Using Variables On Multiple Screens

[aRTie]

How do you use the same variable on multiple screens?

[ABG]

You can't.

Instead, use stacked Vertical Arrangements, and make them Visible only one at a time.

[aRTie]

How do you do that?

[ABG]

FAQ Section: Screens

Screen Design Advice Building apps with many screens Many similar screens Universal screen sizes Screen Switching Switch screens correctly - 2 methods - @Anke Aug '23 Choosing a Switching Technique - @Anke Nov 22 Effects of Companion on Screen and app closing - Boban How do I open Screen1? - vknow360 and others How do I switch screens? (manager) - Taifun How to start from Screen2 Switching screens without a manager Screen Manipulation Copy and Rename Screens - Tim Houser How do I D…

[Alaqmar_Bohori]

You can also use tinyDB to transport the value of a variable between screens.
See here:

FAQ Section: TinyDB

TinyDB AI2 Help page - MIT TinyDB Namespace Recovery - KIO4 etc. TinyDB after uninstall of an APP Book Collection in TinyDB(Hossein) How to save Max Scores on TinyDB - ABG Save Base64 of Image Files in TinyDB using extension - Juan Antonio Simulate Multiple TinyDBs with an extension - Juan Antonio Student names and Emails - TIMAI2 The Tiniest TinyDb Tutorial (Richard) TinyDB Limits TinyDB preloader extension - Juan Antonio History of TinyDB NameSpaces - Patton

[Taifun]

@ABG

use stacked Vertical Arrangements

see tip 1 here

General Tips and Tricks for App Inventor

This list was made by @Taifun Use different screens wisely Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG's post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed... If you decided to use different screens, then you should switch them correctly, else you …

Taifun

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Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

[Electro_Developer]

You can share data between two screens by using TinyDB. It would help if you had the same database for both screens (same name). On one end you push the data into the database with a unique tag. Then on another end, you call back using the same tag.

http://www.appinventor.org/content/howDoYou/screens/share