iOS开发 选择日期的view 一（UIDatePicker的封装）

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之前写了个基于类簇的自定义选择日期的view的封装，现在看看，感觉代码挺操蛋的，还是抽出来，只显示UIDatePicker的封装吧

//
//  XGChoseDateView.h
//  XGDevelopDemo
//
//  Created by 小广 on 15/8/18.
//  Copyright © 2015年 小广. All rights reserved.
//  选择日期的view#import <UIKit/UIKit.h>typedef NS_ENUM(NSInteger, DateType) {DateTypeNormal,       // 默认时间选择(月日时分)DateTypeModeDate      // 时间选择(只有年月日)
};typedef void (^ConfirmDateBlock)(NSDate  *date);@interface XGChoseDateView : UIView- (instancetype)initWithFrame:(CGRect)framedatePickerMode:(UIDatePickerMode)datePickerModelastDate:(NSDate *)lastDate;/***  View显示*/
- (void)showView;/***  确认所选时间**  @param block 传出Date*/
- (void)confirmDate:(ConfirmDateBlock)block;@end

.m里面的 代码 有点多，也懒得优化，都是用的纯代码

//
//  XGChoseDateView.m
//  XGDevelopDemo
//
//  Created by 小广 on 15/8/18.
//  Copyright © 2015年 小广. All rights reserved.
//  选择日期的view#import "XGChoseDateView.h"#define XGButtonWidth         60.0
#define TopBarHeight          44.0
#define PickerHeight          216.0
#define XGScreenBounds [UIScreen mainScreen].bounds
#define XGScreenWidth XGScreenBounds.size.width
#define XGScreenHeight XGScreenBounds.size.height
#define XGViewHeight CGRectGetHeight(XGScreenBounds) - 44 - 20 // 去掉导航条的高度@interface XGChoseDateView ()@property (nonatomic, strong) UIDatePicker *datePicker;
@property (nonatomic, strong) UIView       *bgView;        // 按钮背景View
@property (nonatomic, strong) UIButton     *cancelButton;  // 取消按钮
@property (nonatomic, strong) UIButton     *confirmButton; // 确定按钮
@property (nonatomic, strong) NSDate       *currentDate;   // 当前显示时间
@property (nonatomic, strong) NSDate       *lastDate;      // 上次选择时间
@property (nonatomic, assign) UIDatePickerMode datePickerMode; // datePicker显示形式
@property (nonatomic, copy) ConfirmDateBlock block;@end@implementation XGChoseDateView#pragma mark - 对外方法
- (instancetype)initWithFrame:(CGRect)framedatePickerMode:(UIDatePickerMode)datePickerModelastDate:(NSDate *)lastDate {self = [super initWithFrame:frame];if (self) {_datePickerMode = datePickerMode;_lastDate = lastDate;[self initSubViews];}return self;
}// 显示view(此方法是加载在window上 ,遮住导航条)
- (void)showView {UIWindow * window = [UIApplication sharedApplication].windows[0];[window addSubview:self];
}// 传值到外面
- (void)confirmDate:(ConfirmDateBlock)block {self.block = block;
}#pragma mark - 自定义方法
- (void)initSubViews {self.backgroundColor = [UIColor clearColor];self.alpha = 0;[self addCoverView];[self addBGView];self.datePicker.datePickerMode = self.datePickerMode;self.datePicker.date = self.lastDate ? self.lastDate : [NSDate date];self.currentDate = self.datePicker.date;
}// 添加蒙板
- (void)addCoverView {UIView *coverView = [[UIView alloc] initWithFrame:self.frame];coverView.alpha = 0.3;coverView.backgroundColor = [UIColor blackColor];[self addSubview:coverView];UITapGestureRecognizer  *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(coverViewDidTouch:)];tapGesture.numberOfTapsRequired = 1;[coverView addGestureRecognizer:tapGesture];
}// 大view添加子view(为了做动画)
