BlackBerry: Do I need to sign the build of each resolution separately?

Question

I have developed a BlackBerry app using JRE 4.5 for multiple resolutions. I have got the ordered keys for signing the build. I need to know do I need to order and sign the build individually for all the build of different resolutions or just need to sign the build of any one resolution and change the resolution folder for respective build and do Project-> Build Project in Eclipse for different resolutions ?

Answer 1

You must sign each time. So change the assets folder, and build and sign and save, and then repeat the process.

There are alternatives you might consider:

1. include all the assets and choosing the correct one at run time
2. include the highest resolution image and scale the assets at run time.

Using either of these approaches you would require only one build, which makes everyone's life a lot easier.

Update, just thought of another alternative. Have a simple program with basic assets and download the correct assets for your device the first time the app is run. If these are large, the SD Card would be a good place for them.

Clarification

You use the same set of keys for all applications you build, they identify you as the developer, rather than being specific to one application. But you must sign every build that you plan to distribute.