Android Question [B4xPages] How to always run a procedure when starting the program?

[vecino]

Hi, I need to run something whenever the program starts.
In the "Created" it runs the first time, if I close the program and reopen it, it doesn't run.
In the "Appair" it is not valid because it is executed when the page changes and returns to the first one.
Where do I put it?
It is to ask for a password, show a splash, etc.
In B4XMainPage I can't find the solution.
Do I put the code in the "Activiy Main"?
Thank you.

 

[makis_best]

Have you think about "Initialize"

 

[vecino]

Hello, where is "Initialize"?

 

[MikeSW17]

Right Here: (On a new B4X project)

 

[LucaMs]

B4XMain page (class)

Public Sub Initialize

 

[vecino]

Here?

I believed that with B4XPage you should not write code in "Main".

 

[LucaMs]

I believed that with B4XPage you should not write code in "Main".

It is almost never necessary to write code in ACTIVITY Main.

B4XMain page (class)

Public Sub Initialize

B4XMainPage (which is a class).

 

[makis_best]

Don't write code on Main Page, only in B4XMainPage and there use Initialize.
On main page write code only for extreme specific cases.

 

[vecino]

It also doesn't work in Initialize :/
The first time it does run showsplash and other things.
Then I close, I open ... and it doesn't go through Initialize.
I have put "logs" to follow it and you can see that it does not go through Initialize.

 

[makis_best]

When you say close... you mean that you exit application?
The Logs are set to main or B4XMainPage?

Copy the text of your Log and paste it here using <code> </code>
Don't post it here as picture.

 

[LucaMs]

I think you need something like this:
https://www.b4x.com/android/forum/threads/solved-b4x-mainpage-firsttime.124457/post-777152
(to show the splash screen)

 

[vecino]

When you say close... you mean that you exit application?

Yes, exit application.

 

[vecino]

I think you need something like this:
https://www.b4x.com/android/forum/threads/solved-b4x-mainpage-firsttime.124457/post-777152
(to show the splash screen)

It is exactly the same case.
When you start the application you must ask for a password (among other things).
If I exit the application and enter again, it does not go through "Create", so it does not ask for the password.

I think Erel is not right in what he says in that other thread (now I will get hits from all sides )
In the activities the "Create" is always executed when you start the application, if you exit the application and re-enter then it runs again create (although in that case is not "firstime").
However, with B4Xpages this does not happen, there is no other solution than to use a variable, as discussed in this other thread.

That's the conclusion I've reached after many tests.
Hopefully there is a more appropriate solution.
Thank you.

 

[LucaMs]

Hopefully there is a more appropriate solution.

For your case, I would have a better solution: create a page that serves exclusively to show the splash screen and for the user authentication.

 

[vecino]

Yes, but how do you make it always run when you start the application?
Even if you leave the application and return to the moment, always run.

 

[LucaMs]

Yes, but how do you make it always run when you start the application?
Even if you leave the application and return to the moment, always run.

Private Sub B4XPage_Created (Root1 As B4XView)
    ' ...
    '...  
    B4XPages.ShowPage("pagLogin")
End Sub

 

[vecino]

But that's the problem, isn't it?
That "Created" is not executed after leaving the application and entering again, so that other page would not be shown either.

 

[LucaMs]

Try this (not great, quickly written)

 

[vecino]

It's the same problem, it doesn't ask for the "login" again because it doesn't go through "Created", except the first time.

 

[LucaMs]

Why do you need to login (and show the splash screen) twice?

If the user forces the app to close, or the operating system kills it or when the user turns off the device and turns it back on the next day, the splash screen and login will be displayed.