- (void)addBGView {[self addSubview:self.bgView];[self addButtons];[self.bgView addSubview:self.datePicker];[self.datePicker addTarget:self action:@selector(datePickerValueChange:) forControlEvents:UIControlEventValueChanged];[UIView animateWithDuration:0.25 animations:^{self.alpha = 1.0;CGFloat posY = XGScreenHeight - (PickerHeight + TopBarHeight);self.bgView.frame = CGRectMake(0.0, posY, XGScreenWidth, (PickerHeight + TopBarHeight));} completion:^(BOOL finished) {//}];
}// 添加按钮
- (void)addButtons {CGFloat posY = 0.0;UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0.0, posY, XGScreenWidth, TopBarHeight)];view.backgroundColor = UIColorFrom16RGB(0x334455);[self.bgView addSubview:view];// 取消按钮self.cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];self.cancelButton.frame = CGRectMake(0.0, posY, XGButtonWidth, TopBarHeight);self.cancelButton.tag = 0;[self.cancelButton setBackgroundColor:[UIColor clearColor]];[self.cancelButton setTitle:@"取消" forState:UIControlStateNormal];[self.cancelButton addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];[self.bgView addSubview:self.cancelButton];// 确定按钮CGFloat posX = XGScreenWidth - XGButtonWidth;self.confirmButton = [UIButton buttonWithType:UIButtonTypeCustom];self.confirmButton.frame = CGRectMake(posX, posY, XGButtonWidth, TopBarHeight);self.confirmButton.tag = 1;[self.confirmButton setBackgroundColor:[UIColor clearColor]];[self.confirmButton setTitle:@"确定" forState:UIControlStateNormal];[self.confirmButton addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];[self.bgView addSubview:self.confirmButton];}// 按钮点击事件
- (void)buttonClick:(UIButton *)sender {if (sender.tag == 1) {if (!self.currentDate) {self.currentDate = [NSDate date];}if (self.block) {self.block(self.currentDate);}}[self dismissContactView];
}// 蒙板手势事件
- (void)coverViewDidTouch:(UITapGestureRecognizer *)sender {if (!self.currentDate) {self.currentDate = [NSDate date];}if (self.block) {self.block(self.currentDate);}[self dismissContactView];
}// 移除view
- (void)dismissContactView {kWeakSelf[UIView animateWithDuration:0.25 animations:^{weakSelf.bgView.frame = CGRectMake(0.0, XGScreenHeight, XGScreenWidth, 0.0);weakSelf.alpha = 0;} completion:^(BOOL finished) {[weakSelf removeFromSuperview];}];
}#pragma mark - 懒加载
// PickerView和按钮的父视图view(为了做动画)
- (UIView *)bgView {if (!_bgView) {_bgView = [[UIView alloc] initWithFrame:CGRectMake(0.0, XGScreenHeight, XGScreenWidth, (PickerHeight + TopBarHeight))];_bgView.backgroundColor = [UIColor clearColor];_bgView.clipsToBounds = YES;}return _bgView;
}- (UIDatePicker *)datePicker {if (!_datePicker) {_datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0, TopBarHeight, XGScreenWidth, 216.0)];_datePicker.backgroundColor = [UIColor whiteColor];}return _datePicker;
}#pragma mark - 代理方法
// UIDatePicker绑定方法
- (void)datePickerValueChange:(UIDatePicker *)sender {self.currentDate = sender.date;
}@end

用法：

XGChoseDateView *choseView = [[XGChoseDateView alloc] initWithFrame:XGScreenBoundsdatePickerMode:UIDatePickerModeDatelastDate:self.choseDate];[choseView showView];__weak __typeof(self)weakSelf = self;[choseView confirmDate:^(NSDate *date) {weakSelf.choseDate = date;NSLog(@"当前选择的时间是==%@==",date);}];

其中的choseDate 也就是记录上次所选择的时间，就酱，还有很多待优化，以后有时间了再说...

效果：

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