How to add main screen

[Mike Ang]

Hi All, am trying to find a solution below but not much result.

I had created and completed the Screen 1 .

Now i realize more screen like screen 2 & 3 & 4 is required, so i wanted to add a  initial screen where all screen 1,2 & 3 go to button can easily be contain.

so i was wondering how can i add a screen (before screen 1).

Thank you all for helping out. hope can get some advises soon.

[Taifun]

• How to rename a Screen using the Project Merger Tool by Juan Antonio
• File Assistant to copy and rename Screens by Tim
• PC Utility to change screen names and swap Screen1 by GeoffState
• How to copy screens by Scott and a video by Hossein

Taifun

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

[Tony Richards]

You don't need to make multiple screens, just create and overlap several different screen1

arrangements and play with their visibility property, as done in the attached project.

Hope this helps.

Tony

[Tony Richards]

P.S. For some reason the first block, which is executed on Screen1 initialization, refers to TabScreen1 four times,

when each successive SET block should refer to TabScreen1, then TabScreen2, then TabScreen3 and finally TabScreen4.

Sorry about that, dont know how that crept in.

Fortunately, each of the tabs is marked visible in the designer, so that is their initial state on Screen1 initialization anyway.

[Ghica]

Tony,

Your example could be a bit simpler, like this:

I left the Initialize block in, but you do not need it. 

In a real case you would have a procedure for initializing each "screen", for example initScreen3 and then you would call this procedure for both (for screen 3) tabScreen3 and btnScreen3.

You need to avoid duplication as much as possible. Now it is simple, but for a large app, you will have difficult bugs if you do not do that.

See also http://ai2.appinventor.mit.edu/reference/other/manyscreens.html

Cheers, Ghica.

[TimAI2]

@ Tony

or

HOWTO: Yet Another Tabbed Screens Demo