iOS 简单日历制作

#import"ViewController.h"

#import"CollectionViewCell.h"

#define screenSize [UIScreen mainScreen].bounds.size

@interfaceViewController()<UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout>

@property(nonatomic,strong)UICollectionView*collectionView;

@property(nonatomic,strong)NSArray*weekdayArray;

@property(nonatomic,strong)NSDate*date;

@property(nonatomic,strong)NSDate*todayDate;

@property(nonatomic,assign)NSIntegermonthDay;

@property(nonatomic,assign)NSIntegermonth;

@property(nonatomic,assign)NSIntegeryear;

@property(nonatomic,assign)NSIntegerfirstWeekdayInThisMonth;

@property(nonatomic,assign)NSIntegertotaldaysInMonth;

@end

@implementationViewController

- (void)viewDidLoad {

[superviewDidLoad];

UICollectionViewFlowLayout*flowLayout = [[UICollectionViewFlowLayoutalloc]init];

flowLayout.itemSize=CGSizeMake(screenSize.width/7,screenSize.height/7);

flowLayout.minimumInteritemSpacing=0;

flowLayout.minimumLineSpacing=0;

flowLayout.sectionInset=UIEdgeInsetsMake(0,0,0,0);

self.collectionView= [[UICollectionViewalloc]initWithFrame:CGRectMake(0,50,screenSize.width,screenSize.height-50)collectionViewLayout:flowLayout];

[self.collectionViewregisterNib:[UINibnibWithNibName:@"CollectionViewCell"bundle:nil]forCellWithReuseIdentifier:@"cell"];

self.collectionView.delegate=self;

self.collectionView.dataSource=self;

self.collectionView.backgroundColor= [UIColorwhiteColor];

[self.viewaddSubview:self.collectionView];

self.weekdayArray=@[@"日",@"一",@"二",@"三",@"四",@"五",@"六"];

self.date= [NSDatedate];

}

#pragma日历的方法

- (void)setDate:(NSDate*)date {

self.todayDate= date;

NSDateComponents*dateComp = [[NSCalendarcurrentCalendar]components:(NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay)fromDate:date];

NSCalendar*calendar = [NSCalendarcurrentCalendar];

calendar.firstWeekday=1;//1.Sun. 2.Mon. 3.Thes. 4.Wed. 5.Thur. 6.Fri. 7.Sat.

dateComp.day=1;

NSDate*firstDayOfMonthDate = [calendardateFromComponents:dateComp];

NSUIntegerfirstWeekday = [calendarordinalityOfUnit:NSCalendarUnitWeekdayinUnit:NSCalendarUnitWeekOfMonthforDate:firstDayOfMonthDate];

self.firstWeekdayInThisMonth= firstWeekday -1;

NSRangedaysInMonth = [calendarrangeOfUnit:NSCalendarUnitDayinUnit:NSCalendarUnitMonthforDate:date];

self.totaldaysInMonth= daysInMonth.length;

[self.collectionViewreloadData];

}

#pragma collectionView的方法

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView*)collectionView {

return2;

}

- (NSInteger)collectionView:(UICollectionView*)collectionView numberOfItemsInSection:(NSInteger)section {

if(section ==0) {

returnself.weekdayArray.count;

}else{

return42;

}

}

- (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView cellForItemAtIndexPath:(NSIndexPath*)indexPath {

CollectionViewCell*cell = [collectionViewdequeueReusableCellWithReuseIdentifier:@"cell"forIndexPath:indexPath];

if(indexPath.section==0) {

cell.textLabel.text=self.weekdayArray[indexPath.row];

}else{

if(indexPath.row

cell.textLabel.text=@"";

[cellsetUserInteractionEnabled:NO];

}elseif(indexPath.row>self.totaldaysInMonth+self.firstWeekdayInThisMonth-1) {

cell.textLabel.text=@"";

[cellsetUserInteractionEnabled:NO];

}else{

[cell.textLabelsetText:[NSStringstringWithFormat:@"%ld",(long)indexPath.row-self.firstWeekdayInThisMonth+1]];

}

}

returncell;

}

- (IBAction)priviousBtn:(id)sender {

NSDateComponents*dateComp = [NSDateComponentsnew];

dateComp.month= -1;

NSDate*newDate = [[NSCalendarcurrentCalendar]dateByAddingComponents:dateComptoDate:self.todayDateoptions:0];

NSLog(@"%@",newDate);

[UIViewtransitionWithView:self.viewduration:0.5options:UIViewAnimationOptionTransitionCurlUpanimations:^{

self.date= newDate;

}completion:nil];

}

- (IBAction)nextBtn:(id)sender {

NSDateComponents*dateComp = [NSDateComponentsnew];

dateComp.month=1;

NSDate*newDate = [[NSCalendarcurrentCalendar]dateByAddingComponents:dateComptoDate:self.todayDateoptions:0];

NSLog(@"%@",newDate);

[UIViewtransitionWithView:self.viewduration:0.5options:UIViewAnimationOptionTransitionCurlDownanimations:^{

self.date= newDate;

}completion:nil];

}

- (void)didReceiveMemoryWarning {

[superdidReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

Demo下载：https://pan.baidu.com/s/1jHXVe9C