baseCollectionViewController

#import <UIKit/UIKit.h> #import 'BaseViewController.h' @interface BaseCollectionViewController : BaseViewController //页数索引 @property (nonatomic,assign) NSInteger pageNO; //每页显示多少条 @property (nonatomic,assign) NSInteger pageSize; //数据源 @property (nonatomic,strong) NSMutableArray *dataArray; //开启头部刷新 @property (nonatomic,assign) BOOL isOpenHeaderRefresh; //开启脚部刷新 @property (nonatomic,assign) BOOL isOpenFooterRefresh; @property(strong,nonatomic)UICollectionView * collectionView; @property(strong,nonatomic)UICollectionViewFlowLayout *flowLayout; //头部刷新请求 (子类需要重写) - (void)headerRequestWithData; - (void)footerRequestWithData; @end #import 'BaseCollectionViewController.h' #define MJRandomColor [UIColor colorWithRed:arc4random_uniform(255)/255.0 green:arc4random_uniform(255)/255.0 blue:arc4random_uniform(255)/255.0 alpha:1] @interface BaseCollectionViewController ()<UICollectionViewDelegate,UICollectionViewDataSource> @end @implementation BaseCollectionViewController static NSString * reuseIdentifier = @'hehe'; - (UICollectionViewFlowLayout *)flowLayout{ if (!_flowLayout) { UICollectionViewFlowLayout * flowLayout = [[UICollectionViewFlowLayout alloc]init]; //设置流水布局的大小 CGFloat cellWith =([UIScreen mainScreen].bounds.size.width)/3.0; flowLayout.itemSize = CGSizeMake(cellWith , cellWith); flowLayout.minimumInteritemSpacing = 0; flowLayout.minimumLineSpacing = 0; _flowLayout = flowLayout; } return _flowLayout; } - (UICollectionView *)collectionView{ if (!_collectionView) { UICollectionView * collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight) collectionViewLayout:self.flowLayout]; /** *默认是YES ,设置为NO之后就不在滚动,不会出现上下拉刷新 */ collectionView.scrollEnabled = YES; collectionView.translatesAutoresizingMaskIntoConstraints = YES; [self.view addSubview:collectionView]; collectionView.collectionViewLayout = self.flowLayout; collectionView.delegate =self; collectionView.dataSource =self; collectionView.backgroundColor = [UIColor clearColor]; [collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier]; _collectionView = collectionView; } return _collectionView; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.pageNO = 1; self.pageSize = 15; [self.view addSubview:self.collectionView]; } - (void)setIsOpenHeaderRefresh:(BOOL)isOpenHeaderRefresh{ if (_isOpenHeaderRefresh != isOpenHeaderRefresh) { _isOpenHeaderRefresh = isOpenHeaderRefresh; WeakSelf(self); if (isOpenHeaderRefresh) { self.collectionView.mj_header= [MJRefreshNormalHeader headerWithRefreshingBlock:^{ // 增加5条假数据 weakSelf.pageNO = 1; [weakSelf headerRequestWithData]; // 结束刷新 [weakSelf.collectionView.mj_header endRefreshing]; }]; [self.collectionView.mj_header beginRefreshing]; } } } //下拉刷新 - (void)setIsOpenFooterRefresh:(BOOL)isOpenFooterRefresh{ if (_isOpenFooterRefresh != isOpenFooterRefresh) { _isOpenFooterRefresh = isOpenFooterRefresh; WeakSelf(self); if (isOpenFooterRefresh) { // 上拉刷新 self.collectionView.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{ // 增加5条假数据 weakSelf.pageNO ++; [weakSelf footerRequestWithData]; // 结束刷新 [weakSelf.collectionView.mj_footer endRefreshing]; }]; } } } //头部刷新请求 (子类需要重写) - (void)headerRequestWithData{ } //脚部刷新 - (void)footerRequestWithData{ } - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ return self.dataArray.count; } - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { UICollectionViewCell *cell =[collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath]; cell.contentView.backgroundColor = self.dataArray[indexPath.row]; return cell; } //- (UIEdgeInsets )collectionView:( UICollectionView *)collectionView layout:( UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:( NSInteger )section // //{ // return UIEdgeInsetsMake (10,10,0,10); //} - (NSMutableArray *)dataArray{ if (!_dataArray) { _dataArray = [NSMutableArray array]; } return _dataArray; } @end LHExtions

Hello iOS_Hy根据MJRefresh 再度封装CollectionViewController 和tableViewController 也有封装好的viewController 大家可以直接用 里面的PCH也不错哦 还有网络加载工具的二次封装.