学步园

- (NSString *)formatterDurationToString:(double)duration
{
    int secs = (int)duration;
    int hour = secs/3600;
    int minute = (secs % 3600)/60;
    int sec = secs % 60;
    NSString *durationStr;
    if (hour>0)
    {
        durationStr = [NSString stringWithFormat:@"%d:%02d:%02d",hour,minute,sec];
    }
    else
    {
        durationStr = [NSString stringWithFormat:@"%02d:%02d",minute,sec];
    }
    return durationStr;
}