FSCalendar二、使用三、 显示农历四、 其他代理方法五、 特殊需求定制

 FSCalendar是开源iOS日历控件，支持横向、纵向滑动. 月模式，周模式. 显示农历,标记时间.定制时间范围.选择事件等多种需求.

一、安装

1. 使用CocoaPods安装 (安装流程不叙述了,直接搜索FSCalendar 最新版安装)

2. 手动安装(github地址: https://github.com/WenchaoD/FSCalendar) 下载之后直接把FSCalendar文件夹拖进你的项目中，确保Copy items if needed被选中即可.

二、使用

1 引入头文件.  2 添加代理 . 3 声明FSCalendar 

4 添加FSCalendar

5 关于颜色设置和文字设置参考下面图片

三、 显示农历

1 创建

   获取农历、事件、节假日、节气等信息，通过NSCalendar和EventKit完成

//添加头文件

#import <EventKit/EventKit.h>

 

//创建Calendar

@property (strong, nonatomic) NSCalendar *chineseCalendar;

//特殊节日数组

@property (strong, nonatomic) NSArray<EKEvent *>  *events;

//农历数组

@property (strong, nonatomic) NSArray<NSString *>  *lunarChars;

2 添加数据

//初始化

self.chineseCalendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierChinese];   

//添加农历数组

self.lunarChars = @[@"初一",@"初二",@"初三",@"初四",@"初五",@"初六",@"初七",@"初八",@"初九",@"初十",@"十一",@"十二",@"十三",@"十四",@"十五",@"十六",@"十七",@"十八",@"十九",@"二十",@"二一",@"二二",@"二三",@"二四",@"二五",@"二六",@"二七",@"二八",@"二九",@"三十"];   

//添加特殊节日数组

    __weak typeof(self) weakSelf = self;       

 EKEventStore *store = [[EKEventStore alloc] init];             

   [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {        if(granted) {            NSDate *startDate = [NSDate dateWithTimeIntervalSinceNow:-3600*24*90];; // 开始日期            NSDate *endDate =[NSDate dateWithTimeIntervalSinceNow:3600*24*90]; // 截止日期                                    NSPredicate *fetchCalendarEvents = [store predicateForEventsWithStartDate:startDate endDate:endDate calendars:nil];            NSArray*eventList = [store eventsMatchingPredicate:fetchCalendarEvents];            NSArray*events = [eventList filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(EKEvent * _Nullable event, NSDictionary* _Nullable bindings) {

return event.calendar.subscribed;

}]];

weakSelf.events = events;

}

}];

3 实现并显示到控件

- (NSString *)calendar:(FSCalendar *)calendar subtitleForDate:(NSDate *)date{   

 EKEvent *event = [self eventsForDate:date].firstObject;       

 if (event) {            return event.title;    }      

  NSInteger day = [_chineseCalendar component:NSCalendarUnitDay fromDate:date]; 

   return _lunarChars[day-1];

}//代理添加 农历显示

- (NSArray*)eventsForDate:(NSDate *)date{   

    NSArray*filteredEvents = [self.events filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(EKEvent * _Nullable evaluatedObject, NSDictionary* _Nullable bindings) {

return [evaluatedObject.occurrenceDate isEqualToDate:date];

}]];

return filteredEvents;

}//返回特殊节日的方法

 

农历显示

3 标记特殊位置方法(圆点)

- (NSInteger)calendar:(FSCalendar *)calendar numberOfEventsForDate:(NSDate *)date{

//要标记的日期显示圆点3个其他不显示  

if ([[self.dateFormatter stringFromDate:date] isEqualToString:[self.dateFormatter stringFromDate:self.DifferenceDate]]) {       

return 3;

}else    {        //特殊日期标记

//        _Calendar.appearance.eventDefaultColor=[UIColor blueColor];//        //            NSArray*events = [self eventsForDate:date];

//            return events.count;

return 0;

}

}

//取消今天的颜色设置为白色或者原色就好了

四、 其他代理方法

1 时间选择事件

-(void)calendar:(FSCalendar *)calendar didSelectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition

{

NSString *str =[NSString stringWithFormat:@"确认(%@)",[self.dateFormatter stringFromDate:date]];

[self.DateVerify setTitle:str forState:UIControlStateNormal];

}

2 设置今天文字为"今",其他不变.

- (NSString *)calendar:(FSCalendar *)calendar titleForDate:(NSDate *)date{

if ([self.chineseCalendar isDateInToday:date]) 

{return @"今";}

return nil;

}

3 设置可选择的时间范围

//下面的时间是2015.1.1~今天的范围

//最小时间2015.1.1

- (NSDate *)minimumDateForCalendar:(FSCalendar *)calendar

{

NSDateFormatter *fmt = [[NSDateFormatter alloc] init];

return [fmt dateFromString:@"2015-01-01"];

}

//最大时间今天

- (NSDate *)maximumDateForCalendar:(FSCalendar *)calendar

{

return [NSDate date];

}

五、 特殊需求定制

1,回到今天 ,上一个月和下一个月.滚动动画.

