1 /* 2 * Copyright (C) 2009 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.batterywaster; 18 19 import android.app.Activity; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.os.BatteryManager; 25 import android.os.Bundle; 26 import android.os.PowerManager; 27 import android.view.View; 28 import android.view.WindowManager; 29 import android.widget.CheckBox; 30 import android.widget.TextView; 31 32 import java.text.DateFormat; 33 import java.util.Date; 34 35 /** 36 * So you thought sync used up your battery life. 37 */ 38 public class BatteryWaster extends Activity { 39 TextView mLog; 40 DateFormat mDateFormat; 41 IntentFilter mFilter; 42 PowerManager.WakeLock mPartialWakeLock; 43 SpinThread mThread; 44 45 boolean mWasting, mWaking; 46 47 @Override onCreate(Bundle savedInstanceState)48 public void onCreate(Bundle savedInstanceState) { 49 super.onCreate(savedInstanceState); 50 51 // Set the layout for this activity. You can find it 52 // in res/layout/hello_activity.xml 53 setContentView(R.layout.battery_waster); 54 55 findViewById(R.id.checkbox).setOnClickListener(mClickListener); 56 findViewById(R.id.checkbox_wake).setOnClickListener(mWakeClickListener); 57 mLog = (TextView)findViewById(R.id.log); 58 59 mDateFormat = DateFormat.getInstance(); 60 61 mFilter = new IntentFilter(); 62 mFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 63 mFilter.addAction(Intent.ACTION_BATTERY_LOW); 64 mFilter.addAction(Intent.ACTION_BATTERY_OKAY); 65 mFilter.addAction(Intent.ACTION_POWER_CONNECTED); 66 67 PowerManager pm = (PowerManager)getSystemService(POWER_SERVICE); 68 mPartialWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "BatteryWaster"); 69 mPartialWakeLock.setReferenceCounted(false); 70 } 71 72 @Override onResume()73 public void onResume() { 74 super.onResume(); 75 if (((CheckBox)findViewById(R.id.checkbox)).isChecked()) { 76 startRunning(); 77 } 78 if (((CheckBox)findViewById(R.id.checkbox_wake)).isChecked()) { 79 mWaking = true; 80 updateWakeLock(); 81 } 82 } 83 84 @Override onDestroy()85 public void onDestroy() { 86 super.onDestroy(); 87 stopRunning(); 88 if (mPartialWakeLock.isHeld()) { 89 mPartialWakeLock.release(); 90 } 91 } 92 93 View.OnClickListener mClickListener = new View.OnClickListener() { 94 public void onClick(View v) { 95 CheckBox checkbox = (CheckBox)v; 96 if (checkbox.isChecked()) { 97 startRunning(); 98 } else { 99 stopRunning(); 100 } 101 } 102 }; 103 104 View.OnClickListener mWakeClickListener = new View.OnClickListener() { 105 public void onClick(View v) { 106 CheckBox checkbox = (CheckBox)v; 107 if (checkbox.isChecked()) { 108 mWaking = true; 109 updateWakeLock(); 110 } else { 111 mWaking = false; 112 updateWakeLock(); 113 } 114 } 115 }; 116 startRunning()117 void startRunning() { 118 if (!mWasting) { 119 log("Start"); 120 registerReceiver(mReceiver, mFilter); 121 mWasting = true; 122 updateWakeLock(); 123 if (mThread == null) { 124 mThread = new SpinThread(); 125 mThread.start(); 126 } 127 } 128 } 129 stopRunning()130 void stopRunning() { 131 if (mWasting) { 132 log("Stop"); 133 unregisterReceiver(mReceiver); 134 mWasting = false; 135 updateWakeLock(); 136 if (mThread != null) { 137 mThread.quit(); 138 mThread = null; 139 } 140 } 141 } 142 updateWakeLock()143 void updateWakeLock() { 144 if (mWasting) { 145 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 146 } else { 147 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 148 } 149 if (mWaking) { 150 if (!mPartialWakeLock.isHeld()) { 151 mPartialWakeLock.acquire(); 152 } 153 } else { 154 if (mPartialWakeLock.isHeld()) { 155 mPartialWakeLock.release(); 156 } 157 } 158 } 159 log(String s)160 void log(String s) { 161 mLog.setText(mLog.getText() + "\n" + mDateFormat.format(new Date()) + ": " + s); 162 } 163 164 BroadcastReceiver mReceiver = new BroadcastReceiver() { 165 public void onReceive(Context context, Intent intent) { 166 String action = intent.getAction(); 167 String title = action; 168 int index = title.lastIndexOf('.'); 169 if (index >= 0) { 170 title = title.substring(index + 1); 171 } 172 if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { 173 int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1); 174 log(title + ": level=" + level); 175 } else { 176 log(title); 177 } 178 } 179 }; 180 181 class SpinThread extends Thread { 182 private boolean mStop; 183 quit()184 public void quit() { 185 synchronized (this) { 186 mStop = true; 187 } 188 } 189 run()190 public void run() { 191 while (true) { 192 synchronized (this) { 193 if (mStop) { 194 return; 195 } 196 } 197 } 198 } 199 } 200 } 201 202 203