我可以通过iPhone SDK中的标签获取元素吗？

Question

我想找回一个按钮，我已经将标签分配给那里，我该怎么做？谢谢。

Answer 1

使用viewWithTag方法。例如如果你的按钮是在控制器的观点和你的按钮的标签是100下面一行将返回按钮：

UIButton *button = (UIButton *)[self.view viewWithTag:100]; 

编辑：与特定标签

获取视图斯威夫特 -

let view = self.view.viewWithTag(100) 

如果你想确保你有特定类型的视图，比如UIButton，你应该检查类型：

if let button = self.view.viewWithTag(100) as? UIButton { 
    //Your code 
} 

Answer 2

UIButton *button=(UIButton *)[self.view viewWithTag:tag]; 

//现在你可以得到基于标签值的按钮

Answer 3

//Get View using tag 
     UITextField *textFieldInView = (UITextField*)[self.view viewWithTag:sender.tag+1000]; 
     UILabel *labelInView = (UILabel*)[self.view viewWithTag:sender.tag+2000]; 

//Print its content based on the tags 
     NSLog(@"The tag is %d ", textFieldInView.tag); 
     NSLog(@"The tag is %d ", labelInView.tag); 
     NSLog(@"The Content is %@ ", textFieldInView.text); 
     NSLog(@"The Content is %@ ", labelInView.text);