| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.app; |
| |
| import android.content.ComponentCallbacks; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Configuration; |
| import android.os.Bundle; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.AttributeSet; |
| import android.util.SparseArray; |
| import android.view.ContextMenu; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuInflater; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.ContextMenu.ContextMenuInfo; |
| import android.view.View.OnCreateContextMenuListener; |
| import android.view.animation.Animation; |
| import android.widget.AdapterView; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.HashMap; |
| |
| final class FragmentState implements Parcelable { |
| static final String VIEW_STATE_TAG = "android:view_state"; |
| |
| final String mClassName; |
| final int mIndex; |
| final boolean mFromLayout; |
| final int mFragmentId; |
| final int mContainerId; |
| final String mTag; |
| final boolean mRetainInstance; |
| |
| Bundle mSavedFragmentState; |
| |
| Fragment mInstance; |
| |
| public FragmentState(Fragment frag) { |
| mClassName = frag.getClass().getName(); |
| mIndex = frag.mIndex; |
| mFromLayout = frag.mFromLayout; |
| mFragmentId = frag.mFragmentId; |
| mContainerId = frag.mContainerId; |
| mTag = frag.mTag; |
| mRetainInstance = frag.mRetainInstance; |
| } |
| |
| public FragmentState(Parcel in) { |
| mClassName = in.readString(); |
| mIndex = in.readInt(); |
| mFromLayout = in.readInt() != 0; |
| mFragmentId = in.readInt(); |
| mContainerId = in.readInt(); |
| mTag = in.readString(); |
| mRetainInstance = in.readInt() != 0; |
| mSavedFragmentState = in.readBundle(); |
| } |
| |
| public Fragment instantiate(Activity activity) { |
| if (mInstance != null) { |
| return mInstance; |
| } |
| |
| try { |
| mInstance = Fragment.instantiate(activity, mClassName); |
| } catch (Exception e) { |
| throw new RuntimeException("Unable to restore fragment " + mClassName, e); |
| } |
| |
| if (mSavedFragmentState != null) { |
| mSavedFragmentState.setClassLoader(activity.getClassLoader()); |
| mInstance.mSavedFragmentState = mSavedFragmentState; |
| mInstance.mSavedViewState |
| = mSavedFragmentState.getSparseParcelableArray(VIEW_STATE_TAG); |
| } |
| mInstance.setIndex(mIndex); |
| mInstance.mFromLayout = mFromLayout; |
| mInstance.mFragmentId = mFragmentId; |
| mInstance.mContainerId = mContainerId; |
| mInstance.mTag = mTag; |
| mInstance.mRetainInstance = mRetainInstance; |
| |
| return mInstance; |
| } |
| |
| public int describeContents() { |
| return 0; |
| } |
| |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeString(mClassName); |
| dest.writeInt(mIndex); |
| dest.writeInt(mFromLayout ? 1 : 0); |
| dest.writeInt(mFragmentId); |
| dest.writeInt(mContainerId); |
| dest.writeString(mTag); |
| dest.writeInt(mRetainInstance ? 1 : 0); |
| dest.writeBundle(mSavedFragmentState); |
| } |
| |
| public static final Parcelable.Creator<FragmentState> CREATOR |
| = new Parcelable.Creator<FragmentState>() { |
| public FragmentState createFromParcel(Parcel in) { |
| return new FragmentState(in); |
| } |
| |
| public FragmentState[] newArray(int size) { |
| return new FragmentState[size]; |
| } |
| }; |
| } |
| |
| /** |
| * A Fragment is a piece of an application's user interface or behavior |
| * that can be placed in an {@link Activity}. |
| */ |
| public class Fragment implements ComponentCallbacks, OnCreateContextMenuListener { |
| private static final HashMap<String, Class<?>> sClassMap = |
| new HashMap<String, Class<?>>(); |
| |
| static final int INITIALIZING = 0; // Not yet created. |
| static final int CREATED = 1; // Created. |
| static final int ACTIVITY_CREATED = 2; // The activity has finished its creation. |
| static final int STARTED = 3; // Created and started, not resumed. |
| static final int RESUMED = 4; // Created started and resumed. |
| |
| int mState = INITIALIZING; |
| |
| // When instantiated from saved state, this is the saved state. |
| Bundle mSavedFragmentState; |
| SparseArray<Parcelable> mSavedViewState; |
| |
| // Index into active fragment array. |
| int mIndex = -1; |
| |
| // Internal unique name for this fragment; |
| String mWho; |
| |
| // True if the fragment is in the list of added fragments. |
