Java tutorial
//package com.java2s; /* * Jitsi, the OpenSource Java VoIP and Instant Messaging client. * * Copyright @ 2015 Atlassian Pty Ltd * * 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.graphics.drawable.*; import android.view.*; import android.view.View.OnTouchListener; public class Main { public static void setOnTouchBackgroundEffect(View view) { view.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (!(v.getBackground() instanceof TransitionDrawable)) return false; TransitionDrawable transition = (TransitionDrawable) v.getBackground(); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: transition.startTransition(500); break; case MotionEvent.ACTION_HOVER_EXIT: case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: transition.reverseTransition(500); break; } return false; } }); } }