> Only the methods marked "👍" support IBInspectable / IBDesignable feature. [Have fun with Interface builder](#roll_with_interface_builder) # Setup ## Use Interface Builder 1、 Drag an UIView object to ViewController Scene 2、 Change the `Custom Class` to `FSCalendar`
3、 Link `dataSource` and `delegate` to the ViewController
 4、 Finally, implement `FSCalendarDataSource` and `FSCalendarDelegate` in your `ViewController` ## Or use code ```objc @property (weak , nonatomic) FSCalendar *calendar; ``` ```objc // In loadView(Recommended) or viewDidLoad FSCalendar *calendar = [[FSCalendar alloc] initWithFrame:CGRectMake(0, 0, 320, 300)]; calendar.dataSource = self; calendar.delegate = self; [self.view addSubview:calendar]; self.calendar = calendar; ```
## Or swift * To use `FSCalendar` in swift, you need to [Create Bridge Header](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html) first. ```swift fileprivate weak var calendar: FSCalendar! ``` ```swift // In loadView or viewDidLoad let calendar = FSCalendar(frame: CGRect(x: 0, y: 0, width: 320, height: 300)) calendar.dataSource = self calendar.delegate = self view.addSubview(calendar) self.calendar = calendar ``` > To use **FSCalendar** in Swift3, see `Example-Swift` for details. ## Warning `FSCalendar` ***doesn't*** update frame by itself, Please implement * For ***AutoLayout*** ```objc - (void)calendar:(FSCalendar *)calendar boundingRectWillChange:(CGRect)bounds animated:(BOOL)animated { self.calendarHeightConstraint.constant = CGRectGetHeight(bounds); // Do other updates here [self.view layoutIfNeeded]; } ``` * For ***Manual Layout*** ```objc - (void)calendar:(FSCalendar *)calendar boundingRectWillChange:(CGRect)bounds animated:(BOOL)animated { calendar.frame = (CGRect){calendar.frame.origin,bounds.size}; // Do other updates here } ``` * If you are using ***Masonry*** ```objc - (void)calendar:(FSCalendar *)calendar boundingRectWillChange:(CGRect)bounds animated:(BOOL)animated { [calendar mas_updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(@(bounds.size.height)); // Do other updates }]; [self.view layoutIfNeeded]; } ``` * If you are using ***SnapKit*** ```swift func calendar(_ calendar: FSCalendar, boundingRectWillChange bounds: CGRect, animated: Bool) { calendar.snp.updateConstraints { (make) in make.height.equalTo(bounds.height) // Do other updates } self.view.layoutIfNeeded() } ``` ### Roll with Interface Builder  # Pre-knowledge > In `Swift3`, `NSDate` and `NSDateFormatter` have been renamed to ***Date*** and ***DateFormatter*** , see `Example-Swift` for details. ## How to create NSDate object * By **NSCalendar**. ```objc self.gregorian = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian]; ``` Then: ```objc NSDate *date = [gregorian dateWithEra:1 year:2016 month:9 day:10 hour:0 minute:0 second:0 nanosecond:0]; // 2016-09-10 00:00:00 ``` * Or by **NSDateFormatter** ```objc self.formatter = [[NSDateFormatter alloc] init]; self.formatter.dateFormat = @"yyyy-MM-dd"; ``` Then: ```objc NSDate *date = [self.formatter dateFromString:@"2016-09-10"]; ``` ## How to print out NSDate object * Use **NSDateFormatter** ```objc self.formatter = [[NSDateFormatter alloc] init]; self.formatter.dateFormat = @"yyyy/MM/dd"; ``` ```objc NSString *string = [self.formatter stringFromDate:date]; NSLog(@"Date is %@", string); ``` ## How to manipulate NSDate with NSCalendar ```objc self.gregorian = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian]; ``` * Get component of NSDate ```objc NSInteger era = [self.gregorian component:NSCalendarUnitEra fromDate:date]; NSInteger year = [self.gregorian component:NSCalendarUnitYear fromDate:date]; NSInteger month = [self.gregorian component:NSCalendarUnitMonth fromDate:date]; NSInteger day = [self.gregorian component:NSCalendarUnitDay fromDate:date]; NSInteger hour = [self.gregorian component:NSCalendarUnitHour fromDate:date]; NSInteger minute = [self.gregorian component:NSCalendarUnitMinute fromDate:date]; ... ``` * Get next **month** ```objc NSDate *nextMonth = [self.gregorain dateByAddingUnit:NSCalendarUnitMonth value:1 toDate:date options:0]; ``` * Get next **day** ```objc NSDate *nextDay = [self.gregorain dateByAddingUnit:NSCalendarUnitDay value:1 toDate:date options:0]; ``` * Is date in today/tomorrow/yesterday/weekend ```objc BOOL isToday = [self.gregorian isDateInToday:date]; BOOL isYesterday = [self.gregorian isDateInYesterday:date]; BOOL isTomorrow = [self.gregorian isDateInTomorrow:date]; BOOL isWeekend = [self.gregorian isDateInWeekend:date]; ``` * Compare two dates ```objc BOOL sameDay = [self.gregorian isDate:date1 inSameDayAsDate:date2]; // Yes if the date1 and date2 are in same day [self.gregorian compareDate:date1 toDate:date2 toUnitGranularity:unit]; // compare the era/year/month/day/hour/minute .etc ... // return NSOrderAscending/NSOrderSame/NSOrderDecending BOOL inSameUnit = [self.gregorian isDate:date1 equalToDate:date2 toUnitGranularity:unit]; // if the given unit (era/year/month/day/hour/minute .etc) are the same ``` ## Support this repo * [**★Star**](#) this repo
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## Contact * 微博： [**@WenchaoD**](http://weibo.com/WenchaoD) * Twitter：[**@WenchaoD**](https://twitter.com/WenchaoD) * QQ支持群:
 > If your made a beautiful calendar with this library in your app, please take a screen shot and [@me](https://twitter.com/WenchaoD) in twitter. Your help really means a lot to me!
# License FSCalendar is available under the MIT license. See the LICENSE file for more info. ### [Documentation](http://cocoadocs.org/docsets/FSCalendar/) | [More Usage](https://github.com/WenchaoD/FSCalendar/blob/master/MOREUSAGE.md) | [简书](http://www.jianshu.com/notebooks/4276521/latest)