OC调用Swift方法

1、在 Build Settings 搜索 Packaging ，设置 Defines Module 为 YES

 2、新建 LottieBridge.swift 文件，自动生成桥 ProductName-Bridging-Header.h

 3、在 LottieBridge.swift 中，定义Swift类继承于OC类，声明 @objcMembers 或 @objc ，实现相关方法

import UIKit
import Lottie// 所有方法/属性声明
@objcMembers class MyLottieView: UIView {private let animationView = LottieAnimationView()override init(frame: CGRect) {super.init(frame: frame)self.addSubview(animationView)}override func layoutSubviews() {super.layoutSubviews()animationView.frame = self.bounds}public func setLottieFromURL(_ url: URL?) {if let url = url {LottieAnimation.loadedFrom(url: url) { [weak self] (animation) inself?.animationView.animation = animation}}}public func play() {animationView.play()}
}// 单个方法/属性声明
@objc class MyLottieView: UIView {private let animationView = LottieAnimationView()override init(frame: CGRect) {...}override func layoutSubviews() {...}@objc public func setLottieFromURL(_ url: URL?) {...}@objc public func play() {...}
}

4、在OC代码中引用 ProductName-Swift.h ，调用Swift相关方法

#import "ProductName-Swift.h"- (void)swiftTest {MyLottieView *lottieView = [[MyLottieView alloc] initWithFrame:CGRectMake(100, 100, 320, 320)];[self.view addSubview:lottieView];NSURL *url = [NSURL URLWithString:@"https://assets9.lottiefiles.com/packages/lf20_N0y2Nj.json"];[lottieView setLottieFromURL:url];[lottieView play];
}

Swift调用OC方法

1、在 ProductName-Bridging-Header.h 中加入OC的头声明

#import <YYKit/YYKit.h>
#import <AFNetworking/AFNetworking.h>

2、在Swift代码中调用OC的相关方法

private func OCTest() {let configuration = URLSessionConfiguration.default_ = AFURLSessionManager(sessionConfiguration: configuration)
}