| /* |
| * 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.widget; |
| |
| import java.util.ArrayList; |
| |
| import android.animation.ObjectAnimator; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.TypedArray; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.ViewGroup.LayoutParams; |
| import android.view.animation.Animation; |
| import android.view.animation.AnimationUtils; |
| |
| /** |
| * Base class for a {@link AdapterView} that will perform animations |
| * when switching between its views. |
| * |
| * @attr ref android.R.styleable#AdapterViewAnimator_inAnimation |
| * @attr ref android.R.styleable#AdapterViewAnimator_outAnimation |
| * @attr ref android.R.styleable#AdapterViewAnimator_animateFirstView |
| */ |
| public abstract class AdapterViewAnimator extends AdapterView<Adapter> |
| implements RemoteViewsAdapter.RemoteAdapterConnectionCallback{ |
| private static final String TAG = "RemoteViewAnimator"; |
| |
| /** |
| * The index of the current child, which appears anywhere from the beginning |
| * to the end of the current set of children, as specified by {@link #mActiveOffset} |
| */ |
| int mWhichChild = 0; |
| |
| /** |
| * Whether or not the first view(s) should be animated in |
| */ |
| boolean mAnimateFirstTime = true; |
| |
| /** |
| * Represents where the in the current window of |
| * views the current <code>mDisplayedChild</code> sits |
| */ |
| int mActiveOffset = 0; |
| |
| /** |
| * The number of views that the {@link AdapterViewAnimator} keeps as children at any |
| * given time (not counting views that are pending removal, see {@link #mPreviousViews}). |
| */ |
| int mNumActiveViews = 1; |
| |
| /** |
| * Array of the children of the {@link AdapterViewAnimator}. This array |
| * is accessed in a circular fashion |
| */ |
| View[] mActiveViews; |
| |
| /** |
| * List of views pending removal from the {@link AdapterViewAnimator} |
| */ |
| ArrayList<View> mPreviousViews; |
| |
| /** |
| * The index, relative to the adapter, of the beginning of the window of views |
| */ |
| int mCurrentWindowStart = 0; |
| |
| /** |
| * The index, relative to the adapter, of the end of the window of views |
| */ |
| int mCurrentWindowEnd = -1; |
| |
| /** |
| * The same as {@link #mCurrentWindowStart}, except when the we have bounded |
| * {@link #mCurrentWindowStart} to be non-negative |
| */ |
| int mCurrentWindowStartUnbounded = 0; |
| |
| /** |
| * Handler to post events to the main thread |
| */ |
| Handler mMainQueue; |
| |
| /** |
| * Listens for data changes from the adapter |
| */ |
| AdapterDataSetObserver mDataSetObserver; |
| |
| /** |
| * The {@link Adapter} for this {@link AdapterViewAnimator} |
| */ |
| Adapter mAdapter; |
| |
| /** |
| * The {@link RemoteViewsAdapter} for this {@link AdapterViewAnimator} |
| */ |
| RemoteViewsAdapter mRemoteViewsAdapter; |
| |
| /** |
| * Specifies whether this is the first time the animator is showing views |
| */ |
| boolean mFirstTime = true; |
| |
| /** |
| * Specifies if the animator should wrap from 0 to the end and vice versa |
| * or have hard boundaries at the beginning and end |
| */ |
| boolean mShouldLoop = true; |
| |
| /** |
| * The width and height of some child, used as a size reference in-case our |
| * dimensions are unspecified by the parent. |
| */ |
| int mReferenceChildWidth = -1; |
| int mReferenceChildHeight = -1; |
| |
| /** |
| * TODO: Animation stuff is still in flux, waiting on the new framework to settle a bit. |
| */ |
| Animation mInAnimation; |
| Animation mOutAnimation; |
| private ArrayList<View> mViewsToBringToFront; |
| |
| public AdapterViewAnimator(Context context) { |
| super(context); |
| initViewAnimator(); |
| } |
| |
| public AdapterViewAnimator(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, |
| com.android.internal.R.styleable.ViewAnimator); |
| int resource = a.getResourceId( |
| com.android.internal.R.styleable.ViewAnimator_inAnimation, 0); |
| if (resource > 0) { |
| setInAnimation(context, resource); |
| } |
| |
| resource = a.getResourceId(com.android.internal.R.styleable.ViewAnimator_outAnimation, 0); |
| if (resource > 0) { |
