在 swift 内从 NSTimeInterval 转换为小时、分钟、秒、毫秒
conversion from NSTimeInterval to hour,minutes,seconds,milliseconds in swift
我的代码在这里:
func stringFromTimeInterval(interval:NSTimeInterval) -> NSString {
var ti = NSInteger(interval)
var ms = ti * 1000
var seconds = ti % 60
var minutes = (ti / 60) % 60
var hours = (ti / 3600)
return NSString(format: "%0.2d:%0.2d:%0.2d",hours,minutes,seconds,ms)
}
在输出中,毫秒给出了错误的 result.Please 给出了如何正确找到毫秒的想法。
Swift支持浮点数的余数计算,所以我们可以用% 1
。
var ms = Int((interval % 1) * 1000)
如:
func stringFromTimeInterval(interval: TimeInterval) -> NSString {
let ti = NSInteger(interval)
let ms = Int((interval % 1) * 1000)
let seconds = ti % 60
let minutes = (ti / 60) % 60
let hours = (ti / 3600)
return NSString(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
结果:
stringFromTimeInterval(12345.67) "03:25:45.670"
Swift 4:
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
}
使用:
self.timeLabel.text = player.duration.stringFromTimeInterval()
等同于 Objective-C,基于@matthias-bauch 的回答。
+ (NSString *)stringFromTimeInterval:(NSTimeInterval)timeInterval
{
NSInteger interval = timeInterval;
NSInteger ms = (fmod(timeInterval, 1) * 1000);
long seconds = interval % 60;
long minutes = (interval / 60) % 60;
long hours = (interval / 3600);
return [NSString stringWithFormat:@"%0.2ld:%0.2ld:%0.2ld,%0.3ld", hours, minutes, seconds, (long)ms];
}
用于在 swift 2.0 中将小时和分钟转换为秒:
///RETORNA TOTAL DE SEGUNDOS DE HORA:MINUTOS
func horasMinutosToSeconds (HoraMinutos:String) -> Int {
let formatar = NSDateFormatter()
let calendar = NSCalendar.currentCalendar()
formatar.locale = NSLocale.currentLocale()
formatar.dateFormat = "HH:mm"
let Inicio = formatar.dateFromString(HoraMinutos)
let comp = calendar.components([NSCalendarUnit.Hour, NSCalendarUnit.Minute], fromDate: Inicio!)
let hora = comp.hour
let minute = comp.minute
let hours = hora*3600
let minuts = minute*60
let totseconds = hours+minuts
return totseconds
}
转换为 swift 2 扩展 + 变量格式:
extension NSTimeInterval {
func timeIntervalAsString(format format : String = "hh:mm:ss:sss") -> String {
let ms = Int((self % 1) * 1000)
let asInt = NSInteger(self)
let s = asInt % 60
let m = (asInt / 60) % 60
let h = (asInt / 3600)
var value = format
value = value.replace("hh", replacement: String(format: "%0.2d", h))
value = value.replace("mm", replacement: String(format: "%0.2d", m))
value = value.replace("sss", replacement: String(format: "%0.3d", ms))
value = value.replace("ss", replacement: String(format: "%0.2d", s))
return value
}
}
extension String {
/**
Replaces all occurances from string with replacement
*/
public func replace(string:String, replacement:String) -> String {
return self.stringByReplacingOccurrencesOfString(string, withString: replacement, options: NSStringCompareOptions.LiteralSearch, range: nil)
}
}
swift @hixField 答案的 3 版本,现在有天数并处理以前的日期:
extension TimeInterval {
func timeIntervalAsString(_ format : String = "dd days, hh hours, mm minutes, ss seconds, sss ms") -> String {
var asInt = NSInteger(self)
let ago = (asInt < 0)
if (ago) {
asInt = -asInt
}
let ms = Int(self.truncatingRemainder(dividingBy: 1) * (ago ? -1000 : 1000))
let s = asInt % 60
let m = (asInt / 60) % 60
let h = ((asInt / 3600))%24
let d = (asInt / 86400)
var value = format
value = value.replacingOccurrences(of: "hh", with: String(format: "%0.2d", h))
value = value.replacingOccurrences(of: "mm", with: String(format: "%0.2d", m))
