Android + Arduino蓝牙数据传输

// 创建BluetoothSocket
BluetoothSocket socket = new BluetoothSocket(BluetoothSocket.TRANSPORT_LE) {
    @Override
    public void onAvailable(BluetoothDevice device) {
        // 设备已连接，开始读取数据
    }

    @Override
    public void onReceive(BluetoothDevice device, byte[] data) {
        // 接收到来自Arduino的数据
    }

    @Override
    public void onClose(BluetoothDevice device) {
        // 连接关闭，开始重新连接
    }
};

// connect()方法，传入BluetoothSocket实例
socket.connect();

// 读取数据，使用InputStream读取字节数组数据
InputStream in = socket.getInputStream();
byte[] buffer = new byte[1024];
int len = in.read(buffer);
in.close();

// 解码字节数组数据，并打印到控制台
String str = new String(buffer, StandardCharsets.UTF_8);
Log.d("ArduinoData", str);

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(2, 3); // RX, TX

void setup() {
  Serial.begin(9600);
  bluetooth.begin(9600);
}

void loop() {
  if (bluetooth.available() > 0) {
    char input = bluetooth.read();
    switch (input) {
      case 'a':
        // 旋转马达
        break;
      case 'b':
        // 蜂鸣器
        break;
      // ...添加更多指令
    }
  }
}

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(2, 3); // RX, TX
int sensorData;

void setup() {
  Serial.begin(9600);
  bluetooth.begin(9600);
}

void loop() {
  // 读取传感器数据
  sensorData = analogRead(A0);

  // 发送数据到Android端
  bluetooth.write(sensorData);
  
  delay(100);
}

// 创建ListView
ListView listView = findViewById(R.id.listView);

// 创建ArrayAdapter
ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
        android.R.layout.simple_list_item_1, android.R.id.text1);

// 将接收到的数据添加到Adapter
for (String data : dataList) {
    adapter.add(data);
}

// 设置ListView的Adapter
listView.setAdapter(adapter);

@Override

public void onServiceConnected(ComponentName name, IBinder service) {

    mService = ((MyService.LocalBinder) service).getService();

}

@Override

public void onServiceDisconnected(ComponentName name) {

    mService = null;

}

Intent intent = new Intent(this, MyService.class);

intent.putExtra(MyService.EXTRA_