如何从Swift中的两个日期计算天数[相同的日期应计为“ I”日]

Question

嗨，我要计算两个日期的天数，我要申请休假的日期是相同的，所以差额应为“ 1”休假，而我的代码计算为“ 0”

我的代码：

            fromDateTextField.text = 29-06-2019
            toDateTextField.text = 29-06-2019

            let startDate = fromDateTxtField.text
            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "dd-MM-yyyy"
            let formatedStartDate = dateFormatter.date(from: startDate!)
            let currentDate = toDateTxtField.text
            dateFormatter.dateFormat = "dd-MM-yyyy"
            let formatedEndDate = dateFormatter.date(from: currentDate!)
            print(formatedEndDate)
            print(formatedStartDate)
            let components1 = Set<Calendar.Component>([.day])
            let differenceOfDate = Calendar.current.dateComponents(components1, from: formatedStartDate!, to: formatedEndDate!)
            print (differenceOfDate.day)

我得到的输出是“ 0”