blocks|key|4648908|text|使用[[NSDate+date]+timeIntervalSince1970]|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4648909|entityMap^0|2|11|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

use <code>[[NSDate date] timeIntervalSince1970]</code>

blocks|key|4648940|text|-+(void)GetCurrentTimeStamp
++++{
++++++++NSDateFormatter+*objDateformat+=+[[NSDateFormatter+alloc]+init];
++++++++[objDateformat+setDateFormat:@"yyyy-MM-dd"];
++++++++NSString++++*strTime+=+[objDateformat+stringFromDate:[NSDate+date]];
++++++++NSString++++*strUTCTime+=+[self+GetUTCDateTimeFromLocalTime:strTime];//You+can+pass+your+date+but+be+carefull+about+your+date+format+of+NSDateFormatter.
++++++++NSDate+*objUTCDate++=+[objDateformat+dateFromString:strUTCTime];
++++++++long+long+milliseconds+=+(long+long)([objUTCDate+timeIntervalSince1970]+*+1000.0);

++++++++NSString+*strTimeStamp+=+[NSString+stringWithFormat:@"%25lld",milliseconds];
NSLog(@"The+Timestamp+is+=+%25@",strTimeStamp);
++++}

+-+(NSString+*)+GetUTCDateTimeFromLocalTime:(NSString+*)IN_strLocalTime
++++{
++++++++NSDateFormatter+*dateFormatter+=+[[NSDateFormatter+alloc]+init];
++++++++[dateFormatter+setDateFormat:@"yyyy-MM-dd"];
++++++++NSDate++*objDate++++=+[dateFormatter+dateFromString:IN_strLocalTime];
++++++++[dateFormatter+setTimeZone:[NSTimeZone+timeZoneWithAbbreviation:@"UTC"]];
++++++++NSString+*strDateTime+++=+[dateFormatter+stringFromDate:objDate];
++++++++return+strDateTime;
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4648941|注意:-时间戳必须在UTC区域，因此我将我们的本地时间转换为UTC时间。|unstyled|4648942|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>- (void)GetCurrentTimeStamp
 {
 NSDateFormatter *objDateformat = [[NSDateFormatter alloc] init];
 [objDateformat setDateFormat:@"yyyy-MM-dd"];
 NSString *strTime = [objDateformat stringFromDate:[NSDate date]];
 NSString *strUTCTime = [self GetUTCDateTimeFromLocalTime:strTime];//You can pass your date but be carefull about your date format of NSDateFormatter.
 NSDate *objUTCDate = [objDateformat dateFromString:strUTCTime];
 long long milliseconds = (long long)([objUTCDate timeIntervalSince1970] * 1000.0);

 NSString *strTimeStamp = [NSString stringWithFormat:@"%lld",milliseconds];
NSLog(@"The Timestamp is = %@",strTimeStamp);
 }

 - (NSString *) GetUTCDateTimeFromLocalTime:(NSString *)IN_strLocalTime
 {
 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
 [dateFormatter setDateFormat:@"yyyy-MM-dd"];
 NSDate *objDate = [dateFormatter dateFromString:IN_strLocalTime];
 [dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
 NSString *strDateTime = [dateFormatter stringFromDate:objDate];
 return strDateTime;
 }
</code></pre>

NOTE :- The Timestamp must be in UTC Zone, So I convert our local Time to UTC Time.

blocks|key|142407|text|//下面的方法会在转换为毫秒后返回时间戳。返回字符串|type|unstyled|depth|inlineStyleRanges|entityRanges|data|142408|-+(NSString+*)+timeInMiliSeconds
{
++++NSDate+*date+=+[NSDate+date];
++++NSString+*+timeInMS+=+[NSString+stringWithFormat:@"%25lld",+[@(floor([date+timeIntervalSince1970]+*+1000))+longLongValue]];
++++return+timeInMS;
}|code-block|syntax|javascript|142409|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|$]]

