uicollection view gzz1109

//

//  ViewController.m

//  UICollection

//

//  Created by Apple on 16/1/8.

//  Copyright © 2016年 YOUSELF. All rights reserved.

//

 

#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)];

//    [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