B4J Question [B4Pages]What is the best way to determine if a given page id exists?

[William Lancee]

I've tried a variety of ways, none elegant, and a Try block is the ugliest of all.
Note that a page can exist without being on the stack.

 

[DonManfred]

Maybe this?

    Dim page As B4XPageInfo = B4XPages.GetManager.GetPage("PageIdToCheck")
    If page.IsInitialized Then
        
    End If

 

[William Lancee]

The first line throws an error when "PageIdToCheck" does not exist.
Catch 22.

 

[William Lancee]

For now, I'll keep my own global B4XSet with page ids in B4XMainPage, and check with .Contains.
There is such a set in B4XPageManger, but it is not Public.

 

[Erel]

How can a page id not exist? Add all the pages when the program is started. They will only be "created" when needed.

 

[William Lancee]

In this project, the pages are created based on various decisions the user makes. Moreover, the initialization of the page is quite involved.
So at first I thought that I would not initialize the page instance until needed. Hence my question.

However, your answer made me take an hour and move the dynamic parts out of initialization and into create. It works very well.
Thank you.