value = value.replacingOccurrences(of: "sss", with: String(format: "%0.3d", ms))
value = value.replacingOccurrences(of: "ss", with: String(format: "%0.2d", s))
value = value.replacingOccurrences(of: "dd", with: String(format: "%d", d))
if (ago) {
value += " ago"
}
return value
}
}
SWIFT 3 分机
我认为这种方式更容易看出每件作品的来源,因此您可以更轻松地根据需要对其进行修改
extension TimeInterval {
private var milliseconds: Int {
return Int((truncatingRemainder(dividingBy: 1)) * 1000)
}
private var seconds: Int {
return Int(self) % 60
}
private var minutes: Int {
return (Int(self) / 60 ) % 60
}
private var hours: Int {
return Int(self) / 3600
}
var stringTime: String {
if hours != 0 {
return "\(hours)h \(minutes)m \(seconds)s"
} else if minutes != 0 {
return "\(minutes)m \(seconds)s"
} else if milliseconds != 0 {
return "\(seconds)s \(milliseconds)ms"
} else {
return "\(seconds)s"
}
}
}
Swift 3 iOS 8+、macOS 10.10+ 的解决方案,如果时间的零填充无关紧要:
func stringFromTime(interval: TimeInterval) -> String {
let ms = Int(interval.truncatingRemainder(dividingBy: 1) * 1000)
let formatter = DateComponentsFormatter()
formatter.allowedUnits = [.hour, .minute, .second]
return formatter.string(from: interval)! + ".\(ms)"
}
print(stringFromTime(interval: 12345.67)) // "3:25:45.670"
Swift 4、没有使用.remainder
(其中returns错误值):
func stringFromTimeInterval(interval: Double) -> NSString {
let hours = (Int(interval) / 3600)
let minutes = Int(interval / 60) - Int(hours * 60)
let seconds = Int(interval) - (Int(interval / 60) * 60)
return NSString(format: "%0.2d:%0.2d:%0.2d",hours,minutes,seconds)
}
Swift 4:
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
}
使用:
self.timeLabel.text = player.duration.stringFromTimeInterval()
我认为这些答案中的大部分都已过时,如果您想显示表示时间间隔的字符串,您应该始终使用 DateComponentsFormatter,因为它将为您处理填充和本地化。
Swift 4 扩展 - 纳秒精度
import Foundation
extension TimeInterval {
func toReadableString() -> String {
// Nanoseconds
let ns = Int((self.truncatingRemainder(dividingBy: 1)) * 1000000000) % 1000
// Microseconds
let us = Int((self.truncatingRemainder(dividingBy: 1)) * 1000000) % 1000
// Milliseconds
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
// Seconds
let s = Int(self) % 60
// Minutes
let mn = (Int(self) / 60) % 60
// Hours
let hr = (Int(self) / 3600)
var readableStr = ""
if hr != 0 {
readableStr += String(format: "%0.2dhr ", hr)
}
if mn != 0 {
readableStr += String(format: "%0.2dmn ", mn)
}
if s != 0 {
readableStr += String(format: "%0.2ds ", s)
}
if ms != 0 {
readableStr += String(format: "%0.3dms ", ms)
}
if us != 0 {
readableStr += String(format: "%0.3dus ", us)
}
if ns != 0 {
readableStr += String(format: "%0.3dns", ns)
}
return readableStr
}
}
Swift 4(有范围检查~无崩溃)
import Foundation
extension TimeInterval {
var stringValue: String {
guard self > 0 && self < Double.infinity else {
return "unknown"
}
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d", hours, minutes, seconds, ms)
}
}
这是@maslovsa 的略微改进版本,具有 Precision
输入参数:
import Foundation
extension TimeInterval {
enum Precision {
case hours, minutes, seconds, milliseconds
}
func toString(precision: Precision) -> String? {
guard self > 0 && self < Double.infinity else {
assertionFailure("wrong value")
return nil
}
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
switch precision {
case .hours:
return String(format: "%0.2d", hours)
case .minutes:
return String(format: "%0.2d:%0.2d", hours, minutes)
case .seconds:
return String(format: "%0.2d:%0.2d:%0.2d", hours, minutes, seconds)