| boolean mAdded; |
| |
| // True if the fragment is in the resumed state. |
| boolean mResumed; |
| |
| // Set to true if this fragment was instantiated from a layout file. |
| boolean mFromLayout; |
| |
| // Number of active back stack entries this fragment is in. |
| int mBackStackNesting; |
| |
| // Set as soon as a fragment is added to a transaction (or removed), |
| // to be able to do validation. |
| Activity mImmediateActivity; |
| |
| // Activity this fragment is attached to. |
| Activity mActivity; |
| |
| // The optional identifier for this fragment -- either the container ID if it |
| // was dynamically added to the view hierarchy, or the ID supplied in |
| // layout. |
| int mFragmentId; |
| |
| // When a fragment is being dynamically added to the view hierarchy, this |
| // is the identifier of the parent container it is being added to. |
| int mContainerId; |
| |
| // The optional named tag for this fragment -- usually used to find |
| // fragments that are not part of the layout. |
| String mTag; |
| |
| // Set to true when the app has requested that this fragment be hidden |
| // from the user. |
| boolean mHidden; |
| |
| // If set this fragment would like its instance retained across |
| // configuration changes. |
| boolean mRetainInstance; |
| |
| // If set this fragment is being retained across the current config change. |
| boolean mRetaining; |
| |
| // If set this fragment has menu items to contribute. |
| boolean mHasMenu; |
| |
| // Used to verify that subclasses call through to super class. |
| boolean mCalled; |
| |
| // If app has requested a specific animation, this is the one to use. |
| int mNextAnim; |
| |
| // The parent container of the fragment after dynamically added to UI. |
| ViewGroup mContainer; |
| |
| // The View generated for this fragment. |
| View mView; |
| |
| LoaderManagerImpl mLoaderManager; |
| boolean mStarted; |
| |
| /** |
| * Default constructor. <strong>Every</string> fragment must have an |
| * empty constructor, so it can be instantiated when restoring its |
| * activity's state. It is strongly recommended that subclasses do not |
| * have other constructors with parameters, since these constructors |
| * will not be called when the fragment is re-instantiated; instead, |
| * retrieve such parameters from the activity in {@link #onAttach(Activity)}. |
| */ |
| public Fragment() { |
| } |
| |
| /** |
| * Create a new instance of a Fragment with the given class name. This is |
| * the same as calling its empty constructor. |
| * |
| * @param context The calling context being used to instantiate the fragment. |
| * This is currently just used to get its ClassLoader. |
| * @param fname The class name of the fragment to instantiate. |
| * @return Returns a new fragment instance. |
| * @throws NoSuchMethodException The fragment does not have an empty constructor. |
| * @throws ClassNotFoundException The fragment class does not exist. |
| * @throws IllegalArgumentException Bad arguments supplied to fragment class |
| * constructor (should not happen). |
| * @throws InstantiationException Caller does not have permission to instantiate |
| * the fragment (for example its constructor is not public). |
| * @throws IllegalAccessException Caller does not have permission to access |
| * the given fragment class. |
| * @throws InvocationTargetException Failure running the fragment's constructor. |
| */ |
| public static Fragment instantiate(Context context, String fname) |
| throws NoSuchMethodException, ClassNotFoundException, |
| IllegalArgumentException, InstantiationException, |
| IllegalAccessException, InvocationTargetException { |
| Class<?> clazz = sClassMap.get(fname); |
| |
| if (clazz == null) { |
| // Class not found in the cache, see if it's real, and try to add it |
| clazz = context.getClassLoader().loadClass(fname); |
| sClassMap.put(fname, clazz); |
| } |
| return (Fragment)clazz.newInstance(); |
| } |
| |
| void restoreViewState() { |
| if (mSavedViewState != null) { |
| mView.restoreHierarchyState(mSavedViewState); |
| mSavedViewState = null; |
| } |
| } |
| |
| void setIndex(int index) { |
| mIndex = index; |
| mWho = "android:fragment:" + mIndex; |
| } |
| |
| void clearIndex() { |
| mIndex = -1; |
| mWho = null; |
| } |
| |
| /** |
| * Subclasses can not override equals(). |
