How to cancel group(bundle) notification when group has only one notification?

user_6234386 0
Viewed 2838

Below is the sample activity, has code to create bundle notifications and group. When i click on last notification(when one is remaining) .Group notification does not disappear on consumption of last notification. strong text

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

Button btnBundleNotification, btnSingleNotification;
NotificationManager notificationManager;
int bundleNotificationId = 100;
int singleNotificationId = 100;
NotificationCompat.Builder summaryNotificationBuilder;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    btnBundleNotification = findViewById(R.id.btnBundleNotification);
    btnSingleNotification = findViewById(R.id.btnSingleNotification);
    btnBundleNotification.setOnClickListener(this);
    btnSingleNotification.setOnClickListener(this);
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.btnBundleNotification:


            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                NotificationChannel groupChannel = new NotificationChannel("bundle_channel_id", "bundle_channel_name", NotificationManager.IMPORTANCE_LOW);
                notificationManager.createNotificationChannel(groupChannel);
            }
            bundleNotificationId += 100;
            singleNotificationId = bundleNotificationId;
            String bundle_notification_id = "bundle_notification_" + bundleNotificationId;
            Intent resultIntent = new Intent(this, MainActivity.class);
            resultIntent.putExtra("notification", "Summary Notification Clicked");
            resultIntent.putExtra("notification_id", bundleNotificationId);
            resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
            PendingIntent resultPendingIntent = PendingIntent.getActivity(this, bundleNotificationId, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);


            summaryNotificationBuilder = new NotificationCompat.Builder(this, "bundle_channel_id")
                    .setGroup(bundle_notification_id)
                    .setGroupSummary(true)
                    .setContentTitle("Bundled Notification. " + bundleNotificationId)
                    .setContentText("Content Text for bundle notification")
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentIntent(resultPendingIntent);

            notificationManager.notify(bundleNotificationId, summaryNotificationBuilder.build());

            break;

        case R.id.btnSingleNotification:


            bundle_notification_id = "bundle_notification_" + bundleNotificationId;

            resultIntent = new Intent(this, MainActivity.class);
            resultIntent.putExtra("notification", "Summary Notification Clicked");
            resultIntent.putExtra("notification_id", bundleNotificationId);
            resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
            resultPendingIntent = PendingIntent.getActivity(this, bundleNotificationId, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            //We need to update the bundle notification every time a new notification comes up.
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                if (notificationManager.getNotificationChannels().size() < 2) {
                    NotificationChannel groupChannel = new NotificationChannel("bundle_channel_id", "bundle_channel_name", NotificationManager.IMPORTANCE_LOW);
                    notificationManager.createNotificationChannel(groupChannel);
                    NotificationChannel channel = new NotificationChannel("channel_id", "channel_name", NotificationManager.IMPORTANCE_DEFAULT);
                    notificationManager.createNotificationChannel(channel);
                }
            }
            summaryNotificationBuilder = new NotificationCompat.Builder(this, "bundle_channel_id")
                    .setGroup(bundle_notification_id)
                    .setGroupSummary(true)
                    .setContentTitle("Bundled Notification " + bundleNotificationId)
                    .setContentText("Content Text for group summary")
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentIntent(resultPendingIntent);


            if (singleNotificationId == bundleNotificationId)
                singleNotificationId = bundleNotificationId + 1;
            else
                singleNotificationId++;

            resultIntent = new Intent(this, MainActivity.class);
            resultIntent.putExtra("notification", "Single notification clicked");
            resultIntent.putExtra("notification_id", singleNotificationId);
            resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
            resultPendingIntent = PendingIntent.getActivity(this, singleNotificationId, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);


            NotificationCompat.Builder notification = new NotificationCompat.Builder(this, "channel_id")
                    .setGroup(bundle_notification_id)
                    .setContentTitle("New Notification " + singleNotificationId)
                    .setContentText("Content for the notification")
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setGroupSummary(false)
                    .setContentIntent(resultPendingIntent);

            notificationManager.notify(singleNotificationId, notification.build());
            notificationManager.notify(bundleNotificationId, summaryNotificationBuilder.build());
            break;

    }
}

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

    Bundle extras = intent.getExtras();
    if (extras != null) {
        int notification_id = extras.getInt("notification_id");
        Toast.makeText(getApplicationContext(), "Notification with ID " + notification_id + " is cancelled", Toast.LENGTH_LONG).show();
        notificationManager.cancel(notification_id);
    }
}

}

notifications android
2 Answers

Summary notification will not automatically get cleared when the last notification of that group is consumed. You must clear the summary notification manually yourself.

That means you must keep track of all notifications your apps have created.

private int countForNotificationsInGroup = 0 ;

Increment that value each time you create a new notification of under that summary notification.

Then decrement notification count when each notification is consumed. When the count reaches zero, clear the summary notification.

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

    Bundle extras = intent.getExtras();
    if (extras != null) {
        int notification_id = extras.getInt("notification_id");
        Toast.makeText(getApplicationContext(), "Notification with ID " + notification_id + " is cancelled", Toast.LENGTH_LONG).show();
        notificationManager.cancel(notification_id);

        countForNotificationsInGroup = countForNotificationsInGroup - 1;

        if(countForNotificationsInGroup==0)
        {
           //clear summary notification
           notificationManager.cancelAll();
        }
    }
}

You may like to read more about correctly handling bundled Android notifications here.

user_12859730

What I understood that you want to clear all the notifications from system tray.

You can add following in your onNewIntent() method

NotificationManager nMgr = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            nMgr.cancelAll();

Hopefully It works for you.

user_77270110
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