how to animate transition between placeholder and image.

animate transition between placeholder and image

Dev tip: how to animate transition between placeholder and image.

//Create a bitmap drawable from the bitmap to be shown
Drawable bitmapDrawable = new BitmapDrawable(context,bitmap);

Drawable[] layers = new Drawable[] {
         imageView.getDrawable(), //Current placeholder
         bitmapDrawable  //Image to show
 };

TransitionDrawable transitionDrawable = new TransitionDrawable(layers);

imageView.setImageDrawable(transitionDrawable);

int durationMillis = 1000;
transitionDrawable.startTransition(durationMillis);