case .milliseconds:
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d", hours, minutes, seconds, ms)
}
}
}
和用法:
let time: TimeInterval = (60 * 60 * 8) + 60 * 24.18
let hours = time.toString(precision: .hours) // 08
let minutes = time.toString(precision: .minutes) // 08:24
let seconds = time.toString(precision: .seconds) // 08:24:10
let milliseconds = time.toString(precision: .milliseconds) // 08:24:10.799
Swift 5. 没有毫秒和一些条件格式(即如果有 0 小时,则不显示小时)。
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
var formatString = ""
if hours == 0 {
if(minutes < 10) {
formatString = "%2d:%0.2d"
}else {
formatString = "%0.2d:%0.2d"
}
return String(format: formatString,minutes,seconds)
}else {
formatString = "%2d:%0.2d:%0.2d"
return String(format: formatString,hours,minutes,seconds)
}
}
}
您可以使用 Measurement
和 UnitDuration
将 TimeInterval
值转换为任何持续时间单位。要在结果中查看毫秒数,您需要 UnitDuration.milliseconds
,这需要 iOS 13.0、tvOS 13.0、watchOS 6.0 或 macOS 10.15。我把所有应该做的动作都放在func convertDurationUnitValueToOtherUnits(durationValue:durationUnit:smallestUnitDuration:)
(Swift 5.1.3/Xcode 11.3.1):
import Foundation
@available(iOS 10.0, tvOS 10.0, watchOS 3.0, macOS 10.12, *)
func convert<MeasurementType: BinaryInteger>(
measurementValue: Double, unitDuration: UnitDuration, smallestUnitDuration: UnitDuration
) -> (MeasurementType, Double) {
let measurementSmallest = Measurement(
value: measurementValue,
unit: smallestUnitDuration
)
let measurementSmallestValue = MeasurementType(measurementSmallest.converted(to: unitDuration).value)
let measurementCurrentUnit = Measurement(
value: Double(measurementSmallestValue),
unit: unitDuration
)
let currentUnitCount = measurementCurrentUnit.converted(to: smallestUnitDuration).value
return (measurementSmallestValue, measurementValue - currentUnitCount)
}
@available(iOS 10.0, tvOS 10.0, watchOS 3.0, macOS 10.12, *)
func convertDurationUnitValueToOtherUnits<MeasurementType: BinaryInteger>(
durationValue: Double,
durationUnit: UnitDuration,
smallestUnitDuration: UnitDuration
) -> [MeasurementType] {
let basicDurationUnits: [UnitDuration] = [.hours, .minutes, .seconds]
let additionalDurationUnits: [UnitDuration]
if #available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 10.15, *) {
additionalDurationUnits = [.milliseconds, .microseconds, .nanoseconds, .picoseconds]
} else {
additionalDurationUnits = []
}
let allDurationUnits = basicDurationUnits + additionalDurationUnits
return sequence(
first: (
convert(
measurementValue: Measurement(
value: durationValue,
unit: durationUnit
).converted(to: smallestUnitDuration).value,
unitDuration: allDurationUnits[0],
smallestUnitDuration: smallestUnitDuration
),
0
)
) {
if allDurationUnits[[=10=].1] == smallestUnitDuration || allDurationUnits.count <= [=10=].1 + 1 {
return nil
} else {
return (
convert(
measurementValue: [=10=].0.1,
unitDuration: allDurationUnits[[=10=].1 + 1],
smallestUnitDuration: smallestUnitDuration
),
[=10=].1 + 1
)
}
}.compactMap { [=10=].0.0 }
}
您可以这样称呼它:
let intervalToConvert: TimeInterval = 12345.67
let result: [Int] = convertDurationUnitValueToOtherUnits(
durationValue: intervalToConvert,
durationUnit: .seconds,
smallestUnitDuration: .milliseconds
)
print("\(result[0]) hours, \(result[1]) minutes, \(result[2]) seconds, \(result[3]) milliseconds") // 3 hours, 25 minutes, 45 seconds, 670 milliseconds
如您所见,我没有使用 60 和 1000 等数字常量来获得结果。
我的代码在这里:
func stringFromTimeInterval(interval:NSTimeInterval) -> NSString {
