【移动应用开发技术】怎么写好一个UITableView

【移动应用开发技术】怎么写好一个UITableView

数据源-

(NSInteger)tableView:(UITableView

*)tableView

numberOfRowsInSection:(NSInteger)section;

-

(UITableViewCell

*)tableView:(UITableView

*)tableView

cellForRowAtIndexPath:(NSIndexPath

*)indexPath;代理-

(CGFloat)tableView:(UITableView

*)tableView

heightForRowAtIndexPath:(NSIndexPath

*)indexPath;

-

(void)tableView:(UITableView

*)tableView

didSelectRowAtIndexPath:(NSIndexPath

*)indexPath;SectionObject@interface

KtTableViewSectionObject

:

NSObject

@property

(nonatomic,

copy)

NSString

*headerTitle;

//

UITableDataSource

协议中的

titleForHeaderInSection

方法可能会用到

@property

(nonatomic,

copy)

NSString

*footerTitle;

//

UITableDataSource

协议中的

titleForFooterInSection

方法可能会用到

@property

(nonatomic,

retain)

NSMutableArray

*items;

-

(instancetype)initWithItemArray:(NSMutableArray

*)items;

@endItem@interface

KtTableViewBaseItem

:

NSObject

@property

(nonatomic,

retain)

NSString

*itemIdentifier;

@property

(nonatomic,

retain)

UIImage

*itemImage;

@property

(nonatomic,

retain)

NSString

*itemTitle;

@property

(nonatomic,

retain)

NSString

*itemSubtitle;

@property

(nonatomic,

retain)

UIImage

*itemAccessoryImage;

-

(instancetype)initWithImage:(UIImage

*)image

Title:(NSString

*)title

SubTitle:(NSString

*)subTitle

AccessoryImage:(UIImage

*)accessoryImage;

@end父类实现代码-

(NSInteger)tableView:(UITableView

*)tableView

numberOfRowsInSection:(NSInteger)section

{

if

(self.sections.count

>

section)

{

KtTableViewSectionObject

*sectionObject

=

[self.sections

objectAtIndex:section];

return

sectionObject.items.count;

}

return

0;

}优势+

(CGFloat)tableView:(UITableView*)tableView

rowHeightForObject:(KtTableViewBaseItem

*)object;@protocol

KtTableViewDelegate<UITableViewDelegate>

@optional

-

(void)didSelectObject:(id)object

atIndexPath:(NSIndexPath*)indexPath;

-

(UIView

*)headerViewForSectionObject:(KtTableViewSectionObject

*)sectionObject

atSection:(NSInteger)section;

//

将来可以有

cell

的编辑，交换，左滑等回调

//

这个协议继承了UITableViewDelegate

，所以自己做一层中转，VC

依然需要实现某

@end

@interface

KtBaseTableView

:

UITableView<UITableViewDelegate>

@property

(nonatomic,

assign)

id<KtTableViewDataSource>

ktDataSource;

@property

(nonatomic,

assign)

id<KtTableViewDelegate>

ktDelegate;

@end-

(CGFloat)tableView:(UITableView*)tableView

heightForRowAtIndexPath:(NSIndexPath*)indexPath

{

id<KtTableViewDataSource>

dataSource

=

(id<KtTableViewDataSource>)tableView.dataSource;

KtTableViewBaseItem

*object

=

[dataSource

tableView:tableView

objectForRowAtIndexPath:indexPath];

Class

cls

=

[dataSource

tableView:tableView

cellClassForObject:object];

return

[cls

tableView:tableView

rowHeightForObject:object];

}优势@interface

KtTableViewController

:

UIViewController<KtTableViewDelegate,

KtTableViewControllerDelegate>

@property

(nonatomic,

strong)

KtBaseTableView

*tableView;

@property

(nonatomic,

strong)

KtTableViewDataSource

*dataSource;

@property

(nonatomic,

assign)

UITableViewStyle

tableViewStyle;

//

用来创建

tableView

-

(instancetype)initWithStyle:(UITableViewStyle)style;

@end所有的计算机问题，都可以通过添加中间层来解决三大模块+

(void)networkTransferWithURLString:(NSString

*)urlString

andParameters:(NSDictionary

*)parameters

isPOST:(BOOL)isPost

transferType:(NETWORK_TRANSFER_TYPE)transferType

andSuccessHandler:(void

(^)(id

responseObject))successHandler

andFailureHandler:(void

(^)(NSError

*error))failureHandler

{

//

封装AFN

}@interface

DRDBaseAPI

:

NSObject

@property

(nonatomic,

copy,

nullable)

NSString

*baseUrl;

@property

(nonatomic,

copy,

nullable)

void

(^apiCompletionHandler)(_Nonnull

id

responseObject,

NSError

*

_Nullable

error);

-

(void)start;

-

(void)cancel;

...

