JTCalendar

JTCalendar is an easily customizable calendar control for iOS.

Installation

With CocoaPods, add this line to your Podfile.

pod 'JTCalendar', '~> 1.1'

Screenshots

Usage

Basic usage

You have to create two views in your UIViewController:

• The first view is JTCalendarMenuView and it represents the month names.
• The second view is JTCalendarContentView and it represents the calendar itself.

Your UIViewController must implement JTCalendarDataSource

#import <UIKit/UIKit.h>

#import <JTCalendar.h>

@interface ViewController : UIViewController<JTCalendarDataSource>

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

@property (strong, nonatomic) JTCalendar *calendar;

@end

JTCalendar is used to coordinate calendarMenuView and calendarContentView.

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
        
    self.calendar = [JTCalendar new];
    
    [self.calendar setMenuMonthsView:self.calendarMenuView];
    [self.calendar setContentView:self.calendarContentView];
    [self.calendar setDataSource:self];
    
    [self.calendar reloadData];
}

- (void)viewDidLayoutSubviews
{
    [self.calendar repositionViews];
}

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

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

@end

For more information about organizing the events by date, see the Example project.

Switch to week view

If you want see just one week at a time, you have to set the isWeekMode to YES and reload the calendar.

self.calendar.calendarAppearance.isWeekMode = YES;
[self.calendar reloadAppearance];

WARNING

When you change the mode, it doesn't change the height of calendarContentView, you have to do it yourself. See the Example project for more details.

Customize the design

You have a lot of options available to customize the design. Check the JTCalendarAppearance.h file to see all the options.

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];

Recommendation

The call to reloadAppearance is expensive. It is called by setMenuMonthsView and setContentView.

For a better performance, define the appearance just after the JTCalendar initialization.

Bad example:

self.calendar = [JTCalendar new];
    
[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]; // You have to call reloadAppearance

Good example:

self.calendar = [JTCalendar new];

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];

// You don't have to call reloadAppearance

You may also want to open your calendar on a specific date. By default, it is [NSDate date].

[self.calendar setCurrentDate:myDate];

WARNING

The currentDate is used for indicate the month and the week visible. When you change the currentDate, the calendar moves to the correct week and month.

The currentDateSelected is the last date touched by an user. Currently, the only way to set the currentDateSelected is by calling

[NSNotificationCenter defaultCenter] postNotificationName:@"kJTCalendarDaySelected" object:date];

Data cache

By default, a cache is activated, so you don't have to call calendarHaveEvent intensively. To clean the cache, you just have to call reloadData.

If you don't want to use this cache you can disable it with:

self.calendar.calendarAppearance.useCacheSystem = NO;

Requirements

• iOS 7 or higher
• Automatic Reference Counting (ARC)

Author

• Jonathan Tribouharet (@johntribouharet)

License

JTCalendar is released under the MIT license. See the LICENSE file for more info.