var ti = NSInteger(interval)
var ms = ti * 1000
var seconds = ti % 60
var minutes = (ti / 60) % 60
var hours = (ti / 3600)
return NSString(format: "%0.2d:%0.2d:%0.2d",hours,minutes,seconds,ms)
}
在输出中,毫秒给出了错误的 result.Please 给出了如何正确找到毫秒的想法。
Swift支持浮点数的余数计算,所以我们可以用% 1
。
var ms = Int((interval % 1) * 1000)
如:
func stringFromTimeInterval(interval: TimeInterval) -> NSString {
let ti = NSInteger(interval)
let ms = Int((interval % 1) * 1000)
let seconds = ti % 60
let minutes = (ti / 60) % 60
let hours = (ti / 3600)
return NSString(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
结果:
stringFromTimeInterval(12345.67) "03:25:45.670"
Swift 4:
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
}
使用:
self.timeLabel.text = player.duration.stringFromTimeInterval()
等同于 Objective-C,基于@matthias-bauch 的回答。
+ (NSString *)stringFromTimeInterval:(NSTimeInterval)timeInterval
{
NSInteger interval = timeInterval;
NSInteger ms = (fmod(timeInterval, 1) * 1000);
long seconds = interval % 60;
long minutes = (interval / 60) % 60;
long hours = (interval / 3600);
return [NSString stringWithFormat:@"%0.2ld:%0.2ld:%0.2ld,%0.3ld", hours, minutes, seconds, (long)ms];
}
用于在 swift 2.0 中将小时和分钟转换为秒:
///RETORNA TOTAL DE SEGUNDOS DE HORA:MINUTOS
func horasMinutosToSeconds (HoraMinutos:String) -> Int {
let formatar = NSDateFormatter()
let calendar = NSCalendar.currentCalendar()
formatar.locale = NSLocale.currentLocale()
formatar.dateFormat = "HH:mm"
let Inicio = formatar.dateFromString(HoraMinutos)
let comp = calendar.components([NSCalendarUnit.Hour, NSCalendarUnit.Minute], fromDate: Inicio!)
let hora = comp.hour
let minute = comp.minute
let hours = hora*3600
let minuts = minute*60
let totseconds = hours+minuts
return totseconds
}
转换为 swift 2 扩展 + 变量格式:
extension NSTimeInterval {
func timeIntervalAsString(format format : String = "hh:mm:ss:sss") -> String {
let ms = Int((self % 1) * 1000)
let asInt = NSInteger(self)
let s = asInt % 60
let m = (asInt / 60) % 60
let h = (asInt / 3600)
var value = format
value = value.replace("hh", replacement: String(format: "%0.2d", h))
value = value.replace("mm", replacement: String(format: "%0.2d", m))
value = value.replace("sss", replacement: String(format: "%0.3d", ms))
value = value.replace("ss", replacement: String(format: "%0.2d", s))
return value
}
}
extension String {
/**
Replaces all occurances from string with replacement
*/
public func replace(string:String, replacement:String) -> String {
return self.stringByReplacingOccurrencesOfString(string, withString: replacement, options: NSStringCompareOptions.LiteralSearch, range: nil)
}
}
swift @hixField 答案的 3 版本,现在有天数并处理以前的日期:
extension TimeInterval {
func timeIntervalAsString(_ format : String = "dd days, hh hours, mm minutes, ss seconds, sss ms") -> String {
var asInt = NSInteger(self)
let ago = (asInt < 0)
if (ago) {
asInt = -asInt
}
let ms = Int(self.truncatingRemainder(dividingBy: 1) * (ago ? -1000 : 1000))
let s = asInt % 60
let m = (asInt / 60) % 60
let h = ((asInt / 3600))%24
let d = (asInt / 86400)
var value = format
value = value.replacingOccurrences(of: "hh", with: String(format: "%0.2d", h))
value = value.replacingOccurrences(of: "mm", with: String(format: "%0.2d", m))
value = value.replacingOccurrences(of: "sss", with: String(format: "%0.3d", ms))
value = value.replacingOccurrences(of: "ss", with: String(format: "%0.2d", s))
