button操作没有响应iphone

当我按下nextButton，这是UIBarButton。 然后关联的动作不执行。

UIButton *nextButton1=[UIButton buttonWithType:UIButtonTypeCustom]; [nextButton1 setBackgroundImage:[UIImage imageNamed:@"next.png"] forState:UIControlStateNormal]; [nextButton1 addTarget:self action:@selector(goToItems) forControlEvents:UIControlEventTouchUpOutside]; [nextButton1 sizeToFit]; UIBarButtonItem *nextButton=[[UIBarButtonItem alloc]initWithCustomView:nextButton1]; self.navigationItem.rightBarButtonItem=nextButton; 

Answer 1

 [nextButton1 addTarget:self action:@selector(goToItems) forControlEvents:UIControlEventTouchUpInside]; 

你传递的是UIControlEventTouchUpOutside ，应该是UIControlEventTouchUpInside

Answer 2

你通过forcontrolevent作为UIControlEventTouchUpoutside而不是使用

 [nextButton1 addTarget:self action:@selector(goToItems) forControlEvents:UIControlEventTouchUpInside]; [nextButton1 addTarget:self action:@selector(goToItems) forControlEvents:UIControlEventTouchUpInside]; 

Answer 3

显而易见的错误是UIControlEventTouchUpOutside ，您应该将其更改为UIControlEventTouchUpInside 。

但是，不要做一个单独的button，然后将其作为一个视图分配给UIBarButtonItem ，你可以简单地做一个UIBarButtonItem与所需的图像，并将其与所需的行动。

例如：

 UIBarButtonItem *nextButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"next.png"] style:UIBarButtonItemStylePlain target:self action:@selector(goToItems)]; self.navigationItem.rightBarButtonItem = nextButton; [nextButton release];