@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
mForecastAdapter.swapCursor(data);
updateEmptyView();
if (data.getCount() == 0) {
getActivity().supportStartPostponedEnterTransition();
} else {
mRecyclerView
.getViewTreeObserver()
.addOnPreDrawListener(
new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
// Since we know we're going to get items, we keep the listener around until
// we see Children.
if (mRecyclerView.getChildCount() > 0) {
mRecyclerView.getViewTreeObserver().removeOnPreDrawListener(this);
int position = mForecastAdapter.getSelectedItemPosition();
if (position == RecyclerView.NO_POSITION && -1 != mInitialSelectedDate) {
Cursor data = mForecastAdapter.getCursor();
int count = data.getCount();
int dateColumn =
data.getColumnIndex(WeatherContract.WeatherEntry.COLUMN_DATE);
for (int i = 0; i < count; i++) {
data.moveToPosition(i);
if (data.getLong(dateColumn) == mInitialSelectedDate) {
position = i;
break;
}
}
}
if (position == RecyclerView.NO_POSITION) position = 0;
// If we don't need to restart the loader, and there's a desired position to
// restore
// to, do so now.
mRecyclerView.smoothScrollToPosition(position);
RecyclerView.ViewHolder vh =
mRecyclerView.findViewHolderForAdapterPosition(position);
if (null != vh && mAutoSelectView) {
mForecastAdapter.selectView(vh);
}
if (mHoldForTransition) {
getActivity().supportStartPostponedEnterTransition();
}
return true;
}
return false;
}
});
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
mForecastAdapter.swapCursor(null);
}