Assessing component from different screen

i have spinner component and i want to assess it from different screen.
and i also want the user to be able to add item to the spinner.

HOWTO: Transfer data between screens using TinyDB Demo.

HOWTO: Transfer data between screens using Start Value Demo.

Use different screens wisely

If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a while...      
The recommended method of switching screens in App Inventor
(Thanks Taifun)
Also see demo: multiscreen.aia
1 Like

Do you want to access the Component or the item the user has selected?

is the component i want to assess

Hello Opk

I suggest you use Virtual Screens. That’s a “real” screen populated with screen-sized Vertical Arrangements, each Arrangement = 1 Virtual Screen. This way, you have access to all components in the same set of Blocks.

For the User to add items to a Spinner:

  1. Keep a Blocks List as the source of the items
  2. Provide the User with a Text Component or pop-up input to enter the name of a new item.
  3. Add that new item to the Blocks List.
  4. Clear the Spinner’s list, and repopulate it with the Blocks List.
  5. The Blocks List can be preserved by saving it in TinyDB.
1 Like