#import"ViewC.h"
#import"CLCollectionViewCell.h"
#import"HeadView.h"
#import"FootView.h"
staticNSString *cellIdentifier = @"cell";
staticNSString *headerIdentifier = @"header";
staticNSString *footerIdentifier = @"footer";
@interfaceViewC ()<uicollectionviewdatasource, uicollectionviewdelegate,=""uicollectionviewdelegateflowlayout="">
@end
@implementationViewC
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [superinitWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if(self) {
// Custom initialization
}
returnself;
}
- (void)viewDidLoad
{
[superviewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor lightGrayColor];
UICollectionViewFlowLayout *flowLayout= [[UICollectionViewFlowLayout alloc] init];
flowLayout.scrollDirection = UICollectionViewScrollDirectionVertical;//滚动方向
flowLayout.minimumLineSpacing =10.0;//行间距(最小值)
flowLayout.minimumInteritemSpacing =50.0;//item间距(最小值)
flowLayout.itemSize = CGSizeMake(50,50);//item的大小
flowLayout.sectionInset = UIEdgeInsetsMake(10,10,10,10);//设置section的边距
flowLayout.headerReferenceSize = CGSizeMake(320,20);
flowLayout.footerReferenceSize = CGSizeMake(320,20);
//第二个参数是cell的布局
UICollectionView *collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0,0,320,568) collectionViewLayout:flowLayout];
[flowLayout release];
collectionView.dataSource = self;
collectionView.delegate = self;
collectionView.backgroundColor = [UIColor orangeColor];
//1 注册复用cell(cell的类型和标识符)(可以注册多个复用cell, 一定要保证重用标示符是不一样的)注册到了collectionView的复用池里
[collectionView registerClass:[CLCollectionViewCellclass] forCellWithReuseIdentifier:cellIdentifier];
//第一个参数:返回的View类型
//第二个参数:设置View的种类(header, footer)
//第三个参数:设置重用标识符
[collectionView registerClass:[HeadViewclass] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:headerIdentifier];
[collectionView registerClass:[FootViewclass] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:footerIdentifier];
[self.view addSubview:collectionView];
[collectionView release];
}
- (void)didReceiveMemoryWarning
{
[superdidReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#PRagma mark - UICollectionViewDataSource
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return10;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return10;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
//2 从复用池中找cell(1:cell的标示符 2:indexPath决定系统用不用再给你创建cell, 不用创建的话, 就直接使用之前的cell)
CLCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
cell.backgroundColor = [UIColor yellowColor];
cell.textLabel.text = [NSString stringWithFormat:@"%ld", (long)indexPath.row];
returncell;
}
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
if(kind == UICollectionElementKindSectionHeader) {
HeadView *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:headerIdentifier forIndexPath:indexPath];
headerView.textLabel.text = @"让我组成头部!";
headerView.textLabel.textAlignment = NSTextAlignmentCenter;
headerView.textLabel.textColor = [UIColor whiteColor];
returnheaderView;
}
FootView *footerView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:footerIdentifier forIndexPath:indexPath];
footerView.textLabel.text = @"让我组成尾部!";
footerView.textLabel.textAlignment = NSTextAlignmentCenter;
footerView.textLabel.textColor = [UIColor whiteColor];
returnfooterView;
}
#pragma mark - UICollectionViewDelegate
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"%d %d", indexPath.section, indexPath.row);
}
#pragma mark - UICollectionViewDelegateFlowLayout
/*
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
}
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section
{
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section
{
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section
{
}
*/
/*
#pragma mark - Navigation
// In a storyboard-basedapplication, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end