[mono-android] NullException error

[Paul F. Johnson]

Hi,

My (slowly) developing Android app seems to have come a cropper with a
very unhelpful error message

Unhandled Exception:

System.NullReferenceException:

and that's it.

I have three tabs. Tab 2 has a reference to tab 1 like this

public class tabTwo : Activity
{
  tabOne tab;
  // etc
}

The button handler looks like this

private void(object s, EventArgs e)
{
  if (tab.var1 == 0 || tab.var2 == 0 || tab.var3 == 0)
  {
    // toast line - you can't have any of these to be zero
    return;
   }
}

The exception is at the tab.var1 line.

Should the throwback be giving more information than that?

Paul
-- 
Vertraue mir, ich weiss, was ich mache...