CODEWITHSUNDEEP
androidandroid-notifications
user12707
user12707

Reputation: 304

Notification not being shown on Android

I'm building a simple application whose purpose is to show a notification as soon as the app is launched.

Following the steps described by the Android's documentation, I wrote a method named createNotification, which sets up the notification, and inserted a call to that method into onCreate method, which is called few moments after the application is launched, I suppose.

Nevertheless, no notification shows up when the application is launched. I'm wondering what is wrong with the code.

public class MainActivity extends ActionBarActivity {
    // ...

    protected void onCreate(Bundle savedInstanceState) {
        // ...

        createNotification();
    }

    private void createNotification() {

        NotificationCompat.Builder builder =
                new NotificationCompat.Builder(this)
        .setContentTitle("My notification")
        .setContentText("Hello World!")
        .setAutoCancel(true)
        .setWhen(System.currentTimeMillis())
        .setVisibility(Notification.VISIBILITY_PUBLIC); 

        Intent resultIntent = new Intent(this, MainActivity.class);

        PendingIntent resultPendingIntent = 
                PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        builder.setContentIntent(resultPendingIntent);

        ((NotificationManager) getSystemService(NOTIFICATION_SERVICE)).notify(1, builder.build());

    }

}

Upvotes: 3

Views: 84

Answers (1)

Tim
Tim

Reputation: 43314

See the docs

Required notification contents

A Notification object must contain the following:

  • A small icon, set by setSmallIcon()
  • A title, set by setContentTitle()
  • Detail text, set by setContentText()

If you add a smallIcon, for example android.R.drawable.ic_dialog_alert it will work (I tested this just now). You can of course also add an icon of your own, but I used this because it is a builtin so easy for examples.

So like this

NotificationCompat.Builder builder =
        new NotificationCompat.Builder(this)
                .setContentTitle("My notification")
                .setContentText("Hello World!")
                .setAutoCancel(true)
                .setSmallIcon(android.R.drawable.ic_dialog_alert) // Add this line
                .setWhen(System.currentTimeMillis())
                .setVisibility(Notification.VISIBILITY_PUBLIC);

I must say that I find it weird it doesn't show an error or anything when you don't add a smallIcon.

Upvotes: 3

Related Questions