What more information could you ask for, it has given you the line and the exception, obviously tab is null. Nowhere in the code you supplied have you initialized tab ie you need a line like so:
Var tab = new TabOne(); From: monodroid-boun...@lists.ximian.com [mailto:monodroid-boun...@lists.ximian.com] On Behalf Of Tomasz Cielecki Sent: Monday, 21 November 2011 5:20 AM To: Discussions related to Mono for Android; p...@all-the-johnsons.co.uk Subject: Re: [mono-android] NullException error tab is probably null then. On Nov 20, 2011 2:32 AM, "Paul F. Johnson" <p...@all-the-johnsons.co.uk> wrote: 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... _______________________________________________ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
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