UIDatePickerView的完美使用 日期选取器

在ios的开发中，日期选择器是个用的还是蛮多的一个部分，填写用户的出生日期，填写自己的计划，填写自己的约会安排，都是会有用到日期选择的地方的。

我认为这里面的关键点是设置日期的格式（datePickerMode），还有选择日期后去如何处理(这里我没有做)，

浏览一下代码吧

UIDatePickerDemoViewController.m

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// //  UIDatePickerDemoViewController.m //  UIDatePickerDemo // //  Created by david on 13-8-16. //  Copyright (c) 2013年 WalkerFree. All rights reserved. //   #import "UIDatePickerDemoViewController.h"   @interface UIDatePickerDemoViewController ()   @end   @implementation UIDatePickerDemoViewController   - (void)viewDidLoad {     [super viewDidLoad];                 self.navigationController.navigationBar.tintColor = COOKBOOK_PURPLE_COLOR;     self.navigationItem.rightBarButtonItem = BARBUTTON(@"操作", @selector(action:));           UISegmentedControl *seg= [[UISegmentedControl alloc] initWithItems:[@"Time Date DC Count" componentsSeparatedByString:@" "]];     seg.segmentedControlStyle = UISegmentedControlStyleBar;     seg.selectedSegmentIndex = 0;     self.navigationItem.titleView = seg; }   - (void)didReceiveMemoryWarning {     [super didReceiveMemoryWarning];     // Dispose of any resources that can be recreated. }   #pragma mark - method of UIActionSheet -(void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{     UIDatePicker *datePicker = (UIDatePicker *)[actionSheet viewWithTag:101];     NSDateFormatter *formattor = [[NSDateFormatter alloc] init];           switch ([(UISegmentedControl *) self.navigationItem.titleView selectedSegmentIndex]) {         case 0:             formattor.dateFormat = @"h:mm a";             break;         case 1:             formattor.dateFormat = @"dd MMMM yy";             break;         case 2:             formattor.dateFormat = @"MM/dd/YY h:mm a";             break;         case 3:             formattor.dateFormat = @"HH:mm";             break;         default:             break;     }     NSString *timestamp = [formattor stringFromDate:datePicker.date];     [(UILabel *)[self.view viewWithTag:103] setText:timestamp];       }   #pragma mark - method of self -(void) action:(id)sender{     NSString *title = UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation) ? @"\n\n\n\n\n\n\n\n\n" : @"\n\n\n\n\n\n\n\n\n\n\n\n";     UIActionSheet *actionsheet = [[UIActionSheet alloc] initWithTitle:title                                                              delegate:self                                                     cancelButtonTitle:nil                                                destructiveButtonTitle:nil                                                     otherButtonTitles:@"请选择日期", nil];     [actionsheet showInView:self.view];       UIDatePicker *datepicker = [[UIDatePicker alloc] init];     datepicker.tag = 101;     datepicker.datePickerMode = [(UISegmentedControl *)self.navigationItem.titleView selectedSegmentIndex];       [actionsheet addSubview:datepicker]; } @end

UIDatePickerDemoViewController.h

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// //  UIDatePickerDemoViewController.h //  UIDatePickerDemo // //  Created by david on 13-8-16. //  Copyright (c) 2013年 WalkerFree. All rights reserved. //   #import <UIKit/UIKit.h>   #define COOKBOOK_PURPLE_COLOR [UIColor colorWithRed:0.20392f green:0.19607f blue:0.61176f alpha:1.0f] #define BARBUTTON(TITLE, SELECTOR) [[UIBarButtonItem alloc] initWithTitle:TITLE style:UIBarButtonItemStylePlain target:self action:SELECTOR]   @interface UIDatePickerDemoViewController : UIViewController<UIActionSheetDelegate>   @end

效果图：

【原文：http://www.gowhich.com/blog/337】