关于JTCalendar的使用

JTCalendar是一个可自定义性高，功能强大的日历类库，我们可以改变日历样式，选中日期的多选和单选等功能，下面将介绍JTCalendar的基本使用方法；

附上git地址：https://github.com/jie0394/JTCalendarTest.git

在你添加日历控件的ViewController中

    _calendarManager.dateHelper.calendar.firstWeekday = 2;//设置第一列为周一
    [_calendarManager setMenuView:_calendarMenuView];
    [_calendarManager setContentView:_calendarContentView];
    [_calendarManager setDate:[NSDate date]];

改变日历样式

- (void)calendar:(JTCalendarManager *)calendar prepareDayView:(JTCalendarDayView *)dayView{

if([dayView isFromAnotherMonth]){//是否显示上个月和下个月的日期
//        dayView.hidden = YES;
        dayView.circleView.hidden = YES;
        
        dayView.backgroundColor = [UIColor whiteColor];
        
        dayView.labNumber.hidden = YES;
        
        dayView.textLabel.textColor = [UIColor colorWithHexString:@"CCCCCC"];
    }


 dayView.backgroundColor = [UIColor whiteColor];//每一日期格子的view；
 dayView.textLabel.textColor = [UIColor colorWithHexString:@"CCCCCC"];//日期数字label，课改变字体颜色，大小等
if([_calendarManager.dateHelper date:[NSDate date] isTheSameDayThan:dayView.date]){//设置今天的日期样式，比如显示为今天，改变字体颜色
        dayView.circleView.hidden = YES;//是否显示小圆点

        dayView.textLabel.text = @"今天";
        
        dayView.textLabel.textColor = [UIColor colorWithHexString:@"13C56D"];
        
        dayView.labNumber.textColor = [UIColor colorWithHexString:@"666666"];
}
if (_dateSelected && [_calendarManager.dateHelper date:_dateSelected isTheSameDayThan:dayView.date]) {//选中日期

}

if([self haveEventForDay:dayView.date]){//当前日期是否有事件，我舍弃了小圆点，自定义显示了有几条信息
        dayView.dotView.hidden = NO;
    }
    else{
        dayView.dotView.hidden = YES;
    }
if ([_calendarManager.dateHelper date:[NSDate date] isEqualOrAfter:dayView.date] 
&& ![_calendarManager.dateHelper date:[NSDate date] isTheSameDayThan:dayView.date]) {//今天之前日期（改变字体颜色，等等，我们的需求是要改）
}
 }

切换到上一页下一页所执行的代理事件

- (void)calendarDidLoadNextPage:(JTCalendarManager *)calendar//下个月
{
    //    NSLog(@"Next page loaded");
    
    //[self loadData:[calendar date] andChangePage:YES];//从服务器请求下个月的事件

    //[self refreshCalendar:[calendar date]];
}

- (void)calendarDidLoadPreviousPage:(JTCalendarManager *)calendar//上个月
{
    //    NSLog(@"Previous page loaded");
    
   
}

日期点击事件

- (void)calendar:(JTCalendarManager *)calendar didTouchDayView:(JTCalendarDayView *)dayView
{
    _dateSelected = dayView.date;
    
    [self loadClassList:dayView.date];

    // Animation for the circleView
    dayView.circleView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.1, 0.1);
    [UIView transitionWithView:dayView
                      duration:.3
                       options:0
                    animations:^{
                        dayView.circleView.transform = CGAffineTransformIdentity;
                        [_calendarManager reload];
                    } completion:nil];
    
    
    // Don't change page in week mode because block the selection of days in first and last weeks of the month
    if(_calendarManager.settings.weekModeEnabled){
        return;
    }
    
    // Load the previous or next page if touch a day from another month
    
    if(![_calendarManager.dateHelper date:_calendarContentView.date isTheSameMonthThan:dayView.date]){
        if([_calendarContentView.date compare:dayView.date] == NSOrderedAscending){
            [_calendarContentView loadNextPageWithAnimation];
        }
        else{
            [_calendarContentView loadPreviousPageWithAnimation];
        }
    }
}

下面是改变日历显示多少行的问题，有时候日期的最后一天是在第六行，有的时候是第五行，所以产品会让我们动态改变日历的高度

我们可以在JTCalendarPageView.m中做一些改动，然后会日历会自动隐藏和显示最后一行

找到reload这个方法，将

_numberOfWeeksDisplayed = MIN([_manager.dateHelper numberOfWeeks:_date], MAX_WEEKS_BY_MONTH);
        if(_numberOfWeeksDisplayed == 0){
            _numberOfWeeksDisplayed = [_manager.dateHelper numberOfWeeks:_date];
        }

改成

 _numberOfWeeksDisplayed = MIN(0, MAX_WEEKS_BY_MONTH);
        if(_numberOfWeeksDisplayed == 0){
            _numberOfWeeksDisplayed = [_manager.dateHelper numberOfWeeks:_date];
        }

然后在layoutSubviews方法中加上这句话

- (void)layoutSubviews
{    
    [super layoutSubviews];

    if(!_weeksViews){
        return;
    }
    
    
    float hight = 0.0;
    if ([_manager.dateHelper numberOfWeeks:self.manager.date] == 5) {
        hight = (Winth - 20)/7 * 6;
    }else{
        hight = Winth - 20;
        
    }
    self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, (Winth - 20), hight);
    CGFloat y = 0;
    CGFloat weekWidth = self.frame.size.width;
    if(_manager.settings.pageViewHaveWeekDaysView){
        CGFloat weekDayHeight = _weekDayView.frame.size.height; // Force use default height
        
        if(weekDayHeight == 0){ // Or use the same height than weeksViews
            weekDayHeight = self.frame.size.height / (_numberOfWeeksDisplayed + 1);
        }
        
        _weekDayView.frame = CGRectMake(0, 0, weekWidth, weekDayHeight);
        y = weekDayHeight;
    }
    
    CGFloat weekHeight = (self.frame.size.height - y) / [_manager.dateHelper numberOfWeeks:self.manager.date];
    
    for(UIView *weekView in _weeksViews){
        weekView.frame = CGRectMake(0, y, weekWidth, weekHeight);
        y += weekHeight;
    }
}

继续回到viewContoller

添加下面几个方法

-(void)refreshCalendar:(NSDate *)currentDate{

    
//底部视图到日历的位置（用于遮盖日历最后一行，试了一下改变高度，发现改变高度每滑动一次内存就会增加很多，变得很卡，所以用了个很笨的方法）
 float hight = 0.0; if ([self.calendarManager.dateHelper numberOfWeeks:currentDate] == 5) { hight = (Winth - 20)/7 ; if (Winth < 375) { hight = 0.8*(Winth - 20)/7; } self.contentViewTop.constant = 0 - hight;//使用autolayOut拖出来的底部视图距离顶部的日历控件的高度 }else{ self.contentViewTop.constant = 0; } } 
  
 
  
 再上一页和下一页加载时调用 
  
 
  
 
  
- (void)calendarDidLoadNextPage:(JTCalendarManager *)calendar
{
    //    NSLog(@"Next page loaded");
    


    [self refreshCalendar:[calendar date]];
}

- (void)calendarDidLoadPreviousPage:(JTCalendarManager *)calendar
{
    //    NSLog(@"Previous page loaded");
    
    
    [self refreshCalendar:[calendar date]];
}
 
  
 
  
 
  
 
  
写的太乱了，没办法，老大让写文档，随便写写，如果有疑问可以问我，等有时间写个demo出来
 
  

 
  
效果图