Android Development Tools, how to add a dropdown list to a form on button click?

Question

Java

There is a form, there is a button on it, by clicking on the button, a spinner should be added to the form. How is it better and easier to implement?

Answer 1

Initially, you add and hide the spinner, and when you click, just call setVisibility(View.VISIBLE);
Or Outside the handler, declare a variable for the spinner, and when pressed, check whether it is null or not, if null then create