Categories: Known Issue | Java ME | MIDP 2.0 | S60 3rd Edition | S60 3rd Edition, Feature Pack 1 | Connectivity | Bluetooth API (JSR-82)

This page was last modified 11:35, 4 March 2008.

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This known issue was originally created by Alanbur and has been verified by Forum Nokia.

Overview

The LocalDevice.isPowerOn() method is missing from the Bluetooth API (JSR-82) implementation in S60 3rd Edition and S60 3rd Edition, FP1 devices.

Description

The LocalDevice.isPowerOn() method is part of JSR-82. The method is, however, missing from the API implementations in S60 3rd Edition and S60 3rd Edition, FP1 devices. This method was added in the maintenance release of the API, BT API 1.1.

How to reproduce

Use LocalDevice.isPowerOn() in your code:

       try {
           LocalDevice ld = LocalDevice.getLocalDevice();
           boolean power = ld.isPowerOn();
       } catch (BluetoothStateException ex) {
           ex.printStackTrace();
       } 

This will throw a java.lang.Error.

Solution

In devices compliant with the MSA Subset (JSR-248), that is S60 3rd Edition FP2 and newer devices, the version of the Bluetooth API can be queried by using the system property "bluetooth.api.version". Version 1.1 of the Bluetooth API is implemented in S60 3rd Edition, FP2 devices. Do not use the isPowerOn() method in older devices and if you do not get the API version "1.1" by using the system property. Also note also that Bluetooth API 1.1 is implemented in Series 40 5th Edition devices (and newer).