以下是一个使用Android Studio编写的简单示例代码，演示如何获取不同手机方向上的指南针：

1. 在AndroidManifest.xml文件中添加以下权限：

2. 创建一个名为MainActivity的Java类，并在onCreate方法中添加以下代码：

import android.Manifest;
import android.content.pm.PackageManager;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

public class MainActivity extends AppCompatActivity implements SensorEventListener, LocationListener {

    private TextView compassTextView;
    private SensorManager sensorManager;
    private Sensor accelerometer;
    private Sensor magnetometer;
    private float[] lastAccelerometer = new float[3];
    private float[] lastMagnetometer = new float[3];
    private boolean isAccelerometerSet = false;
    private boolean isMagnetometerSet = false;
    private float[] rotationMatrix = new float[9];
    private float[] orientation = new float[3];

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

        compassTextView = findViewById(R.id.compassTextView);
        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
        accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        magnetometer = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);

        startLocationUpdates();
    }

    @Override
    protected void onResume() {
        super.onResume();
        sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
        sensorManager.registerListener(this, magnetometer, SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause() {
        super.onPause();
        sensorManager.unregisterListener(this);
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if (event.sensor == accelerometer) {
            System.arraycopy(event.values, 0, lastAccelerometer, 0, event.values.length);
            isAccelerometerSet = true;
        } else if (event.sensor == magnetometer) {
            System.arraycopy(event.values, 0, lastMagnetometer, 0, event.values.length);
            isMagnetometerSet = true;
        }

        if (isAccelerometerSet && isMagnetometerSet) {
            SensorManager.getRotationMatrix(rotationMatrix, null, lastAccelerometer, lastMagnetometer);
            SensorManager.getOrientation(rotationMatrix, orientation);
            float azimuth = (float) Math.toDegrees(orientation[0]);
            if (azimuth < 0) {
                azimuth += 360;
            }

            compassTextView.setText("Azimuth: " + azimuth);
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
    }

    @Override
    public void onLocationChanged(Location location) {
        // 在这里更新位置信息，例如更新经纬度
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

    @Override
    public void onProviderDisabled(String provider) {
    }

    private void startLocationUpdates() {
        LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, 1);
            return;
        }
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    }
}

3. 在res/layout文件夹中创建一个名为activity_main.xml的XML布局文件，并添加以下内容：