1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.fakeoemfeatures; 18 19 import static android.view.Display.DEFAULT_DISPLAY; 20 import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY; 21 22 import android.app.Dialog; 23 import android.app.Service; 24 import android.content.Context; 25 import android.content.Intent; 26 import android.graphics.Rect; 27 import android.hardware.display.DisplayManager; 28 import android.os.Handler; 29 import android.os.IBinder; 30 import android.os.Message; 31 import android.view.Display; 32 import android.view.ViewGroup; 33 import android.view.WindowManager; 34 35 import java.util.ArrayList; 36 import java.util.Random; 37 38 public class FakeBackgroundService extends Service { 39 final ArrayList<int[]> mAllocs = new ArrayList<int[]>(); 40 41 final Random mRandom = new Random(); 42 43 static final long TICK_DELAY = 30*1000; // 30 seconds 44 static final int MSG_TICK = 1; 45 final Handler mHandler = new Handler() { 46 @Override public void handleMessage(Message msg) { 47 switch (msg.what) { 48 case MSG_TICK: 49 // We are awesome! To prove we are doing awesome stuff, 50 // we must use some memory! It wouldn't be awesome if 51 // we didn't use memory! 52 for (int i=0; i<5; i++) { 53 try { 54 int[] alloc = new int[FakeApp.PAGE_SIZE/4]; 55 mAllocs.add(alloc); 56 final int VAL = mRandom.nextInt(); 57 for (int j=0; j<FakeApp.PAGE_SIZE/4; j++) { 58 alloc[j] = VAL; 59 } 60 } catch (OutOfMemoryError e) { 61 } 62 } 63 sendEmptyMessageDelayed(MSG_TICK, TICK_DELAY); 64 break; 65 default: 66 super.handleMessage(msg); 67 break; 68 } 69 } 70 }; 71 onCreate()72 @Override public void onCreate() { 73 super.onCreate(); 74 mHandler.sendEmptyMessageDelayed(MSG_TICK, TICK_DELAY); 75 76 final DisplayManager dm = getSystemService(DisplayManager.class); 77 final Display display = dm.getDisplay(DEFAULT_DISPLAY); 78 final Context windowContext = createDisplayContext(display) 79 .createWindowContext(TYPE_APPLICATION_OVERLAY, null /* options */); 80 81 // Make a fake window that is always around eating graphics resources. 82 FakeView view = new FakeView(windowContext); 83 Dialog dialog = new Dialog(windowContext, android.R.style.Theme_Holo_Dialog); 84 dialog.getWindow().setType(TYPE_APPLICATION_OVERLAY); 85 dialog.getWindow().setFlags( 86 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE 87 | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE 88 | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS 89 | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED, 90 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE 91 | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE 92 | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS 93 | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED 94 | WindowManager.LayoutParams.FLAG_DIM_BEHIND); 95 dialog.getWindow().setDimAmount(0); 96 dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, 97 ViewGroup.LayoutParams.MATCH_PARENT); 98 WindowManager.LayoutParams lp = dialog.getWindow().getAttributes(); 99 // Create an instance of WindowManager that is adjusted to the area of the display dedicated 100 // for windows with type TYPE_APPLICATION_OVERLAY. 101 final WindowManager wm = windowContext.getSystemService(WindowManager.class); 102 Rect maxWindowBounds = wm.getMaximumWindowMetrics().getBounds(); 103 int maxSize = Math.max(maxWindowBounds.width(), maxWindowBounds.height()); 104 maxSize *= 2; 105 lp.x = maxSize; 106 lp.y = maxSize; 107 lp.setTitle(getPackageName() + ":background"); 108 dialog.getWindow().setAttributes(lp); 109 dialog.getWindow().setContentView(view); 110 dialog.show(); 111 } 112 onDestroy()113 @Override public void onDestroy() { 114 super.onDestroy(); 115 mHandler.removeMessages(MSG_TICK); 116 } 117 onBind(Intent intent)118 @Override public IBinder onBind(Intent intent) { 119 return null; 120 } 121 } 122