详解iOS时间选择框

#import <UIKit/UIKit.h>@class ITTPickView;@protocol ITTPickViewDelegate <NSObject>@optional-(void)toobarDonBtnHaveClick:(ITTPickView *)pickViewresultString:(NSString *)resultString;@end@interface ITTPickView : UIView@property(nonatomic,weak) id<ITTPickViewDelegate> delegate;//委托/*** 通过时间创建一个DatePicker** @param date 默认选中时间* @param isHaveNavControler是否在NavControler之内** @return 带有toolbar的datePicker*/-(instancetype)initDatePickWithDate:(NSDate *)defaulDatedatePickerMode:(UIDatePickerMode)datePickerModeisHaveNavControler:(BOOL)isHaveNavControler;/*** 从窗口移除本控件*/-(void)removeView;/*** 在窗口显示本控件*/-(void)showView;@end

pickView resultString:(NSString *)resultString（因为是可选的委托事件，实现了才会执行）;获得选择的时间字符串。#import "ITTPickView.h"#define ITTToobarHeight 40@interface ITTPickView ()@property (nonatomic,assign) NSDate *defaulDate;//默认时间@property (nonatomic,strong) UIDatePicker *datePicker;//datePicker控件@property (nonatomic,assign) NSInteger pickeviewHeight;//pickerView的高度@property (nonatomic,strong) UIToolbar *toolbar;//toolBar控件@property (nonatomic,copy) NSString *resultString;//返回的时间字符串@property (nonatomic,assign) NSInteger selfOriginy;//当前view的frame.origin.y@property (nonatomic,assign) NSInteger selfViewInitH;//初始状态view的frame.origin.y@end@implementation ITTPickView//初始化ITTPickView，- (instancetype)initDatePickWithDate:(NSDate *)defaulDate datePickerMode:(UIDatePickerMode)datePickerMode isHaveNavControler:(BOOL)isHaveNavControler {self = [super init];if (self) {self.defaulDate = defaulDate;[self setUpDatePickerWithdatePickerMode:datePickerMode];[self setFrameWith:isHaveNavControler];[self setUpToolBar];}return self;}//设定ITTPickView的frame大小-(void)setFrameWith:(BOOL)isHaveNavControler {CGFloat toolViewX = 0;CGFloat toolViewH = self.pickeviewHeight + ITTToobarHeight;CGFloat toolViewY;if (isHaveNavControler) {toolViewY = [UIScreen mainScreen].bounds.size.height - toolViewH - 50;}else {toolViewY = [UIScreen mainScreen].bounds.size.height - toolViewH;}CGFloat toolViewW = [UIScreen mainScreen].bounds.size.width;CGFloat toolViewInitH = [UIScreen mainScreen].bounds.size.height;self.selfViewInitH = toolViewInitH;//初始状态view的frame.origin.yself.selfOriginy = toolViewY;//当前view的frame.origin.yself.frame = CGRectMake(toolViewX, toolViewInitH, toolViewW, toolViewH);}//设定datePicker控件的样式以及frame大小，并作为view的子视图-(void)setUpDatePickerWithdatePickerMode:(UIDatePickerMode)datePickerMode {UIDatePicker *datePicker = [[UIDatePicker alloc] init];datePicker.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"zh-CN"];datePicker.datePickerMode = datePickerMode;datePicker.backgroundColor = [UIColor whiteColor];if (self.defaulDate) {[datePicker setDate:self.defaulDate];}self.datePicker = datePicker;datePicker.frame = CGRectMake(0, ITTToobarHeight, [UIScreen mainScreen].bounds.size.width, datePicker.frame.size.height);self.pickeviewHeight = datePicker.frame.size.height;[self addSubview:datePicker];}//设置toolBar的各个属性，并作为view的子视图- (void)setUpToolBar {self.toolbar = [self setToolbarStyle];[self setToolbarWithPickViewFrame];[self addSubview:self.toolbar];}//设置toolBar的样式-(UIToolbar *)setToolbarStyle {UIToolbar *toolbar = [[UIToolbar alloc] init];UIBarButtonItem *left = [[UIBarButtonItem alloc] initWithTitle:@" 取消 " style:UIBarButtonItemStylePlain target:self action:@selector(removeView)];UIBarButtonItem *centerSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];UIBarButtonItem *right = [[UIBarButtonItem alloc] initWithTitle:@" 确定 " style:UIBarButtonItemStylePlain target:self action:@selector(doneClick)];toolbar.items = @[lefttem, centerSpace, right];return toolbar;}//设定tooBar的frame大小- (void)setToolbarWithPickViewFrame {self.toolbar.frame = CGRectMake(0, 0,[UIScreen mainScreen].bounds.size.width, ITTToobarHeight);}//点击确定按钮-(void)doneClick {if (self.datePicker) {NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];dateFormatter.dateFormat = @"yyyy-MM-dd";self.resultString = [dateFormatter stringFromDate:self.datePicker.date];}if ([self.delegate respondsToSelector:@selector(toobarDonBtnHaveClick:resultString:)]) {[self.delegate toobarDonBtnHaveClick:self resultString:self.resultString];}[self removeView];}/*** 从窗口移除本控件*/- (void)removeView {[UIView animateWithDuration:0.25f animations:^{self.frame = CGRectMake(self.frame.origin.x, self.selfViewInitH, self.frame.size.width, self.frame.size.height);} completion:^(BOOL finished) {if (finished) {[self removeFromSuperview];}}];}/*** 在窗口显示本控件*/- (void)showView {[[UIApplication sharedApplication].keyWindow addSubview:self];[UIView animateWithDuration:0.25f animations:^{self.frame = CGRectMake(self.frame.origin.x, self.selfOriginy, self.frame.size.width, self.frame.size.height);} completion:^(BOOL finished) {}];}@end

UIButton *testBitton = [[UIButton alloc] initWithFrame:CGRectMake(0, 450, 111, 40)];[testBitton setBackgroundColor:[UIColor redColor]];[testBitton addTarget:self action:@selector(test) forControlEvents:UIControlEventTouchUpInside];//点击按钮弹出时间选择框- (void)test {ITTPickView *datePicker = [[ITTPickView alloc] initDatePickWithDate:[NSDate date] datePickerMode:UIDatePickerModeDate isHaveNavControler:NO];[datePicker showView];}