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On my iPhone 6 and 6 plus, the date format @"YYYY-MM-dd'T'HH:mm:ss" does not work unless system date is set to 24 hours in the Settings.

NSDateFormatter * dateFormater = [[NSDateFormatter alloc]init];
[dateFormater setDateFormat:@"YYYY-MM-dd'T'HH:mm:ss"];
dateFormater.locale = [NSLocale currentLocale];

NSString *dateString = @"2017-06-12T22:20:04+05:30";
dateFormater.timeZone = [NSTimeZone localTimeZone];
NSDate * startDate = [dateFormater dateFromString:[dateString substringToIndex:19]];

I am getting nil as start date.

Glorfindel
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Debasish Chowdhury
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3 Answers3

0

Try this :

For 12 Hrs

[dateFormater setDateFormat:@"YYYY-MM-dd'T'hh:mm:ss"];

For 24 Hrs: 

[dateFormater setDateFormat:@"YYYY-MM-dd'T'HH:mm:ss"];
KKRocks
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0

Unless you specifically mention the local dateFormater.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]; or otherwise ,in iPhone 6 and 6 plus with iOS version 10.3.2 the conversion of NSString to NSDate will not be give nil value for NSDate. When different local is selected in phone settings.

NSDate * startDate = [dateFormater dateFromString:[dateString substringToIndex:19]];

Debasish Chowdhury
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0

Its not issue of any particular device. Your dateformater component is wrong.

hh -> This is used for 12 hours formate. HH -> This is used for 24 hours formate.

Here is brief description about all of them, so you can get idea:

a: AM/PM

A: 0~86399999 (Millisecond of Day)

c/cc: 1~7 (Day of Week)

ccc: Sun/Mon/Tue/Wed/Thu/Fri/Sat

cccc: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday

d: 1~31 (0 padded Day of Month)

D: 1~366 (0 padded Day of Year)

e: 1~7 (0 padded Day of Week)

E~EEE: Sun/Mon/Tue/Wed/Thu/Fri/Sat

EEEE: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday

F: 1~5 (0 padded Week of Month, first day of week = Monday)

g: Julian Day Number (number of days since 4713 BC January 1)

G~GGG: BC/AD (Era Designator Abbreviated)

GGGG: Before Christ/Anno Domini

h: 1~12 (0 padded Hour (12hr))

H: 0~23 (0 padded Hour (24hr))

k: 1~24 (0 padded Hour (24hr)

K: 0~11 (0 padded Hour (12hr))

L/LL: 1~12 (0 padded Month)

LLL: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec

LLLL: January/February/March/April/May/June/July/August/September/October/November/December

m: 0~59 (0 padded Minute)

M/MM: 1~12 (0 padded Month)

MMM: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec

MMMM: January/February/March/April/May/June/July/August/September/October/November/December

q/qq: 1~4 (0 padded Quarter)

qqq: Q1/Q2/Q3/Q4

qqqq: 1st quarter/2nd quarter/3rd quarter/4th quarter

Q/QQ: 1~4 (0 padded Quarter)

QQQ: Q1/Q2/Q3/Q4

QQQQ: 1st quarter/2nd quarter/3rd quarter/4th quarter

s: 0~59 (0 padded Second)

S: (rounded Sub-Second)

u: (0 padded Year)

v~vvv: (General GMT Timezone Abbreviation)

vvvv: (General GMT Timezone Name)

w: 1~53 (0 padded Week of Year, 1st day of week = Sunday, NB: 1st week of year starts from the last Sunday of last year)

W: 1~5 (0 padded Week of Month, 1st day of week = Sunday)

y/yyyy: (Full Year)

yy/yyy: (2 Digits Year)

Y/YYYY: (Full Year, starting from the Sunday of the 1st week of year)

YY/YYY: (2 Digits Year, starting from the Sunday of the 1st week of year)

z~zzz: (Specific GMT Timezone Abbreviation)

zzzz: (Specific GMT Timezone Name)

Z: +0000 (RFC 822 Timezone)

Nirmalsinh Rathod
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  • I am trying to covert the date string to NSDate. this is my date string @"2017-06-12T22:20:04+05:30"; Now if I set the date formatter local as [NSLocale currentLocale]; It is unable to render the NSDate object for the date formatter [dateFormater setDateFormat:@"YYYY-MM-dd'T'HH:mm:ss"]; This issue occurs only in iPhone 6 and 6 plus when from settings 24-hours Time is switched off. This issue is not happening in 6s or 7. – Debasish Chowdhury Jul 11 '17 at 13:00