Question

i have a string value 20.30(hours) i need it to convert 08:30:00 .
Can any one know this please help me.

NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    dateFormat.dateFormat = @"hh:mm:ss";
    [dateFormat setTimeZone:[NSTimeZone systemTimeZone]];

    double time = 20.30;
    double timeInSeconds = time*24*60*60; // 0.27392 * 24 = 6.57408 hours *60 for minutes * 60 for seconds

    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:timeInSeconds]; //Creates a date: 1 January 2001 6:34:27 AM, GMT

    NSLog(@"Time: %@", [dateFormat stringFromDate:date]);
    [dateFormat release];

The above code does not working for me.

Answer 1

Replace your Code with this:

//The Format which you want as output
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
dateFormat.dateFormat = @"hh:mm:ss";
[dateFormat setTimeZone:[NSTimeZone systemTimeZone]];

//The Format in which your dateTime currently is
NSDateFormatter *dateFormat1 = [[NSDateFormatter alloc] init];
dateFormat1.dateFormat = @"HH.mm";
[dateFormat1 setTimeZone:[NSTimeZone systemTimeZone]];

double time = 20.30;

NSString *timeStr = [NSString stringWithFormat:@"%.2f",time];
NSDate *dates = [dateFormat1 dateFromString:timeStr];
NSLog(@"Time: %@", [dateFormat stringFromDate:dates]);