Iphone 应用程序在按钮的方法调用时崩溃
当我点击按钮时,我的应用程序崩溃了。这是我的代码Iphone 应用程序在按钮的方法调用时崩溃,iphone,ios,objective-c,uibutton,Iphone,Ios,Objective C,Uibutton,当我点击按钮时,我的应用程序崩溃了。这是我的代码 [btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside]; -(void)btnClicked { } 感谢您的帮助。您的选择器以冒号(:)结尾。这意味着该方法有一个参数。移除冒号: @selector(btnClicked) 或将参数添加到方法声明中: - (void)btnClicked:(id)s
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
-(void)btnClicked
{
}
感谢您的帮助。您的选择器以冒号(:)结尾。这意味着该方法有一个参数。移除冒号:
@selector(btnClicked)
或将参数添加到方法声明中:
- (void)btnClicked:(id)sender {}
选择器以冒号(:)结尾。这意味着该方法有一个参数。移除冒号:
@selector(btnClicked)
或将参数添加到方法声明中:
- (void)btnClicked:(id)sender {}
更改代码并尝试此操作
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
更改代码并尝试此操作
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
您的代码中有错误: 如果您这样做:
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
那么你的方法应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
如果您这样做:
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
那么你的方法应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
您的代码中有错误: 如果您这样做:
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
那么你的方法应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
如果您这样做:
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
那么你的方法应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
取下结肠
应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
因为您使用的是btnClicked,所以需要使用
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
将方法更改为此
- (void)btnClicked:(UIButton*)sender
{
}
取下结肠
应该是这样的:
-(void)buttonCliked:(id)sender{}
-(void)buttonCliked{}
[btn setTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
因为您使用的是btnClicked,所以需要使用
[btn setTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
将方法更改为此
- (void)btnClicked:(UIButton*)sender
{
}
谢谢,这很有效。你给了我第一个答复,所以我会接受你的回答。谢谢你的回答。你给了第一个答复,所以我将接受你的答复