Question

我正在开发一个通过蓝牙与微控制器通信的应用程序。我正在发送一个由字节数组成的数据包，该数据包已成功接收。但是，我没有收到微控制器发送的字节数组。没有错误出现。接收代码如下：

private void beginListenForData() {
    // TODO Auto-generated method stub
    Log.e("clientsocket", "listening data");
    final Handler handler = new Handler();
    final byte delimiter = 10; // This is the ASCII code for a newline
                                // character

    stopWorker = false;
    readBufferPosition = 0;
    readBuffer = new byte[1024];
    workerThread = new Thread(new Runnable() {
        public void run() {
            while (!Thread.currentThread().isInterrupted() && !stopWorker) {
                try {
                    int bytesAvailable = mmInputStream.available();

                    if (bytesAvailable > 0) {
                        Log.e("bytes", "" + bytesAvailable);

                        Log.e("bytes", "" + bytesAvailable);
                        byte[] packetBytes = new byte[bytesAvailable];
                        Log.v("packet Bytes", "" + packetBytes);
                        for (int m = 0; m < packetBytes.length; m++)
                            Log.e("checking array", "" + packetBytes[m]);
                        Log.v("packet bytes len", "" + packetBytes.length);
                        mmInputStream.readFully(packetBytes, 0,
                                packetBytes.length);

                        for (int i = 0; i < bytesAvailable; i++) {
                            byte b = packetBytes[i];
                            if (b == delimiter) {
                                byte[] encodedBytes = new byte[readBufferPosition];
                                System.arraycopy(readBuffer, 0,
                                        encodedBytes, 0,
                                        encodedBytes.length);
                                for (int k = 0; k < encodedBytes.length; k++)
                                    Log.v("encoded bytes", ""
                                            + encodedBytes[k]);

                                int[] iarray = new int[encodedBytes.length - 1];
                                int k = 0;
                                for (int j = 0; j < encodedBytes.length - 1; j++)
                                    iarray[k++] = encodedBytes[j] & 0xff;
                                StringBuilder sb = new StringBuilder(
                                        iarray.length);
                                for (int l : iarray)
                                    sb.append(l);
                                for (k = 0; k < iarray.length; k++)
                                    Log.v("iarray", "" + iarray[k]);

                                final String data = sb.toString();
                                // final String data = new String(
                                // encodedBytes, "UTF-8");

                                Log.e("data server", data);

                                readBufferPosition = 0;
                                Log.e("clientserver", "" + data);
                                handler.post(new Runnable() {
                                    public void run() {

                                        myLabel.append("\n" + data);

                                        System.gc();
                                        Log.e("clientserver", "" + data);
                                    }
                                });
                            } else {

                                readBuffer[readBufferPosition++] = b;

                            }
                        }
                    }
                } catch (IOException ex) {

                    stopWorker = true;
                    myLabel.append("\n" + "Try Again!");

                }
            }
        }
    });

    workerThread.start();

}

最初，当微控制器以字符串形式发送数据时，我正在成功读取它。但是当它打开到字节数组时，问题就开始了。有人可以帮我这个吗？谢谢:)）

Answer 1

解决了问题！这是因为分隔符在两端都不匹配。感谢你的关心。：）

Android通过蓝牙与微控制器通信

1 个答案: