title: Android Studio Programming: How to keep displaying all buttons while one button is clicked?
body: <p>In android studio , I want 3 buttons on top of a page and by clicking a button, it will display corresponding information page (corresponding event took place). However, when displaying corresponding information page, all 3 buttons should still appear to the users. What I mean is that users do not need to use back key if they want to use other buttons. Please can anybody suggest a way on how to do it? Thank you very much in advance!</p>