Java tutorial
//package com.java2s; /* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.animation.Animator; import android.view.View; import android.view.ViewTreeObserver; public class Main { public static void startAnimationAfterNextDraw(final Animator animator, final View view) { view.getViewTreeObserver().addOnDrawListener(new ViewTreeObserver.OnDrawListener() { private boolean mStarted = false; public void onDraw() { if (mStarted) return; mStarted = true; // Use this as a signal that the animation was cancelled if (animator.getDuration() == 0) { return; } animator.start(); final ViewTreeObserver.OnDrawListener listener = this; view.post(new Runnable() { public void run() { view.getViewTreeObserver().removeOnDrawListener(listener); } }); } }); } }