Can i use TextView.setText() inside of activity class if i pass MainActivity to this class?

Question

I have following Activity:

       public class MapActivity extends Activity implements LocationListener, NavigationView.OnNavigationItemSelectedListener {
    
    TextView mDistance;
 public Navigation navi = new Navigation(this, this);
    
     @Override
        protected void onCreate(Bundle savedInstanceState) {
           
            super.onCreate(savedInstanceState);
    mDistance = findViewById(R.id.distance2);
    
    }
    
   
    }

and class Navigation:

public class Navigation  {

 public Navigation(Context context, MapActivity mapActivity) {
        this.mContext = context;
        this.mapActivity = mapActivity;

    }

 public void updateText(String text){
        mapActivity.mTravelTime.setText(text);
    }
}

Can i update mDistance using mapActivity.mTravelTime.setText(text); from navi class? or i need to do it on runOnUIThread?

Thanks you

Answer 1

It depends on the thread that is executing the call to updateText(text). If you're on the main thread, you'll be good. If you're on a background thread, you'll want to use runOnUIThead(). If you're not sure, assume a background thread to be safe.