Android Question B4X Class life

[laviniut]

Please tell me what is B4X Class life? When is launched Initialize sub and B4XPage_Created sub? Because i need to read a file from disk when a B4XPage load the layout. I mean every time the layout appears on the screen.

 

[Erel]

Terms are important. There is no such thing: "B4X class".

Start with this tutorial and try the example: [B4X] B4XPages - Cross platform and simple framework for managing multiple pages

 

[laviniut]

I made an application with B4XPages and in a B4XPage i need to read a text file with some sensors information. These information need to appear on some buttons on layout. So, when runs Initialize sub and B4XPage_Created sub ? When i switch from a B4XPage to other and back, i need to read this file for layout.

 

[laviniut]

I think i need to call B4XPage_Appear.

 

[Erel]

I think i need to call B4XPage_Appear.

No. You should never call the B4XPages events subs.

The events are explained here: https://www.b4x.com/android/forum/t...or-managing-multiple-pages.118901/post-744867

If you want the layout of a page to be immediately available then call B4XPages.AddPageAndCreate instead of AddPage. This will cause B4XPage_Create to be raised immediately. This is very useful.

 

[laviniut]

Yes, is working. I call B4XPage_Appear to refresh something on a B4XPage layout.

 

[laviniut]

Ok. I mean i use B4XPage_Appear, not call from other page.

 

[laviniut]

Thank you.

 

[Erel]

That is a good solution. It is also possible to directly modify the layout of a different page:

Dim Page2 As B4XPage2 = B4XPages.GetPage("page 2")
Page2.Button14.Text = "Abc"

 

[laviniut]

Thank you.