| setOutAnimation(context, resource); |
| } |
| |
| boolean flag = a.getBoolean( |
| com.android.internal.R.styleable.ViewAnimator_animateFirstView, true); |
| setAnimateFirstView(flag); |
| |
| a.recycle(); |
| |
| initViewAnimator(); |
| } |
| |
| /** |
| * Initialize this {@link AdapterViewAnimator} |
| */ |
| private void initViewAnimator() { |
| mMainQueue = new Handler(Looper.myLooper()); |
| mActiveViews = new View[mNumActiveViews]; |
| mPreviousViews = new ArrayList<View>(); |
| mViewsToBringToFront = new ArrayList<View>(); |
| } |
| |
| /** |
| * This method is used by subclasses to configure the animator to display the |
| * desired number of views, and specify the offset |
| * |
| * @param numVisibleViews The number of views the animator keeps in the {@link ViewGroup} |
| * @param activeOffset This parameter specifies where the current index ({@link #mWhichChild}) |
| * sits within the window. For example if activeOffset is 1, and numVisibleViews is 3, |
| * and {@link #setDisplayedChild(int)} is called with 10, then the effective window will |
| * be the indexes 9, 10, and 11. In the same example, if activeOffset were 0, then the |
| * window would instead contain indexes 10, 11 and 12. |
| * @param shouldLoop If the animator is show view 0, and setPrevious() is called, do we |
| * we loop back to the end, or do we do nothing |
| */ |
| void configureViewAnimator(int numVisibleViews, int activeOffset, boolean shouldLoop) { |
| if (activeOffset > numVisibleViews - 1) { |
| // Throw an exception here. |
| } |
| mNumActiveViews = numVisibleViews; |
| mActiveOffset = activeOffset; |
| mActiveViews = new View[mNumActiveViews]; |
| mPreviousViews.clear(); |
| removeAllViewsInLayout(); |
| mCurrentWindowStart = 0; |
| mCurrentWindowEnd = -1; |
| mShouldLoop = shouldLoop; |
| } |
| |
| /** |
| * This class should be overridden by subclasses to customize view transitions within |
| * the set of visible views |
| * |
| * @param fromIndex The relative index within the window that the view was in, -1 if it wasn't |
| * in the window |
| * @param toIndex The relative index within the window that the view is going to, -1 if it is |
| * being removed |
| * @param view The view that is being animated |
| */ |
| void animateViewForTransition(int fromIndex, int toIndex, View view) { |
| ObjectAnimator pa; |
| if (fromIndex == -1) { |
| view.setAlpha(0.0f); |
| pa = new ObjectAnimator(400, view, "alpha", 0.0f, 1.0f); |
| pa.start(); |
| } else if (toIndex == -1) { |
| pa = new ObjectAnimator(400, view, "alpha", 1.0f, 0.0f); |
| pa.start(); |
| } |
| } |
| |
| /** |
| * Sets which child view will be displayed. |
| * |
| * @param whichChild the index of the child view to display |
| */ |
| public void setDisplayedChild(int whichChild) { |
| if (mAdapter != null) { |
| mWhichChild = whichChild; |
| if (whichChild >= mAdapter.getCount()) { |
| mWhichChild = mShouldLoop ? 0 : mAdapter.getCount() - 1; |
| } else if (whichChild < 0) { |
| mWhichChild = mShouldLoop ? mAdapter.getCount() - 1 : 0; |
| } |
| |
| boolean hasFocus = getFocusedChild() != null; |
| // This will clear old focus if we had it |
| showOnly(mWhichChild); |
| if (hasFocus) { |
| // Try to retake focus if we had it |
| requestFocus(FOCUS_FORWARD); |
| } |
| } |
| } |
| |
| /** |
| * Return default inAnimation. To be overriden by subclasses. |
| */ |
| Animation getDefaultInAnimation() { |
| return null; |
| } |
| |
| /** |
| * Return default outAnimation. To be overridden by subclasses. |
| */ |
| Animation getDefaultOutAnimation() { |
| return null; |
| } |
| |
| /** |
| * To be overridden by subclasses. This method applies a view / index specific |
| * transform to the child view. |
| * |
| * @param child |
| * @param relativeIndex |
| */ |
| void applyTransformForChildAtIndex(View child, int relativeIndex) { |
| } |
| |
| /** |
| * Returns the index of the currently displayed child view. |
| */ |
| public int getDisplayedChild() { |
| return mWhichChild; |
| } |
| |
| /** |
| * Manually shows the next child. |
| */ |
| public void showNext() { |
| setDisplayedChild(mWhichChild + 1); |
| } |
| |
| /** |