| */ |
| @Override final public boolean equals(Object o) { |
| return super.equals(o); |
| } |
| |
| /** |
| * Subclasses can not override hashCode(). |
| */ |
| @Override final public int hashCode() { |
| return super.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(128); |
| sb.append("Fragment{"); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| if (mIndex >= 0) { |
| sb.append(" #"); |
| sb.append(mIndex); |
| } |
| if (mFragmentId != 0) { |
| sb.append(" id=0x"); |
| sb.append(Integer.toHexString(mFragmentId)); |
| } |
| if (mTag != null) { |
| sb.append(" "); |
| sb.append(mTag); |
| } |
| sb.append('}'); |
| return sb.toString(); |
| } |
| |
| /** |
| * Return the identifier this fragment is known by. This is either |
| * the android:id value supplied in a layout or the container view ID |
| * supplied when adding the fragment. |
| */ |
| final public int getId() { |
| return mFragmentId; |
| } |
| |
| /** |
| * Get the tag name of the fragment, if specified. |
| */ |
| final public String getTag() { |
| return mTag; |
| } |
| |
| /** |
| * Return the Activity this fragment is currently associated with. |
| */ |
| final public Activity getActivity() { |
| return mActivity; |
| } |
| |
| /** |
| * Return true if the fragment is currently added to its activity. |
| */ |
| final public boolean isAdded() { |
| return mActivity != null && mActivity.mFragments.mAdded.contains(this); |
| } |
| |
| /** |
| * Return true if the fragment is in the resumed state. This is true |
| * for the duration of {@link #onResume()} and {@link #onPause()} as well. |
| */ |
| final public boolean isResumed() { |
| return mResumed; |
| } |
| |
| /** |
| * Return true if the fragment is currently visible to the user. This means |
| * it: (1) has been added, (2) has its view attached to the window, and |
| * (3) is not hidden. |
| */ |
| final public boolean isVisible() { |
| return isAdded() && !isHidden() && mView != null |
| && mView.getWindowToken() != null && mView.getVisibility() == View.VISIBLE; |
| } |
| |
| /** |
| * Return true if the fragment has been hidden. By default fragments |
| * are shown. You can find out about changes to this state with |
| * {@link #onHiddenChanged}. Note that the hidden state is orthogonal |
| * to other states -- that is, to be visible to the user, a fragment |
| * must be both started and not hidden. |
| */ |
| final public boolean isHidden() { |
| return mHidden; |
| } |
| |
| /** |
| * Called when the hidden state (as returned by {@link #isHidden()} of |
| * the fragment has changed. Fragments start out not hidden; this will |
| * be called whenever the fragment changes state from that. |
| * @param hidden True if the fragment is now hidden, false if it is not |
| * visible. |
| */ |
| public void onHiddenChanged(boolean hidden) { |
| } |
| |
| /** |
| * Control whether a fragment instance is retained across Activity |
| * re-creation (such as from a configuration change). This can only |
| * be used with fragments not in the back stack. If set, the fragment |
| * lifecycle will be slightly different when an activity is recreated: |
| * <ul> |
| * <li> {@link #onDestroy()} will not be called (but {@link #onDetach()} still |
| * will be, because the fragment is being detached from its current activity). |
| * <li> {@link #onCreate(Bundle)} will not be called since the fragment |
| * is not being re-created. |
| * <li> {@link #onAttach(Activity)} and {@link #onActivityCreated(Bundle)} <b>will</b> |
| * still be called. |
| * </ul> |
| */ |
| public void setRetainInstance(boolean retain) { |
| mRetainInstance = retain; |
| } |
| |
| final public boolean getRetainInstance() { |
| return mRetainInstance; |
| } |
| |
| /** |
| * Report that this fragment would like to participate in populating |
| * the options menu by receiving a call to {@link #onCreateOptionsMenu} |
| * and related methods. |
| * |
| * @param hasMenu If true, the fragment has menu items to contribute. |
| */ |
| public void setHasOptionsMenu(boolean hasMenu) { |
| if (mHasMenu != hasMenu) { |
| mHasMenu = hasMenu; |
| if (isAdded() && !isHidden()) { |
| mActivity.invalidateOptionsMenu(); |
| } |
| } |
| } |
| |
| /** |
| * Return the LoaderManager for this fragment, creating it if needed. |
| */ |
