如何在Objective-C中使用Swift闭包

我在产品中创建了一个swift文件。我的swift文件如下：

import UIKit
typealias handler = (String?, Bool?)->Void

@objc  class godness: NSObject {

var test:String?
func sad()->String?
{
    test = "adfasdfaf"
    return test
}

func testX(sss:String?, xx:String?)
{

}

func godnessGetData(hander:handler)
{
    var str:String = ""
    let manager = AFHTTPRequestOperationManager()

    let para = ["section_id":"1",
    "type":"json"];

    manager.POST("http://api.xxx.com/xxx.php",
        parameters: para,
        success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
            str = "JSONsssss:  \(responseObject.description)"
            hander(str, false)
        },
        failure: { (operation: AFHTTPRequestOperation!,error: NSError!) in
            str = "Error: \(error.localizedDescription)"

    })
}
}

@interface godness : NSObject
@property (nonatomic, copy) NSString * __nullable test;
- (NSString * __nullable)sad;
- (void)testX:(NSString * __nullable)sss xx:(NSString * __nullable)xx;
- (SWIFT_NULLABILITY(nonnull) instancetype)init 
@end

但是在产品名称Swift.h中没有godnessGetData。 产品名称Swift.h如下所示：

import UIKit
typealias handler = (String?, Bool?)->Void

@objc  class godness: NSObject {

var test:String?
func sad()->String?
{
    test = "adfasdfaf"
    return test
}

func testX(sss:String?, xx:String?)
{

}

func godnessGetData(hander:handler)
{
    var str:String = ""
    let manager = AFHTTPRequestOperationManager()

    let para = ["section_id":"1",
    "type":"json"];

    manager.POST("http://api.xxx.com/xxx.php",
        parameters: para,
        success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
            str = "JSONsssss:  \(responseObject.description)"
            hander(str, false)
        },
        failure: { (operation: AFHTTPRequestOperation!,error: NSError!) in
            str = "Error: \(error.localizedDescription)"

    })
}
}

@interface godness : NSObject
@property (nonatomic, copy) NSString * __nullable test;
- (NSString * __nullable)sad;
- (void)testX:(NSString * __nullable)sss xx:(NSString * __nullable)xx;
- (SWIFT_NULLABILITY(nonnull) instancetype)init 
@end

我不知道Objective C是否可以使用swift闭包。

---

对不起，我的英语很差。

您可以将

@objc

添加到方法中以强制发送错误消息。基本上，ObjC不支持可选的值类型（

Bool？

）。如果您将其更改为just

Bool

它应该可以工作。是的，它可以工作。非常感谢您。感谢您提供有关

@objc

的信息！我不知道它也可以用于属性。