Java Development

[MudassirAli]

Hello Community,

I am trying to connect BlackBerry Bold 9900 to a Bluetooth device having SPP. But when I try to open a connection, it fails with an exception (java.io.IOException: Unable to connect.) I cannot understand why its not getting connected.

I am using the BlackBerry JDE Eclipse plugin with platform version 4.5.

Posting the code here, please someone have a look at it;

public final class ReaderScreen extends MainScreen {

private BluetoothSerialPortInfo[] serialPortInfo;
private StreamConnection bluetoothConnection;

private DataInputStream inputStream;
private String contents;

private LabelField label;

/**
 * Creates a new ReaderScreen object
 */
public ReaderScreen() {

setTitle("Reader");

label = new LabelField("Started");

add(label);

serialPortInfo = BluetoothSerialPort.getSerialPortInfo();

if (serialPortInfo == null) {
appendLabel("info is null.");
} else {
appendLabel("info is not null.");
}

appendLabel("Going to open connection...");

appendLabel("Connecting to device " + serialPortInfo[0].toString());

try {
appendLabel("Inside the first thread.");

bluetoothConnection = (StreamConnection) Connector.open(
serialPortInfo[0].toString(), Connector.READ);

if (bluetoothConnection == null) {
appendLabel("connection is null.");
} else {
appendLabel("connection is not null.");
}
} catch (IOException e) {
e.printStackTrace();

appendLabel("Exception in constructor");
appendLabel(e.toString());
} catch (Exception e) {
e.printStackTrace();

appendLabel("Gen Exception in constructor");
appendLabel(e.toString());
}

appendLabel("Starting thread...");
UiApplication.getUiApplication().invokeLater(new ReaderThread());
}

[simon_hain]

you start a thread using start(), not invokelater.
blocking operations, like I/O, should be done on a separate thread.

take a look at the bluetooth demo in your samples folder.

[MudassirAli]

@simon_hain: Thanks for the quick reply. Let me try it.

[MudassirAli]

Simon, there is no method as start() available in my thread. I am implementing the Runnable interface and its (thread class's) object is also showing a run() method.

[simon_hain]

you can also create a thread with a runnable.

[MudassirAli]

Yeah. But I can't figure out why it can't connect. Can you suggest me any workaround or anything I am forgetting in my approach?

[simon_hain]

did you run the sample app? can it connect?

[MudassirAli]

Yeah. I ran it several times. As I said before, it is throwing the IOException.