Question

I have an application in which i need to show a label in the tableview as Xseconds ago and xminutes&yseconds ago,X hrs ago like that.i am doing like this `

NSString *todaysdateString=[dict objectForKey:@"sendingtime"];

NSString *time = todaysdateString;
NSString*todaysdateString1=[NSString stringWithString: @" "];

NSDate *date1;
NSDate *date2;
//{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"HH:mm:ss"];
date1 = [formatter dateFromString:time];
date2 = [formatter dateFromString:[formatter stringFromDate:[NSDate date]]];
[formatter release];
//}
NSTimeInterval interval = [date1 timeIntervalSinceDate: date2];
float seconds = interval;
float hour = interval / 3600;
float minute =(interval - hour*3600) / 60;
NSLog(@"%02.0f,%02.0f,%02.0f",hour, minute, seconds);

`But this wont giving me the desired answers,I am getting like -0,00,-297 that is utterly wrong.Can anybody point me in where i am going wrong..

Answer 1

As your seconds is in negative, you should swap your date here

NSTimeInterval interval = [date1 timeIntervalSinceDate: date2];

to :

NSTimeInterval interval = [date2 timeIntervalSinceDate: date1];

And can do as :

NSInteger intervalInt=interval;

NSInteger seconds = intervalInt % 60;
NSInteger minutes = (intervalInt / 60) % 60;
NSInteger hours = intervalInt / (60 * 60);
NSString *result = [NSString stringWithFormat:@"%02ld:%02ld:%02ld", hours, minutes, seconds];