1.工具类JF_CalendarTools:
.h文件
#import <Foundation/Foundation.h>
@interface JF_CalendarTools : NSObject
+(int)getWeekOfFirstDayOfMonthWithYear:(int)year withMonth:(int)month;
+(int)getDaysOfMonthWithYear:(int)year withMonth:(int)month;
+(int)getYear;
+(int)getMonth;
+(int)getDay;
+(BOOL)isLoopYear:(NSInteger)year;
@end
.m文件
#import "JF_CalendarTools.h"
@implementation JF_CalendarTools
//返回当前年
+(int)getYear{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *nowDate = [NSDate date];
NSDateComponents *nowDateComps = [[NSDateComponents alloc] init];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
nowDateComps = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:nowDate];
return (int)[nowDateComps year];
}
//返回当前月
+(int)getMonth{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *nowDate = [NSDate date];
NSDateComponents *nowDateComps = [[NSDateComponents alloc] init];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
nowDateComps = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:nowDate];
return (int)[nowDateComps month];
}
//返回当前日
+(int)getDay{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *nowDate = [NSDate date];
NSDateComponents *nowDateComps = [[NSDateComponents alloc] init];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
nowDateComps = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:nowDate];
return (int)[nowDateComps day];
}
//获得某个月的第一天是星期几
+(int)getWeekOfFirstDayOfMonthWithYear:(int)year withMonth:(int)month{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSString *firstWeekDayMonth = [[NSString alloc] initWithFormat:@"%d",year];
firstWeekDayMonth = [firstWeekDayMonth stringByAppendingString:[[NSString alloc]initWithFormat:@"%s","-"]];
firstWeekDayMonth = [firstWeekDayMonth stringByAppendingString:[[NSString alloc]initWithFormat:@"%d",month]];
firstWeekDayMonth = [firstWeekDayMonth stringByAppendingString:[[NSString alloc]initWithFormat:@"%s","-"]];
firstWeekDayMonth = [firstWeekDayMonth stringByAppendingString:[[NSString alloc]initWithFormat:@"%d",1]];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
NSDate *weekOfFirstDayOfMonth = [dateFormatter dateFromString:firstWeekDayMonth];
NSDateComponents *newCom = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitWeekday fromDate:weekOfFirstDayOfMonth];
return (int)[newCom weekday] - 1;
}
//返回一个月有多少天
+(int)getDaysOfMonthWithYear:(int)year withMonth:(int)month{
NSInteger days = 0;
//1,3,5,7,8,10,12
NSArray *bigMoth = [[NSArray alloc] initWithObjects:@"1",@"3",@"5",@"7",@"8",@"10",@"12", nil];
//4,6,9,11
NSArray *milMoth = [[NSArray alloc] initWithObjects:@"4",@"6",@"9",@"11", nil];
if ([bigMoth containsObject:[[NSString alloc] initWithFormat:@"%ld",(long)month]]) {
days = 31;
}else if([milMoth containsObject:[[NSString alloc] initWithFormat:@"%ld",(long)month]]){
days = 30;
}else{
if ([self isLoopYear:year]) {
days = 29;
}else
days = 28;
}
return (int)days;
}
//判断是否是闰年
+(BOOL)isLoopYear:(NSInteger)year{
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
return true;
}else
return NO;
}
@end
2.JF_CalendarCell类：
.h文件
#import <UIKit/UIKit.h>
@interface JF_CalendarCell : UICollectionViewCell
@property(nonatomic,strong) UILabel *numLabel;
@end
.m文件
#import "JF_CalendarCell.h"
@implementation JF_CalendarCell
-(instancetype)initWithFrame:(CGRect)frame{
self=[super initWithFrame:frame];
if (self) {
self.numLabel=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, 28, 28)];
// self.numLabel.backgroundColor=[UIColor grayColor];
self.numLabel.textAlignment=1;
self.numLabel.layer.masksToBounds=YES;
//self.numLabel.layer.borderWidth=1;
self.numLabel.layer.cornerRadius=28/2;
// self.numLabel.center=self.center;
[self addSubview:self.numLabel];
}
return self;
}
@end
3.JF_CalendarView类
.h文件
#import <UIKit/UIKit.h>
#import "JF_CalendarTools.h"
#import "JF_CalendarCell.h"
#define Blue_textColor [UIColor colorWithRed:105/255.0 green:187/255.0 blue:229/255.0 alpha:1.0]
#define Gray_textColor [UIColor colorWithRed:241/255.0 green:241/255.0 blue:241/255.0 alpha:1.0]
@interface JF_CalendarView : UICollectionView<UICollectionViewDataSource,UICollectionViewDelegate>
@property(nonatomic,assign) int year;
@property(nonatomic,assign) int searchYear;
