如何获取当前月份的开始日期和结束日期（Swift 3） [英] How to get start date and end date of the current month (Swift 3)

问题描述

我试图在 dd / MM / yyyy 格式中获取当月的开始和结束日期。我在这个 SO Question 。但它似乎不是我想要的（格式不同，也是给我上个月的最后一个日期，最近一个月，但是一个日期）。有些人可以帮助我。

I'm trying to get the start and end dates of the current month in dd/MM/yyyy format. I tried using extension as answered in this SO Question.But it seems like it's not what I want(the format is different and also it's giving me last month's last date and current month last but one date ). Can some one help me.

扩展类：

extension Date {
    func startOfMonth() -> Date? {
        let comp: DateComponents = Calendar.current.dateComponents([.year, .month, .hour], from: Calendar.current.startOfDay(for: self))
        return Calendar.current.date(from: comp)!
    }

    func endOfMonth() -> Date? {
        var comp: DateComponents = Calendar.current.dateComponents([.month, .day, .hour], from: Calendar.current.startOfDay(for: self))
        comp.month = 1
        comp.day = -1
        return Calendar.current.date(byAdding: comp, to: self.startOfMonth()!)
    }
}

我的结构：

struct Constants{

    // keys required for making a Login call (POST Method)
    struct LoginKeys {
       .....
    }

    struct RankingKeys {

        static let DateFrom = String(describing: Date().startOfMonth()) //giving me 2016-11-30 16:00:00 +0000 
        static let DateTo  = String(describing: Date().endOfMonth())
//2016-12-30 16:00:00 +0000
    }
}

预期结果：

DateFrom  = "01/12/2016"
DateTo = "31/12/2016"

推荐答案

哟你应该写这个简单的代码：

You should write this simple code:

let dateFormatter = DateFormatter()
let date = Date()
dateFormatter.dateFormat = "dd-MM-yyyy"

开始日期：

let comp: DateComponents = Calendar.current.dateComponents([.year, .month], from: date)
let startOfMonth = Calendar.current.date(from: comp)!
print(dateFormatter.string(from: startOfMonth))

结束日期： p>

For end Date:

var comps2 = DateComponents()
comps2.month = 1
comps2.day = -1
let endOfMonth = Calendar.current.date(byAdding: comps2, to: startOfMonth)
print(dateFormatter.string(from: endOfMonth!)) 

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