Objective c UIScrollView中的UIButton不工作

我有一个scrollview，在其中我以编程方式创建按钮。触摸时，按钮应该加载另一个笔尖。问题是，一接触，我就会 [ViewController buttonTest]：发送到实例的选择器无法识别

让我带您浏览代码：

appdelegate.h

@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) UINavigationController *viewController;

Viewcontroller.h

@class newView;

@interface ViewController : UIViewController{

    UIScrollView * scrollView;
    IBOutlet UIButton *btn;

}

- (IBAction)butttonTest:(id)sender;
    @property (strong, nonatomic) newView *secondView;

最后是ViewController.m

- (void)loadView {

    CGRect fullScreenRect=[[UIScreen mainScreen] applicationFrame];
    scrollView=[[UIScrollView alloc] initWithFrame:fullScreenRect];
    scrollView.contentSize=CGSizeMake(320,960);
    UIImageView *tempImageView2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.jpeg"]];

    UIImage * buttonImage = [UIImage imageNamed:@"contentlist_active.png"];

    self.view=scrollView;
    [scrollView addSubview:tempImageView2];
    scrollView.userInteractionEnabled = YES;
    btn = [UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame = CGRectMake(22, 100, 277, 32);
    [btn setBackgroundImage:buttonImage forState:UIControlStateNormal];
    [btn setTitle:@"hello world" forState:UIControlStateNormal];
    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    [btn addTarget:self action:@selector(buttonTest:) forControlEvents:UIControlEventTouchUpInside];

    [scrollView addSubview:btn];

}

要加载视图，我有以下代码：

[btn addTarget:self action:@selector(buttonTest) forControlEvents:UIControlEventTouchUpInside];

我做错了什么

哦，是的，这是buttenPressed的方法

- (IBAction)butttonTest:(id)sender {
self.secondView = [[newView alloc] initWithNibName:@"newView" bundle:nil];

[self.navigationController pushViewController:self.secondView animated:YES];

}

---

您是否实现了buttonTest:方法（我在上面的代码中没有看到）？

您的方法称为

-（iAction）butttonTest:（id）sender

。 三个

t

和一个参数

但是您的选择器是

@selector（buttonTest）

。两个

t

且无参数

这两个方法签名不匹配

更改

addTarget:action:forControlEvents:

调用，如下所示：

[btn addTarget:self action:@selector(butttonTest:) forControlEvents:UIControlEventTouchUpInside];

或者移除两个上的第三个t

试试这个：

[btn addTarget:self action:@selector(buttonTest:) forControlEvents:UIControlEventTouchUpInside];

注意

buttonest:

而不是

buttonest

[btn addTarget:self action:@selector(buttonTest:) forControlEvents:UIControlEventTouchUpInside];