在Swift中选中和取消选中复选框

Question

如何知道我的按钮是否在swift中被选中或未找到.selected属性未找到。

当i型checkBtn.selected在夫特3（的Xcode 8.0）未发现

if let button = sender as? UIButton { 
     if button.selected { 
      // set selected 
      button.selected = true 
     } else { 
      // set deselected 
      button.selected = false 
     } 
    } 

Answer 1

试试这个下面的代码

if let button = sender as? UIButton { 
     if button.isSelected { 
      // set selected 
      button.isSelected = true 
     } else { 
      // set deselected 
      button.isSelected = false 
     } 
    } 

速记，试试这个

if let button = sender as? UIButton { 
    button.isSelected = !button.isSelected 
} 

Answer 2

在迅速3，你将有isSelected代替选择。您的代码看起来很好，只需进行更改。

Answer 3

if let button = sender as? UIButton { 
    if button.isSelected { 
     //for selected input    
    } else { 
     //for not selected input 
    } 
    button.isSelected = !button.isSelected //toggle the text box 
}