Android Question b4x pages ShowPageAndRemovePreviousPages

josejad

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• Feb 12, 2021

• #2

Not sure if it's the same problem, do you have v1.08 of B4XPages library?

[B4XPages] How to quickly load a B4XPage without showing MainPage

Hi: I'm starting to play with B4XPages, just adapting this example It has a login page an then 2 others. What I want to do is to save the logged user (i.e. in KVS) and, from then on, once you start the app check if the user is already logged, then go to the next page instead of B4XMainPage...

www.b4x.com

 

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Addo

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• Feb 12, 2021

• #3

I have the internal library b4x 1.07 should search for this 1.08 version?

 

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josejad

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• Feb 12, 2021

• #4

Yes, try it. In the link I've posted you can find it.
Or have you updated to B4A 10.6? Maybe it already come with B4XPages 1.08

 

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Addo

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• Feb 12, 2021

• #5

going to try that and will post a feedback

 

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Addo

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• Feb 13, 2021

• #6

I have installed the latest b4x version and now I have b4xpages 1.08
but I still have the same behavior I had to press the back button in order to show page2

 

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Addo

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• Feb 13, 2021

• #7

I figure it out i should have called loadMysecondpage

in the event B4XPage_Appear , but I really don't understand why was that needed what is the difference between calling it in Create event or in Appear event ..

 

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LucaMs

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• Feb 13, 2021

• #8

Do not create B4XPage_Appear, call it so:

B4X:

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("Page1")
    Page2.Initialize
    B4XPages.AddPage("Page2", Page2)
    'Here i will call sub to show page2
    CallSubDelayed(Me, "loadMysecondpage")
    
End sub

 

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M

Mahares

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• Feb 13, 2021

• #9

LucaMs said:

Do not create B4XPage_Appear, call it so:

Click to expand...

PassionDEV said:

I figure it out i should have called loadMysecondpage

Click to expand...

Something like this would have also worked. What do you think @LucaMs the only 'Mario'

B4X:

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("Page1")
    P2.Initialize
    B4XPages.AddPage("Page2", P2)
    Sleep(0)
    B4XPages.ShowPageAndRemovePreviousPages("Page2")
End Sub

 

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LucaMs

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• Feb 13, 2021

• #10

I don't know if he wants to call his routine more than once, it is declared as Public and in his real project could contain other stuff.

Anyway, at that time of night I read rarely, quickly and my two neurons are already asleep (although the suggestion works, using Sleep is easier here)

 

Last edited: Feb 13, 2021

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M

Mahares

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• Feb 13, 2021

• #11

LucaMs said:

I don't know if he wants to call his routine more than once

Click to expand...

He could still call it after Sleep:

B4X:

Sleep(0)
loadMysecondpage

 

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Addo

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• Feb 14, 2021

• #12

@LucaMs @Mahares both solutions won't help its only work in appear event which I don't understand why.

 

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Erel

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• Feb 14, 2021

• #13

You should create a small project that demonstrates it.

 

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Addo

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• Feb 14, 2021

• #14

Erel said:

You should create a small project that demonstrates it.

Click to expand...

here is a sample that should demonstrate that behavior. The second-page won't show up in that example if it's called in
B4XPage_Created event unless you press the back button on the phone

 

Attachments

• Test.zip

  10.6 KB · Views: 254

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Erel

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• Feb 14, 2021

• #15

(Use the comment at the top to create the zip.)

You are doing something unexpected. If you want to show the second page without showing the first page then add page2 in the Initialize sub. No need to call Show at all.

 

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