Simple Spinner question

Not resolved

This resolved the problem

I'm still not sure what the purpose of InitializeSpinner1 event is for.

One thing is if you added the spinner in the designer then you don't need to initialize it

Sent from my DROIDX

you can also use:

Replace


with

"InitializeSpinner1" is the prefix of the names of the subroutines that will handle this objects events. For a spinner object there is only one event "ItemClick" so when an item in the spinner is clicked B4A goes looking for a sub called "InitializeSpinner1_ItemClick".

It you are not interested in getting this event, which for a spinner is not uncommon, you can just use, Spinner1.Initialize("")

Bluejay

cymorg said:

This resolved the problem

B4X:

    If FirstTime Then
           Spinner1.Initialize("InitializeSpinner1")
    End If
    Activity.LoadLayout("Location")    
    Spinner1.Add("Item1")
    Spinner1.Add("Item2")
    Spinner1.Add("Item3")

I'm still not sure what the purpose of InitializeSpinner1 event is for.

Click to expand...

Since you haven't mentioned getting an error on the Initialize line, I assume that you are not loading a Designer layout with the spinner in it.

Anyway, if you Initialize the spinner only the FirstTime, then you will get an error if Android restarts your app, such as when you rotate the device.

Also, the Event name InitializeSpinner1 seems confusing since it seems unlikely that you are using the spinner's Click event to initialize anything, much less Spinner1. Normally you would just say:

Spinner1.Initialize("Spinner1")

Then the Click Event sub will be Sub Spinner1_Click(...) instead of Sub InitializeSpinner1_Click(...).

But say that you had multiple Spinners and you wanted them all to use the same Click event, then you would initialize them all with the same event name, such as Spin1.Initialize("Spin"), Spin2.Initialize("Spin"), etc.

In case you are saying that you don't know what the Spinner's Click event is for --

The Spinner is like a Label with a drop-down list. You can click on an item in the list to select it and the Click event tells you which item you clicked.