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封装Button ,封装UITableView,封装UICollectionView:

1.实现Button的创建和点击事件不用分开操作处理;

2.实现UITableView的代理数据源方法不用分开操作;

3.实现UICollectionView的代理数据源方法不用分开操作;

实现如下 :

Button的实现 :

- (void)viewDidLoad{

    [super viewDidLoad];
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
ZH_Button *button = [[ZH_Button alloc]initWithFrame:CGRectMake(, , , ) normalImageString:nil highlightImageString:nil];
[button setTitle:@"哈哈" forState:UIControlStateNormal];
button.backgroundColor = [UIColor redColor];
[button addActionforControlEvents:UIControlEventTouchUpInside respond:^{ NSLog(@"我被点了");
}];
[self.view addSubview:button]; }

UITableView的实现:

- (void)viewDidLoad {
[super viewDidLoad]; [self loadData];
[self createTableView];
} - (void)loadData{ NSArray *dataArray = @[@"思思1",@"思思2",@"思思3",@"思思4",@"思思5",@"思思6",@"思思7",@"思思8",@"思思9",@"思思10",@"思思11"];
self.dataSources = [dataArray mutableCopy];
} - (void)createTableView{ _myTableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];
[self.view addSubview:self.myTableView];
// 注册cell
[_myTableView registerClass:[MyCell class] forCellReuseIdentifier:identifier]; self.dataArray = [[ArrayDataSource alloc]initWithItems:self.dataSources cellIdentifier:identifier configureCellBlock:^(MyCell *cell, id item) { cell.title = item; } itemHeight:]; self.myTableView.dataSource = self.dataArray;
self.myTableView.delegate = self.dataArray; __weak typeof(self)weakSelf = self; self.dataArray.didSelect = ^ (NSIndexPath *indexPath){ NSString *title = weakSelf.dataSources[indexPath.row];
NSLog(@"选择的行:indexPath = %@,标题为 : %@",indexPath,title); };
self.dataArray.didDeselectRow = ^ (NSIndexPath *indexPath){ NSLog(@"取消选择行: %@",indexPath);
};
self.dataArray.didHighlight = ^ (NSIndexPath *indexPath){ NSLog(@"高亮行: %@",indexPath);
}; }

UICollectionView的实现 :

- (void)viewDidLoad{

    self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
[super viewDidLoad];
[self loadData];
[self createCollectionView];
} #pragma mark - createCollectionView - (void)createCollectionView{ UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
layout.itemSize = CGSizeMake(, );
self.myCollectionView = [[UICollectionView alloc]initWithFrame:self.view.bounds collectionViewLayout:layout];
self.myCollectionView.backgroundColor = [UIColor clearColor]; // 注册cell
[self.myCollectionView registerClass:[MyCollectionCell class] forCellWithReuseIdentifier:identifier]; // 设置数据源,代理
self.dataSourceArray = [[CollectionViewDataSource alloc]initWithItems:self.dataArray cellIdentifier:identifier configureCellBlock:^(MyCollectionCell *cell, id item) { cell.title = item; } itemSize:CGSizeMake(, )]; self.myCollectionView.dataSource = self.dataSourceArray;
self.myCollectionView.delegate = self.dataSourceArray;
[self.view addSubview:self.myCollectionView]; __weak typeof(self) weakSelf = self; self.dataSourceArray.didSelect = ^ (NSIndexPath *indexPath){ NSString *title = weakSelf.dataArray[indexPath.row];
NSLog(@"选择的item:indexPath = %@,标题为 : %@",indexPath,title); };
self.dataSourceArray.didDeselectRow = ^ (NSIndexPath *indexPath){ NSLog(@"取消选择item: %@",indexPath);
};
self.dataSourceArray.didHighlight = ^ (NSIndexPath *indexPath){ NSLog(@"高亮item: %@",indexPath);
}; } - (void)loadData{ NSArray *dataArray = @[@"思思1",@"思思2",@"思思3",@"思思4",@"思思5",@"思思6",@"思思7",@"思思8",@"思思9",@"思思10",@"思思11"];
self.dataArray = dataArray;
}

