Not able to call function of swift from Objective-C++ code

Question

In Swift, my class is something looks like below

@objc public class DemoSDK: NSObject { public static var shared = DemoSDK() public func connect(delegate: DemoSDKDelegate?) { } }

I call a method from the swift like below (I am trying to write an equivalent objective-c++ code of below line)

DemoSDK.shared.connect(delegate: self)

How can I call swift file function from objective-c++ code? I already imported header and all related classes into objective-c++ class, also all the required class and methods are marked with @objc

(Note: class in swift do not have constructor or initializer)

DemoSDK *obj = [[DemoSDK alloc] init]; // Error 'init' is unavailable

The posted code does not show @objc tag on 'shared' property or 'connect' function. And there is no '@objc public init()' — Daniel
– Daniel, Commented Nov 8, 2018 at 6:26
Facing the same issue rn, how did you "import" the Swift file in Objective-C++? — mrousavy
– mrousavy, Commented Feb 25, 2021 at 20:17

AppleCiderGuy · Accepted Answer · 2018-11-08 06:37:40Z

4

Add getInstance Method in swift file:

@objc public class DemoSDK: NSObject { private static var shared = DemoSDK() @objc public static func getInstance() -> DemoSDK { return shared } @objc public func connect(delegate: DemoSDKDelegate?) { } }

obj-C code :

[[DemoSDK getInstance] connect: self];

edited Nov 8, 2018 at 6:37

answered Nov 8, 2018 at 6:21

AppleCiderGuy

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2 Comments

Jigar Over a year ago

No known class method for selector 'getInstance' . No known instance method for selector 'connect:'

AppleCiderGuy Over a year ago

i have edited my response. can you please take a look again ?

Daniel · Accepted Answer · 2018-11-08 16:14:40Z

1

Mark all public classes, protocols, initializers, functions and properties with @objc

edited Nov 8, 2018 at 16:14

answered Nov 8, 2018 at 6:18

Daniel

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2 Comments

Jigar Over a year ago

That I already did, but how to call a method using a static instance of class?

Daniel Over a year ago

@harshal shows this in his updated answer: [DemoSDK getInstance].

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