How to refresh a listview within a Fragment?

Adding a View makes a ListView within a fragment to refresh

• This might be a little bit hard to explain, so the best way I can think of, is providing you a Video showing up the issue. In the Video I show myself scrolling listview, and after 5 seconds, a View is created and added inside that holder in the bottom. In that moment, listview is refreshed. http://tinypic.com/player.php?v=vpz0k8%3E&s=8#.U0VrIvl_t8E The issue is the following: I've an Activity with a layout that consists of a: Fragment (above RelativeLayout), match parent, match parent. RelativeLayout, as wrap content. The fragment displays a ListView with animations for every row. If I add a View on the "RelativeLayout", it makes the fragment to readjust to the new size, as it's set above this RelativeLayout, so every Row is rebuilt again. Do you guys think in any way to avoid this? EDIT: Sourcecode: https://bitbucket.org/sergicast/listview-animated-buggy

• Answer:

  Don't start the animation if the layout process for the added footer view is running. The end of the layout process can be determined using the ViewTreeObserver (the start obviously starts with adding the footer view): hand.postDelayed(new Runnable() { @Override public void run() { ViewTreeObserver viewTreeObserver = holder.getViewTreeObserver(); viewTreeObserver.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { @SuppressWarnings("deprecation") @Override public void onGlobalLayout() { holder.getViewTreeObserver().removeGlobalOnLayoutListener(this); mIgnoreAnimation = false; } }); mIgnoreAnimation = true; holder.addView(viewToAdd); } }, 5000); Add this method to your Activity: public boolean ignoreAnimation() { return mIgnoreAnimation; } And check it in your Fragment: @Override public View getView(int position, View convertView, ViewGroup parent) { Context context = FragmentTest.this.getActivity(); TextView tv = new TextView(context); tv.setText("Pos: " + position); tv.setTextSize(35f); if (runAnimation()) { Animation anim = AnimationUtils.loadAnimation(context, R.anim.animation); tv.startAnimation(anim); } return tv; } private boolean runAnimation() { Activity activity = getActivity(); if (activity != null && activity instanceof MainActivity) { return ! ((MainActivity)activity).ignoreAnimation(); } return true; } Of course the whole Activity - Fragment communication can be improved considerably but the example gives you the idea how to solve the problem in general. While it prevents the animation from being started, it doesn't prevent the ListView from being refreshed although the user won't notice. If you are concerned about performance you can improve the Adapter code by re-using the views: @Override public View getView(int position, View convertView, ViewGroup parent) { Context context = FragmentTest.this.getActivity(); TextView tv = null; if (convertView != null && convertView instanceof TextView) { tv = (TextView) convertView; } else { tv = new TextView(context); }