iOS自定义UIDatePicker日期选择器视图

#import <UIKit/UIKit.h>
 
@interface ViewController : UIViewController
 
@end
 
 
#import "ViewController.h"
#import "HWDatePicker.h"
 
#define mainW [UIScreen mainScreen].bounds.size.width
#define mainH [UIScreen mainScreen].bounds.size.height
 
@interface ViewController ()<UITextFieldDelegate, HWDatePickerDelegate>
 
@property (nonatomic, weak) HWDatePicker *datePicker;
@property (nonatomic, strong) UITextField *dateTextField;
 
@end
 
@implementation ViewController
 
- (void)viewDidLoad {
 [super viewDidLoad];
 
 self.view.backgroundColor = [UIColor blackColor];
 
 //创建控件
 [self creatControl];
}
 
- (void)creatControl
{
 //textField
 _dateTextField = [[UITextField alloc] initWithFrame:CGRectMake(mainW * 0.05, mainW * 0.72, mainW * 0.9, mainW * 0.12)];
 _dateTextField.background = [UIImage imageNamed:@"textFieldBj"];
 _dateTextField.textAlignment = NSTextAlignmentRight;
 _dateTextField.placeholder = @"请设置日期";
 _dateTextField.delegate = self;
 UILabel *lab2 = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, mainW * 0.4, mainW * 0.12)];
 lab2.textAlignment = NSTextAlignmentLeft;
 lab2.text = @" 日期";
 lab2.textColor = [UIColor grayColor];
 _dateTextField.leftView = lab2;
 _dateTextField.leftViewMode = UITextFieldViewModeAlways;
 UILabel *lab22 = [[UILabel alloc] initWithFrame:CGRectMake(mainW * 0.12 - 15, 0, 15, mainW * 0.12)];
 _dateTextField.rightView = lab22;
 _dateTextField.rightViewMode = UITextFieldViewModeAlways;
 [self.view addSubview:_dateTextField];
 
 //日期选择器
 HWDatePicker *datePicker = [[HWDatePicker alloc] initWithFrame:CGRectMake(mainW * 0.05, mainH, mainW * 0.9, mainW * 0.5)];
 datePicker.delegate = self;
 [self.view addSubview:datePicker];
 self.datePicker = datePicker;
}
 
#pragma mark - UITextFieldDelegate
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
 if (_datePicker.frame.origin.y != mainH && _datePicker != nil) {
 [_datePicker dismiss];
 return NO;
 
 }else if (textField == _dateTextField) {
 [_datePicker show];
 return NO;
 }
 
 return YES;
}
 
#pragma mark - HWDatePickerDelegate
- (void)datePickerView:(HWDatePicker *)datePickerView didClickSureBtnWithSelectDate:(NSString *)date
{
 _dateTextField.text = date;
}
 
@end

#import <UIKit/UIKit.h>
 
@class HWDatePicker;
 
@protocol HWDatePickerDelegate <NSObject>
 
/**
 * HWDatePicker确定按钮点击代理事件
 *
 * @param datePickerView HWDatePicker
 * @param date  选中的日期
 */
- (void)datePickerView:(HWDatePicker *)datePickerView didClickSureBtnWithSelectDate:(NSString *)date;
 
@end
 
@interface HWDatePicker : UIView
 
@property (nonatomic, weak) id<HWDatePickerDelegate> delegate;
 
- (void)show;
- (void)dismiss;
 
@end
 
 
#import "HWDatePicker.h"
 
//获得屏幕的宽高
#define mainW [UIScreen mainScreen].bounds.size.width
#define mainH [UIScreen mainScreen].bounds.size.height
 
@interface HWDatePicker ()
 
@property (nonatomic, strong) UIDatePicker *datePicker;
 
@end
 
@implementation HWDatePicker
 
- (id)initWithFrame:(CGRect)frame
{
 if (self = [super initWithFrame:frame]) {
 //背景框
 UIImageView *back = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height)];
 back.image = [UIImage imageNamed:@"datePickerBj"];
 [self addSubview:back];
 
 //日期选择器
 _datePicker = [[UIDatePicker alloc] init];
 _datePicker.frame = CGRectMake(10, 10, self.frame.size.width - 20, 120);
 _datePicker.backgroundColor = [UIColor clearColor];
 [_datePicker setDatePickerMode:UIDatePickerModeDate];
 NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];
 _datePicker.locale = locale;
 NSDateFormatter *formatter_minDate = [[NSDateFormatter alloc] init];
 [formatter_minDate setDateFormat:@"yyyy-MM-dd"];
 NSDate *minDate = [formatter_minDate dateFromString:@"2008-01-01"];
 formatter_minDate = nil;
 [_datePicker setMinimumDate:minDate];
 [self addSubview:_datePicker];
 
 //确定按钮
 UIButton *sureBtn = [[UIButton alloc] initWithFrame:CGRectMake((self.frame.size.width - mainW * 0.36) * 0.5, self.frame.size.height * 0.747, mainW * 0.36, mainW * 0.11)];
 [sureBtn setImage:[UIImage imageNamed:@"sureBtn"] forState:UIControlStateNormal];
 [sureBtn addTarget:self action:@selector(sureBtnOnClick) forControlEvents:UIControlEventTouchUpInside];
 [self addSubview:sureBtn];
 }
 
 return self;
}
 
- (void)sureBtnOnClick
{
 [self dismiss];
 
 if (_delegate && [_delegate respondsToSelector:@selector(datePickerView:didClickSureBtnWithSelectDate:)]) {
 [_delegate datePickerView:self didClickSureBtnWithSelectDate:[self getDateString]];
 }
}
 
- (NSString *)getDateString
{
 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
 [dateFormatter setDateFormat:@"yyyy-MM-dd"];
 NSString *date = [dateFormatter stringFromDate:[self.datePicker date]];
 
 return date;
}
 
- (void)show
{
 [UIView animateWithDuration:0.3 animations:^{
 self.frame = CGRectMake(mainW * 0.05, mainH - mainW * 0.75, mainW * 0.9, mainW * 0.5);
 }];
}
 
- (void)dismiss
{
 [UIView animateWithDuration:0.3 animations:^{
 self.frame = CGRectMake(mainW * 0.05, mainH, mainW * 0.9, mainW * 0.5);
 }];
}
 
@end