PowerManager.PARTIAL_WAKE_LOCK android

我很困惑是否要获取这个唤醒锁。例如。我有这种类型的代码，是从onReceive() of a BroadcastReceiever（CONNECTIVITY_CHANGE、BOOT_COMPLETED 等）异步地即我正在启动一个IntentService from onReceive()执行繁重的工作。

private static void insertInDatabase(Context context /*, some data to be inserted in database*/) {
        Database helper = Database.getInstance(context);
        PowerManager pm = (PowerManager) context
            .getSystemService(Context.POWER_SERVICE);
        final WakeLock wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, wakelockName); 
        wakeLock.acquire();
        try { 
            SQLiteDatabase db = helper.getWritableDatabase();
            ContentValues cv = new ContentValues();
            // insert data in database here  
        } finally {
            wakeLock.release();
        }
    }

这种情况是否适合购买PowerManager.PARTIAL_WAKE_LOCK?

@paha 的回答忽略了重要的一点：IntentService 还不够。之间onReceive()结束并且 IntentService 启动后，手机可能会再次进入睡眠状态。您需要一个（静态）锁来弥补这个差距 - 这是在 Mark Murpphy 中实现的WakefulIntentService https://github.com/commonsguy/cwac-wakeful

因此，保留 AlarmManager 和接收器，但启动一个WakefulIntentService从你的onReceive().

See:

• Android 深度睡眠和唤醒锁 https://stackoverflow.com/questions/12417541/android-deep-sleep-and-wake-locks/16268293#16268293
• PowerManager 唤醒锁无法将设备从服务中唤醒 https://stackoverflow.com/questions/17471028/powermanager-wakelock-not-waking-device-up-from-service/17496029#17496029