Делаю так:
В активити при нажатии на кнопку запускаем IntentService сервис.
(Как пользователь перевожу телефон в спячку)
Сервис включает PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP ) (СPU и экран) на время, пока работает onHandleIntent(...).
Не включает. В чем причина?
AndroidManifest.xml
Код: Выделить всё
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.survey.powermanagerservice"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="10" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<application
android:debuggable="true"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.survey.powermanagerservice.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".MyPowerService" android:exported="true"></service>
</application>
</manifest>MainActivity.java
Код: Выделить всё
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
static Button btnStartPowerService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnStartPowerService=(Button) findViewById(R.id.button1);
btnStartPowerService.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Thread.sleep(2*1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Context AppContext = getApplicationContext();
Intent PowerIntent = new Intent(AppContext,MyPowerService.class);
//AppContext.startService(PowerIntent);
MyPowerService.startWIS(AppContext, PowerIntent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
} Код: Выделить всё
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.util.Log;
public class MyPowerService extends IntentService {
private static final String NAME = MyPowerService.class.getName() + ".Lock";
private static volatile WakeLock lockStatic = null;
public MyPowerService() {
super("MyPowerService");
setIntentRedelivery(true);
// TODO Auto-generated constructor stub
}
public MyPowerService(String name) {
super(name);
setIntentRedelivery(true);
// TODO Auto-generated constructor stub
}
synchronized private static PowerManager.WakeLock getLock(Context context) {
if (lockStatic == null) {
PowerManager mgr = (PowerManager) context
.getSystemService(Context.POWER_SERVICE);
lockStatic = mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK |
PowerManager.ACQUIRE_CAUSES_WAKEUP, NAME);
lockStatic.setReferenceCounted(true);
}
return (lockStatic);
}
public static void startWIS(Context ctxt, Intent i) {
getLock(ctxt.getApplicationContext()).acquire();
ctxt.startService(i);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
PowerManager.WakeLock lock = getLock(this.getApplicationContext());
if (!lock.isHeld() || (flags & START_FLAG_REDELIVERY) != 0) {
lock.acquire();
}
super.onStartCommand(intent, flags, startId);
return (START_REDELIVER_INTENT);
}
@Override
protected void onHandleIntent(Intent intent) {
try {
Thread.sleep(10*1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
PowerManager.WakeLock lock = getLock(this.getApplicationContext());
if (lock.isHeld()) lock.release();
}
}
} 
