Java로 연결된/페어링 된 Bluetooth 장치에 대한 정보를 얻는 방법은 무엇입니까?

Question

저는 블루투스 초심자입니다. Bluecove를 Java와 함께 사용하려고합니다. 내 컴퓨터에 이미 연결되어 있거나 쌍을 이루고있는 장치 (예 : 장치 배터리 수준 검색)와 통신하고 싶습니다. 문제는 연결된 장치를 찾을 수 없다는 것입니다.

로컬 장치를 가지고 장치를 검색 할 수 있지만 연결된 장치를 사용할 수는 없다는 것을 알고 있습니다. 코드 found here을 사용하고 있습니다.

필요한 경우 다른 라이브러리를 사용해 볼 준비가되었습니다. BluetoothDevices.java에서

: RemoteDeviceDiscovery.java에서

import javax.bluetooth.*; 
import javax.bluetooth.UUID; 
import java.util.*; 

public class ServicesSearch { 

    /** 
    * UUID used to find specific service supported by bluetooth device 
    * https://www.bluetooth.org/en-us/specification/assigned-numbers/service-discovery 
    * Find UUIDs for all types of bluetooth services. 
    */ 
    /* To find push object service */ 
    private UUID OBEX_OBJECT_PUSH_PROFILE = new UUID(0x1105); 
    /* To find file transfer service */ 
    private UUID OBEX_FILE_TRANSFER_PROFILE = new UUID(0x1106); 
    /* To find hands free service */ 
    private UUID HANDS_FREE = new UUID(0x111E); 
    /* Get URL attribute from bluetooth service */ 
    private int URL_ATTRIBUTE = 0X0100; 

    public Map<String, List<String>> getBluetoothDevices() { 
     /** 
     * Find service on bluetooth device 
     * Note: In following line you can use one service at a time. I'm new to bluetooth programming it might me wrong perception. 
     * UUID[] searchUuidSet = new UUID[]{OBEX_FILE_TRANSGER_PROFILE}; 
     * 
     * CORRECT: UUID[] searchUuidSet = new UUID[]{OBEX_FILE_TRANSGER_PROFILE}; 
     * WRONG: UUID[] searchUuidSet = new UUID[]{OBEX_FILE_TRANSGER_PROFILE, OBEX_OBJECT_PUSH_PROFILE}; 
     */ 
     /* Initialize UUID Array */ 
     UUID[] searchUuidSet = new UUID[]{HANDS_FREE}; 
     final Object serviceSearchCompletedEvent = new Object(); 
     int[] attrIDs = new int[]{URL_ATTRIBUTE}; 

     /* Create an object to get list of devices in range or paired */ 
     RemoteDeviceDiscovery remoteDeviceDiscovery = new RemoteDeviceDiscovery(); 
     /* Create map to return Bluetooth device address, name and URL */ 
     final Map<String, List<String>> mapReturnResult = new HashMap<String, List<String>>(); 

     try { 
      /* Create an object of DiscoveryListener */ 
      DiscoveryListener listener = new DiscoveryListener() { 

       /* To find bluetooth devices */ 
       public void deviceDiscovered(RemoteDevice btDevice, DeviceClass cod) { 
       } 

       /* To find bluetooth devices */ 
       public void inquiryCompleted(int discType) { 
       } 

       /* Find service URL of bluetooth device */ 
       public void servicesDiscovered(int transID, ServiceRecord[] servRecord) { 
        for (int i = 0; i < servRecord.length; i++) { 
         /* Find URL of bluetooth device */ 
         String url = servRecord[i].getConnectionURL(ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false); 
         if (url == null) { 
          continue; 
         } 
         String temporaryString = ""; 
         /* Get object of bluetooth device */ 
         RemoteDevice rd = servRecord[i].getHostDevice(); 
         /* Get attribute from ServiceRecord */ 
         DataElement serviceName = servRecord[i].getAttributeValue(URL_ATTRIBUTE); 
         if (serviceName != null) { 
          temporaryString = serviceName.getValue() + "\n" + url; 
          /* Put it in map */ 
          mapReturnResult.get(rd.getBluetoothAddress()).add(temporaryString); 
         } else { 
          temporaryString = "Uknown service \n" + url; 
          /* Put it in map */ 
          mapReturnResult.get(rd.getBluetoothAddress()).add(temporaryString); 
         } 
        } 
       } 

       public void serviceSearchCompleted(int transID, int respCode) { 
        /* Notify thread when search completed */ 
        synchronized (serviceSearchCompletedEvent) { 
         serviceSearchCompletedEvent.notifyAll(); 
        } 
       } 
      }; 

