public class MainActivity extends Activity implements LocationListener {
    protected LocationManager locationManager;
    TextView coordenadas;
    TextView direccion;
    Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

locationManager = (LocationManager) getSystemService(Context.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,}, 1000);
} else {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 1000, this);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1000, this);

}

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

button = (Button) findViewById(R.id.btnEnviar);

button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {

try {
TextView co = (TextView) findViewById(R.id.txtCoordenadas);
TextView di = (TextView) findViewById(R.id.txtDireccion);
String messageToSend = co.getText().toString();
String messageToSend2 = di.getText().toString();
if (ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
Manifest.permission.SEND_SMS)) {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.SEND_SMS}, 1);
} else {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.SEND_SMS}, 1);
}
}else {
String number = "Aquí tu numero de celular";

SmsManager.getDefault().sendTextMessage(number, null, messageToSend2 + "n" +
messageToSend, null, null);
}
    Toast.makeText(getApplicationContext(), "Mensaje Enviado!",
    Toast.LENGTH_LONG).show();
} catch (Exception e) {
    Toast.makeText(getApplicationContext(), "Fallo el envio!",
    Toast.LENGTH_LONG).show();
e.printStackTrace();
 }
 }
 });
}

@Override
public void onLocationChanged(Location location) {
coordenadas = (TextView) findViewById(R.id.txtCoordenadas);
direccion = (TextView) findViewById(R.id.txtDireccion);
coordenadas.setText("Mi ubicacion actual es: " + "n Lat = "
+ location.getLatitude() + "n Long = " + location.getLongitude());
this.setLocation(location);
}
public void setLocation(Location location) {
//Obtener la direccion de la calle a partir de la latitud y la longitud
if (location.getLatitude() != 0.0 && location.getLongitude() != 0.0) {
try {
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> list = geocoder.getFromLocation(
location.getLatitude(), location.getLongitude(), 1);
if (!list.isEmpty()) {
Address DirCalle = list.get(0);
direccion.setText("Mi direccion es: n"
+ DirCalle.getAddressLine(0));
 }

} catch (IOException e) {
e.printStackTrace();
 }
  }
}

@Override
public void onProviderDisabled(String provider) {
Log.d("Latitude","disable");
}

@Override
public void onProviderEnabled(String provider) {
Log.d("Latitude","enable");

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d("Latitude","status");
 }

}