How to convert NSString to NSDate in IOS?

Question

I am building an application where I need to convert The NSString to NSDate. I have googled and found a lot links of SOF mentioned below -

1. https://stackoverflow.com/questions/3917250/converting-nsstring-to-nsdate-and- back-again

2. Convert NSString to NSDate

3. Converting can NSString to NSDate format in objective C

I had used the answer given there but the problem I still facing is explain below step by step.

1. I had taken NSString *StringDate = @"01:00:00"; // I have declared time in the NSString variable.

2. I used the conversion method that mentioned in above link and stored the converted value to the NSDate variable.

3. When I am NSLog the NSDate variable. I am get "19:30:00" in my logcat. While the expected result should be "01:00:00".

Here is one of the code I am using

NSString *dateString = @"01:00:00";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// this is imporant - we set our input date format to match our input string
// if format doesn't match you'll get nil from your string, so be careful
[dateFormatter setDateFormat:@"hh:mm:ss"];
NSDate *dateFromString = [[NSDate alloc] init];
// voila!
dateFromString = [dateFormatter dateFromString:dateString];

Answer 1

This is likely the correct date, but printed in a different timezone. I posted a longer explanation here:

Unexpected value from NSDate

BTW: In

NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];

[[NSDate alloc] init] is completely meaningless, because you assign an instance of NSDate in the very next line.

Answer 2

 -(NSString *)geTimeFromString:(NSString *)string
    {
        NSString * dateString = [NSString stringWithFormat: @"%@",string];
        NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
        [dateFormatter setDateFormat:@"hh:mm:ss"];
        NSDate* myDate = [dateFormatter dateFromString:dateString];
        [dateFormatter setDateFormat:@"hh:mm a"];
        [dateFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"]];
        NSString *stringFromTime = [dateFormatter stringFromDate:myDate];
        return stringFromTime;
    }

Try this

Answer 3

Try this method to convert NSString to NSDate :-

- (NSDate*) convertStringToDate
{
    NSString* dateStr = @"20/05/2015";
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"dd/MM/yyyy"];
    NSDate *date = [dateFormat dateFromString:dateStr];
    return date;
}