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JTCalendar支持CocoaPod. 
导入头文件#import "JTCalendar.h"后，你需要创建两个View来放入月份和日历： 
@interface ViewController : UIViewController 

@property (weak, nonatomic) IBOutlet JTCalendarMenuView *calendarMenuView; 
@property (weak, nonatomic) IBOutlet JTCalendarContentView *calendarContentView; 

@property (strong, nonatomic) JTCalendar *calendar; 

@end 

然后就可以在VC中实现了： 
@implementation ViewController 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    self.calendar = [JTCalendar new]; 

    [self.calendar setMenuMonthsView:self.calendarMenuView]; 
    [self.calendar setContentView:self.calendarContentView]; 
    [self.calendar setDataSource:self]; 
} 

- (void)viewDidAppear:(BOOL)animated 
{ 
    [super viewDidAppear:animated]; 

    [self.calendar reloadData]; // （必须要在这里调用）Must be call in viewDidAppear 
} 

- (BOOL)calendarHaveEvent:(JTCalendar *)calendar date:(NSDate *)date 
{ 
    return NO; 
} 

- (void)calendarDidDateSelected:(JTCalendar *)calendar date:(NSDate *)date 
{ 
    NSLog(@"%@", date); 
} 

@end 

另外如果需要改变设置一些参数的话，请在设置日历前设定： 
self.calendar.calendarAppearance.calendar.firstWeekday = 2; // Monday 
self.calendar.calendarAppearance.ratioContentMenu = 1.; 
self.calendar.calendarAppearance.menuMonthTextColor = [UIColor whiteColor]; 
self.calendar.calendarAppearance.dayCircleColorSelected = [UIColor blueColor]; 
self.calendar.calendarAppearance.dayTextColorSelected = [UIColor whiteColor]; 

[self.calendar setMenuMonthsView:self.calendarMenuView]; 
[self.calendar setContentView:self.calendarContentView]; 
[self.calendar setDataSource:self]; 

如果这样写的话，就需要reloadAppearance一下： 
[self.calendar setMenuMonthsView:self.calendarMenuView]; 
[self.calendar setContentView:self.calendarContentView]; 
[self.calendar setDataSource:self]; 

self.calendar.calendarAppearance.calendar.firstWeekday = 2; // Monday 
self.calendar.calendarAppearance.ratioContentMenu = 1.; 
self.calendar.calendarAppearance.menuMonthTextColor = [UIColor whiteColor]; 
self.calendar.calendarAppearance.dayCircleColorSelected = [UIColor blueColor]; 
self.calendar.calendarAppearance.dayTextColorSelected = [UIColor whiteColor]; 

[self.calendar reloadAppearance];  
所以注意好顺序。 

最后日历也提供方法设置日趋： 
[self.calendar setCurrentDate:myDate]; 

下载地址

http://code4app.com/ios/JTCalendar/546184d1933bf0a8518b48c8