calling from Activity

[rossati]

Hello

I am not able to communicate from activity i.e. I have a Main activity which active another Activity (which generate a multiwidget form) and I would manage some events by main Activity, so in Main I have something like this (is only the last of my tries):

Sub handleChange3(wdg As Object,parms() As Object) As String
If parms(0) = "Dollar" Then
Dim txt As EditText
txt = wdg
Msgbox("Dollar: " & txt.Text,"")
End If
End Sub

Msgbox crashes on Null pointer exception.

In the calling activity I have:

Sub txt_FocusChanged (HasFocus As Boolean)
If Not(HasFocus) Then
fh_sender = Sender
Log("*************** " & fh_sender)
CallSub3(fh_externalCaller,"handleChange3",Sender,Array As Object ("Dollar","","LF"))
End If
End Sub


Besides I have discovered that if the activity is not active, from its Functions we do not have access to global variables of the Activity active, is this correct?

Thanks

John Rossati

 

[Erel]

CallSubDelayed is the preferred method to interact with a different module.
Using CallSubDelayed to interact between activities and services

Variables visibility:
Variables and Subs visibility

 

[rossati]

Thanks Erel

your suggestion works but resume Main Activity.
I try a cleaner solution putting my handler in a code module.

Question can I call via callSub a sub in a codeModule?

John Rossati

 

[Erel]

It is not possible to use CallSub with code modules (it is also not really needed as you can call the sub directly).

 

[rossati]

Thanks

it is also not really needed as you can call the sub directly

yes and not, I would like to parameterize certain actions, so as to allow customization of my form generator.

John Rossati