如何在android应用程序中通过短信发送我们的当前位置或gps和网络的上次位置？

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements LocationListener {

    private LocationManager locationManager;

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

        // 检查发送短信权限
        if (checkSelfPermission(Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
            requestPermissions(new String[]{Manifest.permission.SEND_SMS}, 1);
        }

        // 获取位置信息
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
        }
    }

    @Override
    public void onLocationChanged(Location location) {
        // 获取到位置信息后发送短信
        String message = "当前位置：\n经度：" + location.getLongitude() + "\n纬度：" + location.getLatitude();
        sendSMS("手机号码", message);
    }

    private void sendSMS(String phoneNumber, String message) {
        try {
            SmsManager smsManager = SmsManager.getDefault();
            smsManager.sendTextMessage(phoneNumber, null, message, null, null);
            Toast.makeText(getApplicationContext(), "短信发送成功", Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            Toast.makeText(getApplicationContext(), "短信发送失败", Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }
    }

    // 其他LocationListener的回调方法
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {}

    @Override
    public void onProviderEnabled(String provider) {}

    @Override
    public void onProviderDisabled(String provider) {}
}