Java tutorial
/* * Copyright 2016 Hippo Seven * * 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. */ package com.destin.sehaikun; import android.animation.Animator; import android.annotation.TargetApi; import android.os.Build; import android.support.v4.view.animation.FastOutLinearInInterpolator; import android.support.v4.view.animation.FastOutSlowInInterpolator; import android.support.v4.view.animation.LinearOutSlowInInterpolator; import android.view.View; import android.view.ViewAnimationUtils; import android.view.animation.Interpolator; public class AnimationUtils { public static final Interpolator FAST_SLOW_INTERPOLATOR = new LinearOutSlowInInterpolator(); public static final Interpolator SLOW_FAST_INTERPOLATOR = new FastOutLinearInInterpolator(); public static final Interpolator SLOW_FAST_SLOW_INTERPOLATOR = new FastOutSlowInInterpolator(); public static final int ANIMATION_DURATION_SHORT = 150; public static final int ANIMATION_DURATION_MEDIUM = 400; public static final int ANIMATION_DURATION_LONG = 800; @TargetApi(Build.VERSION_CODES.LOLLIPOP) public static void reveal(View view, int centerX, int centerY, float startRadius, float endRadius, Animator.AnimatorListener listener) { Animator animator = ViewAnimationUtils.createCircularReveal(view, centerX, centerY, startRadius, endRadius); animator.setDuration(ANIMATION_DURATION_MEDIUM); if (listener != null) { animator.addListener(listener); } animator.start(); } }