uicollection view gzz1109

// ViewController.m

// UICollection

// Created by Apple on 16/1/8.

#import "ViewController.h"

#import "MyCell.h"

#import "MyHeaderView.h"

#import "MyFooterView.h"

@interface ViewController ()<UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout>

@property(strong,nonatomic)UICollectionView *myCollectionV;

@end

//设置标识

static NSString *indentify = @"indentify";

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

self.view.backgroundColor = [UIColor whiteColor];

//创建视图

[self addTheCollectionView];

}

//创建视图

-(void)addTheCollectionView{

//=======================1===========================

//创建一个块状表格布局对象

UICollectionViewFlowLayout *flowL = [UICollectionViewFlowLayout new];

//格子的大小 (长，高)

// flowL.itemSize =CGSizeMake(100,130);

//横向最小距离

// flowL.minimumInteritemSpacing =1.f;

// flowL.minimumLineSpacing=60.f;//代表的是纵向的空间间隔

//设置，上／左／下／右边距空间间隔数是多少

// flowL.sectionInset =UIEdgeInsetsMake(10,0, 10, 0);

flowL.minimumInteritemSpacing = 0;

flowL.minimumLineSpacing = 0; //上下的间距可以设置0看下效果

//如果有多个区就可以拉动

[flowL setScrollDirection:UICollectionViewScrollDirectionVertical];

//可以左右拉动

// [flowL setScrollDirection:UICollectionViewScrollDirectionHorizontal];

#pragma mark -- 头尾部大小设置

//设置头部并给定大小

// [flowL setHeaderReferenceSize:CGSizeMake(_myCollectionV.frame.size.width,50)];

// //设置尾部并给定大小

// [flowL setFooterReferenceSize:CGSizeMake(_myCollectionV.frame.size.width,0)];

UIView *momentView = [[UIView alloc]initWithFrame:CGRectMake(30, 65+20, self.view.frame.size.width-60,400)];

momentView.backgroundColor = [UIColor orangeColor];

[self.view addSubview:momentView];

//创建一个UICollectionView

// _myCollectionV = [[UICollectionView alloc]initWithFrame:CGRectMake(0,64+50+50, self.view.frame.size.width,400)collectionViewLayout:flowL];

_myCollectionV = [[UICollectionView alloc]initWithFrame:CGRectMake (0, 20, self.view.frame.size.width-60, 250) collectionViewLayout:flowL];

//设置代理为当前控制器

_myCollectionV.delegate =self;

_myCollectionV.dataSource =self;

//设置背景

_myCollectionV.backgroundColor =[UIColor yellowColor];

#pragma mark -- 注册单元格

// [_myCollectionV registerClass:[MyCell class] forCellWithReuseIdentifier:indentify];

[_myCollectionV registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:indentify];

#pragma mark -- 注册头部视图

[_myCollectionV registerClass:[MyHeaderView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView"];

#pragma mark -- 注册尾部视图

[_myCollectionV registerClass:[MyFooterView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"FooterView"];

[momentView addSubview:_myCollectionV];

}

#pragma mark --UICollectionView dataSource

//有多少个Section

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView

{

return 1;

}

//每个section有多少个元素

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

{

return 12;

}

//每个单元格的数据

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

{

UICollectionViewCell *cell = (UICollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:indentify forIndexPath:indexPath];

cell.backgroundColor = [UIColor purpleColor];

[cell sizeToFit];

[cell.contentView addSubview:[self cellIndex:(int)indexPath.item]];

return cell;

// //初始化每个单元格

// MyCell *cell = (MyCell *)[collectionView dequeueReusableCellWithReuseIdentifier:indentify forIndexPath:indexPath];

// //给单元格上的元素赋值

// cell.imageV.image = [UIImage imageNamed:@"LOGO80-80"];

// cell.titleLab.text = [NSString stringWithFormat:@"{%ld-%ld}",indexPath.section,indexPath.row];

// return cell;

}

-(UIView *)cellIndex:(NSInteger)index{

CGFloat widthD = ([[UIScreen mainScreen] bounds].size.width-60)/3;

UIView *viewdd = [[UIView alloc]initWithFrame:CGRectMake(1, 1, widthD-2, 28)];

viewdd.backgroundColor = [UIColor whiteColor];

return viewdd;

}

//每个cell的大小

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath

{

CGFloat widthD = ([[UIScreen mainScreen] bounds].size.width-60)/3;

return CGSizeMake(widthD, 30);

}

//设置头尾部内容

-(UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath

{

UICollectionReusableView *reusableView =nil;

if (kind ==UICollectionElementKindSectionHeader) {

//定制头部视图的内容

MyHeaderView *headerV = (MyHeaderView *)[collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView"forIndexPath:indexPath];

headerV.titleLab.text =@"头部视图";

reusableView = headerV;

}

if (kind ==UICollectionElementKindSectionFooter){

MyFooterView *footerV = (MyFooterView *)[collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"FooterView"forIndexPath:indexPath];

footerV.titleLab.text =@"尾部视图";

reusableView = footerV;

}

return reusableView;

}

//点击单元格

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath

{

NSLog(@"%ld",indexPath.row);

}

-(CGSize)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section

{

if(section == 0)

{

// CGSize size = {SCREENW, 0};

// return CGSizeMake(self.view.frame.size.width, -30);

return CGSizeMake(self.view.frame.size.width, 60);

}

else

{

CGSize size = {self.view.frame.size.width, 50};

return size;

}

////距边界缩放大小

-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section

{

// return UIEdgeInsetsMake(-30, 10, 1, 10);//分别为上、左、下、右

return UIEdgeInsetsMake(-30, 0 , 0, 0);//分别为上、左、下、右

}

@end