iOS collectionView使用

//布局    UICollectionViewFlowLayout *flowRight = [[UICollectionViewFlowLayout alloc] init];    [flowRight setItemSize:CGSizeMake(250, 227)];//(915-102)/3 = 271     650/2 = 325    [flowRight setMinimumInteritemSpacing:1];    [flowRight setMinimumLineSpacing:1];    [flowRight setSectionInset:UIEdgeInsetsMake(5, 8, 0, 0)];    [flowRight setScrollDirection:UICollectionViewScrollDirectionVertical];//collectView collectViewRight = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 15, 760, 230*3) collectionViewLayout:flowRight];    collectViewRight.dataSource = self;    collectViewRight.delegate = self;//    [collectViewRight setContentSize:CGSizeMake(760, 230*4)];    [collectViewRight setBackgroundColor:[UIColor whiteColor]];    [collectViewRight registerClass:[fenleiDetailRightCell class] forCellWithReuseIdentifier:@"fenleiDetailRightCell"];    [rightView addSubview:collectViewRight];    [flowRight release];    [collectViewRight release];//collect协议-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{     if (collectionView ==collectViewRight) {              static NSString *cellId = @"fenleiDetailRightCell";         fenleiDetailRightCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellId forIndexPath:indexPath];                  cell.title.text = @"标题标题";         cell.imageView.image = [UIImage imageNamed:@"ipad_bg_02"];         [cell.bgView setImage:[UIImage imageNamed:@"ipad_bg_03"]];         return cell;     }else     {         static NSString *cellId = @"fenleiDetailLeftCell";         fenleiDetailLeftCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellId forIndexPath:indexPath];                  cell.title.text = @"标题标题";         cell.imageView.image = [UIImage imageNamed:@"ipad_bg_02"];         [cell.bgView setImage:[UIImage imageNamed:@"ipad_bg_03"]];         return cell;     }   }-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{    if (collectionView ==collectViewRight) {        return 11;    }    else    {       return 12;    }    }

CELL

#import "fenleiDetailRightCell.h"@implementation fenleiDetailRightCell- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        self.bgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 240, 220)];        self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 12, 220, 170)];        self.title = [[UILabel alloc] initWithFrame:CGRectMake(10, 180, 220 ,30)];        [self.title setFont:[UIFont boldSystemFontOfSize:18]];        [self.title setTextAlignment:NSTextAlignmentCenter];        [self.title setBackgroundColor:[UIColor clearColor]];        [self.bgView addSubview:self.imageView];        [self.bgView addSubview:self.title];        [self addSubview:self.bgView];        [_imageView release];        [_title release];    }    return self;}/*// Only override drawRect: if you perform custom drawing.// An empty implementation adversely affects performance during animation.- (void)drawRect:(CGRect)rect{    // Drawing code}*/-(void)dealloc{    [_title release];    [_bgView release];    [_imageView release];    [super dealloc];}@end

根据cell里面和layout修改间距