Java tutorial
//package com.java2s; /* * (C) Copyright Itude Mobile B.V., The Netherlands * * 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.Manifest; import android.app.ActivityManager; import android.app.ActivityManager.RunningTaskInfo; import android.content.ComponentName; import android.content.Context; import android.content.pm.PackageManager; import java.util.List; public class Main { /** * Checks if the application is in the background (i.e behind another application's Activity). * * @param context {@link Context} * @return true if another application is above this one. */ public static boolean isApplicationBroughtToBackground(final Context context) { if (context.checkCallingOrSelfPermission(Manifest.permission.GET_TASKS) == PackageManager.PERMISSION_DENIED) return false; ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> tasks = am.getRunningTasks(1); if (!tasks.isEmpty()) { ComponentName topActivity = tasks.get(0).topActivity; if (!topActivity.getPackageName().equals(context.getPackageName()) && !topActivity.getPackageName().equals("com.google.android.voicesearch")) { return true; } } return false; } }