blocks|key|4615353|text|您还可以使用NSDateFormatter的便捷方法，例如，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615354|func+printTimestamp()+{
++let+timestamp+=+NSDateFormatter.localizedStringFromDate(NSDate(),+dateStyle:+.MediumStyle,+timeStyle:+.ShortStyle)
++print(timestamp)
}
printTimestamp()+//+Prints+"Sep+9,+2014,+4:30+AM"|code-block|syntax|javascript|4615355|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You could also use NSDateFormatter's convenience method, e.g.,

<pre><code>func printTimestamp() {
 let timestamp = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .MediumStyle, timeStyle: .ShortStyle)
 print(timestamp)
}
printTimestamp() // Prints "Sep 9, 2014, 4:30 AM"
</code></pre>

blocks|key|4615389|text|Swift+2答案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615390|+let+date+=+NSDate()
+let+calendar+=+NSCalendar.currentCalendar()
+let+components+=+calendar.components([.Hour,+.Minute],+fromDate:+date)
+let+hour+=+components.hour
+let+minutes+=+components.minute|code-block|syntax|javascript|4615391|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift 2 answer : 

<pre><code> let date = NSDate()
 let calendar = NSCalendar.currentCalendar()
 let components = calendar.components([.Hour, .Minute], fromDate: date)
 let hour = components.hour
 let minutes = components.minute
</code></pre>

blocks|key|109247|text|如果你只需要一天中的一小时|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109248|let+calendar+=+NSCalendar.currentCalendar()
var+hour+=+calendar.component(.Hour,fromDate:+NSDate())|code-block|syntax|javascript|109249|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if you just need the hour of the day

<pre><code>let calendar = NSCalendar.currentCalendar()
var hour = calendar.component(.Hour,fromDate: NSDate())
</code></pre>

blocks|key|4615462|text|在Swift+3中，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615463|++++let+date+=+Date()
++++let+calendar+=+Calendar.current()

++++let+hour+=+calendar.component(.hour,+from:+date)|code-block|syntax|javascript|4615464|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In Swift 3,

<pre><code> let date = Date()
 let calendar = Calendar.current()

 let hour = calendar.component(.hour, from: date)
</code></pre>

blocks|key|109409|text|我知道有很多答案，但我想我的答案对许多人来说可能更方便。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109410|extension+String+{
++++init(epoch:+Double)+{
++++++++let+date+=+Date(timeIntervalSince1970:+epoch)

++++++++let+dateFormatter+=+DateFormatter()
++++++++dateFormatter.dateFormat+=+"dd/MM/yyyy+HH:mm:ssZZZ"

++++++++self+=+dateFormatter.string(from:+date)
++++}
}|code-block|syntax|javascript|109411|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I know there are a lot of answers but I think that mine may be more convenient to many

<pre><code>extension String {
 init(epoch: Double) {
 let date = Date(timeIntervalSince1970: epoch)

 let dateFormatter = DateFormatter()
 dateFormatter.dateFormat = "dd/MM/yyyy HH:mm:ssZZZ"

 self = dateFormatter.string(from: date)
 }
}
</code></pre>

blocks|key|4615437|text|你可以试试这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615438|func+getTime()+->+(hour:Int,+min:Int,+sec:Int)+{
++++++++let+currentDateTime+=+NSDate()
++++++++let+calendar+=+NSCalendar.currentCalendar()
++++++++let+components+=+calendar.components([.Hour,.Minute,.Second],+fromDate:+currentDateTime)
++++++++let+hour+=+components.hour
++++++++let+min+=+components.minute
++++++++let+sec+=+components.second
++++++++return+(hour,min,sec)
++++}|code-block|syntax|javascript|4615439|现在调用该方法并接收包含小时、分钟和秒的日期|4615440|++++let+currentTime+=+self.getTime()
++++print("Hour:+\(currentTime.hour)+Min:+\(currentTime.min)+Sec:+\(currentTime.sec))")|4615441|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can try this

<pre><code>func getTime() -&gt; (hour:Int, min:Int, sec:Int) {
 let currentDateTime = NSDate()
 let calendar = NSCalendar.currentCalendar()
 let components = calendar.components([.Hour,.Minute,.Second], fromDate: currentDateTime)
 let hour = components.hour
 let min = components.minute
 let sec = components.second
 return (hour,min,sec)
 }
</code></pre>

