如何在接收器中发出通知

Question

我有以下代码在网络状态发生变化时发出通知。 但当我改变网络状态时，应用程序停止工作！ 请帮我做通知。

我确定问题出在addMyNotification函数中。但不知道如何解决它。

public class MyReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent broadcast) {
    addMyNotification("hi","hello",1,context);
}





private void addMyNotification(String title,String message,int id ,Context context ) {
    NotificationCompat.Builder builder =
            new NotificationCompat.Builder(context)
                    .setContentTitle(title)
                    .setContentText(message)
                    .setAutoCancel(true);

    Intent notificationIntent = new Intent(context, SendFood.class);
    PendingIntent contentIntent = PendingIntent.getActivity(context, id, notificationIntent,
            PendingIntent.FLAG_UPDATE_CURRENT);
    builder.setContentIntent(contentIntent);

    // Add as notification
    NotificationManager manager = (NotificationManager) context.getSystemService(Service.NOTIFICATION_SERVICE);
   manager.notify(id, builder.build());
}