iOS自定义日期选择器

前言

封装了一个日期选择器，解决两个问题：
1、点击textfield，键盘弹出和日期选择器弹出的逻辑处理；
2、同一个界面需要多次用到日期选择器时，判断点击的textfield;

一、封装日期选择器类ycdatepickerview

1、新建一个类，基于uiview，取名ycdatepickerview。

2、ycdatepickerview类中.h文件代码如下：

typedef void (^mybasicblock)(id result);

#import <uikit/uikit.h>

@interface ycdatepickerview : uiview

@property (nonatomic, strong) uibutton *btnconfirm;
@property (nonatomic, strong) uibutton *btncancel;
@property (nonatomic, strong) uidatepicker *datepicker;
@property (nonatomic, copy) mybasicblock selectblock;

+ (ycdatepickerview *)datepickerviewwithmode:(uidatepickermode) datepickermode bolck:(mybasicblock)block;


@end

3、ycdatepickerview类中.m文件代码如下：

#define screen_width   [[uiscreen mainscreen] bounds].size.width
#define screen_height   [[uiscreen mainscreen] bounds].size.height

#define ktopbarviewheight    40
#define kbutton_width      40
#define kbutton_height     40
#define kdatepicker_height   256


#import "ycdatepickerview.h"

@implementation ycdatepickerview

- (id)initwithframe:(cgrect)frame
{
  self = [super initwithframe:frame];
  if (self) {

    uiview *topbarview = [[uiview alloc] initwithframe:cgrectmake(0, 0, self.frame.size.width, ktopbarviewheight)];
    topbarview.backgroundcolor = [uicolor orangecolor];
    [self addsubview:topbarview];

    _btnconfirm = [[uibutton alloc] initwithframe:cgrectmake(self.frame.size.width-kbutton_width-10, 0, kbutton_width, kbutton_height)];
    [_btnconfirm addtarget:self action:@selector(btnconfirm:) forcontrolevents:uicontroleventtouchupinside];
    [_btnconfirm settitle:@"确定" forstate:uicontrolstatenormal];
    [topbarview addsubview:_btnconfirm];

    _btncancel = [[uibutton alloc] initwithframe:cgrectmake(10, 0, kbutton_width, kbutton_height)];
    [_btncancel addtarget:self action:@selector(btncancel:) forcontrolevents:uicontroleventtouchupinside];
    [_btncancel settitle:@"取消" forstate:uicontrolstatenormal];
    [topbarview addsubview:_btncancel];

    _datepicker = [[uidatepicker alloc] initwithframe:cgrectmake(0, cgrectgetmaxy(topbarview.frame), self.frame.size.width, self.frame.size.height-ktopbarviewheight)];
    _datepicker.backgroundcolor = [uicolor whitecolor];
    [self addsubview:_datepicker];

  }
  return self;
}

- (void)btnconfirm:(id)sender
{
  if (self.selectblock) {
    self.selectblock(self.datepicker.date);
  }
}

- (void)btncancel:(id)sender
{
  if (self.selectblock) {
    self.selectblock(nil);
  }
}

+ (ycdatepickerview *)datepickerviewwithmode:(uidatepickermode) datepickermode bolck:(mybasicblock)block
{
  ycdatepickerview *picker = [[ycdatepickerview alloc] initwithframe:cgrectmake(0, 0, screen_width, kdatepicker_height)];
  picker.datepicker.datepickermode = datepickermode;
  picker.selectblock = block;
  return picker;
}

@end

二、ycdatepickerview的使用

1、在viewcontroller中导入头文件

#import "ycdatepickerview.h"

2、在viewcontroller.m中添加如下代码

#define screen_width   [[uiscreen mainscreen] bounds].size.width
#define screen_height   [[uiscreen mainscreen] bounds].size.height


#import "viewcontroller.h"
#import "ycdatepickerview.h"

@interface viewcontroller ()

@property (retain, nonatomic) ycdatepickerview *datepicker;

@end

@implementation viewcontroller

- (void)viewdidload {
  [super viewdidload];


  uitextfield *begin = [[uitextfield alloc] initwithframe:cgrectmake(10, 70, screen_width-20, 30)];
  begin.placeholder = @"请输入开始时间";
  begin.borderstyle = uitextborderstyleroundedrect;
  [self.view addsubview:begin];

  __weak viewcontroller *weakself = self;
  begin.inputview = [ycdatepickerview datepickerviewwithmode:uidatepickermodedate
                             bolck:^(nsdate *result) {
                               if (result) {
                                 begin.text = [weakself datetostring:result];
                               }
                               [begin resignfirstresponder];
                             }];


  uitextfield *end = [[uitextfield alloc] initwithframe:cgrectmake(10, 120, screen_width-20, 30)];
  end.placeholder = @"请输入结束时间";
  end.borderstyle = uitextborderstyleroundedrect;
  [self.view addsubview:end];

  end.inputview = [ycdatepickerview datepickerviewwithmode:uidatepickermodedate
                                   bolck:^(nsdate *result) {
                                     if (result) {
                                       end.text = [weakself datetostring:result];
                                     }
                                     [end resignfirstresponder];
                                   }];

}

//日期转为字符串
- (nsstring *)datetostring:(nsdate *)date
{
  nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
  [dateformatter setdateformat:@"yyyy-mm-dd hh:mm:ss"];
  nsstring *strdate = [dateformatter stringfromdate:date];
  return strdate;
}

@end

三、效果图

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。