detect power interruption from J2ME app

Question

I'm involved in yet another application . this time, it's about developing a J2ME application.

the mobile the application will run on is going to be connected to an electrical socket .

and whenever the mobile is unplugged (interruption of electrical energy supply in the battery), the application should detect it and do some custom actions such as send an sms or something else.

so, i want to know what piece of code can I use to detect energy supply interuption in a J2ME app ?

Answer 1

This would have the same answer as your other question on the subject:

The only standard way of doing this is through JSR-256 (either that or it can't be done). You can read the specifications from http://www.jcp.org/en/jsr/detail?id=256

Unfortunately it is very recent and not actually implemented in most retail phones yet.

When it ships, the Sony Ericsson Satio (or Idou) will have it.

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Edit: Since it's now asked in the comments to this reply, the Symbian OS C++ API to check battery status is:

CTelephony::TBatteryInfo

Look it up in the Developer Library documentation at:

http://developer.symbian.com/main/documentation/sdl/symbian94/index.jsp

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Edit: best guess at JSR-256 example code is at http://stackoverflow.com/questions/950172/jsr-256-battery-events/951223#951223

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Edit: Nokia N97 has JSR-256 and it can be installed on Nokia N85 and Nokia 5800.

Answer 2

If its Symbian OS you can use a tsr(spelling?) on the Symbian side and communicate with using jni on the j2me side.