| * Manually shows the previous child. |
| */ |
| public void showPrevious() { |
| setDisplayedChild(mWhichChild - 1); |
| } |
| |
| /** |
| * Shows only the specified child. The other displays Views exit the screen, |
| * optionally with the with the {@link #getOutAnimation() out animation} and |
| * the specified child enters the screen, optionally with the |
| * {@link #getInAnimation() in animation}. |
| * |
| * @param childIndex The index of the child to be shown. |
| * @param animate Whether or not to use the in and out animations, defaults |
| * to true. |
| */ |
| void showOnly(int childIndex, boolean animate) { |
| showOnly(childIndex, animate, false); |
| } |
| |
| private int modulo(int pos, int size) { |
| return (size + (pos % size)) % size; |
| } |
| |
| /** |
| * Get the view at this index relative to the current window's start |
| * |
| * @param relativeIndex Position relative to the current window's start |
| * @return View at this index, null if the index is outside the bounds |
| */ |
| View getViewAtRelativeIndex(int relativeIndex) { |
| if (relativeIndex >= 0 && relativeIndex <= mNumActiveViews - 1) { |
| int index = mCurrentWindowStartUnbounded + relativeIndex; |
| return mActiveViews[modulo(index, mNumActiveViews)]; |
| } |
| return null; |
| } |
| |
| LayoutParams createOrReuseLayoutParams(View v) { |
| final ViewGroup.LayoutParams currentLp = v.getLayoutParams(); |
| if (currentLp instanceof ViewGroup.LayoutParams) { |
| LayoutParams lp = (LayoutParams) currentLp; |
| return lp; |
| } |
| return new ViewGroup.LayoutParams(0, 0); |
| } |
| |
| private void refreshChildren() { |
| for (int i = mCurrentWindowStart; i <= mCurrentWindowEnd; i++) { |
| int index = modulo(i, mNumActiveViews); |
| |
| // get the fresh child from the adapter |
| View updatedChild = mAdapter.getView(i, null, this); |
| |
| if (mActiveViews[index] != null) { |
| FrameLayout fl = (FrameLayout) mActiveViews[index]; |
| // flush out the old child |
| fl.removeAllViewsInLayout(); |
| // add the new child to the frame, if it exists |
| if (updatedChild != null) { |
| fl.addView(updatedChild); |
| } |
| } |
| } |
| } |
| |
| void showOnly(int childIndex, boolean animate, boolean onLayout) { |
| if (mAdapter == null) return; |
| |
| for (int i = 0; i < mPreviousViews.size(); i++) { |
| View viewToRemove = mPreviousViews.get(i); |
| viewToRemove.clearAnimation(); |
| if (viewToRemove instanceof ViewGroup) { |
| ViewGroup vg = (ViewGroup) viewToRemove; |
| vg.removeAllViewsInLayout(); |
| } |
| // applyTransformForChildAtIndex here just allows for any cleanup |
| // associated with this view that may need to be done by a subclass |
| applyTransformForChildAtIndex(viewToRemove, -1); |
| |
| removeViewInLayout(viewToRemove); |
| } |
| mPreviousViews.clear(); |
| int newWindowStartUnbounded = childIndex - mActiveOffset; |
| int newWindowEndUnbounded = newWindowStartUnbounded + mNumActiveViews - 1; |
| int newWindowStart = Math.max(0, newWindowStartUnbounded); |
| int newWindowEnd = Math.min(mAdapter.getCount(), newWindowEndUnbounded); |
| |
| // This section clears out any items that are in our mActiveViews list |
| // but are outside the effective bounds of our window (this is becomes an issue |
| // at the extremities of the list, eg. where newWindowStartUnbounded < 0 or |
| // newWindowEndUnbounded > mAdapter.getCount() - 1 |
| for (int i = newWindowStartUnbounded; i < newWindowEndUnbounded; i++) { |
| if (i < newWindowStart || i > newWindowEnd) { |
| int index = modulo(i, mNumActiveViews); |
| if (mActiveViews[index] != null) { |
| View previousView = mActiveViews[index]; |
| mPreviousViews.add(previousView); |
| int previousViewRelativeIndex = modulo(index - mCurrentWindowStart, |
| mNumActiveViews); |
| animateViewForTransition(previousViewRelativeIndex, -1, previousView); |
| mActiveViews[index] = null; |
| } |
| } |
| } |
| |
| // If the window has changed |
| if (! (newWindowStart == mCurrentWindowStart && newWindowEnd == mCurrentWindowEnd)) { |
| // Run through the indices in the new range |
| for (int i = newWindowStart; i <= newWindowEnd; i++) { |
| |
| int oldRelativeIndex = i - mCurrentWindowStartUnbounded; |
