Convert Seconds Integer To HH:MM, iPhone
I am struggling with this. I have a value in seconds that I want to display in a label in HH:MM format. I have searched the internet for ages and found some answers, but either not fully understood them, or they seem like an odd way of doing what I want. If someone could help me out on this one that would be great! Bear in mind that I am new to this games so this question may seem like a really basic one to the more experienced out there.
I was looking for the same thing that you are looking but couldn't find one. So I wrote one -
- (NSString *)timeFormatted:(int)totalSeconds
{
int seconds = totalSeconds % 60;
int minutes = (totalSeconds / 60) % 60;
int hours = totalSeconds / 3600;
return [NSString stringWithFormat:@"%02d:%02d:%02d",hours, minutes, seconds];
}
works perfectly in Swift as well:
func timeFormatted(totalSeconds: Int) -> String {
let seconds: Int = totalSeconds % 60
let minutes: Int = (totalSeconds / 60) % 60
let hours: Int = totalSeconds / 3600
return String(format: "%02d:%02d:%02d", hours, minutes, seconds)
}
In iOS 8.0 and higher versions it can also be done with NSDateComponentsFormatter
. I need to mention that it will format the string without first leading zero, for example '9:30', but not '09:30'. But if you like to use formatters, you can use this code:
-(NSString *)getTimeStringFromSeconds:(double)seconds
{
NSDateComponentsFormatter *dcFormatter = [[NSDateComponentsFormatter alloc] init];
dcFormatter.zeroFormattingBehavior = NSDateComponentsFormatterZeroFormattingBehaviorPad;
dcFormatter.allowedUnits = NSCalendarUnitHour | NSCalendarUnitMinute;
dcFormatter.unitsStyle = NSDateComponentsFormatterUnitsStylePositional;
return [dcFormatter stringFromTimeInterval:seconds];
}
This is how I do it:
-(NSString *)formatTimeFromSeconds:(int)numberOfSeconds
{
int seconds = numberOfSeconds % 60;
int minutes = (numberOfSeconds / 60) % 60;
int hours = numberOfSeconds / 3600;
//we have >=1 hour => example : 3h:25m
if (hours) {
return [NSString stringWithFormat:@"%dh:%02dm", hours, minutes];
}
//we have 0 hours and >=1 minutes => example : 3m:25s
if (minutes) {
return [NSString stringWithFormat:@"%dm:%02ds", minutes, seconds];
}
//we have only seconds example : 25s
return [NSString stringWithFormat:@"%ds", seconds];
}
For Swift:
func formatTimeInSec(totalSeconds: Int) -> String {
let seconds = totalSeconds % 60
let minutes = (totalSeconds / 60) % 60
let hours = totalSeconds / 3600
let strHours = hours > 9 ? String(hours) : "0" + String(hours)
let strMinutes = minutes > 9 ? String(minutes) : "0" + String(minutes)
let strSeconds = seconds > 9 ? String(seconds) : "0" + String(seconds)
if hours > 0 {
return "\(strHours):\(strMinutes):\(strSeconds)"
}
else {
return "\(strMinutes):\(strSeconds)"
}
}
While @Aks' answer for Swift works, I'm a little skeptic about hardcoding values in my code. @edukulele's answer is much more cleaner but it's in Objective-C. I translated it to Swift with a slight change. I normally write my formatters as lazy var
s.
private lazy var dateFormatter: NSDateComponentsFormatter = {
let formatter = NSDateComponentsFormatter()
formatter.zeroFormattingBehavior = .Pad
formatter.allowedUnits = [.Hour, .Minute, .Second]
formatter.unitsStyle = .Positional
return formatter
}()