| public LoaderManager getLoaderManager() { |
| if (mLoaderManager != null) { |
| return mLoaderManager; |
| } |
| mLoaderManager = mActivity.getLoaderManager(mIndex, mStarted); |
| return mLoaderManager; |
| } |
| |
| /** |
| * Call {@link Activity#startActivity(Intent)} on the fragment's |
| * containing Activity. |
| */ |
| public void startActivity(Intent intent) { |
| mActivity.startActivityFromFragment(this, intent, -1); |
| } |
| |
| /** |
| * Call {@link Activity#startActivityForResult(Intent, int)} on the fragment's |
| * containing Activity. |
| */ |
| public void startActivityForResult(Intent intent, int requestCode) { |
| mActivity.startActivityFromFragment(this, intent, requestCode); |
| } |
| |
| /** |
| * Receive the result from a previous call to |
| * {@link #startActivityForResult(Intent, int)}. This follows the |
| * related Activity API as described there in |
| * {@link Activity#onActivityResult(int, int, Intent)}. |
| * |
| * @param requestCode The integer request code originally supplied to |
| * startActivityForResult(), allowing you to identify who this |
| * result came from. |
| * @param resultCode The integer result code returned by the child activity |
| * through its setResult(). |
| * @param data An Intent, which can return result data to the caller |
| * (various data can be attached to Intent "extras"). |
| */ |
| public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| } |
| |
| /** |
| * Called when a fragment is being created as part of a view layout |
| * inflation, typically from setting the content view of an activity. This |
| * will be called both the first time the fragment is created, as well |
| * later when it is being re-created from its saved state (which is also |
| * given here). |
| * |
| * XXX This is kind-of yucky... maybe we could just supply the |
| * AttributeSet to onCreate()? |
| * |
| * @param activity The Activity that is inflating the fragment. |
| * @param attrs The attributes at the tag where the fragment is |
| * being created. |
| * @param savedInstanceState If the fragment is being re-created from |
| * a previous saved state, this is the state. |
| */ |
| public void onInflate(Activity activity, AttributeSet attrs, |
| Bundle savedInstanceState) { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when a fragment is first attached to its activity. |
| * {@link #onCreate(Bundle)} will be called after this. |
| */ |
| public void onAttach(Activity activity) { |
| mCalled = true; |
| } |
| |
| public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) { |
| return null; |
| } |
| |
| /** |
| * Called to do initial creation of a fragment. This is called after |
| * {@link #onAttach(Activity)} and before |
| * {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)}. |
| * |
| * <p>Note that this can be called while the fragment's activity is |
| * still in the process of being created. As such, you can not rely |
| * on things like the activity's content view hierarchy being initialized |
| * at this point. If you want to do work once the activity itself is |
| * created, see {@link #onActivityCreated(Bundle)}. |
| * |
| * @param savedInstanceState If the fragment is being re-created from |
| * a previous saved state, this is the state. |
| */ |
| public void onCreate(Bundle savedInstanceState) { |
| mCalled = true; |
| } |
| |
| /** |
| * Called to have the fragment instantiate its user interface view. |
| * This is optional, and non-graphical fragments can return null (which |
| * is the default implementation). This will be called between |
| * {@link #onCreate(Bundle)} and {@link #onActivityCreated(Bundle)}. |
| * |
| * <p>If you return a View from here, you will later be called in |
| * {@link #onDestroyView} when the view is being released. |
| * |
| * @param inflater The LayoutInflater object that can be used to inflate |
| * any views in the fragment, |
| * @param container If non-null, this is the parent view that the fragment's |
| * UI should be attached to. The fragment should not add the view itself, |
| * but this can be used to generate the LayoutParams of the view. |
| * @param savedInstanceState If non-null, this fragment is being re-constructed |
| * from a previous saved state as given here. |
| * |
| * @return Return the View for the fragment's UI, or null. |
