Java tutorial
//package com.java2s; //License from project: Apache License import android.content.Context; import android.view.View; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.view.animation.Transformation; public class Main { private static Animation animation; public static void collapse(final View v) { final int initialHeight = v.getMeasuredHeight(); Animation a = new Animation() { @Override protected void applyTransformation(float interpolatedTime, Transformation t) { if (interpolatedTime == 1) { v.setVisibility(View.GONE); } else { v.getLayoutParams().height = initialHeight - (int) (initialHeight * interpolatedTime); v.requestLayout(); } } @Override public boolean willChangeBounds() { return true; } }; a.setDuration(300); v.startAnimation(a); } public static void startAnimation(Context context, View view, int animID) { animation = AnimationUtils.loadAnimation(context, animID); view.startAnimation(animation); } }