value = value.replacingOccurrences(of: "dd", with: String(format: "%d", d))
if (ago) {
value += " ago"
}
return value
}
}
SWIFT 3 分机
我认为这种方式更容易看出每件作品的来源,因此您可以更轻松地根据需要对其进行修改
extension TimeInterval {
private var milliseconds: Int {
return Int((truncatingRemainder(dividingBy: 1)) * 1000)
}
private var seconds: Int {
return Int(self) % 60
}
private var minutes: Int {
return (Int(self) / 60 ) % 60
}
private var hours: Int {
return Int(self) / 3600
}
var stringTime: String {
if hours != 0 {
return "\(hours)h \(minutes)m \(seconds)s"
} else if minutes != 0 {
return "\(minutes)m \(seconds)s"
} else if milliseconds != 0 {
return "\(seconds)s \(milliseconds)ms"
} else {
return "\(seconds)s"
}
}
}
Swift 3 iOS 8+、macOS 10.10+ 的解决方案,如果时间的零填充无关紧要:
func stringFromTime(interval: TimeInterval) -> String {
let ms = Int(interval.truncatingRemainder(dividingBy: 1) * 1000)
let formatter = DateComponentsFormatter()
formatter.allowedUnits = [.hour, .minute, .second]
return formatter.string(from: interval)! + ".\(ms)"
}
print(stringFromTime(interval: 12345.67)) // "3:25:45.670"
Swift 4、没有使用.remainder
(其中returns错误值):
func stringFromTimeInterval(interval: Double) -> NSString {
let hours = (Int(interval) / 3600)
let minutes = Int(interval / 60) - Int(hours * 60)
let seconds = Int(interval) - (Int(interval / 60) * 60)
return NSString(format: "%0.2d:%0.2d:%0.2d",hours,minutes,seconds)
}
Swift 4:
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d",hours,minutes,seconds,ms)
}
}
使用:
self.timeLabel.text = player.duration.stringFromTimeInterval()
我认为这些答案中的大部分都已过时,如果您想显示表示时间间隔的字符串,您应该始终使用 DateComponentsFormatter,因为它将为您处理填充和本地化。
Swift 4 扩展 - 纳秒精度
import Foundation
extension TimeInterval {
func toReadableString() -> String {
// Nanoseconds
let ns = Int((self.truncatingRemainder(dividingBy: 1)) * 1000000000) % 1000
// Microseconds
let us = Int((self.truncatingRemainder(dividingBy: 1)) * 1000000) % 1000
// Milliseconds
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
// Seconds
let s = Int(self) % 60
// Minutes
let mn = (Int(self) / 60) % 60
// Hours
let hr = (Int(self) / 3600)
var readableStr = ""
if hr != 0 {
readableStr += String(format: "%0.2dhr ", hr)
}
if mn != 0 {
readableStr += String(format: "%0.2dmn ", mn)
}
if s != 0 {
readableStr += String(format: "%0.2ds ", s)
}
if ms != 0 {
readableStr += String(format: "%0.3dms ", ms)
}
if us != 0 {
readableStr += String(format: "%0.3dus ", us)
}
if ns != 0 {
readableStr += String(format: "%0.3dns", ns)
}
return readableStr
}
}
Swift 4(有范围检查~无崩溃)
import Foundation
extension TimeInterval {
var stringValue: String {
guard self > 0 && self < Double.infinity else {
return "unknown"
}
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d", hours, minutes, seconds, ms)
}
}
这是@maslovsa 的略微改进版本,具有 Precision
输入参数:
import Foundation
extension TimeInterval {
enum Precision {
case hours, minutes, seconds, milliseconds
}
func toString(precision: Precision) -> String? {
guard self > 0 && self < Double.infinity else {
assertionFailure("wrong value")
return nil
}
let time = NSInteger(self)
let ms = Int((self.truncatingRemainder(dividingBy: 1)) * 1000)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
switch precision {
case .hours:
return String(format: "%0.2d", hours)
case .minutes:
return String(format: "%0.2d:%0.2d", hours, minutes)
case .seconds:
return String(format: "%0.2d:%0.2d:%0.2d", hours, minutes, seconds)
case .milliseconds:
