Application Icons

When an application has new information requiring user attention, such as missed calls or new messages, it has a number in the upper-right corner of the application icon. This number is called a badge. For example, when a new message is received, the badge appears on the application icon. The badge remains until the user reads the message.

This feature is supported in mobile and wearable applications only.

Figure: Badge

Badge

The main features of the Badge API include:

Prerequisites

To use the Badge API (in mobile and wearable applications), the application has to request permission by adding the following privilege to the config.xml file:

<tizen:privilege name="http://tizen.org/privilege/notification"/>

Manage badges

Getting and setting the badge number is a useful UI management skill, follow these steps to get and set the badge number:

  1. Retrieve application identifier using the getCurrentApplication() method:

    var appId = tizen.application.getCurrentApplication().appInfo.id;

  2. To check the badge number of the current application, use the getBadgeCount() method of the BadgeManager interface (in mobile and wearable applications):

    var count = tizen.badge.getBadgeCount(appId);
console.log('Badge count of ' + appId + ' is ' + count);

  3. To change the badge of the current application, use the setBadgeCount() method:

    var appId = tizen.application.getCurrentApplication().appInfo.id;
tizen.badge.setBadgeCount(appId, 82);

  4. To hide the badge of the current application, use the setBadgeCount() method to set the number to 0:

    tizen.badge.setBadgeCount(appId, 0);

Receive notifications on badge changes

Registering a listener for badge count changes to react to new badges and display your badges is a useful UI management skill:

  1. To register an event handler for receiving a notification about badge changes, use the addChangeListener() method of the BadgeManager interface (in mobile and wearable applications), specifying a list of application IDs:

    function watcher(appId, count) {
    console.log(appId + ' badge number were updated: ' + count);
}

tizen.badge.addChangeListener(['BDb5tZJe47.TestSample'], watcher);

    BDb5tZJe47.TestSample is the application ID of the application to monitor. The first argument of the addChangeListener() method is an array of application identifiers. This allows you to bind the listener to several applications at same time.

  2. To stop receiving notifications about badge changes, use the removeChangeListener() method:

    tizen.badge.removeChangeListener(['BDb5tZJe47.TestSample']);
  • Dependencies
    • Tizen 2.4 and Higher for Mobile
    • Tizen 2.3.1 and Higher for Wearable
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