NSDate time converting from 12hr to 24 hr format

Question

hi i have problem while converting Date Formats... the date time is in the Format 12 hour Format like 12/9/2010 4:00:00 PM (Month/date/year Hour:Min:sec P

Answer 1

Use these functions,this will change the date string from 12 to 24 hr formate and 24 to 12hr formate.

-(NSString *)changeformate_string24hr:(NSString *)date
{

    NSDateFormatter* df = [[NSDateFormatter alloc]init];

    [df setTimeZone:[NSTimeZone systemTimeZone]];

    [df setDateFormat:@"MM/dd/yyyy hh:mm:ss a"];

    NSDate* wakeTime = [df dateFromString:date];

    [df setDateFormat:@"MM/dd/yyyy HH:mm:ss"];


    return [df stringFromDate:wakeTime];

}

-(NSString *)changeformate_string12hr:(NSString *)date
{

    NSDateFormatter* df = [[NSDateFormatter alloc]init];

    [df setTimeZone:[NSTimeZone systemTimeZone]];

    [df setDateFormat:@"MM/dd/yyyy HH:mm:ss"];
    NSDate* wakeTime = [df dateFromString:date];


    [df setDateFormat:@"MM/dd/yyyy hh:mm:ss a"];


    return [df stringFromDate:wakeTime];

}