| int newRelativeIndex = i - newWindowStartUnbounded; |
| int index = modulo(i, mNumActiveViews); |
| |
| // If this item is in the current window, great, we just need to apply |
| // the transform for it's new relative position in the window, and animate |
| // between it's current and new relative positions |
| if (i >= mCurrentWindowStart && i <= mCurrentWindowEnd) { |
| View view = mActiveViews[index]; |
| applyTransformForChildAtIndex(view, newRelativeIndex); |
| animateViewForTransition(oldRelativeIndex, newRelativeIndex, view); |
| |
| // Otherwise this view is new, so first we have to displace the view that's |
| // taking the new view's place within our cache (a circular array) |
| } else { |
| if (mActiveViews[index] != null) { |
| View previousView = mActiveViews[index]; |
| mPreviousViews.add(previousView); |
| int previousViewRelativeIndex = modulo(index - mCurrentWindowStart, |
| mNumActiveViews); |
| animateViewForTransition(previousViewRelativeIndex, -1, previousView); |
| |
| if (mCurrentWindowStart > newWindowStart) { |
| mViewsToBringToFront.add(previousView); |
| } |
| } |
| |
| // We've cleared a spot for the new view. Get it from the adapter, add it |
| // and apply any transform / animation |
| View newView = mAdapter.getView(i, null, this); |
| |
| // We wrap the new view in a FrameLayout so as to respect the contract |
| // with the adapter, that is, that we don't modify this view directly |
| FrameLayout fl = new FrameLayout(mContext); |
| |
| // If the view from the adapter is null, we still keep an empty frame in place |
| if (newView != null) { |
| fl.addView(newView); |
| } |
| mActiveViews[index] = fl; |
| addChild(fl); |
| applyTransformForChildAtIndex(fl, newRelativeIndex); |
| animateViewForTransition(-1, newRelativeIndex, fl); |
| } |
| mActiveViews[index].bringToFront(); |
| } |
| |
| for (int i = 0; i < mViewsToBringToFront.size(); i++) { |
| View v = mViewsToBringToFront.get(i); |
| v.bringToFront(); |
| } |
| mViewsToBringToFront.clear(); |
| |
| mCurrentWindowStart = newWindowStart; |
| mCurrentWindowEnd = newWindowEnd; |
| mCurrentWindowStartUnbounded = newWindowStartUnbounded; |
| } |
| |
| mFirstTime = false; |
| if (!onLayout) { |
| requestLayout(); |
| invalidate(); |
| } else { |
| // If the Adapter tries to layout the current view when we get it using getView |
| // above the layout will end up being ignored since we are currently laying out, so |
| // we post a delayed requestLayout and invalidate |
| mMainQueue.post(new Runnable() { |
| @Override |
| public void run() { |
| requestLayout(); |
| invalidate(); |
| } |
| }); |
| } |
| } |
| |
| private void addChild(View child) { |
| addViewInLayout(child, -1, createOrReuseLayoutParams(child)); |
| |
| // This code is used to obtain a reference width and height of a child in case we need |
| // to decide our own size. TODO: Do we want to update the size of the child that we're |
| // using for reference size? If so, when? |
| if (mReferenceChildWidth == -1 || mReferenceChildHeight == -1) { |
| int measureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); |
| child.measure(measureSpec, measureSpec); |
| mReferenceChildWidth = child.getMeasuredWidth(); |
| mReferenceChildHeight = child.getMeasuredHeight(); |
| } |
| } |
| |
| private void measureChildren() { |
| final int count = getChildCount(); |
| final int childWidth = mMeasuredWidth - mPaddingLeft - mPaddingRight; |
| final int childHeight = mMeasuredHeight - mPaddingTop - mPaddingBottom; |
| |
| for (int i = 0; i < count; i++) { |
| final View child = getChildAt(i); |
| child.measure(MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); |
| } |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); |
| int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); |
| final int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); |
| final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); |
| |
| boolean haveChildRefSize = (mReferenceChildWidth != -1 && mReferenceChildHeight != -1); |
| |
| // We need to deal with the case where our parent hasn't told us how |
