragment |
| 1921 | * is preparing to close. |
| 1922 | * @attr ref android.R.styleable#Fragment_fragmentExitTransition |
| 1923 | */ |
| 1924 | public void setReturnTransition(Transition transition) { |
| 1925 | mReturnTransition = transition; |
| 1926 | } |
| 1927 | |
| 1928 | /** |
| 1929 | * Returns the Transition that will be used to move Views out of the scene when the Fragment is |
| 1930 | * preparing to be removed, hidden, or detached because of popping the back stack. The exiting |
| 1931 | * Views will be those that are regular Views or ViewGroups that have |
| 1932 | * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1933 | * {@link android.transition.Visibility} as entering is governed by changing visibility from |
| 1934 | * {@link View#VISIBLE} to {@link View#INVISIBLE}. If <code>transition</code> is null, |
| 1935 | * entering Views will remain unaffected. |
| 1936 | * |
| 1937 | * @return the Transition to use to move Views out of the Scene when the Fragment |
| 1938 | * is preparing to close. |
| 1939 | * @attr ref android.R.styleable#Fragment_fragmentExitTransition |
| 1940 | */ |
| 1941 | public Transition getReturnTransition() { |
| 1942 | return mReturnTransition == USE_DEFAULT_TRANSITION ? getEnterTransition() |
| 1943 | : mReturnTransition; |
| 1944 | } |
| 1945 | |
| 1946 | /** |
| 1947 | * Sets the Transition that will be used to move Views out of the scene when the |
| 1948 | * fragment is removed, hidden, or detached when not popping the back stack. |
| 1949 | * The exiting Views will be those that are regular Views or ViewGroups that |
| 1950 | * have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1951 | * {@link android.transition.Visibility} as exiting is governed by changing visibility |
| 1952 | * from {@link View#VISIBLE} to {@link View#INVISIBLE}. If transition is null, the views will |
| 1953 | * remain unaffected. |
| 1954 | * |
| 1955 | * @param transition The Transition to use to move Views out of the Scene when the Fragment |
| 1956 | * is being closed not due to popping the back stack. |
| 1957 | * @attr ref android.R.styleable#Fragment_fragmentExitTransition |
| 1958 | */ |
| 1959 | public void setExitTransition(Transition transition) { |
| 1960 | mExitTransition = transition; |
| 1961 | } |
| 1962 | |
| 1963 | /** |
| 1964 | * Returns the Transition that will be used to move Views out of the scene when the |
| 1965 | * fragment is removed, hidden, or detached when not popping the back stack. |
| 1966 | * The exiting Views will be those that are regular Views or ViewGroups that |
| 1967 | * have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend |
| 1968 | * {@link android.transition.Visibility} as exiting is governed by changing visibility |
| 1969 | * from {@link View#VISIBLE} to {@link View#INVISIBLE}. If transition is null, the views will |
| 1970 | * remain unaffected. |
| 1971 | * |
| 1972 | * @return the Transition to use to move Views out of the Scene when the Fragment |
| 1973 | * is being closed not due to popping the back stack. |
| 1974 | * @attr ref android.R.styleable#Fragment_fragmentExitTransition |
| 1975 | */ |
| 1976 | public Transition getExitTransition() { |
| 1977 | return mExitTransition; |
| 1978 | } |
| 1979 | |
| 1980 | /** |
| 1981 | * Sets the Transition that will be used to move Views in to the scene when returning due |
| 1982 | * to popping a back stack. The entering Views will be those that are regular Views |
| 1983 | * or ViewGroups that have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions |
| 1984 | * will extend {@link android.transition.Visibility} as exiting is governed by changing |
| 1985 | * visibility from {@link View#VISIBLE} to {@link View#INVISIBLE}. If transition is null, |
| 1986 | * the views will remain unaffected. If nothing is set, the default will be to use the same |
| 1987 | * transition as {@link #setExitTransition(android.transition.Transition)}. |
| 1988 | * |
| 1989 | * @param transition The Transition to use to move Views into the scene when reentering from a |
| 1990 | * previously-started Activity. |