return String(format: "%0.2d:%0.2d:%0.2d.%0.3d", hours, minutes, seconds, ms)
}
}
}
和用法:
let time: TimeInterval = (60 * 60 * 8) + 60 * 24.18
let hours = time.toString(precision: .hours) // 08
let minutes = time.toString(precision: .minutes) // 08:24
let seconds = time.toString(precision: .seconds) // 08:24:10
let milliseconds = time.toString(precision: .milliseconds) // 08:24:10.799
Swift 5. 没有毫秒和一些条件格式(即如果有 0 小时,则不显示小时)。
extension TimeInterval{
func stringFromTimeInterval() -> String {
let time = NSInteger(self)
let seconds = time % 60
let minutes = (time / 60) % 60
let hours = (time / 3600)
var formatString = ""
if hours == 0 {
if(minutes < 10) {
formatString = "%2d:%0.2d"
}else {
formatString = "%0.2d:%0.2d"
}
return String(format: formatString,minutes,seconds)
}else {
formatString = "%2d:%0.2d:%0.2d"
return String(format: formatString,hours,minutes,seconds)
}
}
}
您可以使用 Measurement
和 UnitDuration
将 TimeInterval
值转换为任何持续时间单位。要在结果中查看毫秒数,您需要 UnitDuration.milliseconds
,这需要 iOS 13.0、tvOS 13.0、watchOS 6.0 或 macOS 10.15。我把所有应该做的动作都放在func convertDurationUnitValueToOtherUnits(durationValue:durationUnit:smallestUnitDuration:)
(Swift 5.1.3/Xcode 11.3.1):
import Foundation
@available(iOS 10.0, tvOS 10.0, watchOS 3.0, macOS 10.12, *)
func convert<MeasurementType: BinaryInteger>(
measurementValue: Double, unitDuration: UnitDuration, smallestUnitDuration: UnitDuration
) -> (MeasurementType, Double) {
let measurementSmallest = Measurement(
value: measurementValue,
unit: smallestUnitDuration
)
let measurementSmallestValue = MeasurementType(measurementSmallest.converted(to: unitDuration).value)
let measurementCurrentUnit = Measurement(
value: Double(measurementSmallestValue),
unit: unitDuration
)
let currentUnitCount = measurementCurrentUnit.converted(to: smallestUnitDuration).value
return (measurementSmallestValue, measurementValue - currentUnitCount)
}
@available(iOS 10.0, tvOS 10.0, watchOS 3.0, macOS 10.12, *)
func convertDurationUnitValueToOtherUnits<MeasurementType: BinaryInteger>(
durationValue: Double,
durationUnit: UnitDuration,
smallestUnitDuration: UnitDuration
) -> [MeasurementType] {
let basicDurationUnits: [UnitDuration] = [.hours, .minutes, .seconds]
let additionalDurationUnits: [UnitDuration]
if #available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 10.15, *) {
additionalDurationUnits = [.milliseconds, .microseconds, .nanoseconds, .picoseconds]
} else {
additionalDurationUnits = []
}
let allDurationUnits = basicDurationUnits + additionalDurationUnits
return sequence(
first: (
convert(
measurementValue: Measurement(
value: durationValue,
unit: durationUnit
).converted(to: smallestUnitDuration).value,
unitDuration: allDurationUnits[0],
smallestUnitDuration: smallestUnitDuration
),
0
)
) {
if allDurationUnits[[=10=].1] == smallestUnitDuration || allDurationUnits.count <= [=10=].1 + 1 {
return nil
} else {
return (
convert(
measurementValue: [=10=].0.1,
unitDuration: allDurationUnits[[=10=].1 + 1],
smallestUnitDuration: smallestUnitDuration
),
[=10=].1 + 1
)
}
}.compactMap { [=10=].0.0 }
}
您可以这样称呼它:
let intervalToConvert: TimeInterval = 12345.67
let result: [Int] = convertDurationUnitValueToOtherUnits(
durationValue: intervalToConvert,
durationUnit: .seconds,
smallestUnitDuration: .milliseconds
)
print("\(result[0]) hours, \(result[1]) minutes, \(result[2]) seconds, \(result[3]) milliseconds") // 3 hours, 25 minutes, 45 seconds, 670 milliseconds
如您所见,我没有使用 60 和 1000 等数字常量来获得结果。