Date time Conversion in IOS

Question

I know this will be a silly question, but I tried everything and still couldn't achieve what I wanted to do.

This is my question:

I want to check two time values and a date, I have string which is having time like this "05.30 AM". I want to convert it into time format [it is better if i can convert exactly the way it is now]. I know there is a way which can compare two time values using:

NSComparisonResult result = [date1 compare:date2];.

I have followed below code to convert my string value to the time format but it is only returns null.

Please guide me for this issue:

NSString* tim = @"11:12 AM";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateStyle:NSDateFormatterShortStyle];

NSDate *formatedTime= [formatter dateFromString:tim];
NSLog(@"TIME : %@",formatedTime);

hi darsan first of all you have to convert tim to date format — kamalesh kumar yadav, Mar 18 '14 at 07:22
Refer- http://stackoverflow.com/questions/18298010/ios-converting-time-and-date-to-user-time-zone — Suhas Gosavi, Mar 18 '14 at 07:25
yeah that is what i want to do in the first place..for that im using above code..but it is returns null — Darshana, Mar 18 '14 at 07:25

score 1 · Accepted Answer · answered Mar 18 '14 at 07:30

1

For this particular case (with tim formatted the way you have it) you just missing one line: [formatter setDateStyle:NSDateFormatterNoStyle]; this will tell formatter not to look for date in your string.

NSString* tim = @"11:12 AM";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setTimeStyle:NSDateFormatterShortStyle];
[formatter setDateStyle:NSDateFormatterNoStyle];

NSDate *formatedTime= [formatter dateFromString:tim];
NSLog(@"TIME : %@",formatedTime);

answered Mar 18 '14 at 07:30

dariaa

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i tried your answer sir.. but still i get value like this.2000-01-01 05:12:00 +0000 – Darshana Mar 18 '14 at 07:42
if formatter will not look for the date.. then why i still get an date for my out put..and why my time is incorrect? i cant understand sir – Darshana Mar 18 '14 at 07:43

score 0 · Answer 2 · answered Mar 18 '14 at 07:30

0

You need set the format.

[formatter setDateFormat:@"hh:mm a"];

answered Mar 18 '14 at 07:30

Tarek Hallak

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thank you.. now i got some value.. but the time is wrong...i pass 11:12 AM.. but it returns 2000-01-01 05:12:00 +0000.. how can i fix this – Darshana Mar 18 '14 at 07:34
1

I think this is because the date doesnt hold time zone, try to set it. `[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"GMT+0:00"]];` – Tarek Hallak Mar 18 '14 at 07:46
you were right sir..now i can get output like this....2000-01-01 11:12:00 +0000.. but still i have a problem..how can we check this is AM or PM...? – Darshana Mar 18 '14 at 07:50
1

You can control this when printing the date, i think it is 24 hours date, try to set another formatter for printing the date, [outputFormatter setDateFormat:@"MM/dd/yyyy hh:mm a"];. – Tarek Hallak Mar 18 '14 at 07:54

score 0 · Answer 3 · answered Mar 18 '14 at 07:32

NSString* tim = @"11:12 AM";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"HH:mm a"];

NSDate *formatedTime= [formatter dateFromString:tim];
NSLog(@"TIME : %@",formatedTime);

But you will receive

TIME : 1999-12-31 23:12:00 +0000

since year is unknown.

score 0 · Answer 4 · answered Mar 18 '14 at 07:40

0

First you need to format your String like this

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"EEE, dd MMM yyyy HH:mm:ss ZZZ";
[formatter dateFromString:@"Fri, 25 Jan 2014 5:30:22 +0000"];

answered Mar 18 '14 at 07:40

Chathurka

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Date time Conversion in IOS

4 Answers4