Create an icon for a custom message

You can associate icons with a custom message. You associate an icon with a custom message's type and status. For example, you can associate one icon with an unopened message and a different icon with an opened message. The icon appears on the left side of a message in the Messages application.
  1. Import the required classes and interfaces.
    import net.rim.blackberry.api.messagelist.*;
    import net.rim.device.api.system.EncodedImage;
  2. Invoke EncodedImage.getEncodedImageResource() to create an icon based on an encoded image. Pass in the file name as an argument.
    ApplicationIcon newIcon = 
       new ApplicationIcon( EncodedImage.getEncodedImageResource( "ml_sample_new.png" ) );
    ApplicationIcon openedIcon = 
       new ApplicationIcon( EncodedImage.getEncodedImageResource( "ml_sample_opened.png" ) );
  3. Invoke ApplicationMessageFolderRegistry.registerMessageIcon() to assign a status and an icon to a custom message. Specify the following as arguments: a value for the message type for a BlackBerry® device application, a message status by using a field from the ApplicationMessage.Status interface, and an instance of the ApplicationIcon class.
    int MESSAGE_TYPE = 0;
    int STATUS_NEW = ApplicationMessage.Status.UNOPENED;
    int STATUS_OPENED = ApplicationMessage.Status.OPENED;
    reg.registerMessageIcon( MESSAGE_TYPE, STATUS_NEW, newIcon );
    reg.registerMessageIcon( MESSAGE_TYPE, STATUS_OPENED, openedIcon );

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