Objective c 如何在swift中向UIDatePicker（）选定日期添加一天？

我的申请表中有日期选择器

我从日期选择器中选择一个日期，需要将一天添加到特定的选定日期

请找到我的密码

var startingdate:Date?
let datePicker = UIDatePicker()
datePicker.datePickerMode = .date

let formatter = DateFormatter()
        self.startingdate = datePicker.date
        showDatePicker1()
        formatter.dateFormat = "yyyy/MM/dd"//"MM/dd/yyyy"
        txtFieldStartDate.text = formatter.string(from: datePicker.date)
        self.view.endEditing(true)

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我需要给sarting date添加一天

日历

是日期数学的首选API

let pickerDate = datePicker.date
let pickerDatePlusOneDay = Calendar.current.date(byAdding: .day, value: 1, to: pickerDate)