具体的中间的封装:

1.Button的封装:

typedef  void(^DGCompletionHandler)(void);
#import <UIKit/UIKit.h> @interface ZH_Button : UIButton // 按钮触发
- (void)addActionforControlEvents:(UIControlEvents)controlEvents respond:(DGCompletionHandler)completion; // 初始化
-(instancetype)initWithFrame:(CGRect)frame normalImageString:(NSString *)normalImageString highlightImageString:(NSString *)highlightImageString;
#import "ZH_Button.h"
#import <objc/runtime.h>
static void *BuClickKey = @"BuClickKey";
@implementation ZH_Button
-(instancetype)initWithFrame:(CGRect)frame normalImageString:(NSString *)normalImageString highlightImageString:(NSString *)highlightImageString{
if (self = [super initWithFrame:frame]) {
self = [ZH_Button buttonWithType:UIButtonTypeCustom];
self.frame = frame;
if (normalImageString) {
[self setImage:[UIImage imageNamed:normalImageString] forState:UIControlStateNormal];
}
if (highlightImageString) {
[self setImage:[UIImage imageNamed:highlightImageString] forState:UIControlStateHighlighted];
} }
return self;
}
- (void)addActionforControlEvents:(UIControlEvents)controlEvents respond:(DGCompletionHandler)completion{ [self addTarget:self action:@selector(didClickBU) forControlEvents:controlEvents]; void (^block)(void) = ^{ completion(); }; objc_setAssociatedObject(self, BuClickKey, block, OBJC_ASSOCIATION_COPY);
} -(void)didClickBU{
void (^block)(void) = objc_getAssociatedObject(self, BuClickKey);
block();
}

2.UITableView的封装:

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h> // 导入ArrayDataSource记得要导入UIKit框架,否则可能报错哟!!! typedef void (^shouldHighlight)(NSIndexPath*);
typedef void (^didSelect)(NSIndexPath *indexPath);
typedef void (^didHighlight)(NSIndexPath *indexPath);
typedef void (^didDeselectRow)(NSIndexPath *indexPath);
typedef void (^TableViewCellConfigureBlock)(id cell, id item); @interface ArrayDataSource : NSObject <UITableViewDataSource,UITableViewDelegate>
@property(nonatomic,copy)didSelect didSelect;
@property(nonatomic,copy)didHighlight didHighlight;
@property(nonatomic,strong)shouldHighlight shouldHighlight;
@property(nonatomic,strong)didDeselectRow didDeselectRow; - (id)initWithItems:(NSArray *)anItems
cellIdentifier:(NSString *)aCellIdentifier
configureCellBlock:(TableViewCellConfigureBlock)aConfigureCellBlock
itemHeight:(float)itemHeight;
- (id)itemAtIndexPath:(NSIndexPath *)indexPath; @end
#import "ArrayDataSource.h"

@interface ArrayDataSource ()

@property (nonatomic, strong) NSArray *items;
@property (nonatomic, copy) NSString *cellIdentifier;
@property(nonatomic, assign)float itemHeight; @property (nonatomic, copy) TableViewCellConfigureBlock configureCellBlock; @end @implementation ArrayDataSource #pragma mark - Init - (id)init
{
return nil;
} - (id)initWithItems:(NSArray *)anItems
cellIdentifier:(NSString *)aCellIdentifier
configureCellBlock:(TableViewCellConfigureBlock)aConfigureCellBlock itemHeight:(float)itemHeight
{
self = [super init];
if (self) {
self.items = anItems;
self.cellIdentifier = aCellIdentifier;
self.configureCellBlock = [aConfigureCellBlock copy];
self.itemHeight = itemHeight;
}
return self;
} - (id)itemAtIndexPath:(NSIndexPath *)indexPath
{
return self.items[(NSUInteger) indexPath.row];
} #pragma mark UITableView Delegate -(void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath{
if (self.didHighlight) {
self.didHighlight(indexPath);
} }
-(BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath{
if (self.shouldHighlight) {
self.shouldHighlight(indexPath);
} return YES;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return self.itemHeight;
} -(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{ if (self.didDeselectRow) {
self.didDeselectRow(indexPath);
} } -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if (self.didSelect) {
self.didSelect(indexPath);
}
} #pragma mark - UITableView DataSource - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (self.items.count == ) {
NSLog(@"什么鬼");
}
return self.items.count;
} - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:self.cellIdentifier];
if (!cell) {
cell = [tableView dequeueReusableCellWithIdentifier:self.cellIdentifier forIndexPath:indexPath];
}
id item = [self itemAtIndexPath:indexPath];
if (self.configureCellBlock) {
self.configureCellBlock(cell, item);
}
return cell;
}

