如何将时间戳转换为用户友好的时间字符串 [英] How can I convert a timestamp to a user-friendly time string

问题描述

我希望能够在我的申请中提出今天和昨天的最近日期。我有一个日期格式化程序正在使用当前显示日期（从数据记录检索），并将继续使用这个超过几天的任何东西。我只是喜欢iPhone中的短信应用程序显示最近消息的日期，并希望模拟这个。

我必须使用的时间戳在手机下载数据记录的服务器上生成。因此，所有时间都以UTC（即GMT）时间生成。

我一直在讨厌这一段时间，我设计的解决方案看起来似乎很长时间。

$ b $任何人都可以建议如何实现可以做到这一点的方法？

干杯 - Steve。

解决方案

如果这是一个网络应用程序，您可能会发现 PrettyDate 有用。我做了一个vb.net实现，可以轻松地转换成另一种语言：

 公共函数formatDate（ByVal time As DateTime）As String 
 Dim datediff As TimeSpan = Now.Subtract（time）
 
 Dim days As Integer = datediff.TotalDays 
 
如果days< 1然后
 Dim seconds As Integer = datediff.TotalSeconds 
选择案例秒
案例0到60 
返回刚刚
案例61到120 
返回1分钟前
案例121 To 3600 
返回Math.Floor（秒/ 60）& 分钟前
案例3601至7200 
返回1小时前
案例7201至86400 
返回Math.Floor（秒/ 3600）& 小时前
结束选择
 ElseIf days< 31然后
选择案例天
案例1 
返回昨天
案例2到7 
返回日期& 天前
案例是> 7 
返回Math.Ceiling（days / 7）& 周前
结束选择
否则：返回time.ToString（MM / dd / yyyy）
如果
结束函数
  

I want to be able to present "today" and "yesterday" for recent dates in my application. I've got a date formatter in use currently to show dates (retrieved from data records) and will keep using this for anything more than a couple of days old. I just really like the way the SMS app in the iPhone shows dates for recent messages and would like to emulate this.

The time-stamps that I have to work with are generated on a server that the phone downloads the data records from. All times are therefore generated at UTC (i.e. GMT) time.

I've been fiddling about with this for a while the solutions I've devised just seem horribly long-winded.

Can anyone suggest how to implement a method that could do this?

Cheers - Steve.

解决方案

If this is a web app, you might find PrettyDate useful. I made a vb.net implementation that could easily be converted to another language:

Public Function formatDate(ByVal time As DateTime) As String
    Dim datediff As TimeSpan = Now.Subtract(time)

    Dim days As Integer = datediff.TotalDays

    If days < 1 Then
        Dim seconds As Integer = datediff.TotalSeconds
        Select Case seconds
            Case 0 To 60
                Return "just now"
            Case 61 To 120
                Return "1 minute ago"
            Case 121 To 3600
                Return Math.Floor(seconds / 60) & " minutes ago"
            Case 3601 To 7200
                Return "1 hour ago"
            Case 7201 To 86400
                Return Math.Floor(seconds / 3600) & " hours ago"
        End Select
    ElseIf days < 31 Then
        Select Case days
            Case 1
                Return "yesterday"
            Case 2 To 7
                Return days & " days ago"
            Case Is > 7
                Return Math.Ceiling(days / 7) & " weeks ago"
        End Select
    Else : Return time.ToString("MM/dd/yyyy")
    End If
End Function

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