Cannot change backlight level on Asha 200

[alekmit]

I am writing a book reader for S40. As far as S40 phones don't have interface for backlight level setup, I use DeviceControl.setLights() for decreasing of brightness. It works in SDK 1.1 simulator but not on an actual device (Asha 200). Could anyone help me? Or can I hope that this feature will be fixed in the next firmware realeses? Thank you!

[skalogir]

Hi alekmit and welcome to Nokia's Discussion Boards,

Based on information found here, the setLights method is supported on S60 devices starting from S60 3rd Edition Feature Pack 1. It seems that it is therefore not possible to use it on Asha 200.

[alekmit]

This method is supported under Series 40 according to javadoc and a midlet invoking this method doesn't produce any error\exception. It just does nothing. I can just conclude that this method in asha 200 is just a stub. Also I have read that on some devices from Series 40 setLights() is working.

[skalogir]

javadoc covers classes and packages that are available for both Series 40 and S60. Unfortunately, while some Nokia.UI API classes and methods are available on Series 40, like the FrameAnimator or Gestures, others like the setLights method is only implemented as a stub (not truly supported on Series 40) and that is why you don't get an error or exception.

[alekmit]

Yes, that method is a stub on Asha 200 but not in all every other Series 40 devices. Is it harware restriction on Asha 200? It is very sad.

[skalogir]

I have read that on some devices from Series 40 setLights() is working

Can you specify which Series 40 devices you read this about?

[alekmit]

Can you specify which Series 40 devices you read this about?

It works on my Asha 200! )) I just had to allow application's managed level of light in menu (in root of applications' folder). It seems that this topic is closed! Threre are screnshots from a simulator bellow. It works on Asha 200 device as well.

http://db.tt/8H5hiIN8
http://db.tt/BTc6n0GM
http://db.tt/3NlzfRIG
http://db.tt/ceAkFD7F