Question

I have a camera class that holds a picture of the camera using SurfaceHolder and so on. I enter the above SurfaceView TextView. and that I wanted to ask is how can I update the text in TextView with latitude and longitude values ​​I get from GPS?
where I put coding to get the current position and updates the position

Answer 1

Do the below changes to your code and try.

        textView = (TextView)findViewById(R.id.textViewId);

        LocationManager mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        mlocManager.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() {
            @Override
            public void onLocationChanged(Location loc) {
                String location = "Last known location\nLatitude = "+loc.getLatitude()+"\nLongitude = "+loc.getLongitude();
                textView.setText(location);
            }
            @Override
            public void onProviderDisabled(String provider) {
                Toast.makeText( getApplicationContext(), "GPS Disabled", Toast.LENGTH_SHORT ).show();
            }
            @Override
            public void onProviderEnabled(String provider) {
                Toast.makeText( getApplicationContext(), "GPS Enabled", Toast.LENGTH_SHORT ).show();                
            }
            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
                Toast.makeText( getApplicationContext(), "GPS Status Changed", Toast.LENGTH_SHORT ).show();             
            }           
        });

In manifest file you have to use permissions as below

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION">

I hope you understand and it help you.