PyObjc Objective C - Python Protocol issue

Hi Ronald,

Thank you very much for PyObjc.

I do have knowledge in iOS swift & Objctive c, but i am new to Python & PyObjc.

By Using PyObjC i did small application in Xcode. Now i am facing an issue with Protocols. Please see below for Sample code.

I have initiated and loaded the objective class from Python using PyObjc

Objective C: (Below is the code i have written in Objective C.

@protocol OBJCDelegate <NSObject>
-(int)triggerService();
@end

@interface MyTestClass

@property (nonatomic, weak) id< OBJCDelegate > objcDelegate;

@end

@implementation MyTestClass

- (id) init {
    if(self = [super init]) {
      [self triggerToPython]
    }
}
- (void) triggerToPython(){
    objcDelegate.triggerService()
}

@end

Now i need to execute the delegate in Python Class.

Python : (Below is my Python class code)

 from pyobjus import autoclass, protocol

    class MyOwnClass():

        def __init__(self):
          print '-> Inside test class'

        def printhello():
           print '-> Hello'
           from pyobjus import autoclass
           MyTestClass = autoclass('MyTestClass')
           cObj = MyTestClass().init()
           cObj.objcDelegate = self    // assiging the delegate here


       @protocol('OBJCDelegate')
       def triggerService(self):
           print '-> delegate triggered'

But it is throwing error as shown below

File "pyobjus/pyobjus.pyx", line 1X, in pyobjus.pyobjus.objc_create_delegate pyobjus.pyobjus.ObjcException: Undeclared protocol OBJCDelegate

Could someone please help me on this.

Thank you.

What is "pyobjus"? The error message you mention indicates that this is some kind of Cython module, and not part of PyObjC.

Thank you Ronald. Yes it is not part of PyObjC. Posted wrongly. I am closing the issue.

Thank you.

Wrongly posted in PyObjc

Invalid Issue