Question

目前正在使用BroadcastReceiver构建一个Android应用程序，它是一个扫描唯一SSID的WifiDetection应用程序，我的通知工作正常，但总是每1秒触发一次（这很烦人），我希望它延迟15分钟或30分钟。这是我的一些代码。我使用过Thread.sleep（）和处理程序，但它会减慢并崩溃我的应用程序

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}

public class WifiReceiver extends BroadcastReceiver {

private void receiveNotification(Context context, String ssid) {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
    Intent intent = new Intent(context, MainActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(context, 1001, intent, PendingIntent.FLAG_CANCEL_CURRENT);
    builder.setSmallIcon(R.drawable.wifilogosmaller);
    builder.setContentTitle("Free " + ssid + ", Click for more info");
    builder.setContentText("Wifi.com.ng services avaliable ");
    builder.setAutoCancel(true);
    builder.setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.wifilogosmaller));
    builder.setSubText("Tap to view");
    builder.setContentIntent(pendingIntent);
    builder.setVisibility(Notification.VISIBILITY_PUBLIC);
    Notification notification = builder.build();
    NotificationManager mgr = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
    mgr.notify(1001, notification);

提前致谢...

Answer 1

 @Override
public void onReceive( Context context, Intent intent)
    {
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(); 

 if(!prefs.getBoolean("isNotificationFired", false))
   {
    receiveNotification(Context context, "My unique SSID") 
    prefs.edit().putBoolean("isNotificationFired", true).commit();
    //start service here
    Intent intent=new Intent(context, MyService.class);
    context.startService(intent);     
  }
  }

private void receiveNotification(Context context, String ssid) {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
    Intent intent = new Intent(context, MainActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(context, 1001, intent, PendingIntent.FLAG_CANCEL_CURRENT);
    builder.setSmallIcon(R.drawable.wifilogosmaller);
    builder.setContentTitle("Free " + ssid + ", Click for more info");
    builder.setContentText("Wifi.com.ng services avaliable ");
    builder.setAutoCancel(true);
    builder.setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.wifilogosmaller));
    builder.setSubText("Tap to view");
    builder.setContentIntent(pendingIntent);
    builder.setVisibility(Notification.VISIBILITY_PUBLIC);
    Notification notification = builder.build();
    NotificationManager mgr = (NotificationManager) 
    context.getSystemService(NOTIFICATION_SERVICE);
    mgr.notify(1001, notification);
}

制作自己的服务，这将改变15分钟后保存在pref中的布尔值“isNotificationFired”的状态......

public class MyService extends Service {
    private final LocalBinder mBinder = new LocalBinder();
    protected Handler handler;

    public class LocalBinder extends Binder {
        public MyServicegetService() {
            return MyService.this;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    @Override
    public void onCreate() {
        super.onCreate();

    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        handler = new Handler();
        handler.postDelayed(runnable, 15*60*1000);//**15 min(time in millisecond)**
        return Service.START_STICKY;
    }

    Runnable runnable = new Runnable() {
        @Override
        public void run() {

         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(); 
         prefs.edit().putBoolean("isNotificationFired", true).commit();

        }
    };

如何延迟NofificationManager在Android中每15分钟触发一次

1 个答案: