How to call Swift initializer (that has a parameter) from Objective-C?

Question

I have a Swift class:

class MyTextField : NSObject, UITextFieldDelegate { 

    var myField: UITextField

    // no idea how to pass in my UITextField from Objective-C code
    init (x: UITextField) {
        myField = x;
    }
}

I have added a property (not shown) so I could set myField, and everything is working.

Would like to use the init function, if only the syntax were not a complete mystery. Any ideas?

score 17 · Accepted Answer · answered Sep 18 '14 at 22:13

17

Call it the same way you'd call an Obj-C initializer, so for your example, you'd call [[MyTextField alloc] initWithX:theTextField];.

answered Sep 18 '14 at 22:13

NRitH

13,441
4
41
44

1

I'm still a Obj-C newbie I guess. Thanks – Gerry Sep 18 '14 at 22:38
And init must be public I believe - at least in my experience – Nick Sep 12 '19 at 16:55
3

in swift 4+ the initializer must be declared with @objc or it won't be visible to the objective-c code: \@objc init(x:UITextField) – Chris Hutchinson May 11 '20 at 02:35

How to call Swift initializer (that has a parameter) from Objective-C?

1 Answers1

Linked