CODEWITHSUNDEEP
c#objective-cxamarin.iosxamarin
Paulo
Paulo

Reputation: 619

Binding iOS Library - conformsToProtocol failing when called after NSClassFromString

I managed to bind successfully a native iOS library but when I run I have one problem with conformsToProtocol validation failing when trying to validate a protocol implementation in one class looked up by NSClassFromString.

obj-C Code:

Class cl = NSClassFromString("MyProtocolClass");
if (cl == Nil) {
    // Can't instantiate class
    result =  NO;
} else {
    // Check class is compatible with the protocol
    if (![cl conformsToProtocol:@protocol(MyProtocol)]) { <------ FAILS HERE
    //class does not implement MyProtocol
        result =  NO; 
    }
}

Protocol Code:

@protocol MyProtocol <NSObject>
@optional
- (void)method1;
@end

My Binding code:

[Model, BaseType(typeof(NSObject))]
public partial interface MyProtocol
{
    [Export("method1")]
    void Method1();
}

My class:

[Adopts("MyProtocol")] 
[Register ("MyProtocolClass")]
public class MyProtocolClass : MyProtocol
{
}

I think that NSClassFromString is not taking in consideration the protocols that I implement in C#.

Any Ideas how to make this work?

Thanks

Upvotes: 0

Views: 172

Answers (1)

Rolf Bjarne Kvinge
Rolf Bjarne Kvinge

Reputation: 19345

Xamarin.iOS does currently not support exporting protocols defined in C# to Objective-C.

It's on the roadmap for a future version, but exactly when hasn't been determined yet.

Upvotes: 2

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