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.*; import java.util.HashSet; import java.util.List; public class Main { static HashSet<Animator> sAnimators = new HashSet<Animator>(); static Animator.AnimatorListener sEndAnimListener = new Animator.AnimatorListener() { public void onAnimationStart(Animator animation) { } public void onAnimationRepeat(Animator animation) { } public void onAnimationEnd(Animator animation) { sAnimators.remove(animation); } public void onAnimationCancel(Animator animation) { sAnimators.remove(animation); } }; public static AnimatorSet createSequentialAnimatorSet(long interval, List<Animator> os) { AnimatorSet result = createAnimatorSet(); if (os != null) { for (Animator o : os) { o.setStartDelay(interval); interval += interval; } result.playTogether(os); } return result; } public static AnimatorSet createAnimatorSet() { AnimatorSet anim = new AnimatorSet(); cancelOnDestroyActivity(anim); return anim; } public static void cancelOnDestroyActivity(Animator a) { sAnimators.add(a); a.addListener(sEndAnimListener); } }