// The following method would return you timestamp after converting to milliseconds. [RETURNS STRING]

<pre><code>- (NSString *) timeInMiliSeconds
{
 NSDate *date = [NSDate date];
 NSString * timeInMS = [NSString stringWithFormat:@"%lld", [@(floor([date timeIntervalSince1970] * 1000)) longLongValue]];
 return timeInMS;
}
</code></pre>

blocks|key|4649027|text|如果您想直接在NSDate对象上调用此方法，并以毫秒为单位获取字符串形式的时间戳，请将此方法定义为一个类别：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4649028|@implementation+NSDate+(MyExtensions)
-+(NSString+*)unixTimestampInMilliseconds
{
+++++return+[NSString+stringWithFormat:@"%25.0f",+[self+timeIntervalSince1970]+*+1000];
}|code-block|syntax|javascript|4649029|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'd like to call this method directly on an NSDate object and get the timestamp as a string in milliseconds without any decimal places, define this method as a category:

<pre><code>@implementation NSDate (MyExtensions)
- (NSString *)unixTimestampInMilliseconds
{
 return [NSString stringWithFormat:@"%.0f", [self timeIntervalSince1970] * 1000];
}
</code></pre>

blocks|key|142471|text|还可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|142472|@(time(nil)).stringValue);|code-block|syntax|javascript|142473|获取以秒为单位的时间戳。|142474|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|$]]

Can also use 

<pre><code>@(time(nil)).stringValue);
</code></pre>

for timestamp in seconds.

blocks|key|142502|text|为获取当前时间戳定义一个宏很方便|type|unstyled|depth|inlineStyleRanges|entityRanges|data|142503|class+Constant+{
++++struct+Time+{
++++++++let+now+=+{+round(NSDate().timeIntervalSince1970)+}+//+seconds
++++}
}+|code-block|syntax|javascript|142504|然后，您可以使用let+timestamp+=+Constant.Time.now()|offset|length|style|CODE|142505|entityMap^0|0|0|8|Z|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

It's convenient to define a macro for get current timestamp

<pre><code>class Constant {
 struct Time {
 let now = { round(NSDate().timeIntervalSince1970) } // seconds
 }
} 
</code></pre>

Then you can use <code>let timestamp = Constant.Time.now()</code>

blocks|key|4649087|text|Swift：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4649088|我有一个通过相机预览显示TimeStamp的UILabel。|4649089|++++var+timeStampTimer+:+NSTimer?
++++var+dateEnabled:++Bool?
++++var+timeEnabled:+Bool?
+++@IBOutlet+weak+var+timeStampLabel:+UILabel!

override+func+viewDidLoad()+{
++++++++super.viewDidLoad()
//Setting+Initial+Values+to+be+false.
++++++++dateEnabled+=++false
++++++++timeEnabled+=++false
}

override+func+viewWillAppear(animated:+Bool)+{

++++++++//Current+Date+and+Time+on+Preview+View
++++++++timeStampLabel.text+=+timeStamp
++++++++self.timeStampTimer+=+NSTimer.scheduledTimerWithTimeInterval(1.0,target:+self,+selector:+Selector("updateCurrentDateAndTimeOnTimeStamperLabel"),userInfo:+nil,repeats:+true)
}

func+updateCurrentDateAndTimeOnTimeStamperLabel()
++++{
//Every+Second,+it+updates+time.

++++++++switch+(dateEnabled,+timeEnabled)+{
++++++++case+(true?,+true?):
++++++++++++timeStampLabel.text+=++NSDateFormatter.localizedStringFromDate(NSDate(),+dateStyle:+.LongStyle,+timeStyle:+.MediumStyle)
++++++++++++break;
++++++++case+(true?,+false?):
++++++++++++timeStampLabel.text+=+NSDateFormatter.localizedStringFromDate(NSDate(),+dateStyle:+.LongStyle,+timeStyle:+.NoStyle)
++++++++++++break;

