Question

我希望得到/读取我连接几个Android设备后传递的数据，到目前为止我配对，连接并在它们之间传输信息，但不知道如何实现阅读部分，这里我不是确定我是否应该使用createRfcommSocketToServiceRecord或listenUsingRfcommWithServiceRecord为此目的创建读取套接字。

我有两个屏幕，一个是用户按下按钮并传输信息，另一个是接收器按下另一个按钮并读取数据，我想知道同步是否不正确以及我按下＆＃34;发送＆＃34;按钮，然后＆＃34;读＆＃34;按钮连接不可用或者这个实现不能一起推荐。

这是我的两次尝试：

尝试1：

    //Executed after the user press the read data button
    private void connectToServerSocket(BluetoothDevice device, UUID uuid) {

          try{                

                BluetoothServerSocket serverSocket = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(device.getName(),uuid);

                //Here is where I get the error:
                //io to Server Socket JSR82 Connection is not created, failed or aborted
                BluetoothSocket clientSocket = serverSocket.accept();

                // Start listening for messages.
                StringBuilder incoming = new StringBuilder();
                listenForMessages(clientSocket, incoming);

                // Add a reference to the socket used to send messages.
                transferSocket = clientSocket;

          } catch (IOException ioe) {        
                this.printToast("Excep io toServerSocket:" + ioe.getMessage());
          } catch (Exception e) {
                this.printToast("Excep toServerSocket:" + e.getMessage());
          }

    }

尝试2：

   private void connectToServerSocket(BluetoothDevice device, UUID uuid) {

          try{ 

                BluetoothServerSocket clientSocket = device.createRfcommSocketToServiceRecord(uuid);
                 //clientSocket without method and invoke is not working either
                 Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
                 clientSocket = (BluetoothSocket) m.invoke(device, 1);

                //Here is where I get the error:
                //io to Server Socket JSR82 Connection is not created, failed or aborted
                clientSocket.connect();

                // Start listening for messages.
                StringBuilder incoming = new StringBuilder();
                listenForMessages(clientSocket, incoming);

                // Add a reference to the socket used to send messages.
                transferSocket = clientSocket;

          } catch (IOException ioe) {        
                this.printToast("Excep io toServerSocket:" + ioe.getMessage());
          } catch (Exception e) {
                this.printToast("Excep toServerSocket:" + e.getMessage());
          }

    }

在serverSocket.accept()或clientSocket.connect()我得到例外：

Connection is not created, failed or aborted

如果有人能指导我使数据阅读部分正常工作，我将不胜感激。感谢。

Answer 1

查看Android SDK附带的Android的BluetoothChat示例。我认为它完全符合您的要求。

$ ANDROID_SDK /样品/机器人-19 /遗留/ BluetoothChat / SRC / COM /示例/机器人/ BluetoothChat

Answer 2

阅读管理连接部分。它清楚地写在文档中如何通过蓝牙在设备之间交换（读/写）信息。 http://developer.android.com/guide/topics/connectivity/bluetooth.html

在Android上从蓝牙数据传输中读取数据

2 个答案: