[elaltaico]

Hello

I am developping an application which look for latitude and longitude by using GPS.If the device can not find GPS then I want it to look for bluetooth devices.I can find latitude and longitude by using GPS without any problem.Unfortunately, I am not able to look for bluetooth devices if I cant find any GPS. I found some codes to look for bluetooth devics but it is a whole class.You know a function or a method which is used to look for bluetooth devices? I will be appreciated if you can help me.

Best Regards
Buyuk Altayli

[thiagobrunoms]

Hello,
I've not got why you can't find bluetooth devices when you don't have latitude/longitude. I want to say that they are independent.

//gets local bluetooth device reference
LocalDevice localDevice = LocalDevice.getLocalDevice(); 
//an agent to discover bluetooth devices and services
DiscoveryAgent agent = this.localDevice.getDiscoveryAgent(); 
//start searching bluetooth devices //discoveryListener implements the DiscoveryListener interface
agent.startInquiry(DiscoveryAgent.GIAC, discoveryListener);

If you want to get position using bluetooth GPS, take a look at http://wiki.forum.nokia.com/index.ph..._Bluetooth_GPS

Don't forget to turn the bluetooth connection on at you device's settings.

[elaltaico]

Hello thiagobrunoms

I used the following code but unfortunately my mobile phone is not able to look for any devices by using bluetooth.I do not know what I am doing wrong.Could you please check the code and tell me where I am doing wrong? Thank you in advance.

Regards
Buyuk Altayli

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import com.sun.lwuit.Display;
import com.sun.lwuit.Form;
import javax.bluetooth.BluetoothStateException;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.microedition.midlet.*;
  import java.util.Vector;
// bluetooth classes
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
/**
 * @author user
 */
public class Midlet extends MIDlet {

   public class BTManager implements DiscoveryListener {

  public static final int BLUETOOTH_TIMEOUT = 30000;

  public Vector btDevicesFound;
  public Vector btServicesFound;

  private boolean isBTSearchComplete;

  BTManager btManager = null;

  BTManager instance() {
    if (btManager == null) {
      btManager = new BTManager();
    }

    return btManager;
  }

  /** Creates a new instance of BTManager */
  private BTManager() {
    btDevicesFound = new Vector();
    btServicesFound = new Vector();
  }

  public  UUID[] getRFCOMM_UUID() {
      System.out.println("getRFCOMM_UUID içerisindeyim");
    UUID[] uuidSet;
    UUID RFCOMM_UUID = new UUID(0x1101); // RFCOMM service
    uuidSet = new UUID[1];
    uuidSet[0] = RFCOMM_UUID;

    return uuidSet;
  }

  /**
   * Finds bluetooth devices
   *
   * @param aServices,
   *          an array with the service UUID identifiers you want to search
   * @returns the number of devices found
   */
  public int find(UUID[] aServices) {
      System.out.println("find UUID içerisindeyim");
    findDevices();
   return btDevicesFound.size();
  }

  public int findDevices() {
      System.out.println("findDevices() içerisindeyim");
    try {
      // cleans previous elements
      btDevicesFound.removeAllElements();
      isBTSearchComplete = false;
      LocalDevice local = LocalDevice.getLocalDevice();
      DiscoveryAgent discoveryAgent = local.getDiscoveryAgent();
      // discover new devices
      discoveryAgent.startInquiry(DiscoveryAgent.GIAC, this);
      while ((!isBTSearchComplete)) {
        // waits for a fixed time, to avoid long search
        synchronized (this) {
          this.wait(BTManager.BLUETOOTH_TIMEOUT);
        }
        // check if search is completed
        if (!isBTSearchComplete) {
          // search no yet completed so let's cancel it
          discoveryAgent.cancelInquiry(this);
        }
      }
      System.out.println("try icerisindeyim");
    } catch (Exception e) {
      System.out.println("catch icerisindeyim");
        e.printStackTrace();

    }
    return btDevicesFound.size();
  }

 public void servicesDiscovered(int param, ServiceRecord[] serviceRecord) {
    int index = btServicesFound.size() - 1;
    for (int i = 0; i < serviceRecord.length; i++) {
      btServicesFound.setElementAt(serviceRecord[i], index);
    }
  }

  public void serviceSearchCompleted(int transID, int respCode) {
    isBTSearchComplete = true;
    // notifies and wake mains thread that service search is completed
    synchronized (this) {
      this.notify();
    }
  }

  /**
   * Get a human readable name of the BT device.
   * 
   * @param deviceID
   * @return the friendly name for the BT device
   */
  public String getDeviceName(int deviceID) {
    try {
      return ((RemoteDevice) btDevicesFound.elementAt(deviceID))
          .getFriendlyName(false);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return "Error";
  }

  /**
   * Gets the URL address of the the service you want to connect
   * 
   * @param deviceID
   * @return the Url address for the device and service found
   */
  public String getServiceURL(int deviceID) {
    try {
      return ((ServiceRecord) btServicesFound.elementAt(deviceID))
          .getConnectionURL(ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return "Error";
  }

   
  public void deviceDiscovered(RemoteDevice remoteDevice,
      DeviceClass deviceClass) {
    btDevicesFound.addElement(remoteDevice);
  }

  public void inquiryCompleted(int param) {
    isBTSearchComplete = true;
    // notifies and wake main thread that device search is completed
    synchronized (this) {
      this.notify();
    }
  }
   }

    public void startApp() {
        getForm1A();
    }

    public void getForm1A(){
        Display.init(this);
        Form a1=new Form();

BTManager bt=new BTManager();
bt.findDevices();



        a1.show();

    }

    
    
    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

 
}

[ingsaurabh]

while checking on real device did you manually turn on the bluettoth bcoz in java one cannot open the bluetooth by code