多个模型 在 tableview

MJCar.h

import

import “MJCar.h”

@implementation MJCar

+ (instancetype)carWithDict:(NSDictionary *)dict

{

return [[self alloc] initWithDict:dict];

}

(instancetype)initWithDict:(NSDictionary *)dict

{

if (self = [super init]) {

[self setValuesForKeysWithDictionary:dict];

}

return self;

}

@end

MJCarGroup.h

import

import “MJCarGroup.h”

import “MJCar.h”

@implementation MJCarGroup

+ (instancetype)groupWithDict:(NSDictionary *)dict

{

return [[self alloc] initWithDict:dict];

}

(instancetype)initWithDict:(NSDictionary *)dict

{

if (self = [super init]) {

// 赋值标题

self.title = dict[@”title”];

// 取出原来的字典数组
NSArray *dictArray = dict[@"cars"];
NSMutableArray *carArray = [NSMutableArray array];
for (NSDictionary *dict in dictArray) {
MJCar *car = [MJCar carWithDict:dict];
[carArray addObject:car];
}
self.cars = carArray;

}

return self;

}

@end

MJViewController.h

import

import “MJViewController.h”

import “MJCarGroup.h”

import “MJCar.h”

@interface MJViewController ()

/**

* 车品牌组数据

*/

@property (nonatomic, strong) NSArray *groups;

@end

@implementation MJViewController

(void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}

(NSArray *)groups

{

if (_groups == nil) {

// 初始化

// 1.获得plist的全路径

NSString *path = [[NSBundle mainBundle] pathForResource:@”cars_total.plist” ofType:nil];

// 2.加载数组
NSArray *dictArray = [NSArray arrayWithContentsOfFile:path];

// 3.将dictArray里面的所有字典转成模型对象,放到新的数组中
NSMutableArray *groupArray = [NSMutableArray array];
for (NSDictionary *dict in dictArray) {
// 3.1.创建模型对象
MJCarGroup *group = [MJCarGroup groupWithDict:dict];

// 3.2.添加模型对象到数组中
[groupArray addObject:group];
}

// 4.赋值
_groups = groupArray;

}

return _groups;

}

pragma mark - 数据源方法

(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

return self.groups.count;

}

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

{

MJCarGroup *group = self.groups[section];

return group.cars.count;

}

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

{

// 1.定义一个循环标识

static NSString *ID = @”car”;

// 2.从缓存池中取出可循环利用cell

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

// 3.缓存池中没有可循环利用的cell

if (cell == nil) {

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID];

}

// 4.设置数据

MJCarGroup *group = self.groups[indexPath.section];

MJCar *car = group.cars[indexPath.row];

cell.imageView.image = [UIImage imageNamed:car.icon];

cell.textLabel.text = car.name;

return cell;

}

/**

* 第section组显示的头部标题

*/

- (NSString )tableView:(UITableView )tableView titleForHeaderInSection:(NSInteger)section

{

MJCarGroup *group = self.groups[section];

return group.title;

}

/**

* 返回右边索引条显示的字符串数据

*/

- (NSArray )sectionIndexTitlesForTableView:(UITableView )tableView

{

return [self.groups valueForKeyPath:@”title”];

}

(BOOL)prefersStatusBarHidden

{

return YES;

}

@end

注意点：需要加入plist文件

不要写description，官方用了