How to take latitude and longitd with android button

Good afternoon guys, I am implementing a process that must take the geographical coordinates when clicking a button, I currently have this code to take the coordinates, but it does not work for me: (

import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;

import com.example.pedromendieta.ipal.MainActivity;
import com.example.pedromendieta.ipal.ValidarCumplimiento;

public class MyLocationListener implements LocationListener {

    private ValidarCumplimiento padre;

    public ValidarCumplimiento getMainActivity() {
        return padre;
    }

    public void setMainActivity(ValidarCumplimiento padre) {
        this.padre = padre;
    }

    @Override
    public void onLocationChanged(Location loc) {
        loc.getLatitude();
        loc.getLongitude();
        this.padre.setLocation(loc);
    }

    @Override
    public void onProviderDisabled(String provider) {
        // Este mŽtodo se ejecuta cuando el GPS es desactivado
//        "GPS Desactivado";
    }

    @Override
    public void onProviderEnabled(String provider) {
        // Este mŽtodo se ejecuta cuando el GPS es activado
//        messageTextView.setText("GPS Activado");
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // Este mŽtodo se ejecuta cada vez que se detecta un cambio en el
        // status del proveedor de localizaci—n (GPS)
        // Los diferentes Status son:
        // OUT_OF_SERVICE -> Si el proveedor esta fuera de servicio
        // TEMPORARILY_UNAVAILABLE -> Temp˜ralmente no disponible pero se
        // espera que este disponible en breve
        // AVAILABLE -> Disponible
    }
}

in the class validate compliance in the Oncreate I have this:

LocationManager mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        MyLocationListener mlocListener = new MyLocationListener();
        mlocListener.setMainActivity(this);
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, (LocationListener) mlocListener);

and finally this is the setLocation () method called in the MyLocationListener class in the onLocationChanged event:

public void setLocation(Location loc) {
        //Obtener la direcci—n de la calle a partir de la latitud y la longitud
        if (loc.getLatitude() != 0.0 && loc.getLongitude() != 0.0) {
            try {
                Geocoder geocoder = new Geocoder(this, Locale.getDefault());
                List<Address> list = geocoder.getFromLocation(loc.getLatitude(), loc.getLongitude(), 1);
                lat = loc.getLatitude() + "";
                lng = loc.getLongitude() + "";
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

I hope you can get me out of trouble, thank you very much