Sharpie binding objective-c @protocols issue

Question

I'm using sharpie bind command to get API interfaces for my iOS library for xamarin

sharpie bind --namespace=XXX --sdk=iphoneos9.2 Headers/*.h

Have issues with @protocol bindings:

The type or namespace name `IProfileDelegate' could not be found. Are you missing an assembly reference?

This is how it's generated:

    interface XLibrary : IProfileDelegate
    {
    [Wrap ("WeakProfileDelegate")]
    [NullAllowed]
    MB_ProfileDelegate ProfileDelegate { get; set; }

I understand that it creates empty ProfileDelegate then compiler or something fills it with methods BUT my issue is that IProfileDelegate not found.

@protocol ProfileDelegate <NSObject>
@required
- (void)GetProfileFinished:(NSString*)_data;
- (void)SetProfileFinished:(NSString*)_data;
@end

Difference here in I symbol (which is reserved for @protocols I guess). How to make sharpie generate proper api definitions?

I'm able to remove all I prefixes and it compiles successfully but I'd rather fix it not to repeat this every time I need to update source library.

Thanks

score 5 · Accepted Answer · answered Apr 07 '16 at 01:23

5

Remember that all the obj-c protocol act as a interface or abstract class i recommend to put "protocol, model and set base type as nsobject, another thing all the methods or properties maked as a "required" you need to specify it as Abstract

[Protocol, Model]
[BaseType (typeof(NSObject))]
interface myAwesomeDelegate
{
  [Abstract]
  [Export(...)]
  void myRequiredMethod(uint param1)

  [Export(...)]
  void anotherMethod()
}

hope this will help you to fix your issue

answered Apr 07 '16 at 01:23

Alejandro Ruiz Varela

571
3
8

Why do we need to set base type? – awattar Mar 30 '17 at 17:02
@awattar because his ProfileDelegate obj-c class has NSObject as base class (at)protocol ProfileDelegate – Alejandro Ruiz Varela Apr 03 '17 at 19:23
But when protocol does not use NSObject? http://stackoverflow.com/q/43126822/1142979 – awattar Apr 03 '17 at 19:34
Setting BaseType fixed it for me. – Guy Nov 24 '19 at 11:25

score -3 · Answer 2 · answered Apr 06 '16 at 11:21

According to the Objective Sharpie documentation:

In some cases these generated files might be all you need, however more often the developer will need to manually modify these generated files to fix any issues that could not be automatically handled by the tool (such as those flagged with a Verify attribute).

This means you will sometimes have to adjust the two generated files, ApiDefinitions.cs and StructsAndEnums.cs to fix issues, such as the one in this case.

You can read more about how bindings work for Objective-C protocols, which are similar to C# Interfaces, but not quite in the binding documentation.

[verify ...] directives is clear but my question was about this prefix I — Injectios, Apr 06 '16 at 11:35

Sharpie binding objective-c @protocols issue

2 Answers2

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