| 1991 | * @attr ref android.R.styleable#Fragment_fragmentReenterTransition |
| 1992 | */ |
| 1993 | public void setReenterTransition(Transition transition) { |
| 1994 | mReenterTransition = transition; |
| 1995 | } |
| 1996 | |
| 1997 | /** |
| 1998 | * Returns the Transition that will be used to move Views in to the scene when returning due |
| 1999 | * to popping a back stack. The entering Views will be those that are regular Views |
| 2000 | * or ViewGroups that have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions |
| 2001 | * will extend {@link android.transition.Visibility} as exiting is governed by changing |
| 2002 | * visibility from {@link View#VISIBLE} to {@link View#INVISIBLE}. If transition is null, |
| 2003 | * the views will remain unaffected. If nothing is set, the default will be to use the same |
| 2004 | * transition as {@link #setExitTransition(android.transition.Transition)}. |
| 2005 | * |
| 2006 | * @return the Transition to use to move Views into the scene when reentering from a |
| 2007 | * previously-started Activity. |
| 2008 | * @attr ref android.R.styleable#Fragment_fragmentReenterTransition |
| 2009 | */ |
| 2010 | public Transition getReenterTransition() { |
| 2011 | return mReenterTransition == USE_DEFAULT_TRANSITION ? getExitTransition() |
| 2012 | : mReenterTransition; |
| 2013 | } |
| 2014 | |
| 2015 | /** |
| 2016 | * Sets the Transition that will be used for shared elements transferred into the content |
| 2017 | * Scene. Typical Transitions will affect size and location, such as |
| 2018 | * {@link android.transition.ChangeBounds}. A null |
| 2019 | * value will cause transferred shared elements to blink to the final position. |
| 2020 | * |
| 2021 | * @param transition The Transition to use for shared elements transferred into the content |
| 2022 | * Scene. |
| 2023 | * @attr ref android.R.styleable#Fragment_fragmentSharedElementEnterTransition |
| 2024 | */ |
| 2025 | public void setSharedElementEnterTransition(Transition transition) { |
| 2026 | mSharedElementEnterTransition = transition; |
| 2027 | } |
| 2028 | |
| 2029 | /** |
| 2030 | * Returns the Transition that will be used for shared elements transferred into the content |
| 2031 | * Scene. Typical Transitions will affect size and location, such as |
| 2032 | * {@link android.transition.ChangeBounds}. A null |
| 2033 | * value will cause transferred shared elements to blink to the final position. |
| 2034 | * |
| 2035 | * @return The Transition to use for shared elements transferred into the content |
| 2036 | * Scene. |
| 2037 | * @attr ref android.R.styleable#Fragment_fragmentSharedElementEnterTransition |
| 2038 | */ |
| 2039 | public Transition getSharedElementEnterTransition() { |
| 2040 | return mSharedElementEnterTransition; |
| 2041 | } |
| 2042 | |
| 2043 | /** |
| 2044 | * Sets the Transition that will be used for shared elements transferred back during a |
| 2045 | * pop of the back stack. This Transition acts in the leaving Fragment. |
| 2046 | * Typical Transitions will affect size and location, such as |
| 2047 | * {@link android.transition.ChangeBounds}. A null |
| 2048 | * value will cause transferred shared elements to blink to the final position. |
| 2049 | * If no value is set, the default will be to use the same value as |
| 2050 | * {@link #setSharedElementEnterTransition(android.transition.Transition)}. |
| 2051 | * |
| 2052 | * @param transition The Transition to use for shared elements transferred out of the content |
| 2053 | * Scene. |
| 2054 | * @attr ref android.R.styleable#Fragment_fragmentSharedElementReturnTransition |
| 2055 | */ |
| 2056 | public void setSharedElementReturnTransition(Transition transition) { |
| 2057 | mSharedElementReturnTransition = transition; |
| 2058 | } |
| 2059 | |
| 2060 | /** |
| 2061 | * Return the Transition that will be used for shared elements transferred back during a |
| 2062 | * pop of the back stack. This Transition acts in the leaving Fragment. |
| 2063 | * Typical Transitions will affect size and location, such as |
