Convert milliseconds to NSDate

问题

I have this \"1273636800000\" and I want to convert it to this format \"Wed Mar 03 2010 00:00:00 GMT-0500 (EST)\"

I need to convert this milliseconds to NSDate format.

I tried this

NSDate *tr = [NSDate dateWithTimeIntervalSince1970:1273636800000];

and

NSDate *tr = [NSDate dateWithTimeIntervalSinceReferenceDate:1273636800000];

and

NSDate *tr = [NSDate dateWithTimeIntervalSinceNow:1273636800000];

But I can\'t get it to work, anyone had a similar problem and found the solution

回答1:

These functions (dateWithTimeIntervalSince1970, dateWithTimeIntervalSinceReferenceDate, dateWithTimeIntervalSinceNow) accept parameter in seconds.

NSDate *date = [NSDate dateWithTimeIntervalSince1970:(ms / 1000.0)];

You should pass 1273636800.000

NSDate *date = [NSDate dateWithTimeIntervalSince1970:(1273636800 / 1000.0)];

回答2:

Divide by 1000 to get millis in seconds, that's what you want.

回答3:

A simple one-line Swift 2 function:

func dateFromMilliseconds(ms: NSNumber) -> NSDate {
    return NSDate(timeIntervalSince1970:Double(ms) / 1000.0)
}

来源：https://stackoverflow.com/questions/2741199/convert-milliseconds-to-nsdate