Now call that method and receive the date with hour,min and second

<pre><code> let currentTime = self.getTime()
 print("Hour: \(currentTime.hour) Min: \(currentTime.min) Sec: \(currentTime.sec))")
</code></pre>

blocks|key|4615481|text|仅适用于特定格式的日期|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615482|++++let+dateFormatter1+=+NSDateFormatter()
++++dateFormatter1.dateStyle+=+.MediumStyle
++++dateFormatter1.timeStyle+=+.NoStyle
++++dateFormatter1.dateFormat+=+"dd-MM-yyyy"
++++let+date+=+dateFormatter1.stringFromDate(NSDate())|code-block|syntax|javascript|4615483|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

for only date in specific format

<pre><code> let dateFormatter1 = NSDateFormatter()
 dateFormatter1.dateStyle = .MediumStyle
 dateFormatter1.timeStyle = .NoStyle
 dateFormatter1.dateFormat = "dd-MM-yyyy"
 let date = dateFormatter1.stringFromDate(NSDate())
</code></pre>

blocks|key|4615691|text|Swift+5|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615692|func+printTimestamp()+{
++++let+timestamp+=+DateFormatter.localizedString(from:+NSDate()+as+Date,+dateStyle:+.medium,+timeStyle:+.short)
++++print(timestamp)
}|code-block|syntax|javascript|4615693|并调用函数printTimestamp()|4615694|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Swift 5 

<pre><code>func printTimestamp() {
 let timestamp = DateFormatter.localizedString(from: NSDate() as Date, dateStyle: .medium, timeStyle: .short)
 print(timestamp)
}
</code></pre>

and Call function printTimestamp()

blocks|key|109515|text|你可以像下面这样使用Swift4或Swift+5：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109516|let+date+=+Date()
let+dateFormatter+=+DateFormatter()
dateFormatter.dateFormat+=+"yyyy-MM-dd"
let+current_date+=+dateFormatter.string(from:+date)
print("current_date-->",current_date)|code-block|syntax|javascript|109517|输出如下：|109518|2020-03-02|109519|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can use Swift4 or Swift 5 bellow like:

<pre><code>let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
let current_date = dateFormatter.string(from: date)
print("current_date--&gt;",current_date)
</code></pre>

output like:

<pre><code>2020-03-02
</code></pre>

blocks|key|4615524|text|您可以在Date上创建一个扩展，这样您就可以很容易地在其他文件中调用它。下面是一个使用计算属性的日期扩展的示例。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4615525|它将打印出来：“今天下午4:55”|4615526|extension+Date+{

++++var+formatter:+DateFormatter?+{
++++++++let+formatter+=+DateFormatter()
++++++++formatter.dateStyle+=+.short
++++++++formatter.timeStyle+=+.short
++++++++formatter.doesRelativeDateFormatting+=+true

++++++++return+formatter
++++}
}|code-block|syntax|javascript|4615527|entityMap^0|4|4|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

You can create an extension on <code>Date</code>, that way you can easily call it in other files. Here is an example of a date extension that uses a computed property. 

It will print it out: "Today, 4:55 PM"

<pre><code>extension Date {

 var formatter: DateFormatter? {
 let formatter = DateFormatter()
 formatter.dateStyle = .short
 formatter.timeStyle = .short
 formatter.doesRelativeDateFormatting = true

 return formatter
 }
}
</code></pre>

blocks|key|109443|text|如果你需要以一种特殊的方式格式化答案，你可以很容易地使用这个方法，默认值=+"dd-MM-yyyy“。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109444|extension+Date+{

+++func+today(format+:+String+=+"dd-MM-yyyy")+->+String{
++++++let+date+=+Date()
++++++let+formatter+=+DateFormatter()
++++++formatter.dateFormat+=+format
++++++return+formatter.string(from:+date)
+++}
}|code-block|syntax|javascript|109445|现在可以使用以下命令获取今天的日期|109446|Date().today()+or+Date().today("dd/MM/yyyy")+|109447|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Incase you need to format the answer in a particular way, you can easily use this method, the default = "dd-MM-yyyy". 

<pre><code>extension Date {

 func today(format : String = "dd-MM-yyyy") -&gt; String{
 let date = Date()
 let formatter = DateFormatter()
 formatter.dateFormat = format
 return formatter.string(from: date)
 }
}
</code></pre>

Getting today's date can now be done using 

<pre><code>Date().today() or Date().today("dd/MM/yyyy") 
</code></pre>

blocks|key|4615630|text|SWIFT+4：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615631|extension+Date
{
++++func+hour()+->+Int
++++{
++++//Get+Hour
++++let+calendar+=+Calendar.current
++++let+components+=+calendar.component(.hour,+from:+self)
++++let+hour+=+components

++++//Return+Hour
++++return+hour
++++}


++++func+minute()+->+Int
++++{
++++//Get+Minute
++++let+calendar+=+Calendar.current
++++let+components+=+calendar.component(.minute,+from:+self)
++++let+minute+=+components

++++//Return+Minute
++++return+minute
++++++++}
}|code-block|syntax|javascript|4615632|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

SWIFT 4:

<pre><code>extension Date
{
 func hour() -&gt; Int
 {
 //Get Hour
 let calendar = Calendar.current
 let components = calendar.component(.hour, from: self)
 let hour = components

 //Return Hour
 return hour
 }


 func minute() -&gt; Int
 {
 //Get Minute
 let calendar = Calendar.current
 let components = calendar.component(.minute, from: self)
 let minute = components

