修改文件结构

ALCalendarPicker/ALCalendarCell.h

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+//
+//  ALCalendarCell.h
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/16.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@class ALCalendarDate;
+
+@interface ALCalendarCell : UICollectionViewCell
+
+@property (nonatomic, strong) ALCalendarDate *date;
+
+/** 星期 */
+@property (nonatomic, copy) NSString *weekDay;
+
+@property (nonatomic, strong, readonly) UILabel *dateLabel;
+
+@end

ALCalendarPicker/ALCalendarCell.m

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+//
+//  ALCalendarCell.m
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/16.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import "ALCalendarCell.h"
+
+#import "ALCalendarDate.h"
+
+#import <Masonry/Masonry.h>
+
+#define KLightGrayColor [UIColor colorWithRed:127.0/255.0 green:143.0/255.0 blue:164.0/255.0 alpha:1]
+
+#define KDarkGrayColor  [UIColor colorWithRed:44.0/255.0 green:49.0/255.0 blue:53.0/255.0 alpha:1]
+
+@interface ALCalendarCell()
+
+@property (nonatomic, strong) UILabel *dateLabel;
+
+@end
+
+@implementation ALCalendarCell
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    if(self = [super initWithFrame:frame]) {
+        [self setupView];
+    }
+    return self;
+}
+
+- (void)setupView
+{
+    [self addSubview:self.dateLabel];
+
+    self.layer.cornerRadius = 5.0f;
+
+    __weak typeof(self) weakSelf = self;
+    [self.dateLabel mas_makeConstraints:^(MASConstraintMaker *make) {
+        make.centerX.equalTo(weakSelf.mas_centerX);
+        make.centerY.equalTo(weakSelf.mas_centerY);
+    }];
+}
+
+- (void)setDate:(ALCalendarDate *)date
+{
+    _date = date;
+    if (date.notThisMonth) {
+        self.backgroundColor = [UIColor whiteColor];
+        self.dateLabel.textColor = KLightGrayColor;
+    } else {
+        self.backgroundColor = [UIColor whiteColor];
+        self.dateLabel.textColor = KDarkGrayColor;
+    }
+    self.dateLabel.text = date.date;
+}
+
+- (void)setWeekDay:(NSString *)weekDay
+{
+    _weekDay = weekDay;
+    self.dateLabel.text = weekDay;
+    self.dateLabel.textColor = KLightGrayColor;
+}
+
+- (UILabel *)dateLabel
+{
+    if (!_dateLabel) {
+        _dateLabel = [[UILabel alloc] init];
+        _dateLabel.textColor = KDarkGrayColor;
+        _dateLabel.font = [UIFont systemFontOfSize:14];
+    }
+    return _dateLabel;
+}
+
+
+@end

ALCalendarPicker/ALCalendarCollectionView.h

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+//
+//  ALCalendarCollectionView.h
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/16.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@class ALCalendarDate,ALCalendarCollectionView,ALCalendarConfig;
+
+@protocol ALCalendarCollectionViewDelegate <NSObject>
+
+/** 
+ * 点击了某个日期
+ */
+- (void)calendarView:(ALCalendarCollectionView *)calendarCollectionView didSelectItem:(ALCalendarDate *)date dateString:(NSString *)dateString;
+
+@end
+
+@interface ALCalendarCollectionView : UICollectionView
+
+/** 当前的年份和月份 yyyy-MM */
+@property (nonatomic, copy) NSString *yearAndMonth;
+
+/** 代理 */
+@property (nonatomic, assign) id<ALCalendarCollectionViewDelegate> collectionViewDelegate;
+
+/** 配置 */
+@property (nonatomic, strong) ALCalendarConfig *config;
+
+@end

