某些“ UIButton”中的单个选择

Question

假设我有10个UIButton如下

我想实现单选，但我不知道该怎么做。条件如下：

首先，ALL按钮将处于选定位置（突出显示等）。当我单击另一个按钮（如VCU按钮）时，该VCU按钮将突出显示并且该ALL按钮将处于正常状态（取消突出显示）。

程式码片段：

@IBAction func buttonDisplayAction(_ sender: UIButton) {
    if sender == self.buttonAll {
        self.currNr = -1
        self.filteredDataRoomStatus = self.dataRoomStatus
    } else if sender == self.buttonVCU {
        self.currNr = 1
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonOC {
        self.currNr = 5
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonVCC {
        self.currNr = 0
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonVD {
        self.currNr = 2
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "checkout zistatus", searchStr: "0 2", equalFlag: false)
    } else if sender == self.buttonED {
        self.currNr = 3
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonOD {
        self.currNr = 4
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonCO {
        self.currNr = 12
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "checkout", searchStr: "1", equalFlag: true)
    } else if sender == self.buttonDnD {
        self.currNr = 8
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    } else if sender == self.buttonOOO {
        self.currNr = 6
        self.isButtonSelected = true
        self.filteredDataRoomStatus = filterArray(dataRoomStatus, keywords: "zistatus", searchStr: "\(self.currNr)", equalFlag: true)
    }

    do {
        let currButton: UIButton = (sender as UIButton)
        currButton.isSelected = !currButton.isSelected

        if currButton.isSelected {
            currButton.backgroundColor = UIColor.darkGray
        } else {
            currButton.backgroundColor = UIColor.clear
        }
   }
}

上面的代码进行了多次选择，但我需要一次选择。我已经读过这个和这个，但是我仍然被卡住。

Answer 1

我觉得这很容易

@IBAction func onClickButton(_ sender: UIButton) {
    deselectAllButtons()
    sender.isSelected = true
}
func deselectAllButtons(){
    for subView in view.subviews 
      {
        // Set all the other buttons as normal state
        if let button = subView as? UIButton {
            button.isSelected = false
        }
    }
   //Or you can simply do write above for loop code with one line
  /*
   view.subviews.forEach { ($0 as? UIButton)?.isSelected = false }
  */
}