public void setAdapter(TaskDescriptionAdapter adapter) {
Log.d(TAG, "adapter.getCount() = " + adapter.getCount());
mAdapter = adapter;
mAdapter.registerDataSetObserver(
new DataSetObserver() {
public void onChanged() {
update();
}
public void onInvalidated() {
update();
}
});
DisplayMetrics dm = getResources().getDisplayMetrics();
int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(dm.widthPixels, MeasureSpec.AT_MOST);
int childheightMeasureSpec = MeasureSpec.makeMeasureSpec(dm.heightPixels, MeasureSpec.AT_MOST);
View child = mAdapter.createView(mLinearLayout);
child.measure(childWidthMeasureSpec, childheightMeasureSpec);
mNumItemsInOneScreenful =
(int) FloatMath.ceil(dm.widthPixels / (float) child.getMeasuredWidth());
addToRecycledViews(child);
mCellWidth = child.getMeasuredWidth();
for (int i = 0; i < mNumItemsInOneScreenful - 1; i++) {
addToRecycledViews(mAdapter.createView(mLinearLayout));
}
}
private void update() {
for (int i = 0; i < mLinearLayout.getChildCount(); i++) {
View v = mLinearLayout.getChildAt(i);
addToRecycledViews(v);
mAdapter.recycleView(v);
}
LayoutTransition transitioner = getLayoutTransition();
setLayoutTransition(null);
mLinearLayout.removeAllViews();
Iterator<View> recycledViews = mRecycledViews.iterator();
for (int i = mAdapter.getCount() - 1; i >= 0; i--) {
View old = null;
if (recycledViews.hasNext()) {
old = recycledViews.next();
recycledViews.remove();
old.setVisibility(VISIBLE);
}
final View view = mAdapter.getView(i, old, mLinearLayout);
if (mFadedEdgeDrawHelper != null) {
mFadedEdgeDrawHelper.addViewCallback(view);
}
OnTouchListener noOpListener =
new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return true;
}
};
view.setOnClickListener(
new OnClickListener() {
public void onClick(View v) {}
});
// We don't want a click sound when we dimiss recents
view.setSoundEffectsEnabled(false);
OnClickListener launchAppListener =
new OnClickListener() {
public void onClick(View v) {
mCallback.handleOnClick(view);
}
};
OnClickListener lockToScreenClickListener =
new OnClickListener() {
@Override
public void onClick(View v) {
mCallback.handleLockToScreen(view);
}
};
RecentsPanelView.ViewHolder holder = (RecentsPanelView.ViewHolder) view.getTag();
final View thumbnailView = holder.thumbnailView;
final View lockToScreenView = holder.lockToScreenView;
/*OnLongClickListener longClickListener = new OnLongClickListener() {
public boolean onLongClick(View v) {
final View anchorView = view.findViewById(R.id.app_description);
mCallback.handleLongPress(view, anchorView, thumbnailView);
return true;
}
};*/
thumbnailView.setClickable(true);
thumbnailView.setOnClickListener(launchAppListener);
if (lockToScreenView != null) {
lockToScreenView.setClickable(true);
lockToScreenView.setOnClickListener(lockToScreenClickListener);
}
// thumbnailView.setOnLongClickListener(longClickListener);
// We don't want to dismiss recents if a user clicks on the app title
// (we also don't want to launch the app either, though, because the
// app title is a small target and doesn't have great click feedback)
final View appTitle = view.findViewById(R.id.app_label);
appTitle.setContentDescription(" ");
appTitle.setOnTouchListener(noOpListener);
mLinearLayout.addView(view);
}
setLayoutTransition(transitioner);
// Scroll to end after initial layout.
final OnGlobalLayoutListener updateScroll =
new OnGlobalLayoutListener() {
public void onGlobalLayout() {
mLastScrollPosition = scrollPositionOfMostRecent();
scrollTo(mLastScrollPosition, 0);
final ViewTreeObserver observer = getViewTreeObserver();
if (observer.isAlive()) {
observer.removeOnGlobalLayoutListener(this);
}
}
};
getViewTreeObserver().addOnGlobalLayoutListener(updateScroll);
}