@SystemService
PowerManager powerManager;

public void foo()
{
    PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);

    wakeLock.acquire();
    doSomething();
    wakeLock.release();
}

@WakeLock(level = WakeLockLevel.PARTIAL_WAKE_LOCK)
public void foo()
{
    doSomething();
}