      /* Get list of bluetooth device from class RemoteDeviceDiscovery */ 
      for (Enumeration en = remoteDeviceDiscovery.getDevices().elements(); en.hasMoreElements();) { 
       /* Get RemoteDevice object */ 
       RemoteDevice btDevice = (RemoteDevice) en.nextElement(); 
       /* Create list to return details */ 
       List<String> listDeviceDetails = new ArrayList<String>(); 

       try { 
        /* Add bluetooth device name and address in list */ 
        listDeviceDetails.add(btDevice.getFriendlyName(false)); 
        listDeviceDetails.add(btDevice.getBluetoothAddress()); 
       } catch (Exception e) { 
       } 

       /* Put bluetooth device details in map */ 
       mapReturnResult.put(btDevice.getBluetoothAddress(), listDeviceDetails); 
       synchronized (serviceSearchCompletedEvent) { 
        LocalDevice.getLocalDevice().getDiscoveryAgent().searchServices(attrIDs, searchUuidSet, btDevice, listener); 
        serviceSearchCompletedEvent.wait(); 
       } 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     /* Return bluetooth devices detail */ 
     return mapReturnResult; 
    } 
} 

: ServicesSearch.java에서

import javax.swing.*; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 

public class BluetoothDevices extends javax.swing.JFrame { 

    /* DefaultListModel to attach it with JList */ 
    private DefaultListModel defaultModel; 
    /* Map to get device details list */ 
    private Map<String, List<String>> mapReturnResult = new HashMap<String, List<String>>(); 
    /* Map to identify device on user click of JList */ 
    private Map<Integer, List<String>> mapDevicePosition = new HashMap<Integer, List<String>>(); 

    public BluetoothDevices() { 
     initComponents(); 
     defaultModel = new DefaultListModel(); 
    } 

    @SuppressWarnings("unchecked") 
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents 
    private void initComponents() { 

     jScrollPane1 = new javax.swing.JScrollPane(); 
     JListBluetoothDevices = new javax.swing.JList(); 
     lblDeviceName = new javax.swing.JLabel(); 
     lblRuntimeDeviceName = new javax.swing.JLabel(); 
     lblDeviceAddress = new javax.swing.JLabel(); 
     lblRuntimeDeviceAddress = new javax.swing.JLabel(); 
     lblServiceDetails = new javax.swing.JLabel(); 
     jScrollPane2 = new javax.swing.JScrollPane(); 
     JTextAreaServiceDetails = new javax.swing.JTextArea(); 

     setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 
     setTitle("Bluecove Bluetooth Discovery"); 
     setResizable(false); 
     addWindowListener(new java.awt.event.WindowAdapter() { 
      public void windowOpened(java.awt.event.WindowEvent evt) { 
       formWindowOpened(evt); 
      } 
     }); 

     JListBluetoothDevices.addMouseListener(new java.awt.event.MouseAdapter() { 
      public void mouseClicked(java.awt.event.MouseEvent evt) { 
       JListBluetoothDevicesMouseClicked(evt); 
      } 
     }); 
     jScrollPane1.setViewportView(JListBluetoothDevices); 

     lblDeviceName.setText("Bluetooth Device Name"); 

     lblDeviceAddress.setText("Bluetooth Device Address"); 

     lblServiceDetails.setText("Service Details"); 

     JTextAreaServiceDetails.setColumns(20); 
     JTextAreaServiceDetails.setRows(5); 
     jScrollPane2.setViewportView(JTextAreaServiceDetails); 

     javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
     getContentPane().setLayout(layout); 
     layout.setHorizontalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
         .addGroup(layout.createSequentialGroup() 
           .addContainerGap() 
           .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 158, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
           .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
             .addGroup(layout.createSequentialGroup() 
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
                 .addComponent(lblDeviceName) 
                 .addComponent(lblDeviceAddress)) 
               .addGap(73, 73, 73) 
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
                 .addComponent(lblRuntimeDeviceAddress) 
                 .addComponent(lblRuntimeDeviceName, javax.swing.GroupLayout.PREFERRED_SIZE, 144, javax.swing.GroupLayout.PREFERRED_SIZE))) 
             .addComponent(lblServiceDetails) 
             .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 475, Short.MAX_VALUE)) 
           .addContainerGap()) 
     ); 
     layout.setVerticalGroup(
       layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
         .addGroup(layout.createSequentialGroup() 
           .addContainerGap() 
           .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
             .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 185, Short.MAX_VALUE) 
             .addGroup(layout.createSequentialGroup() 
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
                 .addComponent(lblDeviceName) 
                 .addComponent(lblRuntimeDeviceName)) 
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
               .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
                 .addComponent(lblDeviceAddress) 
                 .addComponent(lblRuntimeDeviceAddress)) 
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
               .addComponent(lblServiceDetails) 
               .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
               .addComponent(jScrollPane2, 0, 0, Short.MAX_VALUE))) 
           .addContainerGap()) 
     ); 

     pack(); 
    }// </editor-fold>//GEN-END:initComponents 

    /* Search for bluetooth device when window opened */ 
    private void formWindowOpened(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_formWindowOpened 
     int intDevicePosition = 0; 
     JListBluetoothDevices.setModel(defaultModel); 

     /* Create an object of ServicesSearch */ 
     ServicesSearch ss = new ServicesSearch(); 
     /* Get bluetooth device details */ 
     mapReturnResult = ss.getBluetoothDevices(); 

     /* Add devices in JList */ 
     for (Map.Entry<String, List<String>> entry : mapReturnResult.entrySet()) { 
      defaultModel.addElement(entry.getValue().get(0)); 
      mapDevicePosition.put(intDevicePosition, entry.getValue()); 
      intDevicePosition++; 
     } 
    }//GEN-LAST:event_formWindowOpened 

    /* On click of any item in List Box */ 
    private void JListBluetoothDevicesMouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_JListBluetoothDevicesMouseClicked 
    /* Get bluetooth device details from temporary list */ 
     List<String> tmpDeviceDetails = mapDevicePosition.get(JListBluetoothDevices.getSelectedIndex()); 
    /* Set bluetooth device name */ 
     lblRuntimeDeviceName.setText(tmpDeviceDetails.get(0)); 
    /* Set bluetooth device Address */ 
     lblRuntimeDeviceAddress.setText(tmpDeviceDetails.get(1)); 

     if (tmpDeviceDetails.size() > 2 && tmpDeviceDetails.get(2) != null) { 
    /* Set bluetooth device service name and URL */ 
      JTextAreaServiceDetails.setText(tmpDeviceDetails.get(2)); 
     } else { 
      JTextAreaServiceDetails.setText("Service not found"); 
     } 
    }//GEN-LAST:event_JListBluetoothDevicesMouseClicked 

    /** 
    * @param args the command line arguments 
    */ 
    public static void main(String args[]) { 
     java.awt.EventQueue.invokeLater(new Runnable() { 

      public void run() { 
       /* To set new look and feel */ 
       JFrame.setDefaultLookAndFeelDecorated(true); 
       try { 
        /** 
        * Change look and feel of JFrame to Nimbus 
        * For other look and feel check 
        * http://www.javaquery.com/2013/06/how-to-applyset-up-swing-look-and-feel.html 
        */ 
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); 
       } catch (Exception ex) { 
        ex.printStackTrace(); 
       } 
       /* Create an object of BluetoothDevices */ 
       BluetoothDevices bluetoothDevicesFrame = new BluetoothDevices(); 
       /* make BluetoothDevices visible */ 
       bluetoothDevicesFrame.setVisible(true); 
      } 
     }); 
    } 

    // Variables declaration - do not modify//GEN-BEGIN:variables 
    private javax.swing.JList JListBluetoothDevices; 
    private javax.swing.JTextArea JTextAreaServiceDetails; 
    private javax.swing.JScrollPane jScrollPane1; 
    private javax.swing.JScrollPane jScrollPane2; 
    private javax.swing.JLabel lblDeviceAddress; 
    private javax.swing.JLabel lblDeviceName; 
    private javax.swing.JLabel lblRuntimeDeviceAddress; 
    private javax.swing.JLabel lblRuntimeDeviceName; 
    private javax.swing.JLabel lblServiceDetails; 
    // End of variables declaration//GEN-END:variables 
} 

import javax.bluetooth.*; 
import java.io.IOException; 
import java.util.Vector; 

public class RemoteDeviceDiscovery { 

    public Vector getDevices() { 
     /* Create Vector variable */ 
     final Vector devicesDiscovered = new Vector(); 
     try { 
      final Object inquiryCompletedEvent = new Object(); 
      /* Clear Vector variable */ 
      devicesDiscovered.clear(); 

