pbreault pbreault - 4 months ago 21
Android Question

Android: Reversing an Animation

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?


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 {
    public float getInterpolation(float paramFloat) {
        return Math.abs(paramFloat -1f);

Then on your animation you can set your new interpolator:

myAnimation.setInterpolator(new ReverseInterpolator());