Exit buttom phone


hello community, I am a novice in the big family of developers.
I have a small concern:
how can I make sure that as soon as I press the button back from the phone I can leave the app?




thank you for your help, I still have a small problem with the error message that appears when I work. it can be from what and how can I fix it?Message


Look at tips 1 and 2.



hello community, I have a small concern about the extenssion “customlistview” I want as soon as I click on an item in the list that I can appeal to any arrangement. how can I do it?