我已经编写了一个普通代码来连接到标准蓝牙设备(一个 wocket)。我正在做的是作为客户端连接到 wocket(它只是一块蓝牙芯片)。我正在使用随机 UUID 连接到 wocket。但是 connect 方法抛出一个 IO 异常,告诉我它无法连接到蓝牙设备。我使用的代码来自 Android 开发者论坛:http: //developer.android.com/guide/topics/connectivity/bluetooth.html
私有类 ConnectThread 扩展线程 { 私有最终 BluetoothSocket mmSocket; 私有最终蓝牙设备 mmDevice;
public ConnectThread(BluetoothDevice device) {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
BluetoothSocket tmp = null;
mmDevice = device;
// Get a BluetoothSocket to connect with the given BluetoothDevice
try {
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) { }
mmSocket = tmp;
}
public void run() {
// Cancel discovery because it will slow down the connection
mBluetoothAdapter.cancelDiscovery();
try {
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
**This call is throwing and IOException saying:
java.io.IOException Discovery Failed.
**
} catch (IOException connectException) {
// Unable to connect; close the socket and get out
try {
mmSocket.close();
} catch (IOException closeException) { }
return;
}
// Do work to manage the connection (in a separate thread)
manageConnectedSocket(mmSocket);
}
/** Will cancel an in-progress connection, and close the socket */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
wocket 抛出 IOException 的原因可能是什么。我认为将它作为服务器连接到服务器没有任何意义,因为对于您建立 UUID 的服务器,然后您希望客户端具有相同的 UUID,这在我的情况下是不可能的,因为我无法对 wocket 进行编程。
我正在使用带有 Android 4.0 的 HTC one x 作为测试设备。
先感谢您。