Identifying the device type in MIDlets

[varsha gaware]

I want to find out a device type/model/name on which my MIDLet is running. For E.g. BlackBerry or PalmOS etc. Is there any way of doing it ?

[Pearlo Muthukumaran]

Hi Varsha,
There is one way of doing this. Add a functionality to your MIdlet to perform a HTTP Request to the server(HTTP Get or POST). HTTP Header - User Agent Field will contain the Model and Make of the Device.This can be trapped by the receiver servlet / JSP. If the device supports UAProf then it will contain other capabilities information also.
Rgds
Muthu

[David Price]

You should be able to find out the device type by calling

System.getProperty("microedition.platform")

in your MIDlet. Most devices will return a String describing the device (e.g. my Nokia 7210 returns "Nokia7210/4.20").
Unfortunately, not all devices implement this properly - some just return null, others just return "j2me". I don't know about Palm or Blackberry.

[Fred Grott]

Originally posted by David Price:
You should be able to find out the device type by calling

System.getProperty("microedition.platform")

in your MIDlet. Most devices will return a String describing the device (e.g. my Nokia 7210 returns "Nokia7210/4.20").
Unfortunately, not all devices implement this properly - some just return null, others just return "j2me". I don't know about Palm or Blackberry.

David what devices don't implement this? I though all MIDP1.0 compliant devices had to implement this ?

[Liam Quinn]

Motorola and Sony Ericsson phones return null for microedition.platform. Sanyo, Samsung, LG, and MIDP4Palm all return "j2me".
Most phones do not set a User-Agent header with MIDP HttpConnections, so you can't rely on that either.
When I've needed to identify the device, I've used a combination of microedition.platform, the canvas size, and the number of display colours. Unfortunately, it involves some guesswork and isn't very robust, but I've found it satisfactory for my needs.

[varsha gaware]

Hello all,
thanks for your replies..
Finally I did something like this, which returns true on plam and false on blackberry ..
boolean bIsPalm;
Class.forName("com.sun.midp.palm.Info");
bIsPalm = true;
Thanks,
varsha