Objective-c 手寫UIDatePicker

//程序員

//  ViewController.matom

//  手寫UIDatePickerspa

//.net

//  Created by 非凡 程序員 on 15/11/13.3d

//  Copyright (c) 2015 非凡 程序員. All rights reserved.orm

//事件


.h文件字符串

#import <UIKit/UIKit.h>get


@interface ViewController : UIViewControllerstring


@property(nonatomic,strong)UIDatePicker *datePicker;

@end


---------------------------------


.m文件



#import "ViewController.h"


@interface ViewController ()


@end


@implementation ViewController


- (void)viewDidLoad {

    [super viewDidLoad];

  //定義一個datePicker

    _datePicker = [ [ UIDatePicker alloc ] initWithFrame:CGRectMake (10, 10, 100, 100) ] ;

    //設置datePicker的樣式

    _datePicker.datePickerMode = UIDatePickerModeDateAndTime ;


    //設置datePicker的時間差

    _datePicker.minuteInterval = 6;

    //設置datePicker的最小時間爲當前時間

    _datePicker.minimumDate = [ NSDate date ] ;

    

    //datePicker添加事件

    [ _datePicker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged ] ;

    //將控件添加在頁面上

    [ self.view addSubview:_datePicker ] ;

}

//datePicker值發生改變會回調的自定義方法

- ( void ) dateChange : ( UIDatePicker * ) sender {

    NSDate  * date = _datePicker.date ; //獲取datePicker的時間

    NSLog ( @" %@ " , date )

    ;

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

}


@end



--------------------------------------------------------------------------------------------------------------

拖線


//

//  ViewController.m

//  UIDatePicker

//

//  Created by 非凡 程序員 on 15/11/13.

//  Copyright (c) 2015 非凡 程序員. All rights reserved.

//

.h文件

#import <UIKit/UIKit.h>


@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIDatePicker *datePicker;



@end


-----------------------------------

.m文件

#import "ViewController.h"


@interface ViewController ()


@end


@implementation ViewController


- (void)viewDidLoad {

    [super viewDidLoad];

    

//    UIDatePicker 是一個控制器類,他是UIControl的子類,專門用於接受日期、時間和持續時長的輸入。日期選取器的各列會按照指定的風格進行自動配置

  

//    UIDatePicker 依賴於 NSDate

    

    

    _datePicker.minuteInterval=6;

     //設置datePicker的樣式

    _datePicker.datePickerMode=UIDatePickerModeDate;

//    格式化一個字符串型的時間爲NSDate類型

    NSString *string=@"2012-12-22";

    NSDateFormatter *formatter=[[NSDateFormatter alloc]init];

    [formatter setDateFormat:@"yyyy-MM-dd"];

    NSDate *date=[formatter dateFromString:string];

//    設置datePicker的最小時間

    _datePicker.minimumDate=date;

     //datePicker添加事件

    [_datePicker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];

    

}

//datePicker值發生改變會回調的自定義方法

-(void)dateChange:(UIDatePicker *)sender{

    NSDate *date=_datePicker.date;

    NSLog(@"%@",date);

}


- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}


@end

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