3.UICollectionView的封装:

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h> /** 数据源,代理回调block*/ typedef void (^shouldHighlight)(NSIndexPath*);
typedef void (^didSelect)(NSIndexPath *indexPath);
typedef void (^didHighlight)(NSIndexPath *indexPath);
typedef void (^didDeselectRow)(NSIndexPath *indexPath);
typedef void (^CollectionViewCellConfigureBlock)(id cell, id item); @interface CollectionViewDataSource : NSObject<UICollectionViewDelegate,UICollectionViewDataSource> @property(nonatomic,copy)didSelect didSelect;
@property(nonatomic,copy)didHighlight didHighlight;
@property(nonatomic,strong)shouldHighlight shouldHighlight;
@property(nonatomic,strong)didDeselectRow didDeselectRow; // 初始化方法
- (id)initWithItems:(NSArray *)anItems
cellIdentifier:(NSString *)aCellIdentifier
configureCellBlock:(CollectionViewCellConfigureBlock)aConfigureCellBlock
itemSize:(CGSize)itemSize; // 根据indexPath取得对应的item
- (id)itemAtIndexPath:(NSIndexPath *)indexPath; @end
#import "CollectionViewDataSource.h"

@interface CollectionViewDataSource ()

@property (nonatomic, strong) NSArray *items;
@property (nonatomic, copy) NSString *cellIdentifier;
@property(nonatomic,assign)CGSize itemSize; @property (nonatomic, copy) CollectionViewCellConfigureBlock configureCellBlock; @end @implementation CollectionViewDataSource #pragma mark - Init - (instancetype)init{ return nil;
} - (id)initWithItems:(NSArray *)anItems
cellIdentifier:(NSString *)aCellIdentifier
configureCellBlock:(CollectionViewCellConfigureBlock)aConfigureCellBlock
itemSize:(CGSize)itemSize
{
self = [super init];
if (self) {
self.items = anItems;
self.cellIdentifier = aCellIdentifier;
self.configureCellBlock = [aConfigureCellBlock copy];
self.itemSize = itemSize;
}
return self;
} - (id)itemAtIndexPath:(NSIndexPath *)indexPath
{
return self.items[(NSUInteger) indexPath.row];
} #pragma mark - UICollectionView DataSource - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ if (self.items.count == ) { NSLog(@"数组为空啦!!!");
}
return self.items.count;
} - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{ UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:self.cellIdentifier forIndexPath:indexPath];
if (!cell) {
cell = [[UICollectionViewCell alloc]init];
}
id item = [self itemAtIndexPath:indexPath];
if (self.configureCellBlock) {
self.configureCellBlock(cell,item);
}
return cell; }
#pragma mark - UICollectionView Delegate - (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{ if (self.didDeselectRow) {
self.didDeselectRow(indexPath);
}
} - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{ if (self.didSelect) {
self.didSelect(indexPath);
}
} - (void)collectionView:(UICollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath{ if (self.didHighlight) {
self.didHighlight(indexPath);
}
} //定义每个UICollectionView 的大小
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return self.itemSize;
} @end

---恢复内容结束---

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