分离tableview的datasource , 实现ViewController “瘦身”

分离tableview的datasource ,  实现ViewController “瘦身”

这是一个实现轻量级ViewController的基本方法,大家通过这个代码页可以实现代理的分离.

#import <Foundation/Foundation.h>
typedef
void(^TableViewCellConfigureBlock) (id cell,id item);

@interface ZYYArrayDataSource :
NSObject<UITableViewDataSource>

-(id)initWithItems:(NSArray *)anItems cellItentifier:(NSString *)aCellIdentifier
configureCellBlock:(TableViewCellConfigureBlock)aConofigureCellBlock;

- (id)itemAtIndexPath:(NSIndexPath *)indexPath;

@end

#import "ZYYArrayDataSource.h"

#import "ZYYDataCell.h"

@interface
ZYYArrayDataSource()

@property (nonatomic,
strong) NSArray *items;
@property (nonatomic,
copy) NSString *cellIdentifier;

@property (nonatomic,
copy)
TableViewCellConfigureBlock configureCellBlock;

@end
@implementation ZYYArrayDataSource

- (id)init
{

    return
nil;
}
-(id)initWithItems:(NSArray *)anItems cellItentifier:(NSString *)aCellIdentifier
configureCellBlock:(TableViewCellConfigureBlock)aConofigureCellBlock
{
   
self = [super
init];
   
if (self) {
       
self.items = anItems;
       
self.cellIdentifier = aCellIdentifier;
       
self.configureCellBlock = [aConofigureCellBlock
copy];
    }

    return
self;
}

-(id)itemAtIndexPath:(NSIndexPath *)indexPath
{
   
return self.items[(NSUInteger)indexPath.row];
}

#pragma mark UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    return
self.items.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath
{
    ZYYDataCell * cell = [tableView dequeueReusableCellWithIdentifier:self.cellIdentifier];
   
if (cell== nil) {
        cell = [[ZYYDataCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:self.cellIdentifier];
    }
   
id  item = [self
itemAtIndexPath:indexPath];
   
self.configureCellBlock(cell,item);
   
return cell;
}

@end

//在viewController里面这么使用就可以了
UITableView * tableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];
self.mTableView = tableView;

//为初始化列表的数据源声明一个block
TableViewCellConfigureBlock configureBlock = ^(ZYYDataCell *cell,NSString * titile){
    [cell configureForData:titile];
};

//初始化列表的数据源
_dataSource = [[ZYYArrayDataSource alloc]initWithItems:self.mArrayData cellItentifier:@"ID" configureCellBlock:configureBlock];
self.mTableView.dataSource = _dataSource;

//把列表添加到View上
[self.view addSubview:self.mTableView];