我想返回一个日期数组,其中每个日期是 startDate 和 endDate 之间的 15 分钟间隔
即:startDate time is2pm
和 endDate time is 3pm
,期望的结果将是一个包含以下[2:15pm, 2:30pm, 2:45pm]
日期格式的日期的数组。
我收集了一些骨架代码,但还没有达到我想要的结果。
private func getTimeIntervals(startTime: Date, endTime: Date) -> [Date] {
let timeIntervals = []
//get both times sinces refrenced date and divide by 60 to get minutes
let startTimeMinutes = startTime.timeIntervalSinceReferenceDate/60
let endTimeMinutes = endTime.timeIntervalSinceReferenceDate/60
while(startTimeMinutes < endTimeMinutes) {
// Add each 15 minute Date time interval into the timeIntervalsArray
}
return timeIntervals
}
任何帮助将不胜感激,提前致谢。
使用日历功能 date(byAdding:value:to:wrappingComponents:)
func dates(fromStart start: Date,
toEnd end: Date,
component: Calendar.Component,
value: Int) -> [Date] {
var result = [Date]()
var working = start
repeat {
result.append(working)
guard let new = Calendar.current.date(byAdding: component, value: value, to: working) else { return result }
working = new
} while working <= end
return result
}
这是一个正常运行的操场中的代码:
func dates(fromStart start: Date,
toEnd end: Date,
component: Calendar.Component,
value: Int) -> [Date] {
var result = [Date]()
var working = start
repeat {
result.append(working)
guard let new = Calendar.current.date(byAdding: component, value: value, to: working) else { return result }
working = new
} while working <= end
return result
}
extension Date {
var localDate: String {return DateFormatter.localizedString(from: self, dateStyle: .medium, timeStyle: .medium)}
}
let threePMComponents = DateComponents(month: 6, day: 7, hour: 15)
guard let threePM = Calendar.current.date(from: threePMComponents) else {
fatalError()
}
let sixPMComponents = DateComponents(month: 6, day: 7, hour: 18)
guard let sixPM = Calendar.current.date(from: sixPMComponents) else {
fatalError()
}
print("Start time = \(threePM.localDate)")
print("End time = \(sixPM.localDate)")
let datesInRange = dates(fromStart: threePM, toEnd: sixPM, component: .minute, value: 15)
for item in datesInRange {
print(item.localDate)
}
输出是:
Start time = Jun 7, 1 at 3:00:00 PM
End time = Jun 7, 1 at 6:00:00 PM
Jun 7, 1 at 3:00:00 PM
Jun 7, 1 at 3:15:00 PM
Jun 7, 1 at 3:30:00 PM
Jun 7, 1 at 3:45:00 PM
Jun 7, 1 at 4:00:00 PM
Jun 7, 1 at 4:15:00 PM
Jun 7, 1 at 4:30:00 PM
Jun 7, 1 at 4:45:00 PM
Jun 7, 1 at 5:00:00 PM
Jun 7, 1 at 5:15:00 PM
Jun 7, 1 at 5:30:00 PM
Jun 7, 1 at 5:45:00 PM
Jun 7, 1 at 6:00:00 PM
如果您希望该函数“对齐”到指定日历组件的下一个偶数间隔,则会更加复杂。
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