Bug 41303 - IJSExport
Summary: IJSExport
Alias: None
Product: iOS
Classification: Xamarin
Component: XI runtime ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2016-05-25 01:24 UTC by liugx
Modified: 2016-05-26 09:50 UTC (History)
6 users (show)

Is this bug a regression?: ---
Last known good build:

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Description liugx 2016-05-25 01:24:52 UTC
This is how my custom object is implemented:

	interface IMyCustomObject : IJSExport
		[Export ("Hello:")]
		void Hello(JSValue val);

		[Export ("CallMeBack:")]
		void CallMeBack (JSValue callbackFunc);


	public class MyCustomObject : NSObject, IMyCustomObject

		public void Hello (JSValue val)
			//This will print out __NSCFNumber
			Debug.WriteLine ("Class of val: " + val.Class.Name);

			//This will fail, saying there is no selector isNumber

			if (val.IsNumber)
				Debug.WriteLine("Is a number");
				Debug.WriteLine("Is not a number");

		public void CallMeBack (JSValue callbackFunc)
			//This will print out __NSDictionaryM
			Debug.WriteLine ("Class of callbackFunc: " + callbackFunc.Class.Name);

			callbackFunc.Call ();


And this is how it's called:

	var jsContext = new JSContext ();
	var customObject = new MyCustomObject ();
	jsContext.GlobalObject.SetProperty (customObject, "customObject");
	jsContext.ExceptionHandler = new JSContextExceptionHandler((ctx, ex) => {
            Console.WriteLine("WEB JS: {0}", ex);
	jsContext.EvaluateScript (@"

//run result
WEB JS: TypeError: customObject.Hello is not a function. (In 'customObject.Hello(10)', 'customObject.Hello' is undefined)
//development environment
=== Xamarin Studio Business ===

Version 5.10.3 (build 51)
Installation UUID: 96790184-5699-4b29-a047-9f4c96df4250
	Mono 4.4.0 (mono-4.4.0-branch/0f5fdf2)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 404000168

=== Xamarin.Profiler ===

Not Installed

=== Apple Developer Tools ===

Xcode 7.3.1 (10188.1)
Build 7D1014

=== Xamarin.Mac ===

Version: (Xamarin Business)

=== Xamarin.Android ===

Not Installed

=== Xamarin Android Player ===

Not Installed

=== Xamarin.iOS ===

Version: (Xamarin Business)
Hash: efefc1e
Branch: cycle7
Build date: 2016-05-13 17:19:05-0400

=== Build Information ===

Release ID: 510030051
Git revision: f3c0d982165f785772d125f02668370d929014fb
Build date: 2016-03-24 18:51:31-04
Xamarin addins: ee5cfd3ecb6b20de47c1d25efb9a9abc101e8ce7
Build lane: monodevelop-lion-cycle6-c6sr3

=== Operating System ===

Mac OS X 10.11.1
Darwin sodsoftdeiMac-2.local 15.0.0 Darwin Kernel Version 15.0.0
    Sat Sep 19 15:53:46 PDT 2015
    root:xnu-3247.10.11~1/RELEASE_X86_64 x86_64
Comment 1 Rolf Bjarne Kvinge [MSFT] 2016-05-25 12:14:25 UTC
Can you attach the complete Application Output?

Also do you see this in the simulator or on device (or both)?
Comment 2 liugx 2016-05-26 02:40:00 UTC
Can you attach the complete Application Output?

2016-05-26 09:28:35.547 tabarTest[590:21648] MonoTouch.RuntimeException: Detected a protocol (tabarTest.IMyCustomObject) inheriting from the JSExport protocol while using the dynamic registrar. It is not possible to export protocols to JavaScriptCore dynamically; the static registrar must be used (add '--registrar:static' to the additional mtouch arguments in the project's iOS Build options to select the static registrar).
2016-05-26 09:29:57.821 tabarTest[590:21648] WEB JS: TypeError: customObject.Hello is not a function. (In 'customObject.Hello(10)', 'customObject.Hello' is undefined)
Also do you see this in the simulator or on device (or both)?

Comment 3 Rolf Bjarne Kvinge [MSFT] 2016-05-26 07:53:57 UTC
Did you try doing what the warning about IMyCustomObject says?
Comment 4 liugx 2016-05-26 09:49:46 UTC
Has been solved。
Comment 5 Rolf Bjarne Kvinge [MSFT] 2016-05-26 09:50:43 UTC
OK, thanks, I'm closing this then.