objective-c - 如何将字符串作为 UIButton 的标签传递

Question

标签值是一个整数:

UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:addressField forState:UIControlStateNormal];
[button addTarget:self action:@selector(pickTheQuiz:) forControlEvents:UIControlEventTouchUpInside];
button.tag=1;//or what other integer value, i need to put a string value

在接收方法中:

-(void)pickTheQuiz:(id)sender{           
    NSLog(@"The part number is:%i",((UIControl*)sender).tag);//i need to receive a string value instead of numeric value
}

Answer 1

您可以将标签的整数值转换为 NSString，方法是:

[NSString stringWithFormat:@"%i", ((UIControl*)sender).tag];

或者，如果您确实需要一个字符串作为 UI 对象的标识符，只需将其子类化并添加如下属性:

@property (nonatomic, strong) NSString *stringID;

然后使用它而不是使用标签属性。