UTC t to local time junk data in swift

Asked Oct 21 '17 at 16:41

Active Oct 21 '17 at 16:49

Viewed 21 times

 let estDf = DateFormatter()
 let gmtDf = DateFormatter()

 gmtDf.timeZone = TimeZone(identifier: "UTC")
 gmtDf.dateFormat = "yyyy-MM-dd','HH:mm:ss"
 let time_ = "2017-10-21,10:53:23"
 let utcDate = gmtDf.date(from: time_)!
 print("UTC :",utcDate)

 let timeZone = TimeZone.autoupdatingCurrent.identifier as String

 estDf.timeZone =  TimeZone(identifier: timeZone)
 estDf.dateFormat = "yyyy-MM-dd','HH:mm:ss"
 let estDate = estDf.date(from: gmtDf.string(from: utcDate))!

 print("Local time",estDate)

While convert from UTC time format to local time format, time is showing one hour after.

So if the UTC time is

  2017-10-21 10:53:23 +0000

local time time showing as

 2017-10-21 10:53:23 +0000

But the actual time in the device is :

 2017-10-21 9:53:23 +0000

edited Oct 21 '17 at 16:49

jscs

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asked Oct 21 '17 at 16:41

Joe

What is declared as the `time_` variable? – XW_ Oct 21 '17 at 16:46
@LWJ updated the question, – Joe Oct 21 '17 at 16:48
You don't need to set the time zone of a date formatter if you want it to be the local TZ; it takes that value by default. – jscs Oct 21 '17 at 16:49
@JoshCaswell i'm receiving the time_ in UTC, so there i'm setting the time zone as UTC. – Joe Oct 21 '17 at 16:51
The behavior is correct based on the code you've written. What is it that you're trying to accomplish? – jscs Oct 21 '17 at 16:51
I'm talking about `estDf.timeZone = TimeZone(identifer: timeZone)` – jscs Oct 21 '17 at 16:52
@JoshCaswell right now i,m getting the local time as 1 hour pre. – Joe Oct 21 '17 at 16:52
@Joe are you trying to convert the timezone from UTC to local time and print it? – XW_ Oct 21 '17 at 16:53
@LWJ yes, exactly – Joe Oct 21 '17 at 16:54
2

@Joe Don't use that Swift version. It is a totally wrong approach. – Leo Dabus Oct 21 '17 at 17:42

UTC t to local time junk data in swift

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