| 2064 | * {@link android.transition.ChangeBounds}. A null |
| 2065 | * value will cause transferred shared elements to blink to the final position. |
| 2066 | * If no value is set, the default will be to use the same value as |
| 2067 | * {@link #setSharedElementEnterTransition(android.transition.Transition)}. |
| 2068 | * |
| 2069 | * @return The Transition to use for shared elements transferred out of the content |
| 2070 | * Scene. |
| 2071 | * @attr ref android.R.styleable#Fragment_fragmentSharedElementReturnTransition |
| 2072 | */ |
| 2073 | public Transition getSharedElementReturnTransition() { |
| 2074 | return mSharedElementReturnTransition == USE_DEFAULT_TRANSITION ? |
| 2075 | getSharedElementEnterTransition() : mSharedElementReturnTransition; |
| 2076 | } |
| 2077 | |
| 2078 | /** |
| 2079 | * Sets whether the the exit transition and enter transition overlap or not. |
| 2080 | * When true, the enter transition will start as soon as possible. When false, the |
| 2081 | * enter transition will wait until the exit transition completes before starting. |
| 2082 | * |
| 2083 | * @param allow true to start the enter transition when possible or false to |
| 2084 | * wait until the exiting transition completes. |
| 2085 | * @attr ref android.R.styleable#Fragment_fragmentAllowEnterTransitionOverlap |
| 2086 | */ |
| 2087 | public void setAllowEnterTransitionOverlap(boolean allow) { |
| 2088 | mAllowEnterTransitionOverlap = allow; |
| 2089 | } |
| 2090 | |
| 2091 | /** |
| 2092 | * Returns whether the the exit transition and enter transition overlap or not. |
| 2093 | * When true, the enter transition will start as soon as possible. When false, the |
| 2094 | * enter transition will wait until the exit transition completes before starting. |
| 2095 | * |
| 2096 | * @return true when the enter transition should start as soon as possible or false to |
| 2097 | * when it should wait until the exiting transition completes. |
| 2098 | * @attr ref android.R.styleable#Fragment_fragmentAllowEnterTransitionOverlap |
| 2099 | */ |
| 2100 | public boolean getAllowEnterTransitionOverlap() { |
| 2101 | return (mAllowEnterTransitionOverlap == null) ? true : mAllowEnterTransitionOverlap; |
| 2102 | } |
| 2103 | |
| 2104 | /** |
| 2105 | * Sets whether the the return transition and reenter transition overlap or not. |
| 2106 | * When true, the reenter transition will start as soon as possible. When false, the |
| 2107 | * reenter transition will wait until the return transition completes before starting. |
| 2108 | * |
| 2109 | * @param allow true to start the reenter transition when possible or false to wait until the |
| 2110 | * return transition completes. |
| 2111 | * @attr ref android.R.styleable#Fragment_fragmentAllowReturnTransitionOverlap |
| 2112 | */ |
| 2113 | public void setAllowReturnTransitionOverlap(boolean allow) { |
| 2114 | mAllowReturnTransitionOverlap = allow; |
| 2115 | } |
| 2116 | |
| 2117 | /** |
| 2118 | * Returns whether the the return transition and reenter transition overlap or not. |
| 2119 | * When true, the reenter transition will start as soon as possible. When false, the |
| 2120 | * reenter transition will wait until the return transition completes before starting. |
| 2121 | * |
| 2122 | * @return true to start the reenter transition when possible or false to wait until the |
| 2123 | * return transition completes. |
| 2124 | * @attr ref android.R.styleable#Fragment_fragmentAllowReturnTransitionOverlap |
| 2125 | */ |
| 2126 | public boolean getAllowReturnTransitionOverlap() { |
| 2127 | return (mAllowReturnTransitionOverlap == null) ? true : mAllowReturnTransitionOverlap; |
| 2128 | } |
| 2129 | |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2130 | /** |
| 2131 | * Print the Fragments's state into the given stream. |
| 2132 | * |
| 2133 | * @param prefix Text to print at the front of each line. |
| 2134 | * @param fd The raw file descriptor that the dump is being sent to. |
| 2135 | * @param writer The PrintWriter to which you should dump your state. This will be |
