Java tutorial
//package com.java2s; /* * Copyright (C) 2016 venshine.cn@gmail.com * * 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.ObjectAnimator; import android.animation.ValueAnimator; import android.view.View; import android.view.animation.AccelerateDecelerateInterpolator; public class Main { public static void breath(View v) { breath(v, 0.0f, 1.0f, 1000); } public static void breath(View v, float fromRange, float toRange, long duration) { ObjectAnimator animator = ObjectAnimator.ofFloat(v, View.ALPHA, fromRange, toRange); animator.setDuration(duration); animator.setRepeatMode(ValueAnimator.REVERSE); animator.setRepeatCount(ValueAnimator.INFINITE); animator.setInterpolator(new AccelerateDecelerateInterpolator()); animator.start(); } }