Problem refences object in designer

arenaluigi · Jun 12, 2012

Hello,
sorry my bad english.

When to call a property of control generated to the designer, I get an error null pointer exception.

Example:

B4X:

dim pnl as panel (autogenerate by designer)

in the basic code

pnl.top=50 (this generate error) whi ?

Thanks

Erel · Jun 12, 2012

Have you loaded the layout file?

B4X:

Activity.LoadLayout(...)

arenaluigi · Jun 12, 2012

Problem references in designer

Yes.

This my code:

B4X:

        Dim PnlHeader As Panel (generate by designer)
        Activity.LoadLayout("blacklist")
   PnlHeader.Initialize("")
        PnlHeader.top=30 (Error null)
   scrlDati.Initialize(0)
   PnlBody=scrlDati.Panel
   Activity.AddView(scrlDati,0,20, 100%x, 100%y)

Thanks

klaus · Jun 12, 2012

You must remove this line:

B4X:

PnlHeader.Initialize("")

Views defined in the designe MUST NOT be initialized in the code.

Best regards.

arenaluigi · Jun 12, 2012

Thanks !!!:sign0060:

Problem refences object in designer

arenaluigi

Well-Known Member

Erel

B4X founder

arenaluigi

Well-Known Member

klaus

Expert

arenaluigi

Well-Known Member

Problem refences object in designer

arenaluigi

Well-Known Member

Erel

B4X founder

arenaluigi

Well-Known Member

klaus

Expert

arenaluigi

Well-Known Member

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