从广播接收器获取唤醒锁时的问题

我有个问题。 我正在尝试让广播接收器获取唤醒锁,以便我的闹钟将手机从睡眠模式中唤醒。

在下面的广播接收器中,当“AlarmAlertWakeLock”类被AlarmReceiver调用时,程序崩溃,并在“sCpuWakeLock.acquire()”行中找不到“source not found”;有没有更好的方法来做我想要做什么?

在一个文件中:

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class AlarmReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(final Context context, Intent intent) {
        AlarmAlertWakeLock.acquireCpuWakeLock(context);

    }    
}

在一个单独的文件中:

import android.content.Context;
import android.os.PowerManager;

public class AlarmAlertWakeLock {

    private static PowerManager.WakeLock sCpuWakeLock;

    static void acquireCpuWakeLock(Context context) {

        if (sCpuWakeLock != null) {
            return;
        }
        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);


        sCpuWakeLock = pm.newWakeLock(
                PowerManager.PARTIAL_WAKE_LOCK |
                PowerManager.ACQUIRE_CAUSES_WAKEUP,"okTag");
        sCpuWakeLock.acquire();
    }

    static void releaseCpuLock() {
        if (sCpuWakeLock != null) {
            sCpuWakeLock.release();
            sCpuWakeLock = null;
        }
    }
}

没关系,我想清楚了 - 我需要为清单添加唤醒锁定权限:

使用权限android:name =“android.permission.WAKE_LOCK”

现在正常工作!

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