Objective-c and Swift

1. First create obj-c/Swift project

2. Create the Swift/obj-c file, which is where Xcode prompts you to create a bridging file between Swift and Obj-c, and click Confirm.

3. In the production xxx-bridging-header.h, import the files that need to be used in swift.

4. Calls can be made using Swift's syntax in swift files

Example:

Objective-c (abc.h)

+ (NSString *) Strbyswift;

Called in Swift

Abc.strbyswift ()

NOTE * * *

Xcode automatically converts the OC method to use in Swift, with the same method name.

Methods for calling Swift in Obj-c

1. target-"Build Setting->package defines module must be set to YES,PRODUCT module name set to XXX, default to project name, do not modify

2. In the obj-c file that needs to be called, import the header file "Xxx-swift.h", XXX for the previous set module NAME.

3. Use OC syntax in OBJ-C code to invoke the method inside Swift

Example:

Swift

Class Swifttest:nsobject {func swiftstr ()->nsstring {return ' Swift string '}}

Called in Objective-c

Swifttest *swifttest = [[Swifttest alloc] init]; [Swifttest SWIFTSTR];

Objective-c and Swift