package com.example.florian.ex36;




        import android.Manifest;
        import android.content.Context;
        import android.content.pm.PackageManager;
        import android.location.Location;
        import android.location.LocationListener;
        import android.location.LocationManager;
        import android.support.v4.app.ActivityCompat;
        import android.support.v4.content.ContextCompat;
        import android.support.v7.app.AppCompatActivity;
        import android.os.Bundle;
        import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    // private fields of the class
    private TextView tv_lat, tv_long;
    private LocationManager lm;

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

        // pull the textviews from the xml and get access to the location manager
        tv_lat = (TextView) findViewById(R.id.tv_lat);
        tv_long = (TextView) findViewById(R.id.tv_long);
        lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    }

    // $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$


    // private method that will add a location listener to the location manager
    private void addLocationListener() {
        int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
        if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) {

            } else {
                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
            }
        }

        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, new LocationListener() {

            @Override
            public void onLocationChanged(Location location) {
            }

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

            }

            @Override
            public void onProviderEnabled(String provider) {
                if (provider == LocationManager.GPS_PROVIDER) {
                    if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.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;
                    }
                    Location l = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                    if (l != null) {
                        tv_lat.setText("Latitude: "+l.getLatitude());
                        tv_long.setText("Longitude: "+l.getLongitude());
                    }
                }
            }

            @Override
            public void onProviderDisabled(String provider) {
                if (provider == LocationManager.GPS_PROVIDER) {
                    tv_lat.setText("N/A");
                    tv_long.setText("N/A");
                }
            }
        });
    }
}