Objective c 按钮单击不注册

我有一个Xcode 5按钮问题

我在

UIViewController

上以编程方式创建了许多按钮，然后想注册对这些按钮的单击。我使用

NSLog

跟踪点击，但似乎没有在日志中注册点击

有人能帮忙吗

最终目的是在每次点击按钮时切换到下一个

UIViewController

，但只是测试是否首先注册了按钮点击

下面是我如何在

viewDidLoad

中创建按钮（仅显示1个）。 注意：

if语句

仅用于检查在上一个视图中按下了哪些按钮

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

    NSString *myString = [NSString stringWithFormat:@"%d", self.tagNumber ];

    if (self.tagNumber == 1)
    {
        hotelButton = [UIButton buttonWithType:UIButtonTypeCustom];
        hotelButton.tag = 1;
        hotelButton.frame = CGRectMake(60, 60, 300.f, 100.f);

        UIImage *buttonImage1 = [UIImage imageNamed:@"buttonImage1.png"];
        [hotelButton setBackgroundImage:buttonImage1 forState:UIControlStateNormal];
        [self.view addSubview:hotelButton];

        // Add targets and actions
        [hotelButton addTarget:self action:@selector(buttonClicked) forControlEvents:UIControlEventTouchUpOutside];
    }

}

下面是我检查按钮点击的方法

- (void) buttonClicked
{
    NSLog(@"Button %i clicked", hotelButton.tag);
}

注意：我还尝试了以下方法：

- (void) buttonClicked:(UIButton *) button
{
    NSLog(@"Button %ld clicked", (long int)[button tag]);
}

但在我的

viewdiload

中，出现了一个错误“未声明的选择器

按钮已单击”action@selector):

使用以下命令：

[hotelButton addTarget:self action:@selector(buttonClicked) 
    forControlEvents:UIControlEventTouchUpInside];


来自苹果文档：

UIControlEventTouchUpInside
A touch-up event in the control where the finger is inside the bounds of the control.

UIControlEventTouchUpOutside
A touch-up event in the control where the finger is outside the bounds of the control

并保留此方法：

- (void) buttonClicked
{
    NSLog(@"Button %i clicked", hotelButton.tag);
}

使用以下命令：

[hotelButton addTarget:self action:@selector(buttonClicked) 
    forControlEvents:UIControlEventTouchUpInside];


来自苹果文档：

UIControlEventTouchUpInside
A touch-up event in the control where the finger is inside the bounds of the control.

UIControlEventTouchUpOutside
A touch-up event in the control where the finger is outside the bounds of the control

并保留此方法：

- (void) buttonClicked
{
    NSLog(@"Button %i clicked", hotelButton.tag);
}

试试这个

[hotelButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

然后递给发送者

- (void) buttonClicked:(UIButton*)sender
{
    NSLog(@"Button %i clicked", [sender tag]);
}

试试这个

[hotelButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

然后递给发送者

- (void) buttonClicked:(UIButton*)sender
{
    NSLog(@"Button %i clicked", [sender tag]);
}

试着从外面换到里面

[hotelButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

试着从外面换到里面

[hotelButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

已修改您的if条件。请注意：-

if (self.tagNumber == 1)
    {
        hotelButton = [UIButton buttonWithType:UIButtonTypeCustom];
        hotelButton.tag = 1;
        hotelButton.frame = CGRectMake(60, 60, 300.f, 100.f);

        UIImage *buttonImage1 = [UIImage imageNamed:@"buttonImage1.png"];
        [hotelButton setBackgroundImage:buttonImage1 forState:UIControlStateNormal];
hotelButton.showsTouchWhenHighlighted = YES;
hotelButton.imageEdgeInsets = UIEdgeInsetsMake(10, 10, 10, 10);
        [hotelButton addTarget:self action:@selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:hotelButton];

    }

已修改您的if条件。请注意：-

if (self.tagNumber == 1)
    {
        hotelButton = [UIButton buttonWithType:UIButtonTypeCustom];
        hotelButton.tag = 1;
        hotelButton.frame = CGRectMake(60, 60, 300.f, 100.f);

        UIImage *buttonImage1 = [UIImage imageNamed:@"buttonImage1.png"];
        [hotelButton setBackgroundImage:buttonImage1 forState:UIControlStateNormal];
hotelButton.showsTouchWhenHighlighted = YES;
hotelButton.imageEdgeInsets = UIEdgeInsetsMake(10, 10, 10, 10);
        [hotelButton addTarget:self action:@selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:hotelButton];

    }

很好的发现，完全错过了。一定是按错了回车键。谢谢。很好，完全错过了。一定是按错了回车键。谢谢