1、使用此方法，進行防連點操作，有一個弊端，就是會讓實際操作延遲執行

@objc private func submitAction() {
        print("submitAction")
        self.classForCoder.cancelPreviousPerformRequests(withTarget: self, selector: #selector(submitOrder), object: self)
        self.perform(#selector(submitOrder), with: self, afterDelay: 1)
    }
 

2、使用UIButton的enabled或userInteractionEnabled屬性，操作開始執行後，屬性設定為false，執行完成設定為true