| 2136 | * closed for you after you return. |
| 2137 | * @param args additional arguments to the dump request. |
| 2138 | */ |
| 2139 | public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { |
Dianne Hackborn | 30d7189 | 2010-12-11 10:37:55 -0800 | [diff] [blame] | 2140 | writer.print(prefix); writer.print("mFragmentId=#"); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2141 | writer.print(Integer.toHexString(mFragmentId)); |
| 2142 | writer.print(" mContainerId=#"); |
| 2143 | writer.print(Integer.toHexString(mContainerId)); |
| 2144 | writer.print(" mTag="); writer.println(mTag); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2145 | writer.print(prefix); writer.print("mState="); writer.print(mState); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2146 | writer.print(" mIndex="); writer.print(mIndex); |
| 2147 | writer.print(" mWho="); writer.print(mWho); |
| 2148 | writer.print(" mBackStackNesting="); writer.println(mBackStackNesting); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2149 | writer.print(prefix); writer.print("mAdded="); writer.print(mAdded); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2150 | writer.print(" mRemoving="); writer.print(mRemoving); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2151 | writer.print(" mFromLayout="); writer.print(mFromLayout); |
| 2152 | writer.print(" mInLayout="); writer.println(mInLayout); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2153 | writer.print(prefix); writer.print("mHidden="); writer.print(mHidden); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2154 | writer.print(" mDetached="); writer.print(mDetached); |
| 2155 | writer.print(" mMenuVisible="); writer.print(mMenuVisible); |
| 2156 | writer.print(" mHasMenu="); writer.println(mHasMenu); |
Dianne Hackborn | 6c28597 | 2011-08-29 16:53:49 -0700 | [diff] [blame] | 2157 | writer.print(prefix); writer.print("mRetainInstance="); writer.print(mRetainInstance); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2158 | writer.print(" mRetaining="); writer.print(mRetaining); |
| 2159 | writer.print(" mUserVisibleHint="); writer.println(mUserVisibleHint); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2160 | if (mFragmentManager != null) { |
| 2161 | writer.print(prefix); writer.print("mFragmentManager="); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2162 | writer.println(mFragmentManager); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2163 | } |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2164 | if (mHost != null) { |
| 2165 | writer.print(prefix); writer.print("mHost="); |
| 2166 | writer.println(mHost); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2167 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2168 | if (mParentFragment != null) { |
| 2169 | writer.print(prefix); writer.print("mParentFragment="); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2170 | writer.println(mParentFragment); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2171 | } |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2172 | if (mArguments != null) { |
| 2173 | writer.print(prefix); writer.print("mArguments="); writer.println(mArguments); |
| 2174 | } |
| 2175 | if (mSavedFragmentState != null) { |
| 2176 | writer.print(prefix); writer.print("mSavedFragmentState="); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2177 | writer.println(mSavedFragmentState); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2178 | } |
| 2179 | if (mSavedViewState != null) { |
| 2180 | writer.print(prefix); writer.print("mSavedViewState="); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2181 | writer.println(mSavedViewState); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2182 | } |
| 2183 | if (mTarget != null) { |
| 2184 | writer.print(prefix); writer.print("mTarget="); writer.print(mTarget); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2185 | writer.print(" mTargetRequestCode="); |
| 2186 | writer.println(mTargetRequestCode); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2187 | } |
| 2188 | if (mNextAnim != 0) { |
