iPad popView封装

仿照UITableView的UITableViewDataSource
协义

1.代理。让代理帮我们类完毕一些方法

2.完毕当前类不能完毕的事情还有传值等功能

实现方法

// 1. 声明一个协议

// 2. 声明协议中的方法

// 3. 声明一个遵守协议的id类型的指针

// 4. 实现协议方法

@class popView;

@protocol MyPopviewDataSource <NSObject>

//制定协议方法

//left tablevie 行数

- (NSInteger)numberOfRowsInLeftTable:(popView *)popView;

//left 标题

- (NSString *)popView:(popView *)popView titleForRow:(NSInteger)row;

//left 图标

- (NSString *)popView:(popView *)popView imageForRow:(NSInteger)row;

//left 子数据

- (NSArray *)popView:(popView *)popView subDataForRow:(NSInteger)row;

@end

@interface popView :UIView

@property (nonatomic,assign)id<MyPopviewDataSource> dataSource;

+ (popView*)makePopView;

@end

#import "popView.h"

@interface popView ()<UITableViewDataSource,UITableViewDelegate>

@property (weak,
nonatomic) IBOutletUITableView *leftTV;

@property (weak,
nonatomic) IBOutletUITableView *rightTV;

@property (nonatomic,assign)NSInteger selectRow;

@end

@implementation popView

+ (popView *)makePopView

{

return [[[NSBundlemainBundle]loadNibNamed:@"popView"owner:selfoptions:nil]firstObject];

}

#pragma mark - tableview delegate

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

{

if (tableView == _leftTV) {

return [self.dataSourcenumberOfRowsInLeftTable:self];

}else{

return [self.dataSourcepopView:selfsubDataForRow:_selectRow].count;

}

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

if (tableView == _leftTV) {

static NSString *str =@"Mycell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:str];

if (cell ==
nil) {

cell = [[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:str];

}

cell.textLabel.text = [self.dataSourcepopView:selftitleForRow:indexPath.row];

cell.imageView.image = [UIImageimageNamed:[self.dataSourcepopView:selfimageForRow:indexPath.row]];

NSArray *subDataArray = [self.dataSourcepopView:selfsubDataForRow:indexPath.row];

if (subDataArray.count) {

cell.accessoryType =UITableViewCellAccessoryDisclosureIndicator;

}else{

cell.accessoryType =UITableViewCellAccessoryNone;

}

return cell;

}else{

static NSString *str =@"Mycell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:str];

if (cell ==
nil) {

cell = [[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:str];

}

cell.textLabel.text = [self.dataSourcepopView:selfsubDataForRow:_selectRow][indexPath.row];

return cell;

}

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

if (tableView == _leftTV) {

self.selectRow = indexPath.row;

[_rightTVreloadData];

}

}

@end

在控制器使用

#import "PopViewController.h"

#import "popView.h"

#import "CategoriyModel.h"

@interface PopViewController ()<MyPopviewDataSource>

@end

@implementation PopViewController

- (void)viewDidLoad

{

[superviewDidLoad];

popView *pop = [popViewmakePopView];

[self.viewaddSubview:pop];

pop.dataSource =self;

pop.autoresizingMask =UIViewAutoresizingNone;

self.preferredContentSize =CGSizeMake(pop.frame.size.width, pop.frame.size.height);

}

//获取到
第一个分类数据下拉菜单的模型数组

- (NSArray *)getData

{

CategoriyModel *md = [[CategoriyModelalloc]init];

NSArray *categorieyArray = [md loadPlistData];

return categorieyArray;

}

#pragma mark - popview dataSource

- (NSInteger)numberOfRowsInLeftTable:(popView *)popView{

return [selfgetData].count;

}

- (NSString *)popView:(popView *)popView titleForRow:(NSInteger)row{

return [[selfgetData][row]name];

}

- (NSString *)popView:(popView *)popView imageForRow:(NSInteger)row{

return [[selfgetData][row]small_icon];

}

- (NSArray *)popView:(popView *)popView subDataForRow:(NSInteger)row{

return [[selfgetData][row]subcategories];

}

@end