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Android Intents and Broadcast Receivers Local Notifications Creating a Local Notification

Posted by Patrick Munemo
Patrick Munemo
14,892 Points

Intents and broadcast recievers

Next we'll need a NotificationManager variable to send our local notification. Set it using the system service Context.NOTIFICATION_SERVICE.

DistressCallReceiver.java 
public class DistressCallReceiver extends BroadcastReceiver {
  private NotificationManager mNotificationManager;
  private static final int NOTIFICATION_ID = 22;

    @Override
    public void onReceive(Context context, Intent intent) {
        // Add your code here!
       Notification.Builder notif = new Notification.Builder(context);
        notif.setSmallIcon(R.drawable.ic_distress);
        notif.setContentTitle("Incoming Distress Signal");
        notif.setContentText("A distress call has been received from somewhere in space and time.");
        Notification notification = notif.build();
        mNotificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);  
        mNotificationManager.notify(NOTIFICATION_ID, notif.build());

    }
}

2 Answers

Joshua Douce
Joshua Douce
13,120 Points
Joshua Douce
Joshua Douce
13,120 Points

Hi Patrick, the line mNotificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE); needs to be mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

This had me stumped for a long time!

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi Patrick,

You want to call the method getSystemService on the context that is passed into the onReceive method. Use dot notation.

I'll check to see if the rest of the code you added is essential or if this can be trimmed a little.

Steve.

Steve Hunter
Steve Hunter
57,712 Points

Hi Patrick,

You can do without creating the member variable; just create a local one within the onReceive method's scope. Same with the ID - there's no need for the constant but neither of those things prevent your code from passing the challenge.

Your key error is not using the context (lowecase) to call the getSystemService() method on.

Let me know how you get on.

Steve.