项目Demo地址：https://github.com/DaLiangWang/WLCollectionView
优势
更加符合MVVM框架
由VM生成CollectionView的显示视图模型，回调给View中直接进行渲染
在项目中可在绝大多数情况下避免数组越界，cell初始化问题等崩溃
快速开发利器小帮手
可无缝接入项目，无需修改已存在Cell的内容，只需添加两个方法
一个数据绑定方法，一个代理绑定方法
使用方式
pod 'WLCollectionView' , '~> 1.0.1'
或者
下载源码中的Class文件下内容拖入项目，相对cocopods导入，可做定制化功能
项目核心源码，相对简单，全部都有注释，并且无依赖性，可拆解使用
核心消息方法转发分类在 NSObject+WLSel.h 中，均有完整注释和保护措施
控制器代码
@interface ViewController ()
@property (nonatomic,strong) WLCollectionView *wlclass_collection_view;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.wlclass_collection_view.frame = self.view.frame;
[self.view addSubview:self.wlclass_collection_view];
[self reload];
}
-(void)reload{
NSMutableArray *array = [NSMutableArray array];
while (array.count < 5) {
WLBaseCollectionViewLayerSection *section = [[WLBaseCollectionViewLayerSection alloc]init];
section.insetForSection = UIEdgeInsetsMake(1, 0, 1, 0);
section.horizontalSection = 0;
section.horizontalCount = 1;
section.horizontalMaxWidth = self.view.frame.size.width;
section.verticalSection = 1;
CGSize itemSize = [section getCellSizeHeight:45];
section.headerItem = [UICollectionReusableView toClass:HeaderCollectionReusableView.class rowData:@{
@"title":[NSString stringWithFormat:@"headerItem-%ld",array.count]
} cellSize:itemSize];
section.footItem = [UICollectionReusableView toClass:FootCollectionReusableView.class rowData:@{
@"title":[NSString stringWithFormat:@"footItem-%ld",array.count]
} cellSize:itemSize];
while (section.item.count < 5) {
ItemCollectionViewCellModel *model = [[ItemCollectionViewCellModel alloc]init];
model.string = [NSString stringWithFormat:@"item-%ld-%ld",array.count,section.item.count];
WLBaseCollectionViewLayerRow *row = [UICollectionViewCell toClass:ItemCollectionViewCell.class rowData:model cellSize:itemSize];
[section.item addObject:row];
}
[array addObject:section];
}
[self.wlclass_collection_view setAllSection:array];
}
#pragma mark -- 懒加载
-(WLCollectionView *)wlclass_collection_view{
if (!_wlclass_collection_view){
_wlclass_collection_view = [WLCollectionView initWithVerticalDelegate:self];
_wlclass_collection_view.backgroundColor = UIColor.blueColor;
}
return _wlclass_collection_view;
}
Cell.h 代码
#import <UIKit/UIKit.h>
@interface ItemCollectionViewCell : UICollectionViewCell
@end
@interface ItemCollectionViewCellModel : NSObject
@property (nonatomic,strong) NSString *string;
@end
Cell.m 代码
#import "ItemCollectionViewCell.h"
#import "WLBaseCollectionViewLayerRow.h"
@interface ItemCollectionViewCell()
@property (strong,nonatomic) UILabel *title_label;
@end
@implementation ItemCollectionViewCell
/** 绑定数据 */
-(void)bind_row_data:(WLBaseCollectionViewLayerRow *)sender{
if ([sender.data isKindOfClass:ItemCollectionViewCellModel.class]){
ItemCollectionViewCellModel *model = sender.data;
NSLog(@"%@", model.string);
self.title_label.text = model.string;
}
}
/** 绑定代理 */
-(void)bind_delegate:(id)sender{
}
- (instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = UIColor.orangeColor;
self.title_label = [[UILabel alloc]initWithFrame:CGRectMake(5, 5, frame.size.width - 10, frame.size.height - 10)];
self.title_label.textAlignment = NSTextAlignmentCenter;
[self addSubview:self.title_label];
}
return self;
}
@end
@implementation ItemCollectionViewCellModel
