如何从swift调用目标C中具有处理程序块的函数

Question

谁能告诉我如何从swift调用objective c类中定义的“attemptLogin”登录函数

#import <Foundation/Foundation.h>

@interface LoginHandler : NSObject<NSURLConnectionDelegate,NSXMLParserDelegate>{

}

typedef void (^CustomCallback)(NSDictionary *responseObj);

-(void)attemptLogin:(NSString *)userName andPassword:(NSString *)password completionHandler:(CustomCallback) callback;
@end

，我正在调用 swift 文件，如

var loginHandler = LoginHandler();
        loginHandler.attemptLogin(userMob, andPassword: userPass){
            data in


        }

但是data是以NSObject形式返回的，但应该是NSDictionary

Answer 1

假设你在 Objective C 中有阻塞 -

 [[MyDataStore instance] askUserForMe:^(Person *person, NSError *error){
        // do things with myself that aren't strange
    }];

下面的代码将是当您从 swift 调用时 -

MyDataStore.instance().askUserForMe() {
    person, error in 
    // do things with myself that aren't strange
}