1.创建一个Swift工程命名为OCSwift

2.随便创建一个OC文件

会出现提示，选择Create Bridging Header,系统会创建一个桥接文件

3.配置工程，确保Objective-C Compatibility Header为当前工程下的桥接文件

4.创建文件EndView

#import <Foundation/Foundation.h>
 
@interface EndView : NSObject
-(void)show;
@end

#import "EndView.h"
 
@implementation EndView
 
-(void)show
{
    NSLog(@"Hello world");
}
@end

5.在Swift文件中引用OC类
在OCSwift-Bridging-Header.h中引用OC类

#import "EndView.h"

ViewController.swift中使用

import UIKit
 class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view,typically from a nib. let endview=EndView() endview .show() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }