android - 如何在android中接收完整的arduino字符串

问题描述

我正在为我的 arduino 传感器做一个应用程序我想知道如何通过蓝牙实际从 arduino 获取数据到 android studio，因为在我的 arduino 中我放了Serial.println("occupied")但是当在 android 中接收时它以某种方式与一些数字/字节混合，如“o2cuppied”或否则它将在 logcat 中单独接收。我不知道它有什么问题。

Arduino代码：

void setup() {
  serial1.begin(9600); //for the bluetooth module
}
void loop() {
 
  //send data to Bluetooth module//
  if (dist[0] < dist_threshold) {
    serial1.print("Occupied\n");
   
  }
 if (dist[1] < dist_threshold) {
    
    serial1.print("Occupied2\n");
    
  }

安卓

 @Override
    protected void onCreate(Bundle savedInstanceState) {
 h = new Handler() {
            public void handleMessage(android.os.Message msg) {

                switch (msg.what) {
                    case RECEIVE_MESSAGE:                             // if receive massage
                        byte[] readBuf = (byte[]) msg.obj;
                        String strIncom = new String(readBuf, 0, msg.arg1);   // create string from bytes array
                                                     // and clear
                            txtArduino.setText("Data from Arduino: " + strIncom);

                            break;
                }
            }
        };
}

private class ConnectedThread extends Thread {
        private final BluetoothSocket bluetoothSocket;
        private final InputStream mmInStream;
        private final OutputStream mmOutStream;

        public ConnectedThread(BluetoothSocket socket) {
            InputStream tmpIn = null;
            OutputStream tmpOut = null;
            bluetoothSocket = socket;

            // Get the input and output streams, using temp objects because
            // member streams are final
            try {
                tmpIn = socket.getInputStream();
                tmpOut = socket.getOutputStream();
            } catch (IOException e) {
                e.printStackTrace();
            }

            mmInStream = tmpIn;
            mmOutStream = tmpOut;
        }

        public void run() {
            byte[] buffer = new byte[1024];  // buffer store for the stream
            int bytes; // bytes returned from read()

            // Keep listening to the InputStream until an exception occurs
            while (true) {
                try {
                    // Read from the InputStream
                    bytes = mmInStream.read(buffer);        // Get number of bytes and message in "buffer"
                    String incomingMessage = new String(buffer, 0, bytes);
                    Log.d(TAG, "InputStream: " + incomingMessage);
                    h.obtainMessage(RECEIVE_MESSAGE, bytes, -1, buffer).sendToTarget(); // Send to message queue Handler
                   
                } catch (IOException e) {
                    Log.e(TAG, "write: Error reading Input Stream. " + e.getMessage() );
                    break;
                }
            }
        }
    }

日志猫

2019-11-27 12:28:13.505 12733-12893/com.example.fyp D/MainActivity: InputStream: O

2019-11-27 12:28:13.508 12733-12893/com.example.fyp D/MainActivity: InputStream: ccupied

标签： androidarduinoandroid-bluetooth

android - 如何在android中接收完整的arduino字符串

问题描述

解决方案

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