一 FSCalendar 给出了方法去到指定时间的方法

[self.Calendar setCurrentPage:[NSDate date] animated:YES];//回到今天(你需要去到的时间date和是否显示动画)

二  上一个月和下一个月

//上一个月

NSDate *nextMonth = [self.chineseCalendar dateByAddingUnit:NSCalendarUnitMonth value:-1 toDate:self.Calendar.currentPage options:0];

[self.Calendar setCurrentPage:nextMonth animated:YES];

//下一个月

NSDate *nextMonth = [self.chineseCalendar dateByAddingUnit:NSCalendarUnitMonth value:1 toDate:self.Calendar.currentPage options:0];

[self.Calendar setCurrentPage:nextMonth animated:YES];

2  周模式和月模式的切换和应用

展开与闭合

一 ,FSCalendar添加手势 左右轻扫滑动是翻页 上下轻扫就是展开与闭合

UISwipeGestureRecognizer *SwipeDown =[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeDownAction:)];

SwipeDown.direction =UISwipeGestureRecognizerDirectionDown;

[self.Calendar addGestureRecognizer:SwipeDown];

UISwipeGestureRecognizer *SwipeUp =[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(SwipeUpAction:)];

SwipeUp.direction =UISwipeGestureRecognizerDirectionUp;

[self.Calendar addGestureRecognizer:SwipeUp];

二 手势事件(FSCalendar同样给出方法)

-(void)SwipeDownAction:(UISwipeGestureRecognizer *)Action{

[self.Calendar setScope:FSCalendarScopeMonth animated:YES];

}

-(void)SwipeUpAction:(UISwipeGestureRecognizer *)Action{

[self.Calendar setScope:FSCalendarScopeWeek animated:YES];

}

三 难点!(TableView怎样联动FSCalendar周和月的高度)

FSCalendar 代理同样给出了动画事件获取高度

- (void)calendar:(FSCalendar *)calendar boundingRectWillChange:(CGRect)bounds animated:(BOOL)animated

{

//bounds可以获取高度

//动画结束更新TableView大小位置(请查看SDAutoLayout使用)

[self.tableView updateLayout];

 

/*

1 第一步给FSCalendar子控件添加tag值

for (int i = 0; i<_Calendar.subviews.count; i++) {

UIView *son =_Calendar.subviews[i];

son.tag=i+100;

}

2 拿出FSCalendar周视图view

self.tableView.sd_layout

.leftSpaceToView(self.view,0)//靠左距离为0

.topSpaceToView([self.Calendar viewWithTag:100+0],0)//靠上周视图的距离0

.rightSpaceToView(self.view,0)//右

.bottomSpaceToView(self.view,0);//下

每次动画结束更新这个即可

*/

}

3 . 时间段选择

时间段选择

一 设置和添加 

//设置多选

_calendar.allowsMultipleSelection = YES;

//添加 开始时间,结束时间. 选择状态

@property(nonatomic,copy)NSDate *BeginDate;

@property(nonatomic,copy)NSDate *EndDate;

@property(nonatomic,assign)BOOL SelectAction;

 

二  设置 定制效果(默认一个范围,每次选择都重新开始.) 

//(默认选择前七天)

self.BeginDate= [[NSDate date] dateByAddingTimeInterval:-6*60*60*24];

self.EndDate=[NSDate date];

for (int i = 0; i<7; i++) {

[_calendar selectDate:[[NSDate date] dateByAddingTimeInterval:-i*60*60*24]];

}

//设置开始和结束标题

- (NSString *)calendar:(FSCalendar *)calendar titleForDate:(NSDate *)date{

if (self.SelectAction) {

if ([[self.dateFormatter stringFromDate:self.BeginDate] isEqualToString:[self.dateFormatter stringFromDate:date]]) {

return @"开始";

}else{ return nil; }

}else{

if ([[self.dateFormatter stringFromDate:self.BeginDate] isEqualToString:[self.dateFormatter stringFromDate:date]]) {

return @"开始";

}else if ([[self.dateFormatter stringFromDate:self.EndDate] isEqualToString:[self.dateFormatter stringFromDate:date]]){

return @"结束";

}else{

return nil;

}}}

//设置

//选中某一天进行相关操作

- (void)calendar:(FSCalendar *)calendar didSelectDate:(NSDate *)date {

if (!self.SelectAction) {

NSArray *selectArrray =[calendar selectedDates];

for (NSDate *select in selectArrray) {

[calendar deselectDate:select];

}

[_calendar selectDate:date];

self.SelectAction=YES;

self.BeginDate=date;

self.EndDate=nil;

[_calendar reloadData];

}else

{

NSInteger number =[self numberOfDaysWithFromDate:self.BeginDate    toDate:date];

NSLog(@"%ld",number);

if (number<0) {

self.SelectAction=YES;

UIAlertController    *AlertController =[UIAlertController alertControllerWithTitle:nil message:@"小于开始日期,请重新选择" preferredStyle:UIAlertControllerStyleAlert];

AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;

[delegate.window.rootViewController presentViewController:self.Alert animated:YES completion:nil];

dispatch_time_t time = dispatch_time(DISPATCH_TIME_NOW, 1* NSEC_PER_SEC);

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_after(time, queue, ^{

dispatch_async(dispatch_get_main_queue(), ^{

[AlertController dismissViewControllerAnimated:YES completion:^{}];

[calendar deselectDate:date];

});

});

}else

{

self.SelectAction=NO;

self.EndDate=date;

for (int i = 0; i<number; i++) {

[_calendar selectDate:[date dateByAddingTimeInterval:-i*60*60*24]];

}

[_calendar reloadData];

}}}

//点击选择中范围

-(void)calendar:(FSCalendar *)calendar didDeselectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition

{

NSArray *selectArrray =[calendar selectedDates];

for (NSDate *select in selectArrray) {

[calendar deselectDate:select];

}

[_calendar selectDate:date];

self.SelectAction=YES;

self.BeginDate=date;

self.EndDate=nil;

[_calendar reloadData];

}

#pragma -mark 计算日期差的方法

-(NSInteger)numberOfDaysWithFromDate:(NSDate *)fromDate toDate:(NSDate *)toDate{

NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

NSDateComponents    * comp = [calendar components:NSCalendarUnitDay

fromDate:fromDate

toDate:toDate

options:NSCalendarWrapComponents];

return comp.day;

}

链接：https://www.jianshu.com/p/2715b6b68217

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