How to make a J2ME application run in Background?

java java-me midlet midp
Srinivas M.V. picture Srinivas M.V. · Jul 21, 2009 · Viewed 7.1k times · Source

I have a written a J2ME application which uses Bluetooth and search a file within the peer mobile and download it. I would like to make my application run in background , whenever I get a call , or message and later resume after few seconds , Has anybody worked on this please share your experience . Is there any way to run a Midlet in background ?

Answer

Toad picture Toad · Jul 21, 2009

to set a j2me app to the background use the following in your midlet class:

          Display.getDisplay (this).setCurrent (null);

to get the screen back use the following:

          Display.getDisplay (this).setCurrent (myCanvas);

Where myCanvas is your canvas instantiation

R

p.s. You can still use a thread or timer to do things in the background while your midlet is hidden.

p.s.2: this does not work on all models. (Works on Nokia s60, SonyEricsson, but not on Nokia s40, Samsung and some others.

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