Stand-by apps (aka active wallpapers)

One of Sony Ericssons best kept secrets..

Since JP-7 phones you can set a Java ME application as your wallpaper or "stand-by" screen. This is the screen you typically see when your phone is idle.

Any Java ME application can be set as a stand-by app but since it is running as a wallpaper it needs to start quickly, do something fast and require no interaction.
You can try it yourself by simply adding the line "SEMC-StandbyApplication: Y" to the JAD file and installing the application.

I came across Andreas Gustafssons demo projects which are all about writing tight code for limited resource environments.. take a look at the "Proof of Concept 4K" as a good example of what can be done.

Andreas has prepared some stand-by app examples for SE Labs which will be up and coming at http://labs.sonyericsson.com/persons/andreas-gustafsson

You can find out more technical info on developing stand-by apps @ http://developer.sonyericsson.com/site/global/techsupport/tipstrickscode...