在Swift中選中和取消選中複選框

Question

如何知道我的按鈕是否在swift中被選中或未找到.selected屬性未找到。

當i型checkBtn.selected在夫特3（的Xcode 8.0）未發現

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

Answer 1

試試這個下面的代碼

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

速記，試試這個

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

Answer 2

在迅速3，你將有isSelected代替選擇。您的代碼看起來很好，只需進行更改。

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 
}