Android: onScrollStateChanged SCROLL_STATE_IDLE sometimes doesn't fire

Question

I\'m running into a bit of a problem. What I\'m doing: I\'ve got a ListView which has got some images in it. To make the scrolling smoother I\'ve disabled the images to show up

Answer 1

I have had this same problem and posted a workaround on the bug list:

For anybody still running into this problem (as I was last week) a workaround that works for me is the following: If android SDKInt == 7 set a onTouchListener on the (Abs)ListView

In that onTouchListener when the OnTouch event action is MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL you force a onScrollStateChanged with first a SCROLL_STATE_FLING and then a SCROLL_STATE_IDLE

Code example: In the onCreate:

  if(androidSDKInt <= 7){
      listViewDateSelector.setOnTouchListener(new FingerTracker(onScrollListener));       }

Then add a private class with:

  private class FingerTracker implements View.OnTouchListener {
      private OnScrollListener myOnScrollListener;

      public FingerTracker(OnScrollListener onScrollListener){
          myOnScrollListener = onScrollListener;          }

      public boolean onTouch(View view, MotionEvent event) {
          final int action = event.getAction();
          boolean mFingerUp = action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL;
          if (mFingerUp) {
              myOnScrollListener.onScrollStateChanged((AbsListView) view, OnScrollListener.SCROLL_STATE_FLING);
              myOnScrollListener.onScrollStateChanged((AbsListView) view, OnScrollListener.SCROLL_STATE_IDLE);
          }
          return false;           }       }