藍牙斷開連接時顯示通知-Android

Question

我正在嘗試創建一個程序，如果藍牙設備突然超出了我的Android設備的范圍，它將向用戶顯示notification 。 我目前有以下代碼，但沒有顯示通知。

我想知道是否有可能不應該使用ACTION_ACL_DISCONNECTED因為我相信bluetooth堆棧會期望請求斷開連接的數據包。 我的要求是，藍牙設備將在沒有警告的情況下斷開連接。

感謝您的協助！

BluetoothNotification.java：//這是創建通知的位置。

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;


public class BluetoothNotification extends Activity
{
public static final int NOTIFICATION_ID = 1;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    /** Define configuration for our notification */
    int icon = R.drawable.logo;
    CharSequence tickerText = "This is a sample notification";
    long when = System.currentTimeMillis();
    Context context = getApplicationContext();
    CharSequence contentTitle = "Sample notification";
    CharSequence contentText = "This notification has been generated as a result of BT Disconnecting";
    Intent notificationIntent = new Intent(this, BluetoothNotification.class);
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

    /** Initialize the Notification using the above configuration */
    final Notification notification = new Notification(icon, tickerText, when);
    notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

    /** Retrieve reference from NotificationManager */

    String ns = Context.NOTIFICATION_SERVICE;
    final NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);


    mNotificationManager.notify(NOTIFICATION_ID, notification);

    finish();
}    
}

OnCreate的代碼段：//位於Controls.java中

IntentFilter filter1 = new IntentFilter(BluetoothDevice.ACTION_ACL_DISCONNECTED);
this.registerReceiver(mReceiver, filter1);

來自Controls.java的代碼段：

private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

        if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
               //Device has disconnected
            NotificationManager nm = (NotificationManager) 
                    getSystemService(NOTIFICATION_SERVICE);
        }

    }

};

Answer 1

您的BroadCastReceiver和您的活動之間有什么聯系？

無需執行此活動，請將所有內容放在廣播接收器中以顯示通知。