我有一个等待摇动的前台服务。当它收到该 Action 时,它会发出一个广播:
Intent i = new Intent("com.company.app.shakeDetectedMessage");
sendBroadcast(i);
我的主要 Activity 通过实现该方法的广播接收器接收此信息:
@Override
public void onReceive(Context context, Intent intent)
{
MainActivity.this.turnOnScreen();
Toast.makeText(getApplicationContext(), "Screen ON", Toast.LENGTH_SHORT).show();
}
还有我的点亮方法:
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
我有部分唤醒锁
PowerManager pm = (PowerManager)getSystemService(POWER_SERVICE);
PowerManager.WakeLock mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "SensorRead");
mWakeLock.acquire();
在服务中声明
然而,当我关闭屏幕并摇晃时,屏幕并没有打开!我验证了每种方法都在使用日志。即使屏幕关闭,onReceive 也能正常工作。广播正在工作。只是屏幕打不开!
最佳答案
调用WakeLocker类的acquire方法
类:
public abstract class WakeLocker {
private static PowerManager.WakeLock wakeLock;
public static void acquire(Context context) {
if (wakeLock != null) wakeLock.release();
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK |
PowerManager.ACQUIRE_CAUSES_WAKEUP |
PowerManager.ON_AFTER_RELEASE, "WakeLock");
wakeLock.acquire();
}
public static void release() {
if (wakeLock != null) wakeLock.release(); wakeLock = null;
}
}
需要权限:
<uses-permission android:name="android.permission.WAKE_LOCK" />
关于java - Android 中的唤醒锁无法打开屏幕,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27284794/