@end
头视图代码.h
#import <UIKit/UIKit.h>
@interface HeaderCollectionReusableView : UICollectionReusableView
@end
头视图代码.m
#import "HeaderCollectionReusableView.h"
#import "WLBaseCollectionReusableModel.h"
@interface HeaderCollectionReusableView()
@property (strong,nonatomic) UILabel *title_label;
@end
@implementation HeaderCollectionReusableView
/** 绑定数据 */
-(void)bind_row_data:(WLBaseCollectionReusableModel *)sender{
if ([sender.data isKindOfClass:NSDictionary.class]){
NSDictionary *model = sender.data;
self.title_label.text = model[@"title"];
}
}
/** 绑定代理 */
-(void)bind_delegate:(id)sender{
}
- (instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = UIColor.redColor;
self.title_label = [[UILabel alloc]initWithFrame:CGRectMake(5, 5, frame.size.width - 10, frame.size.height - 10)];
self.title_label.textAlignment = NSTextAlignmentCenter;
[self addSubview:self.title_label];
}
return self;
}
@end
脚视图代码.h
#import <UIKit/UIKit.h>
@interface FootCollectionReusableView : UICollectionReusableView
@end
脚视图代码.m
#import "FootCollectionReusableView.h"
#import "WLBaseCollectionReusableModel.h"
@interface FootCollectionReusableView()
@property (strong,nonatomic) UILabel *title_label;
@end
@implementation FootCollectionReusableView
/** 绑定数据 */
-(void)bind_row_data:(WLBaseCollectionReusableModel *)sender{
if ([sender.data isKindOfClass:NSDictionary.class]){
NSDictionary *model = sender.data;
self.title_label.text = model[@"title"];
}
}
/** 绑定代理 */
-(void)bind_delegate:(id)sender{
}
- (instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = UIColor.greenColor;
self.title_label = [[UILabel alloc]initWithFrame:CGRectMake(5, 5, frame.size.width - 10, frame.size.height - 10)];
self.title_label.textAlignment = NSTextAlignmentCenter;
[self addSubview:self.title_label];
}
return self;
}
@end
目前为止公开的代理，代理均可不实现
@protocol WLCollectionDelegate <NSObject>
@required
@optional
//cell创建
-(UICollectionViewCell *)wl_collectionView:(UICollectionView *)collectionView
layerModel:(WLBaseCollectionViewLayerModel *)model
cellIndexPath:(NSIndexPath *)indexPath;
//头脚视图创建
- (UICollectionReusableView *)wl_collectionView:(UICollectionView *)collectionView
viewForSupplementaryElementOfKind:(NSString *)kind
layersectionModel:(id)section
atIndexPath:(NSIndexPath *)indexPath;
//点击cell的响应
- (void)wl_collectionView:(UICollectionView *)collectionView
layerModel:(WLBaseCollectionViewLayerModel *)layerModel
didIndexPath:(NSIndexPath *)indexPath;
- (void)wl_collectionView:(UICollectionView *)collectionView
layerModel:(WLBaseCollectionViewLayerModel *)layerModel
layerRowData:(id)rowData
didIndexPath:(NSIndexPath *)indexPath;
// 结束拖拽时触发
- (void)wl_scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;
// 换页
- (void)wl_changeDragging:(UIScrollView *)scrollView pageNumber:(NSInteger)pageNumber;
// 滚动就会触发
- (void)wl_scrollViewDidScroll:(UIScrollView *)scrollView;
#pragma mark --缺省页
/** 自定义显示视图 */
- (UIView *)wl_customViewForWLEmptyDataSet;
/** 强制显示空数据集：当项目数量大于0时，请求代理是否仍应显示空数据集。（默认值为NO） */
- (BOOL)wl_emptyDataSetShouldBeForcedToDisplay;
/** 点击刷新按钮 */
- (void )wl_clickReloadButton;
@end
未来功能
还有未完善的UITableView，iCarousel等组件，等待完善后在添加
因为平常用的相对较少，功能还不够完善，等完善后在添加
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