本篇IOS应用开发教程将为大家讲解IOS编程的知识点，看完这篇文章会让你对IOS编程的知识点有更加清晰的理解和运用。

   UIButton * nameButton = [UIButton buttonWithType:UIButtonTypeCustom];

    nameButton.frame = CGRectMake(0, 200, self.view.frame.size.width, 100);

    nameButton.backgroundColor = [UIColor orangeColor];

    [self.view addSubview:nameButton];

    NSCalendar *calendar = [NSCalendar currentCalendar];

    NSDate *starDate = [NSDate dateWithTimeIntervalSince1970:1513142700];//开始时间

    NSDate *endDate = [NSDate dateWithTimeIntervalSince1970:1513146300];//结束时间

    unsigned int unitFlags = NSCalendarUnitYear| NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond ;

    NSDateComponents *d = [calendar components:unitFlags fromDate:starDate toDate:endDate options:0];

    [nameButton setTitle:[NSString stringWithFormat:@"%ld小时%ld分%ld秒", (long)[d hour], (long)[d minute], (long)[d second]] forState:0];

希望这篇文章可以帮助到你。总之，同学们，你想要的职坐标IOS频道都能找到!