| 2189 | writer.print(prefix); writer.print("mNextAnim="); writer.println(mNextAnim); |
| 2190 | } |
| 2191 | if (mContainer != null) { |
| 2192 | writer.print(prefix); writer.print("mContainer="); writer.println(mContainer); |
| 2193 | } |
| 2194 | if (mView != null) { |
| 2195 | writer.print(prefix); writer.print("mView="); writer.println(mView); |
| 2196 | } |
Dianne Hackborn | d173fa3 | 2010-12-23 13:58:22 -0800 | [diff] [blame] | 2197 | if (mAnimatingAway != null) { |
| 2198 | writer.print(prefix); writer.print("mAnimatingAway="); writer.println(mAnimatingAway); |
| 2199 | writer.print(prefix); writer.print("mStateAfterAnimating="); |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2200 | writer.println(mStateAfterAnimating); |
Dianne Hackborn | d173fa3 | 2010-12-23 13:58:22 -0800 | [diff] [blame] | 2201 | } |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2202 | if (mLoaderManager != null) { |
Dianne Hackborn | 30d7189 | 2010-12-11 10:37:55 -0800 | [diff] [blame] | 2203 | writer.print(prefix); writer.println("Loader Manager:"); |
| 2204 | mLoaderManager.dump(prefix + " ", fd, writer, args); |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2205 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2206 | if (mChildFragmentManager != null) { |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 2207 | writer.print(prefix); writer.println("Child " + mChildFragmentManager + ":"); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2208 | mChildFragmentManager.dump(prefix + " ", fd, writer, args); |
| 2209 | } |
| 2210 | } |
| 2211 | |
| 2212 | Fragment findFragmentByWho(String who) { |
| 2213 | if (who.equals(mWho)) { |
| 2214 | return this; |
| 2215 | } |
| 2216 | if (mChildFragmentManager != null) { |
| 2217 | return mChildFragmentManager.findFragmentByWho(who); |
| 2218 | } |
| 2219 | return null; |
| 2220 | } |
| 2221 | |
| 2222 | void instantiateChildFragmentManager() { |
| 2223 | mChildFragmentManager = new FragmentManagerImpl(); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2224 | mChildFragmentManager.attachController(mHost, new FragmentContainer() { |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2225 | @Override |
Scott Kennedy | c051955 | 2015-02-11 15:33:10 -0800 | [diff] [blame] | 2226 | @Nullable |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2227 | public View onFindViewById(int id) { |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2228 | if (mView == null) { |
| 2229 | throw new IllegalStateException("Fragment does not have a view"); |
| 2230 | } |
| 2231 | return mView.findViewById(id); |
| 2232 | } |
George Mount | 0b26e4d | 2014-09-17 16:36:42 -0700 | [diff] [blame] | 2233 | |
| 2234 | @Override |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2235 | public boolean onHasView() { |
George Mount | 0b26e4d | 2014-09-17 16:36:42 -0700 | [diff] [blame] | 2236 | return (mView != null); |
| 2237 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2238 | }, this); |
| 2239 | } |
| 2240 | |
| 2241 | void performCreate(Bundle savedInstanceState) { |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 2242 | if (mChildFragmentManager != null) { |
| 2243 | mChildFragmentManager.noteStateNotSaved(); |
| 2244 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2245 | mState = CREATED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2246 | mCalled = false; |
| 2247 | onCreate(savedInstanceState); |
| 2248 | if (!mCalled) { |
| 2249 | throw new SuperNotCalledException("Fragment " + this |
| 2250 | + " did not call through to super.onCreate()"); |
| 2251 | } |
Adam Powell | 592df7d | 2016-01-14 12:58:23 -0800 | [diff] [blame] | 2252 | final Context context = getContext(); |
| 2253 | final int version = context != null ? context.getApplicationInfo().targetSdkVersion : 0; |
| 2254 | if (version < Build.VERSION_CODES.N) { |
| 2255 | if (savedInstanceState != null) { |
| 2256 | Parcelable p = savedInstanceState.getParcelable(Activity.FRAGMENTS_TAG); |
| 2257 | if (p != null) { |
| 2258 | if (mChildFragmentManager == null) { |
| 2259 | instantiateChildFragmentManager(); |
| 2260 | } |
