Blackberry - App does not launch after signature

Question

Am facing an unusual problem on blackberry, after i have signed my app with the 3 keys and say "load onto device" via Eclipse Java Plugin for Blackberry - the app loads successfully on the device, but when i click on it to launch it - does not open up, nor even a error or a dialog pops up. Please Help - Cant find a solution for this!

Answer 1

I have often had this issue using the 9800 device. After loading apps to the device it starts "not launching". If you go to options -> application manager -> your app's permissions you might see some permissions as custom. Setting these to "allow" fixes it. After a while it stopped launching even when allowed, deleting the app and letting the device reboot fixes it.

This is my personal experience, I don't know what the official bug/fix is

Answer 2

Implement logging in your application. Log every step on the application startup and write log to a text file, located on device SD Card.

When your application has been installed and you have tried to launch it, check this text file to find out, what is going wrong with your application.

Also there is internal logging mechanism, you may employ it, instead of logging to text file.

From my point of view internal log is more suitable for simple logging purposes. If you want complex logging, then text file located on SDCard is preferred.

Answer 3

Try to start the app, then check the device event log. To open the event log viewer, hold 'Alt' and then press L,G,L,G. You will likely see an error explaining the problem in the event log viewer.