Setting Focus on Popup Window
I have a question. I have a mobile screen that scrolls. On that screen I have a hotspot that can show a hidden “popup” window when clicked. My question is how do I make the “focus” remain on that popup window until the user clicks a close button in the window? What I mean by “focus” is that users can’t scroll, click any other buttons, or perform any other actions in the app until they click the close button in the “popup” window?
Is this possible? If so, how do I go about that?