CODEWITHSUNDEEP
swift
Fadi Abuzant
Fadi Abuzant

Reputation: 567

Ambiguous use of 'init'

I try to initial my class with block (closure) but I got

Ambiguous use of 'init'

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all the time, my class in objective c and I try to use it in swift4

Objc init

typedef void (^updateCoordinate)(CLLocationCoordinate2D coordinate);

- (instancetype)initWithCoordinate:(CLLocationCoordinate2D)coordinate Dragable:(BOOL)isDragable updateCoordinate:(updateCoordinate)updateCoordinate;

Swift init

let map = FAMapViewController.init(coordinate: CLLocationCoordinate2DMake(0, 0), dragable: true) { (coordinate) in  }

NS_SWIFT_NAME does not help me, I got same issue any advice Please .

Upvotes: 4

Views: 15149

Answers (4)

gorkem
gorkem

Reputation: 530

In my case, the issue of Ambiguous use of 'init' was that I had a class in my project with the exact same name of another class inside a SPM Package dependency. Therefore, Xcode didn't know which class to use, mine or the one from the Package.

If you ⌘ command+click on the name of the class, you will see that Xcode will show you two different options of locations. That's where I understood the problem.

Upvotes: 0

Luat Vu Dinh
Luat Vu Dinh

Reputation: 480

In some cases, you need to check the DUPLICATE of the init function in your class or struct. This example will be showing error Ambiguous use of 'init'

init(name: String = "") { 
    self.id = -1
    self.name = name
}

init(id: Int = -1, name: String = "") {
    self.id = id
    self.name = name
}

Upvotes: 0

Craig
Craig

Reputation: 9330

Ambiguous use of 'init' means the signature of the init call you're making in your Swift can't be matched to an init in the target class.

I've seen this error caused by simple mistakes in the call site - like capitalisation being incorrect. For example in your Swift init call you have a lowercase dragable: true but in the Objc init you have Dragable:(BOOL)

StackOverflow is full of examples of incorrect capitalisation, e.g.:

IOS: Ambiguous Use of init(CGImage)

SCNSceneSource init is giving Ambiguous use of 'init(URL:options:)' error

Upvotes: 2

Fadi Abuzant
Fadi Abuzant

Reputation: 567

I found solution for my issue , I use same method name with deferent parameter in Objective-C Class

- (instancetype)initWithCoordinate:(CLLocationCoordinate2D)coordinate
     Dragable:(BOOL)isDragable 
    updateCoordinate:(updateCoordinate)updateCoordinate;

and

- (instancetype)initWithCoordinate:(CLLocationCoordinate2D)coordinate
 Dragable:(BOOL)isDragable;

just used NS_SWIFT_NAME to change names and it's work fine

NS_SWIFT_NAME(init(withUpdateCoordinateAndCoordinate:isDragable:withUpdateCoordinate:));

and 

NS_SWIFT_NAME(init(withCoordinate:isDragable:));

Upvotes: 0

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