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Strange App.OnStart variable not setting!

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Posted on by Community Power Pla... Microsoft Employee

Check out this variable I have put in my App.OnStart ...

Set(vrblAppDetails,
{
ID: "abcd1234-a567-b890-1a2b-123abc456def"
,Width: App.Width
,Height: App.Height
,OnlineStatus: true
,Status: true
,ScreenSize: Screen_Home.Size
,MenuVisible: !(Screen_Home.Size <= 2)
,MobileDevice: Screen_Home.Size <= 2
}
);

Now for some reason, its only saving the data for MobileDevice and nothing else.

When I run this in a button and it works like clock work! I just don't get it.

Run this and see if you get the same result as me .. really strange.

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Building Power Apps

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Pstork1 69,599 Most Valuable Professional on at

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The following works for me in the editor preview. Since its not formatted the way the automatic text formatting does it I suspect you added your own carriage returns for readability. That causes issues. The other issue I would see is that most of these values won't be available until the app spins up. For example, the size of Screen_Home won't be set until the screen is initialized. That isn't guaranteed to have happened when OnStart runs. You might get better results if you put it in OnVisible of the Home screen.

Set( vrblAppDetails, { ID: "abcd1234-a567-b890-1a2b-123abc456def", Width: App.Width, Height: App.Height, OnlineStatus: true, Status: true, ScreenSize: Screen_Home.Size, MenuVisible: !(Screen_Home.Size <= 2), MobileDevice: Screen_Home.Size <= 2 } );

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Community Power Pla... Microsoft Employee on at

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Hi @Pstork1

Issue solved. It was not picking up the screen size on AppStart because I had it looking at the wrong screen.

This is what I was using, 'Screen_Home.Size' .. but this is NOT my 1st screen. This is my second screen.
My 1st screen is 'Screen_Welcome' .. so when i switched the code to point to my 1st screen, 'Screen_Welcome.Size', it worked like a charm, and I have now the slickest, most dynamic template that resizes across all mobile screens, tablets and desktop (including those big 24 inch plus screens) and changes the menu dependant on what device is being used. The main thing is this, I only have 1 template to maintain 😀

So the finished App.OnStart code is now ..

Set(vrblAppDetails, { ID: "abcd1234-a567-b890-1a2b-123abc456def" ,Width: App.Width ,Height: App.Height ,OnlineStatus: true ,Status: true ,ScreenSize: Screen_Welcome.Size ,MenuVisible: !(Screen_Welcome.Size <= 2) ,MobileDevice: Screen_Welcome.Size <= 2 } );

... and it works like a charm.

By the way, carriage returns have never been an issue for me.

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