Android Question Activities and Variables.

[John Sturt]

Hello I seem to have missed something because this is driving me nuts.

I have two activities and want to pass a string from one to the other.

Essentially i have this:
Activity One

Sub Process+_Globals
Dim Myvalue As String
end Sub
...
Sub Whatever
Start Activity2
end Sub

Activity 2
When i try to assign or even print to the log
all i get is variable undeclareed

Any Help?

 

[klaus]

What's the name of Activity1 ?
In Activity2 you must call the variable NameOfActivity1.Myvalue.
If Activity1 is Main then you must use Main.Myvariable in Activita2 !

 

[John Sturt]

Thank You for your reply but the problem i am having is not a StartActivity it
is a passing Variable problem.

In Activity1 i write
sub process_globals
dim MyValue As String
end Sub

I then go on to call Activity 2
and try to access "MyValue" from within Activity 2
for example
Log (MyValue)

At the debug rapid stage i get the error
Undeclared variable MyValue

Any help?

 

[mangojack]

John .. Please use [code ] tags when posting code ... easier to read. (see images)

As Klaus stated , you must reference the activity name where you declared the variable.
you have 2 Activities.. 'Activity1' and 'Activity2'

In Activity1

Sub Process_Globals
  Dim MyValue As String = "ABC"
End Sub

Then in Activity2 ..

Log (Activity1.MyValue) '...make reference to the activity the variable was dimed.

 

[John Sturt]

Thank You both that now makes a lot of sense..

 

[mangojack]

Your welcome .. May you B4A experience be long and fruitful ...

 

[ELCHARO]

HI! I have a problem.

I can access to main.some_variable from a second activity.
I can write main.some_variable=0 from a second activity

But when return to main, i lose this changes.

Why,How, What, can do to mantein this values.

Thanks.

 

[Erel]

Process global variables maintain their value as long as the process is alive.