 //Return Minute
 return minute
 }
}
</code></pre>

blocks|key|109451|text|func+getCurrentDate()+->+Date+{
++++let+date+=+Date()
++++let+dateFormatter+=+DateFormatter()
++++dateFormatter.dateFormat+=+"yyyy-MM-dd"
++++let+dateInString++=+dateFormatter.string(from:+date)
++++let+dateinDate+=+dateFormatter.date(from:+dateInString)
++++return+dateinDate!
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|109452|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>func getCurrentDate() -&gt; Date {
 let date = Date()
 let dateFormatter = DateFormatter()
 dateFormatter.dateFormat = "yyyy-MM-dd"
 let dateInString = dateFormatter.string(from: date)
 let dateinDate = dateFormatter.date(from: dateInString)
 return dateinDate!
}
</code></pre>

blocks|key|109484|text|适用于Swift+5+(Xcode+10和Xcode+11)+(来自法国UTC)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109485|func+getCurrentDateTime()+{
++++let+now+=+Date()
++++let+formatter+=+DateFormatter()
++++formatter.locale+=+Locale(identifier:+"fr_FR")
++++formatter.dateFormat+=+"EEEE+dd+MMMM+YYYY+HH:mm"
++++myLabel.text+=+formatter.string(from:+now)
++++myLabel.font+=+UIFont(name:+"HelveticaNeue-Light",+size:+12)
++++myLabel.textColor+=+UIColor.black
}|code-block|syntax|javascript|109486|如果只想显示日期，请设置formatter.dateFormat|offset|length|style|CODE|109487|formatter.dateFormat+=+"EEEE+dd+MMMM+YYYY"|109488|要仅显示小时数，请将formatter.dateFormat更改为|109489|formatter.dateFormat+=+"HH:mm"|109490|别忘了在viewDidLoad上添加getCurrentDateTime()。|109491|entityMap^0|0|0|C|K|0|0|A|K|0|0|4|B|I|K|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@$I|Z|J|10|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@$I|17|J|18|K|L]|$I|19|J|1A|K|L]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|V|$]]

Works with Swift 5 (Xcode 10 &amp; Xcode 11) (from France UTC)

<pre><code>func getCurrentDateTime() {
 let now = Date()
 let formatter = DateFormatter()
 formatter.locale = Locale(identifier: "fr_FR")
 formatter.dateFormat = "EEEE dd MMMM YYYY HH:mm"
 myLabel.text = formatter.string(from: now)
 myLabel.font = UIFont(name: "HelveticaNeue-Light", size: 12)
 myLabel.textColor = UIColor.black
}
</code></pre>

If you want to display only the date, set <code>formatter.dateFormat</code>

<pre><code>formatter.dateFormat = "EEEE dd MMMM YYYY"
</code></pre>

To display only hours, change <code>formatter.dateFormat</code> to

<pre><code>formatter.dateFormat = "HH:mm"
</code></pre>

Don't forget to add <code>getCurrentDateTime()</code> on <code>viewDidLoad</code>.

blocks|key|4615488|text|您可以从Dateformatter获取|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615489|let+dateFormatter+=+DateFormatter()
dateFormatter.dateFormat+=+"dd/MM/yyyy"
let+dateString+=+dateFormatter.string(from:Date())
print(dateString)|code-block|syntax|javascript|4615490|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can get from Dateformatter

<pre><code>let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:Date())
print(dateString)
</code></pre>

blocks|key|109527|text|以下代码是最新的swift版本(5)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109528|func+getTimestamp()->+String+{
+++++let+timestamp+=+DateFormatter.localizedString(from:+Date(),+dateStyle:+.medium,+timeStyle:+.short)
+++++return+"\(timestamp)"
}|code-block|syntax|javascript|109529|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Below code is latest swift version (5):
<pre><code>func getTimestamp()-&gt; String {
 let timestamp = DateFormatter.localizedString(from: Date(), dateStyle: .medium, timeStyle: .short)
 return &quot;\(timestamp)&quot;
}
</code></pre>

Just started with the playground. I'm trying to create a simple app.

I've created a date object like this:

<pre><code>var date = NSDate()
</code></pre>

How can I get the current hour? In other languages I can do something like this:

<pre><code>var hour = date.hour
</code></pre>

But I can't find any properties/methods like that. I've found a method, <code>dateWithCalendarFormat</code>. Should I use that? If so, HOW?

How to get the current time as datetime

Swift

Xcode

刚从操场开始。我正在尝试创建一个简单的应用程序。我创建了一个date对象，如下所示：var date = NSDate()如何获取当前小时数？在其他语言中，我可以这样做：var hour = date.hour但是我找不到任何这样的属性/方法。我找到了一个方法，dateWithCalendarFormat。我应该用这句话吗？如果是这样的话，是怎么做的？

问如何获取当前时间作为datetime
EN

回答 16

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问如何获取当前时间作为datetime
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