      LocalDevice device = LocalDevice.getLocalDevice(); 

      System.out.println("Address : " + device.getBluetoothAddress()); 
      System.out.println("Name : " + device.getFriendlyName()); 
      System.out.println("Powered : " + device.isPowerOn()); 

      RemoteDevice[] devices = device.getDiscoveryAgent().retrieveDevices(DiscoveryAgent.PREKNOWN); 

      for (RemoteDevice d : devices) { 
       System.out.println("Adress : " + d.getBluetoothAddress()); 
       System.out.println("Name : " + d.getFriendlyName(false)); 
       System.out.println("Authenticated : " + d.isAuthenticated()); 
       System.out.println("Trusted : " + d.isTrustedDevice()); 
       System.out.println(); 
      } 

      /* Create an object of DiscoveryListener */ 
      DiscoveryListener listener = new DiscoveryListener() { 

       public void deviceDiscovered(RemoteDevice btDevice, DeviceClass cod) { 
        /* Get devices paired with system or in range(Without Pair) */ 
        System.out.println("Address : " + btDevice.getBluetoothAddress()); 
        try { 
         System.out.println("Name : " + btDevice.getFriendlyName(false)); 
        } catch (IOException e) { 
        } 
        devicesDiscovered.addElement(btDevice); 
       } 

       public void inquiryCompleted(int discType) { 
        /* Notify thread when inquiry completed */ 
        synchronized (inquiryCompletedEvent) { 
         inquiryCompletedEvent.notifyAll(); 
        } 
       } 

       /* To find service on bluetooth */ 
       public void serviceSearchCompleted(int transID, int respCode) { 
       } 

       /* To find service on bluetooth */ 
       public void servicesDiscovered(int transID, ServiceRecord[] servRecord) { 
       } 
      }; 

      synchronized (inquiryCompletedEvent) { 
       /* Start device discovery */ 
       boolean started = LocalDevice.getLocalDevice().getDiscoveryAgent().startInquiry(DiscoveryAgent.GIAC, listener); 
       if (started) { 
        System.out.println("wait for device inquiry to complete..."); 
        inquiryCompletedEvent.wait(); 
       } 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     /* Return list of devices */ 
     return devicesDiscovered; 
    } 
} 

당신이 볼 수 있듯이, 나는를 얻기 위해 노력 LocalDevice에 대한 모든 사전 장치. 여기에서 이미 컴퓨터에 연결된 모든 Bluetooth 장치를 찾을 수 있지만 연결되어 있는지 여부는 알 수 없습니다.

이

Address : 000000000003 
Name : M 
Powered : true 

Adress : ACD1B8925628 
Name : BLU-RAY HOME THEATRE SYSTEM 
Authenticated : false 
Trusted : false 

Adress : A0143D6B170A 
Name : Parrot ZIK 2.0 V2.05 
Authenticated : false 
Trusted : false 

Adress : DC415F7780BB 
Name : iPhone de Benjamin 
Authenticated : false 
Trusted : false 

Adress : B0B28FD3668D 
Name : LaBox6687 
Authenticated : false 
Trusted : false 

wait for device inquiry to complete... 
Address : 4D08B6DE2FDE 
Name : LaBox6687 
Address : A5362CC20702 

내가 사용하려는 장치가 앵무새 ZIK 2.0 V2.05입니다 : 여기

이 출력됩니다. 그들은 다음과 같이 주장 링크 된 라이브러리 문서에서

Answer 1

:

SmartGattLib가 (블루투스 4.0 블루투스 로우 에너지 일명) 블루투스 스마트 기기와의 작업을 단순화하는 자바 라이브러리입니다. 은 채택 된 GATT 사양의 모든 UUID와 편리한 특성 (예 : 심박수, BatteryLevel)을 해석하는 편리한 방법을 제공합니다.

Implemented and tested characteristics

• BatteryLevel
• BodySensorLocation
• HeartRateMeasurement
• ManufacturerNameString

는 테스트 클래스에서이 두 가지 예는 너무 도움이되기를 바랍니다.

• https://github.com/movisens/SmartGattLib/blob/master/src/test/java/Example.java
• https://github.com/movisens/SmartGattLib/blob/master/src/test/java/BatteryLevelTest.java