title: Implementing accessability on custom view gives no verbal feedback
body: <p>I have turned accessability on, and my device speaks as I navigate around.</p>
  
  <p>I have a custom <code>seekbar</code> and have implemented the folllowing:</p>
  
  <p><code>onTouchEvent</code> excerpt:</p>
  
  <pre><code>...
  case MotionEvent.ACTION_MOVE:
  
      getParent().requestDisallowInterceptTouchEvent(true);
  
      setTouchAngle(pointToAngle(touchX, touchY));
      score = getScoreFromAngle(angleStart,touchAngle);
      if (onScoreSetListener != null) {
          onScoreSetListener.onScorePoll(this, score);
          sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
      }
      break;
  ...
  </code></pre>
  
  <p><code>onPopulateAccessibilityEvent</code> method:</p>
  
  <pre><code>    @Override
      public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
          super.onPopulateAccessibilityEvent(event);
  
          LogUtils.i(TAG,"onPopulateAccessibilityEvent()",null);
  
          switch (event.getEventType()) {
              case AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED:
  
                  LogUtils.d(TAG,"dispatchPopulateAccessibilityEvent() TYPE_VIEW_TEXT_CHANGED",null);
  
                  event.getText().add(String.valueOf(getScore()));
                  break;
              }
      }
  </code></pre>
  
  <p>I can see <code>onPopulateAccessibilityEvent</code> being called in <code>LogCat</code> successfully, but the device is not giving any feedback. I expect the current score to be read back, but nothing.</p>
  
  <p>Does anyone have any insight?</p>