Notification Service for Blackberry OS 4.5 application

Question

Hi, I am developing an application similar to email application. Whenever new message is received my notification service should indicate change to user...by updating icon, also, the notification service should continuosly listen to server for incoming events.

How do I achieve this?

I am developing in os version 4.5.

Please help.

Thank you.

Answer 1

There is no ApplicationIndicator in RIM OS < 4.6 (see bb forum thread)

you have several options to notify the user (none of them is the indicator, unfortunately). you can:

• play a sound
• trigger the vibration
• trigger a customizable notification (so the user can decide)
• change the application icon
• paint a text on the application icon
• change the application title

how to show notification icon in v4.2 to v4.5 versions

• Play sound with with Alert.startAudio
• Change application icon with HomeScreen.updateIcon
• Change app name with HomeScreen.setName
• Trigger vibration with Alert.startVibrate

And yes, to exchange data between two applications it's better to use GlobalEventListener

Answer 2

Hi,

If ApplicationIndicator is not available to OS 4.5 and lesser versions then how do googleTalk and twitter app can have such feature (message indicator on homescreen similar to new messages and missed call) with these versions.

There should be some other mechanism apart from ApplicationIndicator to implement such feature.

Please suggest.

Thanks, Akash.