How can I get an NSDate out of "Tonight at 7PM"?
本问题已经有最佳答案,请猛点这里访问。
我有几个字符串显示"今晚 8 点"或"今晚 6 点",我需要找出如何将它们转换为 NSDates。我需要格式为 yyyy/mm/dd/hh。
更新:
现在我返回了错误的年份。我一年收到 9223372036854775807。
1 2 3 4 5 6 7 8 | let calendar = NSCalendar.currentCalendar() let components = calendar.components([.Month, .Day, .Year], fromDate:NSDate()) let year = components.year let month = components.month let day = components.day let NSDateString ="\\(month)/\\(day)/\\(year) at \\(date.chopPrefix(11))" print(NSDateString) |
您不需要自己进行解析。有方便的
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | let string ="Tonight at 7pm" // Create an NSDataDetector that looks for dates let detector = try! NSDataDetector(types: NSTextCheckingType.Date.rawValue) // Create an array of all the possible matches let matches = detector.matchesInString(string, options: [], range: NSMakeRange(0, string.utf16.count)) // Since you are only expecting one date, extract it. if let date = matches.first?.date { print("\\(date)") } else { print("No matches found") } |
这会为您处理语言环境。例如 - 我在哪里给出了结果日期:
1 | "2015-10-04 18:00:00 +0000" |
这为您提供了一个不错的原始
此外,这不会将您与"今天"联系起来。将此代码放在操场上并尝试以下操作:
1 | let string ="Wednesday at 7pm" |
或
1 | let string ="Yesterday at 7pm" |
或
1 | let string ="tomorrow morning at 2" |
它们都返回有效日期。
我现在的工作如下:
1 2 3 4 5 6 7 8 9 10 11 12 | let inputString ="Tonight at 6PM" let calendar = NSCalendar.currentCalendar() let components = calendar.components([.Year, .Month, .Day], fromDate: NSDate()) let dfm = NSDateFormatter() dfm.dateFormat ="'Tonight at' hha" let inputDate = dfm.dateFromString(inputString)! let hour = calendar.components(.Hour, fromDate: inputDate).hour let outputDate = calendar.dateFromComponents(components)?.dateByAddingTimeInterval(Double(hour * 60 * 60)) |
输出:
Oct 4, 2015, 6:00 PM
另一种方法是将今天的日期附加到输入字符串,然后再次将它们一起解析。