@end如何回调[数据解析](/how-to-create-an-uitableview/#)//

KtBaseItem.m

-

(void)parseData:(NSDictionary

*)data

{

//

解析

data

这个字典，为自己的属性赋值

//

具体的实现请见后面的文章

}封装API对象Model与ItemBaseModel@interface

KtBaseModel

//

请求回调

@property

(nonatomic,

copy)

KtModelBlock

completionBlock;

//网络请求

@property

(nonatomic,retain)

KtBaseServerAPI

*serverApi;

//网络请求参数

@property

(nonatomic,retain)

NSDictionary

*params;

//请求地址

需要在子类init中初始化

@property

(nonatomic,copy)

NSString

*address;

//model缓存

@property

(retain,nonatomic)

KtCache

*ktCache;BaseItem-

(void)parseData:(NSDictionary

*)data

{

Class

cls

=

[self

class];

while

(cls

!=

[KtBaseItem

class])

{

NSDictionary

*propertyList

=

[[KtClassHelper

sharedInstance]

propertyList:cls];

for

(NSString

*key

in

[propertyList

allKeys])

{

NSString

*typeString

=

[propertyList

objectForKey:key];

NSString*

path

=

[self.jsonDataMap

objectForKey:key];

id

value

=

[data

objectAtPath:path];

[self

setfieldName:key

fieldClassName:typeString

value:value];

}

cls

=

class_getSuperclass(cls);

}

}如何使用ListItem//

In

.h

@interface

KtBaseListItem

:

KtBaseItem

@property

(nonatomic,

assign)

int

pageNumber;

@end

//

In

.m

-

(id)initWithData:(NSDictionary

*)data

{

if

(self

=

[super

initWithData:data])

{

self.pageNumber

=

[[NSString

stringWithFormat:@"%@",

[data

objectForKey:@"page_number"]]

intValue];

}

return

self;

}ListModel@protocol

KtBaseListModelProtocol

<NSObject>

@required

-

(void)refreshRequestDidSuccess;

-

(void)loadRequestDidSuccess;

-

(void)didLoadLastPage;

-

(void)handleAfterRequestFinish;

//

请求结束后的操作，刷新tableview或关闭动画等。

@optional

-

(void)didLoadFirstPage;

@end

@interface

KtBaseListModel

:

KtBaseModel

@property

(nonatomic,

strong)

KtBaseListItem

*listItem;

@property

(nonatomic,

weak)

id<KtBaseListModelProtocol>

delegate;

@property

(nonatomic,

assign)

BOOL

isRefresh;

//

如果为是，表示刷新，否则为加载。

-

(void)loadPage:(int)pageNumber;

-

(void)loadNextPage;

-

(void)loadPreviousPage;

@endRefreshTableViewController#pragma

-mark

KtBaseListModelProtocol

-

(void)loadRequestDidSuccess

{

[self

requestDidSuccess];

}

-

(void)refreshRequestDidSuccess

{

[self.dataSource

clearAllItems];

[self

requestDidSuccess];

}

-

(void)handleAfterRequestFinish

{

[self.tableView

stopRefreshingAnimation];

[self.tableView

reloadData];

}

-

(void)didLoadLastPage

{

[self.tableView.mj_footer

endRefreshingWithNoMoreData];

}

#pragma

-mark

KtTableViewDelegate

-

(void)pullUpToRefreshAction

{

[self.listModel

loadNextPage];

}

-

(void)pullDownToRefreshAction

{

[self.listModel

refresh];

}实际使用-

(void)viewDidLoad

{

[super

viewDidLoad];

[self

createModel];

//

Do

any

additional

set