从 ObjC 访问函数到 Swift 包的正确语法是什么？

Question

简单场景： 我想从 Objective-C.

中调用任何 Swift 包成员函数

我正在构建一个 reference/demo/proof-of-concept 应用程序以将 ObjC 与 Swift 混合使用。

这是 Swift 方面的有效片段：

import Foundation
import RicPackage

final class Greetings: NSObject {
    @objc public static let shared = Greetings()
    private override init() {}
    
    @objc public func doSomething(name: String) {
        print("Do something, \(name)")
        let ricClass = RicClass()
        ricClass.sayHello()
    }
    
    @objc public func hello() {
        print("Hello Everybody!")
    }
}

这是Objective-C方面：

#import "ViewController.h"
#import "ObjcSwiftHeader-Swift.h"

@class RicClass;

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@"Inside VC ViewDidLoad.");
    Greetings *greetings = [Greetings shared];
    [greetings hello];
    [greetings doSomethingWithName: @"Ric"];
    
    RicClass *ricClass = [RicClass alloc];
}


@end

我遇到了这个编译器错误：

这是项目的快照：

这是 Swift 包裹的东西：

import Foundation

public struct RicStruct {
    public private(set) var text = "Hello, World!"

    public init() {
    }
    
    public func sayHello() -> String {
        "Hello Ric!"
    }
}

public class RicClass: NSObject {
    @objc public var msg = "Mother has a feeling, I might be too appealing."
    @objc public let text = "Hello Everybody!"
    
    public override init() {}
  
    public func sayHello() {
            print(text)
        }
    
    public func doSomething() {
        print("Inside doSomething()")
    }
}

必须有一个简单的解决方案....

Answer 1

包作为动态嵌入式框架链接到您的应用程序中，要使用它们，您应该将包的库导入源文件：

Swift:

import RicPackage

Objective-C:

@import RicPackage;

从 ObjC 访问函数到 Swift 包的正确语法是什么？

What is the proper syntax for accessing a function from ObjC to a Swift Package?

objective-c

swift

swift-package