Date picker 控件简介

     1、datePicker

     2、效果图：

   3、表示层结构

   4、源码

import UIKit

class ViewController: UIViewController
{
@IBOutlet weak var datePicker: UIDatePicker!
@IBOutlet weak var lbl_currentDate: UILabel!

override func viewDidLoad()
{
super.viewDidLoad();

lbl_currentDate.adjustsFontSizeToFitWidth = true;

}

/// datePicker事件
@IBAction func OnChangeDate(sender: AnyObject)
{
let date = datePicker.date;
let dateFormat = NSDateFormatter();

/// 日期格式
dateFormat.dateFormat = "YYYY年MM月dd日 HH:MM";

/// 显示当前日期
lbl_currentDate.text = "日期:" + String(dateFormat.stringFromDate(date));
}

override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}