i need to convert time to date format - ios

Question

time is string format like 10:27:43. but when i convert in to date format. it is going to change Sat Jan 1 10:27:43 2000.but i need only time like 10:27:43
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE MMM dd HH:mm:ss ZZZ yyyy"];
NSLog(#"Date is %#", dateTime);
// Convert to new Date Format
[dateFormatter setDateFormat:#"HH:mm:ss"];
newDate = [dateFormatter stringFromDate:dateTime];
NSLog(#" string Date is %#", newDate);
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init] ;
[dateFormatter1 setDateFormat:#"HH:mm:ss"];
//[dateFormatter1 setDateFormat:#"dd/mm/yyyy"];
NSDate *dateFromString = [dateFormatter1 dateFromString:newDate];
NSLog(#"date format date %#",dateFromString);

Answer 1

you need to convert dateFormat as per date is coming and after convert it as you want.
Try this below code..
NSString *dateTime = #"Thu Jan 25 10:38:11 2018";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE MMM dd HH:mm:ss yyyy"];
NSDate *dateFromString = [dateFormatter dateFromString:dateTime];
NSLog(#"Date is %#", dateTime);
// Convert to new Date Format
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSString *result = [dateFormatter stringFromDate:dateFromString];
NSLog(#"result %#",result);

Answer 2

Split the time in date components and use that components as a time.
Check below code.
NSString *aStrTime = #"10:27:43";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:aStrTime];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond) fromDate:date];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger sec = [components second];
NSLog(#"%d:%d:%d", hour, minute, sec);
Note: change aStrTime and dateFormatPattern according to your need.

Answer 3

You can try the following code:-
For e.g:- if you are getting the date in 10-02-2017 12:30:50 format
NSString *strDate = #"10-02-2017 12:30:50";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"dd-mm-yyyy HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:strDate];
NSLog(#"The Date is: %#", date);
// By this code you will get the date in NSDate form. Now you can change the format to get the time
[dateFormat setDateFormat:#"HH:mm:ss"];
NSString *strFinalTime = [dateFormatter stringFromDate:strDate];
NSLog(#"strFinalTime: %#",strFinalTime);