| */ |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| return null; |
| } |
| |
| public View getView() { |
| return mView; |
| } |
| |
| /** |
| * Called when the fragment's activity has been created and this |
| * fragment's view hierarchy instantiated. It can be used to do final |
| * initialization once these pieces are in place, such as retrieving |
| * views or restoring state. It is also useful for fragments that use |
| * {@link #setRetainInstance(boolean)} to retain their instance, |
| * as this callback tells the fragment when it is fully associated with |
| * the new activity instance. This is called after {@link #onCreateView} |
| * and before {@link #onStart()}. |
| * |
| * @param savedInstanceState If the fragment is being re-created from |
| * a previous saved state, this is the state. |
| */ |
| public void onActivityCreated(Bundle savedInstanceState) { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when the Fragment is visible to the user. This is generally |
| * tied to {@link Activity#onStart() Activity.onStart} of the containing |
| * Activity's lifecycle. |
| */ |
| public void onStart() { |
| mCalled = true; |
| mStarted = true; |
| if (mLoaderManager != null) { |
| mLoaderManager.doStart(); |
| } |
| } |
| |
| /** |
| * Called when the fragment is visible to the user and actively running. |
| * This is generally |
| * tied to {@link Activity#onResume() Activity.onResume} of the containing |
| * Activity's lifecycle. |
| */ |
| public void onResume() { |
| mCalled = true; |
| } |
| |
| public void onSaveInstanceState(Bundle outState) { |
| } |
| |
| public void onConfigurationChanged(Configuration newConfig) { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when the Fragment is no longer resumed. This is generally |
| * tied to {@link Activity#onPause() Activity.onPause} of the containing |
| * Activity's lifecycle. |
| */ |
| public void onPause() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when the Fragment is no longer started. This is generally |
| * tied to {@link Activity#onStop() Activity.onStop} of the containing |
| * Activity's lifecycle. |
| */ |
| public void onStop() { |
| mCalled = true; |
| } |
| |
| public void onLowMemory() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when the view previously created by {@link #onCreateView} has |
| * been detached from the fragment. The next time the fragment needs |
| * to be displayed, a new view will be created. This is called |
| * after {@link #onStop()} and before {@link #onDestroy()}; it is only |
| * called if {@link #onCreateView} returns a non-null View. |
| */ |
| public void onDestroyView() { |
| mCalled = true; |
| } |
| |
| /** |
| * Called when the fragment is no longer in use. This is called |
| * after {@link #onStop()} and before {@link #onDetach()}. |
| */ |
| public void onDestroy() { |
| mCalled = true; |
| if (mLoaderManager != null) { |
| mLoaderManager.doDestroy(); |
| } |
| } |
| |
| /** |
| * Called when the fragment is no longer attached to its activity. This |
| * is called after {@link #onDestroy()}. |
| */ |
| public void onDetach() { |
| mCalled = true; |
| } |
| |
| /** |
| * Initialize the contents of the Activity's standard options menu. You |
| * should place your menu items in to <var>menu</var>. For this method |
| * to be called, you must have first called {@link #setHasOptionsMenu}. See |
| * {@link Activity#onCreateOptionsMenu(Menu) Activity.onCreateOptionsMenu} |
| * for more information. |
| * |
| * @param menu The options menu in which you place your items. |
| * |
| * @see #setHasOptionsMenu |
| * @see #onPrepareOptionsMenu |
| * @see #onOptionsItemSelected |
| */ |
| public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { |
| } |
| |
| /** |
| * Prepare the Screen's standard options menu to be displayed. This is |
| * called right before the menu is shown, every time it is shown. You can |
| * use this method to efficiently enable/disable items or otherwise |
| * dynamically modify the contents. See |
| * {@link Activity#onPrepareOptionsMenu(Menu) Activity.onPrepareOptionsMenu} |
| * for more information. |
| * |
| * @param menu The options menu as last shown or first initialized by |
| * onCreateOptionsMenu(). |
| * |
| * @see #setHasOptionsMenu |
| * @see #onCreateOptionsMenu |
