SwiftDate:Swift中的日期处理库
特性
依赖
使用CocoaPods安装SwiftDate我们需要通过CocoaPods安装SwitDate,如果你还没有安装cocoapods,可以通过如下命令安装 $ gem install cocoapods 然后在你的Xcode项目中的Podfile文件中,添加如下内容: source 'https://github.com/CocoaPods/Specs.git' platform :ios,'8.0' use_frameworks! pod 'SwiftDate' 最后,执行如下命令安装 $ pod install 创建日期
let date_custom = NSDate.date(fromString: "2015-07-26",format: DateFormat.Custom("YYYY-MM-DD"))
let date_from_components = NSDate.date(refDate: nil,year: 2014,month: 01,day: nil,hour: nil,minute: nil,second: nil,tz: "UTC")
let date = "2015-07-26".toDate(formatString: "YYYY-MM-DD")
let todayDate = NSDate.today() let yesterdayDate = NSDate.yesterday() let tomorrowDate = NSDate.tomorrow() 获取日期中年月日等信息我们可以通过NSDate的以下属性获取 .year .month .weekOfMonth .weekday .weekdayOrdinal .day .hour .minute .second .era .firstDayOfWeek // (first day of the week of passed date) .lastDayOfWeek // (last day of the week of passed date) .nearestHour // (nearest hour of the passed date) .isLeapYear() // true if date's represented year is leap .monthDays() // return the number of days in date's represented month 修改日期var date = NSDate() date = date.set("hour",value: 12)! date = date.set("day",value: 1)! 日期运算let date = NSDate() let tomorrow = date+1.day let two_months_ago = date-2.months 时区转换let date = NSDate() //本地时区 let date_as_utc = date.toUTC() //UTC 时间 let date_as_beijing = date_as_utc.toTimezone("UTC+8") //北京时间 日期比较我们可以通过数学运算符比较 let date1 = NSDate.date(fromString: "2015-07-26",format: DateFormat.Custom("YYYY-MM-DD")) let date2 = NSDate.date(fromString: "2015-07-27",format: DateFormat.Custom("YYYY-MM-DD")) if date2 > date1 { // TODO something } 还可以通过NSDate的以下一些方法来比较 let isInRange : Bool = date1.isInTimeRange("11:00","15:00") .isToday() // true if represented date is today .isTomorrow() .isYesterday() .isThisWeek() // true if represented date's week is the current week .isSameWeekOf(date: NSDate) // true if two dates share the same year's week .dateAtWeekStart() // return the date where current's date week starts .beginningOfDay() // return the same date of the sender with time set to 00:00:00 .endOfDay() // return the same date of the sender with time set to 23:59:59 .beginningOfMonth() // return the date which represent the first day of the sender date's month .endOfMonth() // return the date which represent the last day of the sender date's month .beginningOfYear() // return the date which represent the first day of the sender date's year .endOfYear() // return the date which represent the last day of the sender date's year .isWeekday() // true if current sender date is a week day .isWeekend() // true if current sender date is a weekend day (sat/sun) NSDate转换为字符串let string = date.toString(format: DateFormat.Custom("YYYY-MM-DD")) 也可以在转换方法中指定NSDateFormatterStyle let string = date.toString(dateStyle: .ShortStyle timeStyle:.LongStyle relativeDate:true) 还可以通过以下方法转换为特定的字符串 .toISOString() // DateFormat.ISO8601 .toShortString() // short style,both time and date are printed .toMediumString() // medium style,both time and date are printed .toLongString() // full style,both time and date are printed .toShortDateString() // short style,print only date .toShortTimeString() // short style,print only time .toMediumDateString() // medium style,print only date .toMediumTimeString() // medium style,print only time .toLongDateString() // long style,print only date .toLongTimeString() // long style,print only time 最后我们还可以输出相对时间的格式,比如输出"2 hours ago" var d = NSDate()-2.hour var abb = d.toRelativeString(abbreviated: true,maxUnits: 3) println("data: (abb)") GithubSwiftDate
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