++++++++case+(false?,+true?):
++++++++++++timeStampLabel.text+=+NSDateFormatter.localizedStringFromDate(NSDate(),+dateStyle:+.NoStyle,+timeStyle:+.MediumStyle)
++++++++++++break;
++++++++case+(false?,+false?):
++++++++++++timeStampLabel.text+=++NSDateFormatter.localizedStringFromDate(NSDate(),+dateStyle:+.NoStyle,+timeStyle:+.NoStyle)
++++++++++++break;
++++++++default:
++++++++++++break;

++++++++}
++++}|code-block|syntax|javascript|4649090|我正在设置一个设置按钮来触发alertView。|4649091|@IBAction+func+settingsButton(sender+:+AnyObject)+{


let+cameraSettingsAlert+=+UIAlertController(title:+NSLocalizedString("Please+choose+a+course",+comment:+""),+message:+NSLocalizedString("",+comment:+""),+preferredStyle:+.ActionSheet)

let+timeStampOnAction+=+UIAlertAction(title:+NSLocalizedString("Time+Stamp+on+Photo",+comment:+""),+style:+.Default)+{+action+in

++++self.dateEnabled+=+true
++++self.timeEnabled+=++true

}
let+timeStampOffAction+=+UIAlertAction(title:+NSLocalizedString("TimeStamp+Off",+comment:+""),+style:+.Default)+{+action+in

++++self.dateEnabled+=+false
++++self.timeEnabled+=++false

}
let+dateOnlyAction+=+UIAlertAction(title:+NSLocalizedString("Date+Only",+comment:+""),+style:+.Default)+{+action+in

++++self.dateEnabled+=+true
++++self.timeEnabled+=++false


}
let+timeOnlyAction+=+UIAlertAction(title:+NSLocalizedString("Time+Only",+comment:+""),+style:+.Default)+{+action+in

++++self.dateEnabled+=+false
++++self.timeEnabled+=++true
}

let+cancel+=+UIAlertAction(title:+NSLocalizedString("Cancel",+comment:+""),+style:+.Cancel)+{+action+in

}
cameraSettingsAlert.addAction(cancel)
cameraSettingsAlert.addAction(timeStampOnAction)
cameraSettingsAlert.addAction(timeStampOffAction)
cameraSettingsAlert.addAction(dateOnlyAction)
cameraSettingsAlert.addAction(timeOnlyAction)

self.presentViewController(cameraSettingsAlert,+animated:+true,+completion:+nil)|4649092|}|4649093|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Swift: 

I have a UILabel which shows TimeStamp over a Camera Preview.

<pre><code> var timeStampTimer : NSTimer?
 var dateEnabled: Bool?
 var timeEnabled: Bool?
 @IBOutlet weak var timeStampLabel: UILabel!

override func viewDidLoad() {
 super.viewDidLoad()
//Setting Initial Values to be false.
 dateEnabled = false
 timeEnabled = false
}

override func viewWillAppear(animated: Bool) {

 //Current Date and Time on Preview View
 timeStampLabel.text = timeStamp
 self.timeStampTimer = NSTimer.scheduledTimerWithTimeInterval(1.0,target: self, selector: Selector("updateCurrentDateAndTimeOnTimeStamperLabel"),userInfo: nil,repeats: true)
}

func updateCurrentDateAndTimeOnTimeStamperLabel()
 {
//Every Second, it updates time.

 switch (dateEnabled, timeEnabled) {
 case (true?, true?):
 timeStampLabel.text = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .LongStyle, timeStyle: .MediumStyle)
 break;
 case (true?, false?):
 timeStampLabel.text = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .LongStyle, timeStyle: .NoStyle)
 break;

 case (false?, true?):
 timeStampLabel.text = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .NoStyle, timeStyle: .MediumStyle)
 break;
 case (false?, false?):
 timeStampLabel.text = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .NoStyle, timeStyle: .NoStyle)
 break;
 default:
 break;

 }
 }
</code></pre>

I am setting up a setting Button to trigger a alertView.