| */ |
| public void onPrepareOptionsMenu(Menu menu) { |
| } |
| |
| /** |
| * This hook is called whenever an item in your options menu is selected. |
| * The default implementation simply returns false to have the normal |
| * processing happen (calling the item's Runnable or sending a message to |
| * its Handler as appropriate). You can use this method for any items |
| * for which you would like to do processing without those other |
| * facilities. |
| * |
| * <p>Derived classes should call through to the base class for it to |
| * perform the default menu handling. |
| * |
| * @param item The menu item that was selected. |
| * |
| * @return boolean Return false to allow normal menu processing to |
| * proceed, true to consume it here. |
| * |
| * @see #onCreateOptionsMenu |
| */ |
| public boolean onOptionsItemSelected(MenuItem item) { |
| return false; |
| } |
| |
| /** |
| * This hook is called whenever the options menu is being closed (either by the user canceling |
| * the menu with the back/menu button, or when an item is selected). |
| * |
| * @param menu The options menu as last shown or first initialized by |
| * onCreateOptionsMenu(). |
| */ |
| public void onOptionsMenuClosed(Menu menu) { |
| } |
| |
| /** |
| * Called when a context menu for the {@code view} is about to be shown. |
| * Unlike {@link #onCreateOptionsMenu}, this will be called every |
| * time the context menu is about to be shown and should be populated for |
| * the view (or item inside the view for {@link AdapterView} subclasses, |
| * this can be found in the {@code menuInfo})). |
| * <p> |
| * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an |
| * item has been selected. |
| * <p> |
| * The default implementation calls up to |
| * {@link Activity#onCreateContextMenu Activity.onCreateContextMenu}, though |
| * you can not call this implementation if you don't want that behavior. |
| * <p> |
| * It is not safe to hold onto the context menu after this method returns. |
| * {@inheritDoc} |
| */ |
| public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { |
| getActivity().onCreateContextMenu(menu, v, menuInfo); |
| } |
| |
| /** |
| * Registers a context menu to be shown for the given view (multiple views |
| * can show the context menu). This method will set the |
| * {@link OnCreateContextMenuListener} on the view to this fragment, so |
| * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be |
| * called when it is time to show the context menu. |
| * |
| * @see #unregisterForContextMenu(View) |
| * @param view The view that should show a context menu. |
| */ |
| public void registerForContextMenu(View view) { |
| view.setOnCreateContextMenuListener(this); |
| } |
| |
| /** |
| * Prevents a context menu to be shown for the given view. This method will |
| * remove the {@link OnCreateContextMenuListener} on the view. |
| * |
| * @see #registerForContextMenu(View) |
| * @param view The view that should stop showing a context menu. |
| */ |
| public void unregisterForContextMenu(View view) { |
| view.setOnCreateContextMenuListener(null); |
| } |
| |
| /** |
| * This hook is called whenever an item in a context menu is selected. The |
| * default implementation simply returns false to have the normal processing |
| * happen (calling the item's Runnable or sending a message to its Handler |
| * as appropriate). You can use this method for any items for which you |
| * would like to do processing without those other facilities. |
| * <p> |
| * Use {@link MenuItem#getMenuInfo()} to get extra information set by the |
| * View that added this menu item. |
| * <p> |
| * Derived classes should call through to the base class for it to perform |
| * the default menu handling. |
| * |
| * @param item The context menu item that was selected. |
| * @return boolean Return false to allow normal context menu processing to |
| * proceed, true to consume it here. |
| */ |
| public boolean onContextItemSelected(MenuItem item) { |
| return false; |
| } |
| |
| void performStop() { |
| onStop(); |
| if (mStarted) { |
| mStarted = false; |
| if (mLoaderManager != null) { |
| if (mActivity == null || !mActivity.mChangingConfigurations) { |
| mLoaderManager.doStop(); |
| } else { |
| mLoaderManager.doRetain(); |
| } |
| } |
| } |
| } |
| } |