How do I change the main screen to another one?

[gordonlu310]

Hello Steven,

The main screen (by default) is Screen1. When the user opens an app, by default, the first screen that will be displayed is Screen1. App Inventor does not offer an option to directly change it in the Builder.

It is technically possible to set the main screen to another screen by decompiling the AIA file. I found a YouTube video (likely by @Hossein) of a step-by-step guide on changing the main screen: https://www.youtube.com/watch?v=XvSiD-iA17Y. However, this might be a bit tricky, and resulted in some corrupted projects before (I can't find them somehow). If you don't want to do it youself, you can upload your project here and I can have a look and try.

(Canned Reply: ABG- Export & Upload .aia)
Export your .aia file and upload it here.

You can also try copying and pasting screens around. Again this may result in a corrupted project if you have too many components. You can make a copy of the project (Projects > Save As), then try it on the copy.

Copy a Screen within MIT App Inventor

This tutorial will show you how to copy a screen in MIT App Inventor. This is useful when you need to have similar screens in your app. The same thing applies to duplicating blocks or components in your project. Go to the screen that you want to copy. Select the screen in the Components list, which is betweeen the Viewer and Properties. Hit the 'Copy' combination on your PC (for example, Windows is Ctrl+C) Create a new screen. Your copied components will place here. Hit the 'Paste…

Hope this helps.