英雄展示代码进一步完善（包括可重用单元格）

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// WBHero.h

// 0929UITableView练习

// Created by weibiao on 15-9-29.

#import <Foundation/Foundation.h>

@interface WBHero :NSObject

//图片

@property (nonatomic,copy) NSString *icon;

//详细信息

@property (nonatomic,copy) NSString *intro;

//标题

@property (nonatomic,copy) NSString *name;

//模型的实例化方法

- (instancetype)initWithDict:(NSDictionary *)dict;

+ (instancetype)heroWithDict:(NSDictionary *)dict;

@end

// WBHero.m

// 0929UITableView练习

// Created by weibiao on 15-9-29.

#import "WBHero.h"

@implementation WBHero

- (instancetype)initWithDict:(NSDictionary *)dict {

if (self =[superinit]) {

[selfsetValuesForKeysWithDictionary:dict];

}

return self;

}

+(instancetype)heroWithDict:(NSDictionary *)dict {

return [[selfalloc] initWithDict:dict];

}

@end

// ViewController.m

// 0929UITableView练习

// Created by weibiao on 15-9-29.

#import "ViewController.h"

#import "WBHero.h"

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>//2.设置遵守的协议

@property (weak, nonatomic) IBOutletUITableView *tableView;

@property (strong,nonatomic) NSArray *heros;

@end

@implementation ViewController//遵守的协议必须实现UITableViewDataSource文档中required的方法，否则会有警告

/**

@required

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

// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:

// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)

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

@optional

- (void)viewDidLoad {

[superviewDidLoad];

//1.首先设置数据源

self.tableView.dataSource =self;//控制器就是数据源

self.tableView.delegate =self;

}

#pragma mark - 懒加载

- (NSArray *)heros {

if (_heros ==nil) {

// 1.获得全路径

NSString *fullPath = [[NSBundlemainBundle] pathForResource:@"heros.plist"ofType:nil];

// 2.根据全路径获得数据---设置字典

NSArray *dictArray = [NSArrayarrayWithContentsOfFile:fullPath];

// 3.字典转模型

// 3.1先设置模型（为可变数组），并设置模型中要放入的对象个数

NSMutableArray *models = [NSMutableArrayarrayWithCapacity:dictArray.count];

// 3.2遍历模型，取出每个模型中的对象

for (NSDictionary *dictin dictArray) {

// 3.3字典中的每个对象都为WBHero类型，取出

WBHero *hero = [WBHeroheroWithDict:dict];

[modelsaddObject:hero];//把遍历的对象放入模型

}

_heros = [models copy];

}

return _heros;

}

#pragma mark - UITableViewDataSource

//3.设置返回的组数

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

return 1;

}

//4.设置返回的行数

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

return self.heros.count;

}

// 5.设置可重用的cell，此方法使用频率非常高

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

//表格明细

// NSLog(@"实例化，表格明细，%ld",indexPath.row);

// 5.0可重用表格标识符

//静态变量，能够保证系统只为变量分配一次内存空间，静态变量一旦创建就不会被释放，直至应用程序被销毁，才释放

static NSString *ID =@"Cell";

//5.1取缓存池中可重用的单元格

UITableViewCell *cell = [tableViewdequeueReusableCellWithIdentifier:ID];

if (cell == nil) {

NSLog(@"重用前的实例化，%ld",indexPath.row);

// 实例化新的单元格

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleSubtitlereuseIdentifier:ID];

}

//代码运行至此一定有了单元格

//5.1创建cell

// UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:nil];

// 5.2取得英雄对象

WBHero *model = self.heros[indexPath.row];

// 5.3设置数据

cell.textLabel.text = model.name;

cell.imageView.image = [UIImageimageNamed:model.icon];

cell.detailTextLabel.text = model.intro;

/**

typedef NS_ENUM(NSInteger, UITableViewCellAccessoryType) {

UITableViewCellAccessoryNone, //

默认情况下：don't show any accessory view

UITableViewCellAccessoryDisclosureIndicator, // regular chevron. doesn't track

UITableViewCellAccessoryDetailDisclosureButton, // info button w/ chevron. tracks 箭头

UITableViewCellAccessoryCheckmark, // checkmark. doesn't track 对号

UITableViewCellAccessoryDetailButton NS_ENUM_AVAILABLE_IOS(7_0) // info button. tracks

};

// 设置右边的箭头，提示用户当前行能够点击，通常会跳转到下一个界面

cell.accessoryType =UITableViewCellAccessoryDisclosureIndicator;

// 设置对号，通常提示用户设置完毕，用的较少

cell.accessoryType =UITableViewCellAccessoryCheckmark;

//按钮

cell.accessoryType =UITableViewCellAccessoryDetailButton;

//按钮+箭头，有各自的功能

cell.accessoryType =UITableViewCellAccessoryDetailDisclosureButton;

/**

typedefNS_ENUM(NSInteger, UIButtonType) {

UIButtonTypeCustom =0, // no button type

UIButtonTypeSystemNS_ENUM_AVAILABLE_IOS(7_0), // standard system button

UIButtonTypeDetailDisclosure,

UIButtonTypeInfoLight,

UIButtonTypeInfoDark,

UIButtonTypeContactAdd,

UIButtonTypeRoundedRect = UIButtonTypeSystem, // Deprecated, use UIButtonTypeSystem instead

};

cell.accessoryView = [UIButtonbuttonWithType:UIButtonTypeContactAdd];

cell.accessoryView = [UIButtonbuttonWithType:UIButtonTypeCustom];//此时不会有显示

//UISwitch

UISwitch *switcher = [[UISwitchalloc] init];

// 添加监听方法

[switcher addTarget:selfaction:@selector(switcherChanged:)forControlEvents:UIControlEventTouchUpInside];

cell.accessoryView = switcher;

// 5.4返回cell

return cell;

}

//switcherChanged监听方法

-(void)switcherChanged:(UISwitch *)sender {

NSLog(@"%s,%@",__func__,sender);

}

// 隐藏状态栏

-(BOOL)prefersStatusBarHidden {

return YES;

}

@end

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