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我已经使用下面的代码来检测活动的蓝牙设备并创建它们的列表。准备好活动蓝牙设备列表后，我们可以从列表中选择一个设备并向该设备发送连接请求。一旦请求的设备接受连接请求，我需要从配对设备获取连续的传入数据信号。

protected void connect(BluetoothDevice device) {
        try {
            Log.d(TAG,"connect bluetooth");
            // Create a Socket connection: need the server's UUID number of
            // registered
            Method m = device.getClass().getMethod("createRfcommSocket",
                    new Class[] { int.class });
            socket = (BluetoothSocket) m.invoke(device, 1);
            socket.connect();
            Log.d(TAG, ">>Client connectted");
            inputStream = socket.getInputStream();
            socket.getOutputStream();
            int read = -1;
            final byte[] bytes = new byte[2048];
            while (true) {
                synchronized (obj1) {
                    read = inputStream.read(bytes);
                    Log.d(TAG, "read:" + read);
                    if (read > 0) {
                        final int count = read;
                        String str = SamplesUtils.byteToHex(bytes, count);
                        //                      Log.d(TAG, "test1:" + str);
                        String hex = hexString.toString();
                        if (hex == "") {
                            hexString.append("<--");
                        } else {
                            if (hex.lastIndexOf("<--") < hex.lastIndexOf("-->")) {
                                hexString.append("\n<--");
                            }
                        }
                        hexString.append(str);
                        hex = hexString.toString();
                        //                      Log.d(TAG, "test2:" + hex);
                        if (hex.length() > maxlength) {
                            try {
                                hex = hex.substring(hex.length() - maxlength,
                                        hex.length());
                                hex = hex.substring(hex.indexOf(" "));
                                hex = "<--" + hex;
                                hexString = new StringBuffer();
                                hexString.append(hex);
                            } catch (Exception e) {
                                e.printStackTrace();
                                Log.e(TAG, "e", e);
                            }
                        }
                        _handler.post(new Runnable() {
                            public void run() {
                            }
                        });
                    }
                }
            }

        } catch (Exception e) {
            Log.e(TAG, ">>", e);
            Toast.makeText(getBaseContext(),
                    getResources().getString(R.string.ioexception),
                    Toast.LENGTH_SHORT).show();
            return;
        } finally {
            if (socket != null) {
                try {
                    Log.d(TAG, ">>Client Socket Close");
                    socket.close();
                    socket = null;
                    // this.finish();
                    return;
                } catch (IOException e) {
                    Log.e(TAG, ">>", e);
                }
            }
        }
    }

我需要检测连续传入的数据信号。是否可以做到。

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0 回答 0