这篇文章主要为大家展示了“iOS如何自定义UIDatePicker日期选择器视图”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“iOS如何自定义UIDatePicker日期选择器视图”这篇文章吧。
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代码：
ViewController：
#import @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 ()@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
HWDatePicker：
#import @class HWDatePicker;@protocol HWDatePickerDelegate /** * 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 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
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