| // big we should be. In this case we try to use the desired size of the first |
| // child added. |
| if (heightSpecMode == MeasureSpec.UNSPECIFIED) { |
| heightSpecSize = haveChildRefSize ? mReferenceChildHeight + mPaddingTop + |
| mPaddingBottom : 0; |
| } else if (heightSpecMode == MeasureSpec.AT_MOST) { |
| heightSpecSize = haveChildRefSize ? Math.min(mReferenceChildHeight + mPaddingTop + |
| mPaddingBottom, heightSpecSize) : 0; |
| } |
| |
| if (widthSpecMode == MeasureSpec.UNSPECIFIED) { |
| widthSpecSize = haveChildRefSize ? mReferenceChildWidth + mPaddingLeft + |
| mPaddingRight : 0; |
| } else if (heightSpecMode == MeasureSpec.AT_MOST) { |
| widthSpecSize = haveChildRefSize ? Math.min(mReferenceChildWidth + mPaddingLeft + |
| mPaddingRight, widthSpecSize) : 0; |
| } |
| |
| setMeasuredDimension(widthSpecSize, heightSpecSize); |
| measureChildren(); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| boolean dataChanged = mDataChanged; |
| if (dataChanged) { |
| handleDataChanged(); |
| |
| // if the data changes, mWhichChild might be out of the bounds of the adapter |
| // in this case, we reset mWhichChild to the beginning |
| if (mWhichChild >= mAdapter.getCount()) { |
| mWhichChild = 0; |
| |
| showOnly(mWhichChild, true, true); |
| } |
| refreshChildren(); |
| } |
| |
| final int childCount = getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| final View child = getChildAt(i); |
| |
| int childRight = mPaddingLeft + child.getMeasuredWidth(); |
| int childBottom = mPaddingTop + child.getMeasuredHeight(); |
| |
| child.layout(mPaddingLeft, mPaddingTop, childRight, childBottom); |
| } |
| mDataChanged = false; |
| } |
| |
| static class SavedState extends BaseSavedState { |
| int whichChild; |
| |
| /** |
| * Constructor called from {@link AdapterViewAnimator#onSaveInstanceState()} |
| */ |
| SavedState(Parcelable superState, int whichChild) { |
| super(superState); |
| this.whichChild = whichChild; |
| } |
| |
| /** |
| * Constructor called from {@link #CREATOR} |
| */ |
| private SavedState(Parcel in) { |
| super(in); |
| whichChild = in.readInt(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| super.writeToParcel(out, flags); |
| out.writeInt(whichChild); |
| } |
| |
| @Override |
| public String toString() { |
| return "AdapterViewAnimator.SavedState{ whichChild = " + whichChild + " }"; |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR |
| = new Parcelable.Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| |
| @Override |
| public Parcelable onSaveInstanceState() { |
| Parcelable superState = super.onSaveInstanceState(); |
| return new SavedState(superState, mWhichChild); |
| } |
| |
| @Override |
| public void onRestoreInstanceState(Parcelable state) { |
| SavedState ss = (SavedState) state; |
| super.onRestoreInstanceState(ss.getSuperState()); |
| |
| // Here we set mWhichChild in addition to setDisplayedChild |
| // We do the former in case mAdapter is null, and hence setDisplayedChild won't |
| // set mWhichChild |
| mWhichChild = ss.whichChild; |
| setDisplayedChild(mWhichChild); |
| } |
| |
| /** |
| * Shows only the specified child. The other displays Views exit the screen |
| * with the {@link #getOutAnimation() out animation} and the specified child |
| * enters the screen with the {@link #getInAnimation() in animation}. |
| * |
| * @param childIndex The index of the child to be shown. |
| */ |
| void showOnly(int childIndex) { |
| final boolean animate = (!mFirstTime || mAnimateFirstTime); |
| showOnly(childIndex, animate); |
| } |
| |
| /** |
| * Returns the View corresponding to the currently displayed child. |
| * |
| * @return The View currently displayed. |
| * |
| * @see #getDisplayedChild() |
| */ |
| public View getCurrentView() { |
| return getViewAtRelativeIndex(mActiveOffset); |
| } |
| |
| /** |
| * Returns the current animation used to animate a View that enters the screen. |
| * |
| * @return An Animation or null if none is set. |
| * |
| * @see #setInAnimation(android.view.animation.Animation) |
| * @see #setInAnimation(android.content.Context, int) |
| */ |
| public Animation getInAnimation() { |
| return mInAnimation; |
