android - Reversing an Animation

Question

I have an ImageView that gets animated when it is added to a layout. When it is removed, I want to reverse the same animation.

Is there a way to reverse an animation in android without recoding it and reversing the parameters?

Answer 1

No, sadly you cannot do it with the Animation object. But you can simulate it using an interpolator that will inverse the animation:

package com.example.android;

import android.view.animation.Interpolator;

public class ReverseInterpolator implements Interpolator {
    @Override
    public float getInterpolation(float paramFloat) {
        return Math.abs(paramFloat -1f);
    }
}

Then on your animation you can set your new interpolator:

myAnimation.setInterpolator(new ReverseInterpolator());