封装UIDatePicker,日期选取

在做日期选择中经常会用到UIDatePicker这个控件,在此简单封装了下

.h文件中

#import <UIKit/UIKit.h>
@class RMDateView;
typedef NS_ENUM(NSInteger , RMDateViewTag)
{
    RMDateViewTagCancel= 230,
    RMDateViewTagCofirm
};
@protocol RMDateDelegate <NSObject>

// 当点击确定或取消按钮时调用
- (void)RMDateView:(RMDateView *)view dateViewTag:(NSInteger)tag;
// 当调整日期时调用
- (void)RMDateView:(RMDateView *)view datePicker:(UIDatePicker *)datePicker;

@end
@interface RMDateView : UIView
@property (nonatomic, weak)id<RMDateDelegate>delegate;
@property (nonatomic, strong)NSDate *maximumDate;//最大可选日期

- (instancetype)initWithFrame:(CGRect)frame Y:(CGFloat)y datePickerMode:(UIDatePickerMode)datePickerMode;//加y是想设置date picker的位置,其实这样写不太好,可以给定背景view后直接设frame也可以,暂时也没有改,可以自行调整
@end

.m

#import "RMDateView.h"

CGFloat const kButtonHeightInDateView = 30;
CGFloat const kButtonwidthInDateView = 50;
@interface RMDateView ()
@property (nonatomic, strong)UIDatePicker *datePicker;
@end
@implementation RMDateView

- (instancetype)init
{
    @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"Must use initWithFrame:Y:datePickerMode:" userInfo:nil];
    return [self initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight) Y:kScreenHeight - 300 datePickerMode:UIDatePickerModeDate];
}

- (instancetype)initWithFrame:(CGRect)frame Y:(CGFloat)y datePickerMode:(UIDatePickerMode)datePickerMode
{
    self = [super initWithFrame:frame];
    if (self) {
        self.backgroundColor = [UIColor colorWithWhite:0.93 alpha:0.5];
        [self createViewWithY:y datePickerMode:datePickerMode];
    }
    return self;
}

- (void)createViewWithY:(CGFloat)y datePickerMode:(UIDatePickerMode)datePickerMode
{
    
    UIView *backView = [[UIView alloc] initWithFrame:CGRectMake(0, y, kScreenWidth, kButtonHeightInDateView)];
    backView.backgroundColor =  [UIColor colorWithWhite:0.904 alpha:1.000];
    [self addSubview:backView];
    
    // 取消
    UIButton *cancelButton = [RMUtils buttonWith:CGRectMake(0, 0, kButtonwidthInDateView, kButtonHeightInDateView) text:@"取消" backColor:[UIColor clearColor] textColor:RGB(100, 100, 100) tag:RMDateViewTagCancel];

    [cancelButton addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    [backView addSubview:cancelButton];
    
    // 确定
    UIButton *confirmButton = [RMUtils buttonWith:CGRectMake(kScreenWidth - kButtonwidthInDateView,0, kButtonwidthInDateView, kButtonHeightInDateView) text:@"确定" backColor:[UIColor clearColor] textColor:RGB(100, 100, 100) tag:RMDateViewTagCofirm];
    [confirmButton addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
    [backView addSubview:confirmButton];
    
    self.datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(backView.frame), kScreenWidth, 216)];
    self.datePicker.backgroundColor = [UIColor whiteColor];
    self.datePicker.datePickerMode = datePickerMode;
    self.datePicker.maximumDate = self.maximumDate;
    [self addSubview:self.datePicker];
    
    [self.datePicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];
    
    UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];
    [self addGestureRecognizer:tapGestureRecognizer];
}

- (void)buttonAction:(UIButton *)button
{
    if ([_delegate respondsToSelector:@selector(RMDateView:dateViewTag:)]) {
        [self.delegate RMDateView:self dateViewTag:button.tag];
    }
}

- (void)tapGesture:(UIGestureRecognizer *)tap
{
    [self removeFromSuperview];
}

- (void)dateChanged:(UIDatePicker *)datePicker
{
    if ([_delegate respondsToSelector:@selector(RMDateView:datePicker:)]) {
        [self.delegate RMDateView:self datePicker:datePicker];
    }
    
}

简单的封了下,记录下,也便于下次更改,查阅

调用方法(可以直接类似正常的view一样直接add,也可以添加到window上,这里举添加window方式)

<pre code_snippet_id="1662195" snippet_file_name="blog_20160426_1_1662503" name="code" class="objc">    RMDateView<span style="font-family: Arial, Helvetica, sans-serif;"> *dateView = [[</span><span style="font-family: Arial, Helvetica, sans-serif;">RMDateView</span><span style="font-family: Arial, Helvetica, sans-serif;"> alloc] init];</span>

<span style="font-family: Arial, Helvetica, sans-serif;"><span style="white-space:pre">	</span>static UIWindow *_popWindow;</span>

dateView.delegate = self; _popWindow = [[UIWindow alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)]; [_popWindow setBackgroundColor:[UIColor clearColor]]; [_popWindow setWindowLevel:UIWindowLevelNormal]; _popWindow.hidden = NO; [_popWindow addSubview:popView]; [_popWindow makeKeyAndVisible];

调用结束后不要忘记注销

    [_popWindow resignKeyWindow];
    _popWindow = nil;