在Adroid studio中写一段基于STMF103ZET6单片机通过蓝牙发送水温并接收实时显示的代码

抱歉，Android Studio主要是用来开发Android应用程序的集成开发环境（IDE），不适合直接编写单片机程序。而且单片机程序需要使用C语言或汇编语言等低级语言进行编写，也需要使用单片机开发环境进行编译、下载和调试。

如果您想通过Android设备与单片机进行通信，可以使用Android设备上的蓝牙模块与单片机上的蓝牙模块进行通信。Android设备可以通过蓝牙串口协议（SPP）与单片机进行通信，发送和接收数据。以下是一个简单的Android应用程序的示例代码，可以通过蓝牙向单片机发送水温并显示实时数据：

public class MainActivity extends AppCompatActivity {
    private BluetoothAdapter mBluetoothAdapter;
    private BluetoothSocket mBluetoothSocket;
    private OutputStream mOutputStream;
    private InputStream mInputStream;
    private TextView mTextView;

    private static final int REQUEST_ENABLE_BT = 1;
    private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
    private static final String DEVICE_ADDRESS = "00:11:22:33:44:55";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTextView = (TextView) findViewById(R.id.textview);

        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        if (mBluetoothAdapter == null) {
            Toast.makeText(this, "Device does not support Bluetooth", Toast.LENGTH_SHORT).show();
        } else {
            if (!mBluetoothAdapter.isEnabled()) {
                Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
            } else {
                connectToDevice();
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_ENABLE_BT) {
            if (resultCode == RESULT_OK) {
                connectToDevice();
            } else {
                Toast.makeText(this, "Bluetooth must be enabled to connect to device", Toast.LENGTH_SHORT).show();
            }
        }
    }

    private void connectToDevice() {
        BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(DEVICE_ADDRESS);
        try {
            mBluetoothSocket = device.createRfcommSocketToServiceRecord(MY_UUID);
            mBluetoothSocket.connect();
            mOutputStream = mBluetoothSocket.getOutputStream();
            mInputStream = mBluetoothSocket.getInputStream();
            startReadingData();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void startReadingData() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                byte[] buffer = new byte[1024];
                int bytes;

                while (true) {
                    try {
                        bytes = mInputStream.read(buffer);
                        final String data = new String(buffer, 0, bytes);
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                mTextView.setText(data);
                            }
                        });
                    } catch (IOException e) {
                        e.printStackTrace();
                        break;
                    }
                }
            }
        }).start();
    }

    public void sendTemperature(View view) {
        // Replace with your own temperature reading code
        int temperature = 25;

        try {
            mOutputStream.write(temperature);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        try {
            mBluetoothSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

需要注意，上述代码仅仅是一个示例，您需要根据自己的需求和单片机的实际情况进行修改和调试。同时，您还需要在单片机端编写程序来接收来自Android设备的数据，并进行相应的处理和显示。