<UITableViewDataSource,UITableViewDelegate,UIAlertViewDelegate>

@property (weak, nonatomic) IBOutlet UITableView *tableView;
@property(nonatomic,strong)NSArray *carGroups;

#import <Foundation/Foundation.h>
@interface ZKCarModel : NSObject
//头像
@property(nonatomic,copy)NSString * icon;
//名字
@property(nonatomic,copy)NSString *name;
+(instancetype)CarWithDict:(NSDictionary *)dic;
-(instancetype)initWithDict:(NSDictionary *)dic;
@end

#import "ZKCarModel.h"
@implementation ZKCarModel
-(instancetype)initWithDict:(NSDictionary *)dic
{
 if(self=[super init])
 {
 [self setValuesForKeysWithDictionary:dic];
 }
 return self;
}
+(instancetype)CarWithDict:(NSDictionary *)dic
{
 return [[self alloc] initWithDict:dic];
}
@end
#import <Foundation/Foundation.h>
#import "ZKCarModel.h"
@interface ZKCarGroupModel : NSObject
//题目
@property(nonatomic,copy)NSString *title;
@property(nonatomic,strong)NSArray *cars;
+(instancetype)CarGroupWithDic:(NSDictionary *)dic;
-(instancetype)initWithDict:(NSDictionary *)dic;
@end

#import "ZKCarGroupModel.h"
@implementation ZKCarGroupModel
-(instancetype)initWithDict:(NSDictionary *)dic
{
 if(self=[super init])
 {
 self.title=dic[@"title"];
 NSMutableArray *Array=[NSMutableArray array];
 for (NSDictionary *dict in dic[@"cars"]) {
 ZKCarModel *Car=[ZKCarModel CarWithDict:dict];
 [Array addObject:Car];
 }
 self.cars=Array;
 }
 return self;
}
+(instancetype)CarGroupWithDic:(NSDictionary *)dic
{
 return [[self alloc] initWithDict:dic];
}
@end

#import <Foundation/Foundation.h>
@interface ZKCarModel : NSObject
//头像
@property(nonatomic,copy)NSString * icon;
//名字
@property(nonatomic,copy)NSString *name;
+(instancetype)CarWithDict:(NSDictionary *)dic;
-(instancetype)initWithDict:(NSDictionary *)dic;
@end

#import "ZKCarModel.h"
@implementation ZKCarModel
-(instancetype)initWithDict:(NSDictionary *)dic
{
 if(self=[super init])
 {
 [self setValuesForKeysWithDictionary:dic];
 }
 return self;
}
+(instancetype)CarWithDict:(NSDictionary *)dic
{
 return [[self alloc] initWithDict:dic];
}
@end
#import <Foundation/Foundation.h>
#import "ZKCarModel.h"
@interface ZKCarGroupModel : NSObject
//题目
@property(nonatomic,copy)NSString *title;
@property(nonatomic,strong)NSArray *cars;
+(instancetype)CarGroupWithDic:(NSDictionary *)dic;
-(instancetype)initWithDict:(NSDictionary *)dic;
@end

#import "ZKCarGroupModel.h"
@implementation ZKCarGroupModel
-(instancetype)initWithDict:(NSDictionary *)dic
{
 if(self=[super init])
 {
 self.title=dic[@"title"];
 NSMutableArray *Array=[NSMutableArray array];
 for (NSDictionary *dict in dic[@"cars"]) {
 ZKCarModel *Car=[ZKCarModel CarWithDict:dict];
 [Array addObject:Car];
 }
 self.cars=Array;
 }
 return self;
}
+(instancetype)CarGroupWithDic:(NSDictionary *)dic
{
 return [[self alloc] initWithDict:dic];
}
@end

//设置分区
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
 return self.carGroups.count;
}
//设置每个分区显示多少行数据
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
 ZKCarGroupModel *Model=self.carGroups[section];
 return Model.cars.count;
}
//每行显示的数据
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
 static NSString *ID=@"A";
 //从缓存中读取cell
 UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:ID];
 //如果缓存中没有cell，创建一个新的cell
 if(cell==nil){
 cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ID];
 }
 //找到当前分区的索引
 ZKCarGroupModel *GroupModel=self.carGroups[indexPath.section];
 //找到当前分区的行
 ZKCarModel *CarModel=GroupModel.cars[indexPath.row];
 //设置cell显示的文字
 cell.textLabel.text=CarModel.name;
 //设置cell显示的图片
 cell.imageView.image=[UIImage imageNamed:CarModel.icon];
 return cell;
}

//设置头样式
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
 //找到当前分区在数组中的索引
 ZKCarGroupModel *Model=self.carGroups[section];
 
 //返回当前分区的数据中的title
 return Model.title;
}

//设置索引
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
 return [self.carGroups valueForKeyPath:@"title"];
}

//点击cell时变化
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
 //创建对话框
 UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"汽车" message:@"取消" delegate:self cancelButtonTitle:@"确认" otherButtonTitles:@"取消", nil];
 //设置样式
 alertView.tag=1;
 alertView.alertViewStyle=UITableViewCellStyleSubtitle;
 //[alertView ];
 
 [alertView show];
}