Fix binding for iOS Google Analytics 2 beta 3

It seems that you need to handle the return of the object as a IntPtr and then create a GAITracker from that. I made the GAITracker not abstract… not too sure what the ramifications will be of this though.

GoogleAnalytics/binding/Makefile

@@ -24,10 +24,10 @@ GoogleAnalyticsiOS.zip:
 libGoogleAnalytics.a: GoogleAnalyticsiOS.zip
 	unzip -p $< 'GoogleAnalyticsiOS_2.0beta3/Library/libGoogleAnalytics.a' > $@
 
-GoogleAnalytics.dll: Makefile AssemblyInfo.cs googleanalytics.cs enums.cs libGoogleAnalytics.a
+GoogleAnalytics.dll: Makefile AssemblyInfo.cs googleanalytics.cs enums.cs extras.cs libGoogleAnalytics.a
 	-mkdir -p ios
 	$(BTOUCH) --out=$@ -e googleanalytics.cs enums.cs --sourceonly=list --tmpdir=ios
-	$(SMCS) $(BUILD_FLAGS) -out:$@ @list enums.cs AssemblyInfo.cs -r:monotouch.dll -res:libGoogleAnalytics.a,libGoogleAnalytics.a
+	$(SMCS) $(BUILD_FLAGS) -out:$@ @list enums.cs extras.cs AssemblyInfo.cs -r:monotouch.dll -res:libGoogleAnalytics.a,libGoogleAnalytics.a
 
 clean:
 	-rm -rf list ios *.a *.dll *.o

GoogleAnalytics/binding/extras.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace GoogleAnalytics {
+
+	public partial class GAI 
+	{
+		public GAITracker DefaultTracker { 
+			get { 
+				return new GAITracker (InternalDefaultTracker); 
+			}
+		}
+
+		public GAITracker GetTracker(string trackingId) { 
+			return new GAITracker (InternalGetTracker(trackingId));
+		}
+	}
+
+}

GoogleAnalytics/binding/googleanalytics.cs

@@ -10,10 +10,12 @@
 using MonoTouch.Foundation;
 
 namespace GoogleAnalytics {
+
 	[BaseType (typeof (NSObject))]
 	interface GAI {
+		[Internal]
 		[Export ("defaultTracker")]
-		GAITracker DefaultTracker { get; set;  }
+		IntPtr InternalDefaultTracker { get; set;  }
 
 		[Export ("debug")]
 		bool Debug { get; set;  }
@@ -31,126 +33,98 @@ interface GAI {
 		[Export ("sharedInstance")]
 		GAI SharedInstance { get; }
 
+		[Internal]
 		[Export ("trackerWithTrackingId:")]
-		GAITracker GetTracker (string trackingId);
+		IntPtr InternalGetTracker (string trackingId);
 
 		[Export ("dispatch")]
 		void Dispatch ();
 
 	}
 
 	[BaseType (typeof (NSObject))]
-	[Model]
 	interface GAITracker {
-		[Abstract]
 		[Export ("trackingId")]
 		string TrackingId { get;  }
-
-		[Abstract]
+
 		[Export ("appName")]
 		string AppName { get; set;  }
 
-		[Abstract]
 		[Export ("appId")]
 		string AppId { get; set;  }
 
-		[Abstract]
 		[Export ("appVersion")]
 		string AppVersion { get; set;  }
 
-		[Abstract]
 		[Export ("anonymize")]
 		bool Anonymize { get; set;  }
-
-		[Abstract]
+
 		[Export ("useHttps")]
 		bool UseHttps { get; set;  }
 
-		[Abstract]
 		[Export ("sampleRate")]
 		double SampleRate { get; set;  }
 
-		[Abstract]
 		[Export ("clientId")]
 		string ClientId { get;  }
 
-		[Abstract]
 		[Export ("appScreen")]
 		string AppScreen { get; set;  }
 
-		[Abstract]
 		[Export ("referrerUrl")]
 		string ReferrerUrl { get; set;  }
 
-		[Abstract]
 		[Export ("campaignUrl")]
 		string CampaignUrl { get; set;  }
 
-		[Abstract]
 		[Export ("sessionStart")]
 		bool SessionStart { get; set;  }
 
-		[Abstract]
 		[Export ("sessionTimeout")]
 		double SessionTimeout { get; set;  }
 
-		[Abstract]
 		[Export ("trackView")]
 		bool TrackView ();
 
-		[Abstract]
 		[Export ("trackView:")]
 		bool TrackView (string screen);
 
-		[Abstract]
 		[Export ("trackEventWithCategory:withAction:withLabel:withValue:")]
 		bool TrackEvent(string category, string action, string label, NSNumber value);
 
-		[Abstract]
 		[Export ("trackTransaction:")]
 		bool TrackTransaction (GAITransaction transaction);
 
-		[Abstract]
 		[Export ("trackException:withDescription:")]
 		bool TrackException (bool isFatal, string format );
 
-		[Abstract]
 		[Export ("trackException:withNSException:")]
 		bool TrackException (bool isFatal, NSException exception);
 
-		[Abstract]
 		[Export ("trackException:withNSError:")]
 		bool TrackException (bool isFatal, NSError error);
 
-		[Abstract]
 		[Export ("trackTimingWithCategory:withValue:withName:withLabel:")]
 		bool TrackTiming (string category, double time, string name, string label);
 
-		[Abstract]
 		[Export ("trackSocial:withAction:withTarget:")]
 		bool TrackSocial (string network, string action, string target);
 
-		[Abstract]
 		[Export ("set:value:")]
 		bool Setvalue (string parameterName, string value);
 
-		[Abstract]
 		[Export ("get:")]
 		string Get (string parameterName);
 
-		[Abstract]
 		[Export ("send:params:")]
 		bool Sendparams (string trackType, NSDictionary parameters);
 
-		[Abstract]
 		[Export ("setCustom:dimension:")]
 		bool SetCustom (int index, string dimension);
 
-		[Abstract]
 		[Export ("setCustom:metric:")]
 		bool SetCustom (int index, NSNumber metric);
 
-		[Abstract]
 		[Export ("close")]
 		void Close ();