如何从日期类型获取日期和月份-Swift 4 [英] How to get day and month from Date type - swift 4

问题描述

我有数据类型为Date的变量，我以这种格式存储日期

I have variable with data type Date, where I have stored date in this format

2018-12-24 18:00： 00 UTC

2018-12-24 18:00:00 UTC

如何从这一天或这一天开始？

How can I get from this day or month?

推荐答案

详细信息

• Xcode版本11.0（11A420a），Swift 5



如何将字符串转换为Date

extension Date {
    func get(_ components: Calendar.Component..., calendar: Calendar = Calendar.current) -> DateComponents {
        return calendar.dateComponents(Set(components), from: self)
    }

    func get(_ component: Calendar.Component, calendar: Calendar = Calendar.current) -> Int {
        return calendar.component(component, from: self)
    }
}





用法





Usage

let date = Date()

// MARK: Way 1

let components = date.get(.day, .month, .year)
if let day = components.day, let month = components.month, let year = components.year {
    print("day: \(day), month: \(month), year: \(year)")
}

// MARK: Way 2

print("day: \(date.get(.day)), month: \(date.get(.month)), year: \(date.get(.year))")

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