/**
* Highlight current playing item Make the playing item can be seen.
*
* @param position
*/
private void onItemPlay(int position) {
// Make the the playing item can be seen.
mMusicListView.smoothScrollToPosition(position);
int prePlayingPosition = mMusicListAdapter.getPlayingPosition();
if (prePlayingPosition >= mMusicListView.getFirstVisiblePosition()
&& prePlayingPosition <= mMusicListView.getLastVisiblePosition()) {
int preItem = prePlayingPosition - mMusicListView.getFirstVisiblePosition();
((ViewGroup) mMusicListView.getChildAt(preItem)).getChildAt(0).setVisibility(View.INVISIBLE);
}
mMusicListAdapter.setPlayingPosition(position);
if (mMusicListView.getLastVisiblePosition() < position
|| mMusicListView.getFirstVisiblePosition() > position) return;
int currentItem = position - mMusicListView.getFirstVisiblePosition();
((ViewGroup) mMusicListView.getChildAt(currentItem)).getChildAt(0).setVisibility(View.VISIBLE);
}
/** Called by UI Thread MainActivity.java */
public void onMusicListChanged() {
mMusicListAdapter.notifyDataSetChanged();
}