ios – Swift – 当前位置by currentCalendar()的工作日

let calendar:NSCalendar = NSCalendar.currentCalendar()
let dateComps:NSDateComponents = calendar.components(.CalendarUnitWeekday,fromDate: NSDate())
let dayOfWeek:Int = dateComps.weekday

对于公历,NSDateComponents的工作日属性始终如此
周日为1,周一为2等.

NSCalendar.currentCalendar().firstWeekday

给出当前语言环境中第一个工作日的(索引),在美国可能为1
和2在保加利亚.因此

var dayOfWeek = dateComps.weekday + 1 - calendar.firstWeekday
if dayOfWeek <= 0 {
    dayOfWeek += 7
}

是根据您所在地区的星期几.作为单线：

let dayOfWeek = (dateComps.weekday + 7 - calendar.firstWeekday) % 7 + 1

Swift 3的更新：

let calendar = Calendar.current
var dayOfWeek = calendar.component(.weekday,from: Date()) + 1 - calendar.firstWeekday
if dayOfWeek <= 0 {
    dayOfWeek += 7
}