| 2261 | mChildFragmentManager.restoreAllState(p, null); |
| 2262 | mChildFragmentManager.dispatchCreate(); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2263 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2264 | } |
| 2265 | } |
| 2266 | } |
| 2267 | |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 2268 | View performCreateView(LayoutInflater inflater, ViewGroup container, |
| 2269 | Bundle savedInstanceState) { |
| 2270 | if (mChildFragmentManager != null) { |
| 2271 | mChildFragmentManager.noteStateNotSaved(); |
| 2272 | } |
| 2273 | return onCreateView(inflater, container, savedInstanceState); |
| 2274 | } |
| 2275 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2276 | void performActivityCreated(Bundle savedInstanceState) { |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 2277 | if (mChildFragmentManager != null) { |
| 2278 | mChildFragmentManager.noteStateNotSaved(); |
| 2279 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2280 | mState = ACTIVITY_CREATED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2281 | mCalled = false; |
| 2282 | onActivityCreated(savedInstanceState); |
| 2283 | if (!mCalled) { |
| 2284 | throw new SuperNotCalledException("Fragment " + this |
| 2285 | + " did not call through to super.onActivityCreated()"); |
| 2286 | } |
| 2287 | if (mChildFragmentManager != null) { |
| 2288 | mChildFragmentManager.dispatchActivityCreated(); |
| 2289 | } |
Dianne Hackborn | 625ac27 | 2010-09-17 18:29:22 -0700 | [diff] [blame] | 2290 | } |
| 2291 | |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2292 | void performStart() { |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2293 | if (mChildFragmentManager != null) { |
| 2294 | mChildFragmentManager.noteStateNotSaved(); |
| 2295 | mChildFragmentManager.execPendingActions(); |
| 2296 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2297 | mState = STARTED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2298 | mCalled = false; |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2299 | onStart(); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2300 | if (!mCalled) { |
| 2301 | throw new SuperNotCalledException("Fragment " + this |
| 2302 | + " did not call through to super.onStart()"); |
| 2303 | } |
| 2304 | if (mChildFragmentManager != null) { |
| 2305 | mChildFragmentManager.dispatchStart(); |
| 2306 | } |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2307 | if (mLoaderManager != null) { |
| 2308 | mLoaderManager.doReportStart(); |
| 2309 | } |
| 2310 | } |
| 2311 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2312 | void performResume() { |
| 2313 | if (mChildFragmentManager != null) { |
Dianne Hackborn | 1b8ecc5 | 2012-09-08 17:03:52 -0700 | [diff] [blame] | 2314 | mChildFragmentManager.noteStateNotSaved(); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2315 | mChildFragmentManager.execPendingActions(); |
| 2316 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2317 | mState = RESUMED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2318 | mCalled = false; |
| 2319 | onResume(); |
| 2320 | if (!mCalled) { |
| 2321 | throw new SuperNotCalledException("Fragment " + this |
| 2322 | + " did not call through to super.onResume()"); |
| 2323 | } |
| 2324 | if (mChildFragmentManager != null) { |
| 2325 | mChildFragmentManager.dispatchResume(); |
| 2326 | mChildFragmentManager.execPendingActions(); |
| 2327 | } |
| 2328 | } |
| 2329 | |
Wale Ogunwale | 7c79681 | 2016-01-29 21:13:50 -0800 | [diff] [blame] | 2330 | void performMultiWindowChanged(boolean inMultiWindow) { |
| 2331 | onMultiWindowChanged(inMultiWindow); |
| 2332 | if (mChildFragmentManager != null) { |
| 2333 | mChildFragmentManager.dispatchMultiWindowChanged(inMultiWindow); |
| 2334 | } |
| 2335 | } |
| 2336 | |
| 2337 | void performPictureInPictureChanged(boolean inPictureInPicture) { |
| 2338 | onPictureInPictureChanged(inPictureInPicture); |
| 2339 | if (mChildFragmentManager != null) { |
| 2340 | mChildFragmentManager.dispatchPictureInPictureChanged(inPictureInPicture); |
| 2341 | } |
| 2342 | } |
