Question

我是Android新编码的新手。我一直在关注“专业Android 4应用程序开发”一书我基本上试图找出一种方法来接收任何设备发送的蓝牙串。这就是我到目前为止所拥有的

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Set up the window layout
    setContentView(R.layout.data);

    ListView myData = (ListView)findViewById(R.id.list);
    final ArrayList<String> mData = new ArrayList<String>();
    final ArrayAdapter<String> aa;

    aa = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mData);

    //Bind Array to List View

    myData.setAdapter(aa);

    startDiscovery();

    String add = BluetoothDevice.EXTRA_DEVICE;

    BluetoothDevice device = mAdapter.getRemoteDevice(add);
    connectToServerSocket(device, MY_UUID);     

    mData.add(0, incoming);
    aa.notifyDataSetChanged();

}

这是我的onCreate，这些是我不确定如何调用它们的类或函数...

private ArrayList<BluetoothDevice> deviceList =
    new ArrayList<BluetoothDevice>();

    private void startDiscovery() {
        registerReceiver(discoveryResult,
        new IntentFilter(BluetoothDevice.ACTION_FOUND));
        if (mAdapter.isEnabled() && !mAdapter.isDiscovering())
        deviceList.clear();
        mAdapter.startDiscovery();
        }
        BroadcastReceiver discoveryResult = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
        String remoteDeviceName = intent.getStringExtra(BluetoothDevice.EXTRA_NAME);
        BluetoothDevice remoteDevice =
                intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                deviceList.add(remoteDevice);
                Log.d(TAG, "Discovered"  + remoteDeviceName);
                }
                };

这是我的插座：

private void connectToServerSocket(BluetoothDevice device, UUID uuid){
try{
        BluetoothSocket clientSocket = device.createRfcommSocketToServiceRecord(uuid);
        clientSocket.connect();
        StringBuilder incoming = new StringBuilder();
        listenforData(clientSocket, incoming);

        transferSocket = clientSocket;
    }catch(IOException e){
        Log.e("BLUETOOTH","Bluetooth client I/O Exception", e);
    }
}

我的数据听起来像这样：

private void listenforData(BluetoothSocket socket, StringBuilder incoming){
        int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];
        try{
            InputStream instream = socket.getInputStream();
        int bytesRead = -1;

        while(true){
        bytesRead = instream.read(buffer);
        if (bytesRead != -1){
            String result = "";
            while((bytesRead == bufferSize)&&(buffer[bufferSize-1]!=0)){
            result = result + new String(buffer,0,bytesRead-1);
            bytesRead= instream.read(buffer);
            }
            result = result + new String(buffer, 0, bytesRead -1);
            incoming.append(result);
        }
        socket.close();
        }
    }catch (IOException e){
        Log.e(TAG, "Message received failed.", e);
    }
    finally{
    }
}}

我缺少的是如何从套接字侦听器中检索字符串并将它们放在ListView上。我需要一些指导。我是否正确地做到了这一点？

如何从Android中的蓝牙套接字获取数据？

0 个答案: