Android Question Condition if an activity is loaded

ciginfo · Jan 23, 2021

Hello
Is it possible to apply a condition if an activity is loaded?
I have a button which must have a different action depending on whether this or that activity is loaded.
Example, like:
Sub Button1_Click
If activity(activity name) is loaded Then
Mylabel.text = "Hello"
end if
End Sub

What can be the syntax if it is possible?
Thank you

sfsameer · Jan 23, 2021

You could do the following :

in the Page 2

B4X:

Sub Process_Globals
     Dim WhichActivityIsLoaded As String
End Sub

Sub Btn_Click
    Try
        If WhichActivityIsLoaded="Page1" Then
            lbl.text="Hello"
        End If
       
       
    Catch
        Log(LastException)
    End Try
End Sub

and in the page 1 :

B4X:

Sub Activity_Create(FirstTime As Boolean)
   
    If FirstTime Then
        Page2.WhichActivityIsLoaded = "Page 1"
    End If
end sub

For me i always make code module called : GlobalParameters that contains the Parameters that i want to be globally used in the app, it's really helpful

Erel · Jan 24, 2021

Please use [code]code here...[/code] tags when posting code.

The sooner you switch to B4XPages, the sooner things will become simpler.

You can check if an activity is in the foreground with IsPaused(Activity).
If you want to know whether the activity was created at least once then use a process global variable as answered above.

Android Question Condition if an activity is loaded

ciginfo

Well-Known Member

sfsameer

Well-Known Member

Erel

B4X founder

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Android Question Condition if an activity is loaded

ciginfo

Well-Known Member

sfsameer

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Erel

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