| 2343 | |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2344 | void performConfigurationChanged(Configuration newConfig) { |
| 2345 | onConfigurationChanged(newConfig); |
| 2346 | if (mChildFragmentManager != null) { |
| 2347 | mChildFragmentManager.dispatchConfigurationChanged(newConfig); |
| 2348 | } |
| 2349 | } |
| 2350 | |
| 2351 | void performLowMemory() { |
| 2352 | onLowMemory(); |
| 2353 | if (mChildFragmentManager != null) { |
| 2354 | mChildFragmentManager.dispatchLowMemory(); |
| 2355 | } |
| 2356 | } |
| 2357 | |
| 2358 | void performTrimMemory(int level) { |
| 2359 | onTrimMemory(level); |
| 2360 | if (mChildFragmentManager != null) { |
| 2361 | mChildFragmentManager.dispatchTrimMemory(level); |
| 2362 | } |
| 2363 | } |
| 2364 | |
| 2365 | boolean performCreateOptionsMenu(Menu menu, MenuInflater inflater) { |
| 2366 | boolean show = false; |
| 2367 | if (!mHidden) { |
| 2368 | if (mHasMenu && mMenuVisible) { |
| 2369 | show = true; |
| 2370 | onCreateOptionsMenu(menu, inflater); |
| 2371 | } |
| 2372 | if (mChildFragmentManager != null) { |
| 2373 | show |= mChildFragmentManager.dispatchCreateOptionsMenu(menu, inflater); |
| 2374 | } |
| 2375 | } |
| 2376 | return show; |
| 2377 | } |
| 2378 | |
| 2379 | boolean performPrepareOptionsMenu(Menu menu) { |
| 2380 | boolean show = false; |
| 2381 | if (!mHidden) { |
| 2382 | if (mHasMenu && mMenuVisible) { |
| 2383 | show = true; |
| 2384 | onPrepareOptionsMenu(menu); |
| 2385 | } |
| 2386 | if (mChildFragmentManager != null) { |
| 2387 | show |= mChildFragmentManager.dispatchPrepareOptionsMenu(menu); |
| 2388 | } |
| 2389 | } |
| 2390 | return show; |
| 2391 | } |
| 2392 | |
| 2393 | boolean performOptionsItemSelected(MenuItem item) { |
| 2394 | if (!mHidden) { |
| 2395 | if (mHasMenu && mMenuVisible) { |
| 2396 | if (onOptionsItemSelected(item)) { |
| 2397 | return true; |
| 2398 | } |
| 2399 | } |
| 2400 | if (mChildFragmentManager != null) { |
| 2401 | if (mChildFragmentManager.dispatchOptionsItemSelected(item)) { |
| 2402 | return true; |
| 2403 | } |
| 2404 | } |
| 2405 | } |
| 2406 | return false; |
| 2407 | } |
| 2408 | |
| 2409 | boolean performContextItemSelected(MenuItem item) { |
| 2410 | if (!mHidden) { |
| 2411 | if (onContextItemSelected(item)) { |
| 2412 | return true; |
| 2413 | } |
| 2414 | if (mChildFragmentManager != null) { |
| 2415 | if (mChildFragmentManager.dispatchContextItemSelected(item)) { |
| 2416 | return true; |
| 2417 | } |
| 2418 | } |
| 2419 | } |
| 2420 | return false; |
| 2421 | } |
| 2422 | |
| 2423 | void performOptionsMenuClosed(Menu menu) { |
| 2424 | if (!mHidden) { |
| 2425 | if (mHasMenu && mMenuVisible) { |
| 2426 | onOptionsMenuClosed(menu); |
| 2427 | } |
| 2428 | if (mChildFragmentManager != null) { |
| 2429 | mChildFragmentManager.dispatchOptionsMenuClosed(menu); |
| 2430 | } |
| 2431 | } |
| 2432 | } |
| 2433 | |
| 2434 | void performSaveInstanceState(Bundle outState) { |
| 2435 | onSaveInstanceState(outState); |
| 2436 | if (mChildFragmentManager != null) { |
| 2437 | Parcelable p = mChildFragmentManager.saveAllState(); |
| 2438 | if (p != null) { |
| 2439 | outState.putParcelable(Activity.FRAGMENTS_TAG, p); |
| 2440 | } |
| 2441 | } |
| 2442 | } |
| 2443 | |
| 2444 | void performPause() { |
| 2445 | if (mChildFragmentManager != null) { |
| 2446 | mChildFragmentManager.dispatchPause(); |
| 2447 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2448 | mState = STARTED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2449 | mCalled = false; |
| 2450 | onPause(); |
| 2451 | if (!mCalled) { |
| 2452 | throw new SuperNotCalledException("Fragment " + this |
| 2453 | + " did not call through to super.onPause()"); |
| 2454 | } |
| 2455 | } |
| 2456 | |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 2457 | void performStop() { |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2458 | if (mChildFragmentManager != null) { |
| 2459 | mChildFragmentManager.dispatchStop(); |
