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Bluetooth Service Null Pointer Exception in BLE Scanner Example [message #1759950]

Thu, 20 April 2017 06:35

Eclipse User

Hi,

I was trying to implement kura's ble scanner example . I made that as plugin project and exported as deployble plugins and fragment and deployed that in raspberry-pi using mToolKit . But when that bundle starts it is giving and Nullpointer exception inside setup() method . It is giving me the NullPointerException in the below line in side setup() method :

this.bluetoothAdapter = bluetoothService.getBluetoothAdapter(adapterName);

Here, adapterName is coming as a string and the value is "hci0".

I'm uploading the project as well as error log . Kindly help me .

Attachment: bundleDeploymentErrorLog
(Size: 6.92KB, Downloaded 122 times)
Attachment: org.eclipse.kura.example.beacon.scanner.tar.gz
(Size: 8.64KB, Downloaded 89 times)

Re: Bluetooth Service Null Pointer Exception in BLE Scanner Example [message #1760848 is a reply to message #1759950]

Wed, 03 May 2017 11:18

Eclipse User

Hi,

it seems that the bluetoothService object is null, so when you try to get the adapter, a NullPointerException is thrown.

IMHO, start with a fresh user workspace and import the original beacon scanner. Then start modifying that working code.
Or, develop the bundle from scratch (as shown http://eclipse.github.io/kura/doc/configurable_component.html) using the beacon scanner code.

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