Android设置系统休眠

public boolean goToSleep() {
	PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);
	try {
		Method method = pm.getClass().getMethod("goToSleep", Long.TYPE);
		method.invoke(pm, SystemClock.uptimeMillis());
		return true;
	} catch (Exception e) {
		e.printStackTrace();
	}
	return false;
}

<uses-permission android:name="android.permission.DEVICE_POWER" />

android:sharedUserId="android.uid.system"//并使用系统签名