| 2460 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2461 | mState = STOPPED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2462 | mCalled = false; |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 2463 | onStop(); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2464 | if (!mCalled) { |
| 2465 | throw new SuperNotCalledException("Fragment " + this |
| 2466 | + " did not call through to super.onStop()"); |
| 2467 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2468 | |
Dianne Hackborn | fb3cffe | 2010-10-25 17:08:56 -0700 | [diff] [blame] | 2469 | if (mLoadersStarted) { |
| 2470 | mLoadersStarted = false; |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 2471 | if (!mCheckedForLoaderManager) { |
| 2472 | mCheckedForLoaderManager = true; |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2473 | mLoaderManager = mHost.getLoaderManager(mWho, mLoadersStarted, false); |
Dianne Hackborn | 5e0d595 | 2010-08-05 13:45:35 -0700 | [diff] [blame] | 2474 | } |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 2475 | if (mLoaderManager != null) { |
Todd Kennedy | 2ee19c7f | 2015-10-19 15:31:51 -0700 | [diff] [blame] | 2476 | if (mHost.getRetainLoaders()) { |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 2477 | mLoaderManager.doRetain(); |
Todd Kennedy | a5fc6f0 | 2015-04-14 18:22:54 -0700 | [diff] [blame] | 2478 | } else { |
| 2479 | mLoaderManager.doStop(); |
Dianne Hackborn | 2707d60 | 2010-07-09 18:01:20 -0700 | [diff] [blame] | 2480 | } |
| 2481 | } |
| 2482 | } |
| 2483 | } |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2484 | |
| 2485 | void performDestroyView() { |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2486 | if (mChildFragmentManager != null) { |
| 2487 | mChildFragmentManager.dispatchDestroyView(); |
| 2488 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2489 | mState = CREATED; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2490 | mCalled = false; |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2491 | onDestroyView(); |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2492 | if (!mCalled) { |
| 2493 | throw new SuperNotCalledException("Fragment " + this |
| 2494 | + " did not call through to super.onDestroyView()"); |
| 2495 | } |
Dianne Hackborn | afc4b28 | 2011-06-10 17:03:42 -0700 | [diff] [blame] | 2496 | if (mLoaderManager != null) { |
| 2497 | mLoaderManager.doReportNextStart(); |
| 2498 | } |
| 2499 | } |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2500 | |
| 2501 | void performDestroy() { |
| 2502 | if (mChildFragmentManager != null) { |
| 2503 | mChildFragmentManager.dispatchDestroy(); |
| 2504 | } |
Adam Powell | d1d4d9c | 2016-01-12 10:11:42 -0800 | [diff] [blame] | 2505 | mState = INITIALIZING; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2506 | mCalled = false; |
| 2507 | onDestroy(); |
| 2508 | if (!mCalled) { |
| 2509 | throw new SuperNotCalledException("Fragment " + this |
| 2510 | + " did not call through to super.onDestroy()"); |
| 2511 | } |
George Mount | 4c656b3 | 2016-02-17 12:59:49 -0800 | [diff] [blame] | 2512 | mChildFragmentManager = null; |
Dianne Hackborn | 62bea2f | 2012-09-04 18:48:15 -0700 | [diff] [blame] | 2513 | } |
George Mount | c03da0e | 2014-08-22 17:04:02 -0700 | [diff] [blame] | 2514 | |
| 2515 | private static Transition loadTransition(Context context, TypedArray typedArray, |
| 2516 | Transition currentValue, Transition defaultValue, int id) { |
| 2517 | if (currentValue != defaultValue) { |
| 2518 | return currentValue; |
| 2519 | } |
| 2520 | int transitionId = typedArray.getResourceId(id, 0); |
| 2521 | Transition transition = defaultValue; |
| 2522 | if (transitionId != 0 && transitionId != com.android.internal.R.transition.no_transition) { |
| 2523 | TransitionInflater inflater = TransitionInflater.from(context); |
| 2524 | transition = inflater.inflateTransition(transitionId); |
| 2525 | if (transition instanceof TransitionSet && |
| 2526 | ((TransitionSet)transition).getTransitionCount() == 0) { |
| 2527 | transition = null; |
| 2528 | } |
| 2529 | } |
| 2530 | return transition; |
| 2531 | } |
| 2532 | |
Dianne Hackborn | 2dedce6 | 2010-04-15 14:45:25 -0700 | [diff] [blame] | 2533 | } |