[TIMOB-17274] Android: Animation suddenly stops

<Alloy>
	<Window class="container">
	  <View borderWidth="1" borderColor="black" width="30" height="Titanium.UI.FILL"></View>
    <View borderWidth="1" borderColor="black" width="Titanium.UI.FILL" height="30"></View>
    <View borderWidth="1" borderColor="black" width="60" height="Titanium.UI.FILL"></View>
    <View borderWidth="1" borderColor="black" width="Titanium.UI.FILL" height="60"></View>
    <View borderWidth="1" borderColor="black" width="90" height="Titanium.UI.FILL"></View>
    <View borderWidth="1" borderColor="black" width="Titanium.UI.FILL" height="90"></View>
	</Window>
</Alloy>

var view = Ti.UI.createView({
  backgroundColor: 'green',
  opacity: 1,
  width: 30,
  height: 30,
});
  
var baseX, baseY;
var onPostLayout = function() {
  baseX = view.rect.x;
  baseY = view.rect.y;

  Ti.API.info('postlayout: ' + baseX + ", " + baseY);

  startAnimation();
  
  view.removeEventListener('postlayout', onPostLayout);
};

view.addEventListener('postlayout', onPostLayout);

var animation = Ti.UI.createAnimation();
  
animation.addEventListener('complete', function() {
  Ti.API.info('Animation complete');
  startAnimation();
});
  
var shiftX = 15;
var shiftY = 15;
  
function startAnimation() {
  shiftX = -shiftX;
  shiftY = -shiftY;
       
  animation.left = baseX + shiftX;
  animation.top = baseY + shiftY;
  animation.duration = 2000;
  
  Ti.API.info('Start Animation: ' + JSON.stringify(animation));
  view.animate(animation);
};

$.index.add(view);
$.index.open();