Ah, the number of cells is not high, I'm testing between 8x8 and 12x12
Am Montag, 18. März 2013 14:53:18 UTC+1 schrieb user123:
>
> I'm trying to make one of these animations where an image "fades in" with
> tiles. (Note: I need this to work from Api 8)
>
> To do that, I created a black grid and put it on top of the image and
> using a handler, make each cell dissapear.
>
> It works but the animation takes a bit more than 1 second, even when I
> post to the handler without any delay. This looks laggy and strange. The
> effect has to be very quick.
>
> I tried many things - using programmatically generated linearlayout with
> rows instead of grid, using fade out animation, using no animation at all,
> toggling visibility with View.GONE, or View.INVISIBLE, or just setting the
> background color to 0x00000000. Nothing helps, I can't make the animation
> quicker.
>
> I tested in 2.3 smartphone, in 4.2 smartphone and 4.2 tablet, all look the
> same. Well, in the 4.2 devices, the animation sometimes doesn't show at all
> - like it was executed already. But when it's visible, it's slow.
>
> Any advice on this? Or do I have to use a completly different approach? Is
> there a library to do this kind of effects, maybe?
>
> Here is my relevant code:
>
> List<Integer> done = new ArrayList<Integer>();
>
> private Handler handler = new Handler();
> private Runnable fadeInRunnable = new Runnable() {
> @Override
> public void run() {
> if (!done.isEmpty()) {
> // int index = (int)(Math.random() * done.size());
> int index = 0;
>
> int itemIndex = done.get(index);
> int rowIndex = (int)Math.floor(itemIndex / ROWS);
>
> ViewGroup row = (ViewGroup)imageMask.getChildAt(rowIndex);
>
> View child = row.getChildAt(itemIndex - (rowIndex * ROWS));
>
> //
> child.startAnimation(AnimationUtils.loadAnimation(getActivity(),
> R.anim.fade_out_short));
> // child.startAnimation(anim);
> child.setBackgroundColor(0x00000000);
> // child.setVisibility(View.INVISIBLE);
>
> done.remove(index);
>
> handler.post(this);
> // handler.postDelayed(this, 1);
> }
> }
> };
>
>
> Thanks in advance,
> Ivan
>
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