Java tutorial
//package com.java2s; /** * Copyright 2014 Zhenguo Jin (jinzhenguo1990@gmail.com) * <p/> * 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 * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * 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.view.animation.AlphaAnimation; import android.view.animation.Animation.AnimationListener; public class Main { public static final long DEFAULT_ANIMATION_DURATION = 400; public static AlphaAnimation getShowAlphaAnimation(long durationMillis, AnimationListener animationListener) { return getAlphaAnimation(0.0f, 1.0f, durationMillis, animationListener); } public static AlphaAnimation getShowAlphaAnimation(long durationMillis) { return getAlphaAnimation(0.0f, 1.0f, durationMillis, null); } public static AlphaAnimation getShowAlphaAnimation(AnimationListener animationListener) { return getAlphaAnimation(0.0f, 1.0f, DEFAULT_ANIMATION_DURATION, animationListener); } public static AlphaAnimation getShowAlphaAnimation() { return getAlphaAnimation(0.0f, 1.0f, DEFAULT_ANIMATION_DURATION, null); } public static AlphaAnimation getAlphaAnimation(float fromAlpha, float toAlpha, long durationMillis, AnimationListener animationListener) { AlphaAnimation alphaAnimation = new AlphaAnimation(fromAlpha, toAlpha); alphaAnimation.setDuration(durationMillis); if (animationListener != null) { alphaAnimation.setAnimationListener(animationListener); } return alphaAnimation; } public static AlphaAnimation getAlphaAnimation(float fromAlpha, float toAlpha, long durationMillis) { return getAlphaAnimation(fromAlpha, toAlpha, durationMillis, null); } public static AlphaAnimation getAlphaAnimation(float fromAlpha, float toAlpha, AnimationListener animationListener) { return getAlphaAnimation(fromAlpha, toAlpha, DEFAULT_ANIMATION_DURATION, animationListener); } public static AlphaAnimation getAlphaAnimation(float fromAlpha, float toAlpha) { return getAlphaAnimation(fromAlpha, toAlpha, DEFAULT_ANIMATION_DURATION, null); } }