Is it possible to have an animated drawable?

Question

Is it possible to create a drawable that has some sort of animation, whether it is a frame by frame animation, rotation, etc, that is defined as a xml drawable and can be re

Answer 1

I take back to life this post just to post my solution with vector drawable:

So you need 1 vector drawable in drawable resource (@drawable/ic_brush_24dp):

      <--- propertyName of animator
        
    

Then you need your animator in animator resource folder (@animator/pendulum)

Then you need your animated-vector in drawable resource (@drawable/test_anim_brush2):

Then you need to extend ImageView (because that's the only way i found to start the animation)

public class ImageView extends AppCompatImageView{
    public ImageView(Context context){
        super(context);
        init(context, null, 0);
    }
    public ImageView(Context context, AttributeSet attrs){
        super(context, attrs);
        init(context, attrs, 0);
    }
    public ImageView(Context context, AttributeSet attrs, int defStyleAttr){
        super(context, attrs, defStyleAttr);
        init(context, attrs, 0);
    }
    private void init(Context context, AttributeSet attrs, int defStyleAttr){

    }
@Override
protected void onAttachedToWindow(){
    super.onAttachedToWindow();
    Drawable d = getBackground();
    if(d instanceof AnimatedVectorDrawable){
        AnimatedVectorDrawable anim = (AnimatedVectorDrawable)d;
        anim.start(); 
    }        
}
@Override
protected void onDetachedFromWindow(){
    super.onDetachedFromWindow();
    Drawable d = getBackground();
    if(d instanceof AnimatedVectorDrawable){
        AnimatedVectorDrawable anim = (AnimatedVectorDrawable)d;
        anim.stop();
    }
}
}

And then add your imageView to your layout :

Pro :

• You can fully define your animation in xml with object animator (duration, interpolator, etc...)
• Works with everything which accept drawable (as long as you add at good place the start animator)

Con:

• Works only with vector
• Still need to add your custom start by extending class or whenever you think it is smart...