android studio屏幕關閉/鎖屏

Question

當屏幕關閉時，我的掃描儀wifi也關閉。

如何使wifi掃描持續進行？ 我本想打開和關閉屏幕以激活wifi掃描功能，但無法在服務中關閉屏幕

如何在服務中關閉屏幕或鎖定屏幕？

謝謝

Answer 1

AndroidDevelopers上有一個有關如何保持屏幕打開的示例

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);
}
}

這里參考