@property(nonatomic,assign) int month;
@property(nonatomic,assign) int searchMonth;
@property(nonatomic,assign) int day;
@property(nonatomic,assign) int searchDay;
@property(nonatomic,assign) int daysOfMonth;
@property(nonatomic,assign) int searchDaysOfMonth;
@property(nonatomic,assign) CGFloat cellWidth;
@property(nonatomic,strong) UIView *headerView;
@property(nonatomic,copy) NSMutableArray *registerArr;
@end
.m文件
#import "JF_CalendarView.h"
@implementation JF_CalendarView
-(NSMutableArray*)registerArr{
if (!_registerArr) {
#pragma arguments-初始化应该加载本地或者服务器端签到日期，敲到完成上传或者本地存储；
_registerArr=[[NSMutableArray alloc]init];
}
return _registerArr;
}
-(instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(UICollectionViewLayout *)layout{
self=[super initWithFrame:frame collectionViewLayout:layout];
if (self) {
[self registerClass:[JF_CalendarCell class] forCellWithReuseIdentifier:@"cell"];
self.scrollEnabled=NO;
// UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc]init];
//layout.minimumInteritemSpacing=0;
//
self.delegate=self;
self.backgroundColor=[UIColor whiteColor];
self.dataSource=self;
//[self registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cell"];
//
self.year=[JF_CalendarTools getYear];
self.searchYear=self.year;
self.month=[JF_CalendarTools getMonth];
self.searchMonth=self.month;
self.day=[JF_CalendarTools getDay];
self.searchDay=self.day;
//
[self.registerArr addObject:[NSString stringWithFormat:@"%.4d%.2d%.2d",self.year,self.month,self.day]];
self.daysOfMonth=[JF_CalendarTools getDaysOfMonthWithYear:self.year withMonth:self.month];
self.searchDaysOfMonth=self.daysOfMonth;
//
self.cellWidth=(frame.size.width-8*5)/7;
//
[self setHeaderViewWithWidth:frame.size.width];
//
// NSLog(@"%d",[JF_CalendarTools getWeekOfFirstDayOfMonthWithYear:self.year withMonth:self.month]);
}
return self;
}
-(void)setHeaderViewWithWidth:(CGFloat)width{
NSArray *a=[NSArray arrayWithObjects:@"日", @"一",@"二",@"三",@"四",@"五",@"六",nil];
[self.headerView removeFromSuperview];
self.headerView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, width, 80)];
//self.headerView.backgroundColor=[UIColor blueColor];
//
UIButton *nextButton=[UIButton buttonWithType:UIButtonTypeCustom];
[nextButton setFrame:CGRectMake(width-90, 10, 20, 20)];
[nextButton addTarget:self action:@selector(next:) forControlEvents:UIControlEventTouchUpInside];
[nextButton setImage:[UIImage imageNamed:@"next.png"] forState:UIControlStateNormal];
// nextButton.backgroundColor=[UIColor blackColor];
[self.headerView addSubview:nextButton];
UIButton *preButton=[UIButton buttonWithType:UIButtonTypeCustom];
[preButton setFrame:CGRectMake(70, 10, 20, 20)];
[preButton addTarget:self action:@selector(pre:) forControlEvents:UIControlEventTouchUpInside];
[preButton setImage:[UIImage imageNamed:@"pre.png"] forState:UIControlStateNormal];
// preButton.backgroundColor=[UIColor blackColor];
[self.headerView addSubview:preButton];
//
UILabel *dateLabel=[[UILabel alloc]initWithFrame:CGRectMake(0, 16, 100, 30)];
dateLabel.textAlignment=1;
dateLabel.center=CGPointMake(width/2, 20);
dateLabel.text=[NSString stringWithFormat:@"%d-%.2d",self.searchYear,self.searchMonth];
[self.headerView addSubview:dateLabel];
//
UIView *blueView=[[UIView alloc]initWithFrame:CGRectMake(10, 40, width-20, 35)];
blueView.backgroundColor=Blue_textColor;
[self.headerView addSubview:blueView];
CGFloat labelWidth=(width-35)/7;
for (int i=0; i<7; i++) {
UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(i*labelWidth+3, 0, labelWidth, 30)];
label.text=[a objectAtIndex:i];
label.textAlignment=1;
label.textColor=[UIColor whiteColor];
[blueView addSubview:label];
}
[self addSubview:self.headerView];
}
-(void)next:(UIButton*)sender{
//NSLog(@"next");
if (self.searchMonth==12) {
self.searchMonth=1;
self.searchYear++;
}else{
self.searchMonth++;
}
// self.searchDay=[JF_CalendarTools getDay]
[self setHeaderViewWithWidth:self.frame.size.width];
[self reloadData];
}
-(void)pre:(UIButton*)sender{
// NSLog(@"pre");
if (self.searchMonth==1) {
self.searchMonth=12;
self.searchYear--;
}else{
self.searchMonth--;
}
// self.searchDay=[JF_CalendarTools getDay]
self.searchDaysOfMonth=[JF_CalendarTools getDaysOfMonthWithYear:self.searchYear withMonth:self.searchMonth];
[self setHeaderViewWithWidth:self.frame.size.width];
[self reloadData];
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
// return _datasourceArr.count;
return 42;
}
//定义展示的Section的个数
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
//定义每个UICollectionCell 的大小
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
//return CGSizeMake((K_Width-5)/4, 130);
return CGSizeMake(self.cellWidth, self.cellWidth-10);
}
//定义每个UICollectionView 的 margin
-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
// UIEdgeInsetsMake(<#CGFloat top#>, <#CGFloat left#>, <#CGFloat bottom#>, <#CGFloat right#>)
return UIEdgeInsetsMake(80, 17.5, 1, 17.5);
}
-(UICollectionViewCell*)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
JF_CalendarCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
int dateNum=(int)indexPath.row-[JF_CalendarTools getWeekOfFirstDayOfMonthWithYear:self.searchYear withMonth:self.searchMonth]+1;
/*
统一日期设置
*/
//月内
if (dateNum>=1&&(indexPath.row<self.searchDaysOfMonth+[JF_CalendarTools getWeekOfFirstDayOfMonthWithYear:self.searchYear withMonth:self.searchMonth])) {
cell.numLabel.text=[NSString stringWithFormat:@"%d",dateNum];
cell.numLabel.textColor=[UIColor blackColor];
}
//前一个月
if (dateNum<1) {
// cell.numLabel.text=@"";
cell.numLabel.textColor=[UIColor grayColor];
int days;
if (self.searchMonth!=1) {
days=[JF_CalendarTools getDaysOfMonthWithYear:self.searchYear withMonth:self.searchMonth-1];
}else if(self.searchMonth==1){
days=[JF_CalendarTools getDaysOfMonthWithYear:self.searchYear-1 withMonth:12];
}
cell.numLabel.text=[NSString stringWithFormat:@"%d",dateNum+days];
}
//后一个月
if (dateNum>self.searchDaysOfMonth) {
cell.numLabel.text=[NSString stringWithFormat:@"%d",dateNum-self.searchDaysOfMonth];
cell.numLabel.textColor=[UIColor grayColor];
}
/*
背景颜色设置
*/
//当前月
if ([NSString stringWithFormat:@"%d%.2d",self.year,self.month].intValue==[NSString stringWithFormat:@"%d%.2d",self.searchYear,self.searchMonth].intValue) {
cell.numLabel.backgroundColor=[UIColor whiteColor];
cell.numLabel.layer.masksToBounds=YES;
cell.numLabel.layer.borderColor=[UIColor grayColor].CGColor;
cell.numLabel.layer.borderWidth=0;
//月内
if (dateNum>=1&&(dateNum<=self.searchDay)) {
cell.numLabel.backgroundColor=Gray_textColor;
cell.numLabel.text=[NSString stringWithFormat:@"%d",dateNum];
cell.numLabel.layer.borderWidth=1;
}
}
//之后的月
if ([NSString stringWithFormat:@"%d%.2d",self.year,self.month].intValue<[NSString stringWithFormat:@"%d%.2d",self.searchYear,self.searchMonth].intValue) {
// NSLog(@"大于");
cell.numLabel.layer.masksToBounds=YES;
cell.numLabel.layer.borderColor=[UIColor grayColor].CGColor;
cell.numLabel.layer.borderWidth=0;
cell.numLabel.backgroundColor=[UIColor whiteColor];
}
//之前的月
if ([NSString stringWithFormat:@"%d%.2d",self.year,self.month].intValue>[NSString stringWithFormat:@"%d%.2d",self.searchYear,self.searchMonth].intValue) {
//NSLog(@"小于");
cell.numLabel.layer.masksToBounds=YES;
cell.numLabel.layer.borderColor=[UIColor grayColor].CGColor;
cell.numLabel.layer.borderWidth=0;
cell.numLabel.backgroundColor=[UIColor whiteColor];
//月内
if (dateNum>=1&&(indexPath.row<self.searchDaysOfMonth+[JF_CalendarTools getWeekOfFirstDayOfMonthWithYear:self.searchYear withMonth:self.searchMonth])) {
cell.numLabel.backgroundColor=Gray_textColor;
cell.numLabel.text=[NSString stringWithFormat:@"%d",dateNum];
cell.numLabel.layer.borderWidth=1;
}
}
/*
设置签到颜色
*/
#pragma arguments-数组内包含当前日期则说明此日期签到了，设置颜色为蓝色；
if([self.registerArr containsObject:[NSString stringWithFormat:@"%.4d%.2d%.2d",self.searchYear,self.searchMonth,dateNum]]){
//NSLog(@"blue");
cell.numLabel.backgroundColor=Blue_textColor;
cell.numLabel.textColor=[UIColor whiteColor];
cell.numLabel.layer.masksToBounds=YES;
cell.numLabel.layer.borderColor=[UIColor grayColor].CGColor;
cell.numLabel.layer.borderWidth=0;
}
//NSLog(@"%d",[NSString stringWithFormat:@"%d%.2d",self.searchYear,self.searchMonth].intValue);
return cell;
}
/*
//UICollectionView被选中时调用的方法
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
}
*/
//返回这个UICollectionView是否可以被选择
-(BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}
@end
4.效果图：
