監(jiān)聽鍵盤輸入更改的方法
self.textFieldBuyOrSell.addTarget(self, action: #selector(self.textFieldChange), for: UIControlEvents.editingChanged)
監(jiān)聽鍵盤輸入更改的方法
self.textFieldBuyOrSell.addTarget(self, action: #selector(self.textFieldChange), for: UIControlEvents.editingChanged)