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/*
* Copyright (C) 2009 The Android Open Source Project
*
* 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.android.batterywaster;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.Bundle;
import android.os.PowerManager;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;
import java.text.DateFormat;
import java.util.Date;
/**
* So you thought sync used up your battery life.
*/
public class BatteryWaster extends Activity {
TextView mLog;
DateFormat mDateFormat;
IntentFilter mFilter;
PowerManager.WakeLock mWakeLock;
SpinThread mThread;
boolean mWasting, mWaking;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set the layout for this activity. You can find it
// in res/layout/hello_activity.xml
setContentView(R.layout.battery_waster);
findViewById(R.id.checkbox).setOnClickListener(mClickListener);
findViewById(R.id.checkbox_wake).setOnClickListener(mWakeClickListener);
mLog = (TextView)findViewById(R.id.log);
mDateFormat = DateFormat.getInstance();
mFilter = new IntentFilter();
mFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
mFilter.addAction(Intent.ACTION_BATTERY_LOW);
mFilter.addAction(Intent.ACTION_BATTERY_OKAY);
mFilter.addAction(Intent.ACTION_POWER_CONNECTED);
PowerManager pm = (PowerManager)getSystemService(POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "BatteryWaster");
mWakeLock.setReferenceCounted(false);
}
@Override
public void onPause() {
super.onPause();
stopRunning();
}
@Override
public void onDestroy() {
super.onDestroy();
if (mWakeLock.isHeld()) {
mWakeLock.release();
}
}
View.OnClickListener mClickListener = new View.OnClickListener() {
public void onClick(View v) {
CheckBox checkbox = (CheckBox)v;
if (checkbox.isChecked()) {
startRunning();
} else {
stopRunning();
}
}
};
View.OnClickListener mWakeClickListener = new View.OnClickListener() {
public void onClick(View v) {
CheckBox checkbox = (CheckBox)v;
if (checkbox.isChecked()) {
mWaking = true;
updateWakeLock();
} else {
mWaking = false;
updateWakeLock();
}
}
};
void startRunning() {
if (!mWasting) {
log("Start");
registerReceiver(mReceiver, mFilter);
mWasting = true;
updateWakeLock();
if (mThread == null) {
mThread = new SpinThread();
mThread.start();
}
}
}
void stopRunning() {
if (mWasting) {
log("Stop");
unregisterReceiver(mReceiver);
mWasting = false;
updateWakeLock();
if (mThread != null) {
mThread.quit();
mThread = null;
}
}
}
void updateWakeLock() {
if (mWasting || mWaking) {
if (!mWakeLock.isHeld()) {
mWakeLock.acquire();
}
} else {
if (mWakeLock.isHeld()) {
mWakeLock.release();
}
}
}
void log(String s) {
mLog.setText(mLog.getText() + "\n" + mDateFormat.format(new Date()) + ": " + s);
}
BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
String title = action;
int index = title.lastIndexOf('.');
if (index >= 0) {
title = title.substring(index + 1);
}
if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
log(title + ": level=" + level);
} else {
log(title);
}
}
};
class SpinThread extends Thread {
private boolean mStop;
public void quit() {
synchronized (this) {
mStop = true;
}
}
public void run() {
while (true) {
synchronized (this) {
if (mStop) {
return;
}
}
}
}
}
}
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