OC调用Swift

Step by step swift integration for Xcode Objc-based project:

Create new

*.swift

file (in Xcode) or add it by using Finder

Add swift bridging empty header if Xcode have not done this before (see 4 below)

Implement your Swift class by using

@objc

attribute:

import UIKit

@objc class Hello: NSObject {
func sayHello() {
print("Hi there!")
}
}

Open Build Settings and check those parameters:

Product Module Name : myproject

Defines Module : YES

Embedded Content Contains Swift : YES

Install Objective-C Compatibility Header : YES

Objective-C Bridging Header : $(SRCROOT)/Sources/SwiftBridging.h

Import header (which is auto generated by Xcode) in your *.m file

#import "myproject-Swift.h"

Clean and rebuild your Xcode project

Profit!