How to use backspace on your phone in the app?

[paul_rasmussen123 (Paul Rasmussen)]

Hello!
I would like to know how to go back with the back button ( how to program it) in my app. I would like to have it so, that when it is pressed it goes back to the last screen or main screen (screen 1).

THX!

[Boban (Boban Stojmenovic)]

Use this block

How to switch screens correctly

I see many issues done by users because they switched screens not correct. This below is now just one of many other solutions: [blocks] If you dont open/close screens correct your app will get possible runtime errors. Possible errors: (example) Unable to add window -- token android.os.BinderProxy@45d459c0 is not valid; is your activity running? Iam sure you don’t want that. Then please do it in the future and switch screens correct. General Tips and Tricks for App Inventor/Makeroid …

/Boban

[paul_rasmussen123 (Paul Rasmussen)]

Many thanks!!!