外面觸摸時如何更改按鈕字體？

Question

因此，我試圖在按下按鈕時更改按鈕的字體，然后在用戶觸摸另一個按鈕內部時恢復字體。 目前，當用戶在內部觸摸時更改字體是可行的，但是我從情節提要中為touchUpOutside動作創建了一個出口，並嘗試回收代碼，但該代碼不起作用。

@IBAction func touchUpInside(_ sender: AnyObject) {
    sender.titleLabel?!.font = UIFont(name: "Futura-CondensedExtraBold", size: 25)
}
@IBAction func touchUpOutside(_ sender: AnyObject) {
    sender.titleLabel?.font = UIFont(name: "Futura-Medium", size: 22)
}

Answer 1

您是說有一個按鈕，當您觸摸touchUpInside時，文本字體將更改，而當您在同一按鈕上觸摸touchUpOutside時，文本字體將更改為另一種字體。

如果這是您要找的答案，請不要忘記答案。

// The Button As An Outlet
@IBOutlet weak var theButton: UIButton!

// The Button using Touch Up Inside
@IBAction func theButtonInside(_ sender: AnyObject) {
     sender.titleLabel?!.font = UIFont(name: "Futura-CondensedExtraBold", size: 25)
}

// The Button using Touch Up Outside
@IBAction func theButtonOutside(_ sender: AnyObject) {
    //This is a reference to the button as an outlet.
    theButton.titleLabel?.font = UIFont(name: "Futura-Medium", size: 22)
}

Answer 2

按下button2時還原button1的字體

如果這是您要找的答案，請不要忘記答案。

//Button 1 as outlet.
@IBOutlet weak var button1Outlet: UIButton!

//Button 1 as touchUpInside.
@IBAction func button1(_ sender: AnyObject) {
    sender.titleLabel?!.font = UIFont(name: "Futura-CondensedExtraBold", size: 25)
}

//Button 2 as touchUpInside.
@IBAction func button2(_ sender: AnyObject) {

//Referenceing button 1 outlet.
    button1Outlet.titleLabel?.font = UIFont.systemFont(ofSize: 15.0)
}