Android Question B4xPages- passing values between pages

LucaMs

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• Oct 7, 2020

• #2

3 ways:

1 - declare a pubblic variable in the Class_Globals of the "destination page"
2 - declare a public sub with parameter in the "destination page"
3 - declare a property in the "destination page"

 

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LucaMs

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• Oct 7, 2020

• #3

Example

 

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• Project.zip

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P

Pepebis

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• Oct 7, 2020

• #4

I'm trying to do this in that way - pass random values to mainpage but it's showing error.

 

Attachments

• passrandom.zip

  16 KB · Views: 225

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M

MikeSW17

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• Oct 7, 2020

• #5

In your passrandom example, in Sub Button1_Click at line 34, you have used the string "pageTwo", it should be "pagTwo" - you have an erroneous "e".
Debug is your friend!
At least, it runs ok for me with that correction.

 

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angel_

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• Oct 7, 2020

• #6

Try this:

B4XMainPage:

'This event will be called once, before the page becomes visible.
Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("MainPage")
    
    pagTwo.Initialize
    B4XPages.AddPageAndCreate("clsPagTwo", pagTwo)
End Sub

Sub passing_tolabel
    Label2.Text = pagTwo.Val

End Sub

Sub Button1_Click
    B4XPages.ShowPage("clsPagTwo")
End Sub

 

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P

Pepebis

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• Oct 8, 2020

• #7

There was a mistake with that pages, navigation. Agree. Changed it already ... but still, it not showing a number on a label at main page after starting the generator on page 2 . Any suggestion?

 

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P

Pepebis

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• Oct 8, 2020

• #8

B4X:

Private Sub B4XPage_Appear
    Label2.Text = pagTwo.Val
End Sub

I was not putting this sub . No is working . Thank you

 

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