ALCalendarPicker/ALCalendarCollectionView.m

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+//
+//  ALCalendarCollectionView.m
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/16.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import "ALCalendarCollectionView.h"
+
+#import "ALCalendarCell.h"
+
+#import "ALCalendarDate.h"
+#import "ALCalendarHelper.h"
+#import "ALCalendarConfig.h"
+
+#import "UIView+Frame.h"
+
+@interface ALCalendarCollectionView()<UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>
+
+@property (nonatomic, strong) NSArray *titles;
+
+@property (nonatomic, strong) NSArray *dates;
+
+@end
+
+@implementation ALCalendarCollectionView
+
+static NSString *identifier = @"dateCell";
+
+- (instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(nonnull UICollectionViewLayout *)layout
+{
+    if (self = [super initWithFrame:frame collectionViewLayout:layout]) {
+        self.dataSource      = self;
+        self.delegate        = self;
+        self.contentInset    = UIEdgeInsetsMake(5, 20, 0, 20);
+        self.backgroundColor = [UIColor whiteColor];
+        [self registerClass:[ALCalendarCell class] forCellWithReuseIdentifier:identifier];
+    }
+    return self;
+}
+
+#pragma mark - UICollectionDataSource
+- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
+{
+    return 2;
+}
+
+- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
+{
+    if (section == 0) return 7;
+    return self.dates.count;
+}
+
+- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
+{
+    ALCalendarCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];
+    cell.backgroundColor = [UIColor whiteColor];
+
+    if(indexPath.section == 0) {
+        cell.weekDay = self.titles[indexPath.row];
+    } else {
+        ALCalendarDate *date = self.dates[indexPath.row];
+        cell.date = date;
+
+        /** 当前显示的日期 */
+        NSString *currentDate = [self.yearAndMonth stringByAppendingFormat:@"-%02zd",date.date.integerValue];
+
+        if ([self.config.heightlightDates containsObject:currentDate]) {
+            cell.backgroundColor = self.config.hl_backgroundColor;
+            cell.layer.cornerRadius = self.config.hl_backgroundCornerRadius.floatValue;
+            cell.dateLabel.textColor = self.config.hl_textColor;
+        }
+
+        if (date.isToday) {
+            if (![self.config.heightlightDates containsObject:currentDate] ||
+                ([self.config.heightlightDates containsObject:currentDate] && !self.config.hightlightPriority)) {
+                cell.backgroundColor     = self.config.tod_backgroundColor;
+                cell.layer.cornerRadius  = self.config.tod_backgroundCornerRadius.floatValue;
+                cell.dateLabel.textColor = self.config.tod_textColor;
+            }
+        }
+    }
+    return cell;
+}
+
+#pragma mark - UICollectionDelegate
+
+- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
+{
+    if ([self.collectionViewDelegate respondsToSelector:@selector(calendarView:didSelectItem:dateString:)]) {
+        ALCalendarDate *date = self.dates[indexPath.row];
+        [self.collectionViewDelegate calendarView:self didSelectItem:date dateString:[self.yearAndMonth stringByAppendingFormat:@"-%02zd",date.date.integerValue]];
+    }
+}
+
+- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
+{
+    return CGSizeMake(self.width / 10, self.width / 10);
+}
+
+- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
+{
+    return 10;
+}
+
+- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section
+{
+    return 10;
+}
+
+- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
+{
+    return UIEdgeInsetsMake(5, 0, 5, 0);
+}
+
+#pragma mark - setter & getter
+
+- (NSArray *)titles
+{
+    return @[@"日",@"一",@"二",@"三",@"四",@"五",@"六"];
+}
+
+- (void)setYearAndMonth:(NSString *)yearAndMonth
+{
+    _yearAndMonth = yearAndMonth;
+    if (yearAndMonth) {
+        _dates = [ALCalendarHelper datesWithYearAndMonth:yearAndMonth];
+        [self reloadData];
+    }
+}
+
+@end

ALCalendarPicker/ALCalendarConfig.h

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+//
+//  ALCalendarConfig.h
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/17.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface ALCalendarConfig : NSObject
+
+/** 当前日期优先 */
+@property (nonatomic, assign) BOOL hightlightPriority;
+
+/**** 今天日期 *****/
+
+/** 文字颜色 */
+@property (nonatomic, strong) UIColor *tod_textColor;
+
+/** 背景颜色 */
+@property (nonatomic, strong) UIColor *tod_backgroundColor;
+
+/** 圆角 */
+@property (nonatomic, strong) NSNumber *tod_backgroundCornerRadius;
+
+/**** 高亮日期 ****/
+
+/** 高亮日期 */
+@property (nonatomic, strong) NSArray<NSString *> *heightlightDates;
+
+/** 文字颜色 */
+@property (nonatomic, strong) UIColor *hl_textColor;
+
+/** 背景颜色 */
+@property (nonatomic, strong) UIColor *hl_backgroundColor;
+
+/** 圆角 */
+@property (nonatomic, strong) NSNumber *hl_backgroundCornerRadius;
+
+@end

ALCalendarPicker/ALCalendarConfig.m

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+//
+//  ALCalendarConfig.m
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/17.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import "ALCalendarConfig.h"
+
+@implementation ALCalendarConfig
+
+@end

ALCalendarPicker/ALCalendarDate.h

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+//
+//  ALCalendarDate.h
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/17.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface ALCalendarDate : NSObject
+
+/** 日期(号数) */
+@property (nonatomic, copy) NSString *date;
+
+/** 不是这个月 */
+@property (nonatomic, assign) BOOL notThisMonth;
+
+/** 是今天 */
+@property (nonatomic, assign) BOOL isToday;
+
++ (instancetype)dateWith:(NSString *)dateStr isNotThisMonth:(BOOL)notThisMonth;
+
+@end

ALCalendarPicker/ALCalendarDate.m

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+//
+//  ALCalendarDate.m
+//  ALCalendarPickerDemo
+//
+//  Created by Arclin on 2017/6/17.
+//  Copyright © 2017年 arclin. All rights reserved.
+//
+
+#import "ALCalendarDate.h"
+
+@implementation ALCalendarDate
+
++ (instancetype)dateWith:(NSString *)dateStr isNotThisMonth:(BOOL)notThisMonth
+{
+    ALCalendarDate *date = [[ALCalendarDate alloc] init];
+    date.date            = dateStr;
+    date.notThisMonth    = notThisMonth;
+    return date;
+}
+
+@end