ios - Storyboard自定义类被忽略

Question

我正在尝试将自定义 View Controller 添加到我的 Storyboard 中。 View Controller KTResearchUploadViewController 出现在“自定义类”类下拉列表中，我已选择它。在 View Controller 内(在 Storyboard上)，我有一个链接到 KTResearchUploadViewController 的按钮，用于在主要操作上调用方法 handleUploadButtonPress。

按下按钮时，我收到此错误:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIViewController handleUploadButtonPress:]: unrecognized selector sent to instance 0x11c33b740'

看起来它试图在 UIViewController 而不是 KTResearchUploadViewController 上调用 handleUploadButtonPress。我在这里做错了什么？

KTResearchUploadViewController.h

#import <UIKit/UIKit.h>

@interface KTResearchUploadViewController : UIViewController

@end

KTResearchUploadViewController.m

#import "KTResearchUploadViewController.h"

@interface KTResearchUploadViewController ()

@end

@implementation KTResearchUploadViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
- (IBAction)handleUploadButtonPress:(id)sender {
    NSLog(@"Button pressed!");
}

@end

Answer 1

将 IBAction 添加到您的 .h

#import <UIKit/UIKit.h>

@interface KTResearchUploadViewController : UIViewController
- (IBAction)handleUploadButtonPress:(id)sender;
@end

还要确保从 IB 中的按钮到您的代码有连接

https://developer.apple.com/library/content/referencelibrary/GettingStarted/DevelopiOSAppsSwift/ConnectTheUIToCode.html