Edit Question - KnowledgeHub

Title Body

I have a strange problem with an AlphaAnimation . It is supposed to run repeatedly when an AsyncTask handler is called. However, the first time the handler is called in the Activity , the animation won't start unless I touch the screen or if the UI is updated (by pressing the phone's menu button for example). The strange part is that once the animation has run at least once, it will start without problem if the handler is called again. Here's what the code looks like: // AsyncTask handler public void onNetworkEvent() { this.runOnUiThread(new Runnable() { @Override public void run() { flashScreen(Animation.INFINITE); } }); } // Called method private void flashScreen(int repeatCount) { final View flashView = this.findViewById(R.id.mainMenuFlashView); AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0); alphaAnimation.setRepeatCount(repeatCount); alphaAnimation.setRepeatMode(Animation.RESTART); alphaAnimation.setDuration(300); alphaAnimation.setInterpolator(new DecelerateInterpolator()); alphaAnimation.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) { flashView.setVisibility(View.VISIBLE); } @Override public void onAnimationEnd(Animation animation) { flashView.setVisibility(View.GONE); } @Override public void onAnimationRepeat(Animation animation) { } }); flashView.startAnimation(alphaAnimation); } I have noticed that runOnUIThread isn't necessary (same results occur if I don't use it), but I prefer keeping it as I'm not on the UI thread. Any ideas on what could cause this?

Tags (comma-separated) Cancel