CODEWITHSUNDEEP
objective-cswiftbridging
Etgar
Etgar

Reputation: 5924

Objective C interface generated header can't be imported in other header

I am not an Obj C pro, but I should write some code in Objective C and bridge a Swift code to it. I success in importing the Generated Header to the .m file:

#import "<my_module>-Swift.h"

But when I try importing the same header to the .h file it throws this error: enter image description here

BTW, I only want to add a public variable that instances from a Swift class to a specific obj c class. I've tried to put these lines at the .h and .m files:

@property (nonatomic, readwrite, strong) Card *card;

What should I do?

Upvotes: 1

Views: 173

Answers (2)

jtbandes
jtbandes

Reputation: 118691

In your case, since all you need to do is declare a property of type Card*, you don't actually need to import the header—you can just forward-declare the class with @class Card; before using it.

Upvotes: 1

Anatoli P
Anatoli P

Reputation: 4891

If you want to reference a Swift class in an Objective-C header, you cannot #import the *-Swift.h file, but should rather use a forward declaration as described in https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html, see the section titled Referencing a Swift Class or Protocol in an Objective-C Header. This is basically what @jtbandes is suggesting in the comment.

One gotcha here: the Swift class you want to use in Objective-C must extend the NSObject class, directly or indirectly.

Upvotes: 0

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