android studio屏幕关闭/锁屏

Question

当屏幕关闭时，我的扫描仪wifi也关闭。

如何使wifi扫描持续进行？ 我本想打开和关闭屏幕以激活wifi扫描功能，但无法在服务中关闭屏幕

如何在服务中关闭屏幕或锁定屏幕？

谢谢

Answer 1

AndroidDevelopers上有一个有关如何保持屏幕打开的示例

public class MyIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public MyIntentService() {
    super("MyIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
    Bundle extras = intent.getExtras();
    // Do the work that requires your app to keep the CPU running.
    // ...
    // Release the wake lock provided by the WakefulBroadcastReceiver.
    MyWakefulReceiver.completeWakefulIntent(intent);
}
}

这里参考