1.首先在AndroidManifest.xml文件中添加发送短信和获取位置信息的权限：

2.创建一个包含发送短信和获取位置信息的Activity：

public class MainActivity extends AppCompatActivity { private static final int MY_PERMISSIONS_REQUEST_SEND_SMS = 0; private static final int MY_PERMISSIONS_REQUEST_LOCATION = 1;

private LocationManager locationManager;
private String locationProvider;
private int locationPermissionGranted;

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

    Button button = findViewById(R.id.button);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (ContextCompat.checkSelfPermission(MainActivity.this,
                    Manifest.permission.SEND_SMS)
                    != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[]{Manifest.permission.SEND_SMS},
                        MY_PERMISSIONS_REQUEST_SEND_SMS);
            }else {
                sendSMS();
            }

            if (ContextCompat.checkSelfPermission(MainActivity.this,
                    Manifest.permission.ACCESS_COARSE_LOCATION)
                    != PackageManager.PERMISSION_GRANTED
                    || ContextCompat.checkSelfPermission(MainActivity.this,
                    Manifest.permission.ACCESS_FINE_LOCATION)
                    != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[]{Manifest.permission.ACCESS_COARSE_LOCATION,
                                Manifest.permission.ACCESS_FINE_LOCATION},
                        MY_PERMISSIONS_REQUEST_LOCATION);
            }else {
                getLocation();
            }
        }
    });
}

private void sendSMS() {
    SmsManager smsManager = SmsManager.getDefault();
    String location = getLocationString();
    smsManager.sendTextMessage("12345", null, location, null, null);
    Toast.makeText(this, "短信发送成功！", Toast.LENGTH_SHORT).show();
}

private void getLocation() {
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_COARSE);
    locationProvider = locationManager.getBestProvider(criteria, true);

    Location location = null;
    if (locationManager != null) {
        location = locationManager.getLastKnownLocation(locationProvider