Android View Collapser Utility

gistfile1.txt

package com.eski.android_utils.view.animations;

import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.Transformation;

public class ViewCollapser {

    public static void collapse(final View view, Animation.AnimationListener listener) {
        final int initialHeight = view.getMeasuredHeight();
        Animation anim = new Animation() {
            @Override protected void applyTransformation(float interpolatedTime, Transformation t) {
                if(interpolatedTime == 1){
                    view.setVisibility(View.GONE);
                    view.getLayoutParams().height = initialHeight;
                    view.getParent().requestLayout();
                } else {
                    view.getLayoutParams().height = initialHeight - (int)(initialHeight * interpolatedTime);
                    view.requestLayout();
                }
            }
            @Override public boolean willChangeBounds() { return true; }
        };
        anim.setAnimationListener(listener);
        anim.setDuration(600);
        anim.setInterpolator(new AccelerateInterpolator(5f));
        view.startAnimation(anim);
    }



}