| } |
| |
| /** |
| * Specifies the animation used to animate a View that enters the screen. |
| * |
| * @param inAnimation The animation started when a View enters the screen. |
| * |
| * @see #getInAnimation() |
| * @see #setInAnimation(android.content.Context, int) |
| */ |
| public void setInAnimation(Animation inAnimation) { |
| mInAnimation = inAnimation; |
| } |
| |
| /** |
| * Returns the current animation used to animate a View that exits the screen. |
| * |
| * @return An Animation or null if none is set. |
| * |
| * @see #setOutAnimation(android.view.animation.Animation) |
| * @see #setOutAnimation(android.content.Context, int) |
| */ |
| public Animation getOutAnimation() { |
| return mOutAnimation; |
| } |
| |
| /** |
| * Specifies the animation used to animate a View that exit the screen. |
| * |
| * @param outAnimation The animation started when a View exit the screen. |
| * |
| * @see #getOutAnimation() |
| * @see #setOutAnimation(android.content.Context, int) |
| */ |
| public void setOutAnimation(Animation outAnimation) { |
| mOutAnimation = outAnimation; |
| } |
| |
| /** |
| * Specifies the animation used to animate a View that enters the screen. |
| * |
| * @param context The application's environment. |
| * @param resourceID The resource id of the animation. |
| * |
| * @see #getInAnimation() |
| * @see #setInAnimation(android.view.animation.Animation) |
| */ |
| public void setInAnimation(Context context, int resourceID) { |
| setInAnimation(AnimationUtils.loadAnimation(context, resourceID)); |
| } |
| |
| /** |
| * Specifies the animation used to animate a View that exit the screen. |
| * |
| * @param context The application's environment. |
| * @param resourceID The resource id of the animation. |
| * |
| * @see #getOutAnimation() |
| * @see #setOutAnimation(android.view.animation.Animation) |
| */ |
| public void setOutAnimation(Context context, int resourceID) { |
| setOutAnimation(AnimationUtils.loadAnimation(context, resourceID)); |
| } |
| |
| /** |
| * Indicates whether the current View should be animated the first time |
| * the ViewAnimation is displayed. |
| * |
| * @param animate True to animate the current View the first time it is displayed, |
| * false otherwise. |
| */ |
| public void setAnimateFirstView(boolean animate) { |
| mAnimateFirstTime = animate; |
| } |
| |
| @Override |
| public int getBaseline() { |
| return (getCurrentView() != null) ? getCurrentView().getBaseline() : super.getBaseline(); |
| } |
| |
| @Override |
| public Adapter getAdapter() { |
| return mAdapter; |
| } |
| |
| @Override |
| public void setAdapter(Adapter adapter) { |
| if (mAdapter != null && mDataSetObserver != null) { |
| mAdapter.unregisterDataSetObserver(mDataSetObserver); |
| } |
| |
| mAdapter = adapter; |
| checkFocus(); |
| |
| if (mAdapter != null) { |
| mDataSetObserver = new AdapterDataSetObserver(); |
| mAdapter.registerDataSetObserver(mDataSetObserver); |
| } |
| setFocusable(true); |
| } |
| |
| /** |
| * Sets up this AdapterViewAnimator to use a remote views adapter which connects to a |
| * RemoteViewsService through the specified intent. |
| * |
| * @param intent the intent used to identify the RemoteViewsService for the adapter to |
| * connect to. |
| */ |
| @android.view.RemotableViewMethod |
| public void setRemoteViewsAdapter(Intent intent) { |
| mRemoteViewsAdapter = new RemoteViewsAdapter(getContext(), intent, this); |
| } |
| |
| @Override |
| public void setSelection(int position) { |
| setDisplayedChild(position); |
| } |
| |
| @Override |
| public View getSelectedView() { |
| return getViewAtRelativeIndex(mActiveOffset); |
| } |
| |
| /** |
| * Called back when the adapter connects to the RemoteViewsService. |
| */ |
| public void onRemoteAdapterConnected() { |
| if (mRemoteViewsAdapter != mAdapter) { |
| setAdapter(mRemoteViewsAdapter); |
| } |
| } |
| |
| /** |
| * Called back when the adapter disconnects from the RemoteViewsService. |
| */ |
| public void onRemoteAdapterDisconnected() { |
| if (mRemoteViewsAdapter != mAdapter) { |
| mRemoteViewsAdapter = null; |
| setAdapter(mRemoteViewsAdapter); |
| } |
| } |
| } |