Java Development

[uniquehussam]

Dear developers,

I'm trying to search for devices within my app

This code gives me "java.lang.nullpointerexception" error

Pls help ^^

public final class MyScreen extends MainScreen 

{
public static BluetoothSerialPortInfo[] _portInfo;
public static String devList [] ;
public static int devcount ;

public MyScreen()
{ 

if (BluetoothSerialPort.isSupported())
{
_portInfo = BluetoothSerialPort.getSerialPortInfo();
int numServices = _portInfo.length;

for (int count = numServices - 1; count >= 0; --count)
{
devList[count] = _portInfo[count].getServiceName();
devcount++;
}

add(new LabelField(devList [devcount],LabelField.FIELD_HCENTER ));

}
else
{
add(new LabelField("Bluetooth is not supported on this device."));
}

}

}

[vingilot]

Hey! Very interested, are you trying to identify connected devices? As I have been told this is not possible. I'd like to wait for a more experienced developer's input. If we cannot determine connected devices, I have considered using the discovery listener to determine devices in range, as I know this can be done and I believe I might be able to work this as an alternative. Hope we both get clarification on this.

[pbrebs]

You refer to "devList[devcount]" without having assigned a value to that element.

[uniquehussam]

Dear vingilot,

I'd like to see what paired devices are available in my range
and then put them in a list using their names @ .getServiceName()
so that later in my app i can choose a device to communicate with

Dear pbrebs,

I did ..
devList[count] = _portInfo[count].getServiceName();
where
devcount and count are integers with the same value
see the loop
I dunno if there is an issue with that )))


Thanks all for the interaction..
hope to get a solution soon
^_^

[uniquehussam]

Dear all,

All I want to do is exactly the same as when you go to
Bluetooth Connections>> Add New Device >> Search
and then a list of all devices is available
^_^

If anyone has that bit of code
please please please share it with us

Thanks,
^____^

[MSohm]

Have a look at the BluetoothJSR82Demo included with the BlackBerry Java SDK for an example that implements device discovery.

[uniquehussam]

Well i am finding an issue in actually getting what the code is supposed to be doing..

i read the code.. and i can see menu items in some samples and other components and stuff
however, when i load them on my device they miss many of these!

ex. the JSR82 has a dialog to choose the mode..
client/server then the app is closed !!

I have a 3 different devices.. 2 of which are brand new
tourch and curve-touch