<pre><code>@IBAction func settingsButton(sender : AnyObject) {


let cameraSettingsAlert = UIAlertController(title: NSLocalizedString("Please choose a course", comment: ""), message: NSLocalizedString("", comment: ""), preferredStyle: .ActionSheet)

let timeStampOnAction = UIAlertAction(title: NSLocalizedString("Time Stamp on Photo", comment: ""), style: .Default) { action in

 self.dateEnabled = true
 self.timeEnabled = true

}
let timeStampOffAction = UIAlertAction(title: NSLocalizedString("TimeStamp Off", comment: ""), style: .Default) { action in

 self.dateEnabled = false
 self.timeEnabled = false

}
let dateOnlyAction = UIAlertAction(title: NSLocalizedString("Date Only", comment: ""), style: .Default) { action in

 self.dateEnabled = true
 self.timeEnabled = false


}
let timeOnlyAction = UIAlertAction(title: NSLocalizedString("Time Only", comment: ""), style: .Default) { action in

 self.dateEnabled = false
 self.timeEnabled = true
}

let cancel = UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .Cancel) { action in

}
cameraSettingsAlert.addAction(cancel)
cameraSettingsAlert.addAction(timeStampOnAction)
cameraSettingsAlert.addAction(timeStampOffAction)
cameraSettingsAlert.addAction(dateOnlyAction)
cameraSettingsAlert.addAction(timeOnlyAction)

self.presentViewController(cameraSettingsAlert, animated: true, completion: nil)
</code></pre>

}

blocks|key|4649143|text|++++NSDate+*todaysDate+=+[NSDate+new];
NSDateFormatter+*formatter+=+[NSDateFormatter+new];
[formatter+setDateFormat:@"MM-dd-yyyy+HH:mm:ss"];
NSString+*strDateTime+=+[formatter+stringFromDate:todaysDate];

NSString+*strFileName+=+[NSString+stringWithFormat:@"/Users/Shared/Recording_%25@.mov",strDateTime];
NSLog(@"filename:%25@",strFileName);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4649144|日志为:+filename:/Users/Shared/Recording_06-28-2016+12:53:26.mov|unstyled|4649145|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> NSDate *todaysDate = [NSDate new];
NSDateFormatter *formatter = [NSDateFormatter new];
[formatter setDateFormat:@"MM-dd-yyyy HH:mm:ss"];
NSString *strDateTime = [formatter stringFromDate:todaysDate];

NSString *strFileName = [NSString stringWithFormat:@"/Users/Shared/Recording_%@.mov",strDateTime];
NSLog(@"filename:%@",strFileName);
</code></pre>

Log will be : filename:/Users/Shared/Recording_06-28-2016 12:53:26.mov

blocks|key|4649150|text|如果您需要将时间戳作为字符串。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4649151|time_t+result+=+time(NULL);++++++++++++++++
NSString+*timeStampString+=+[@(result)+stringValue];|code-block|syntax|javascript|4649152|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 need time stamp as a string. 

<pre><code>time_t result = time(NULL); 
NSString *timeStampString = [@(result) stringValue];
</code></pre>

I have a basic method which gets the current time and sets it in a string. However, how can I get it to format the current date &amp; time in a UNIX since-1970 timestamp format?

Here is my code:

<pre><code>NSDate *currentTime = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSString *resultString = [dateFormatter stringFromDate: currentTime];
</code></pre>

Is it possible to use <code>NSDateFormatter</code> to change the 'resultString' into a timestamp?

Get current NSDate in timestamp format

Swift

我有一个基本方法，它获取当前时间并将其设置在一个字符串中。但是，如何才能将当前日期和时间格式化为UNIX自1970年以来的时间戳格式？下面是我的代码：NSDate *currentTime = [NSDate date];NSDateFormatter *dateFormatter = [[NSDateFormatte...

问获取时间戳格式的当前NSDate
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