1.用UITableView实现下面效果
2.实现
2.1plist文件
2.2代码实现
2.2.1模型类
分析:根据上面的plist文件可以看出应该是模型里面嵌套模型:最外面的字典代表组模型MJCarGroup,有两个属性,MJCarGroup模型嵌套一个MJCar模型
2.2.1.1模型MJCarGroup
//
// MJCarGroup.h
#import <Foundation/Foundation.h>
@interface MJCarGroup : NSObject
/**
* 这组的标题
*/
@property (nonatomic, copy) NSString *title;
/**
* 存放的所有的汽车品牌(里面装的都是MJCar模型)
*/
@property (nonatomic, strong) NSArray *cars;
+ (instancetype)groupWithDict:(NSDictionary *)dict;
- (instancetype)initWithDict:(NSDictionary *)dict;
@end
//
// MJCarGroup.m
#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
2.2.1.2MJCar模型
//
// MJCar.h
#import <Foundation/Foundation.h>
@interface MJCar : NSObject
/**
* 图标
*/
@property (nonatomic, copy) NSString *icon;
/**
* 名称
*/
@property (nonatomic, copy) NSString *name;
+ (instancetype)carWithDict:(NSDictionary *)dict;
- (instancetype)initWithDict:(NSDictionary *)dict;
@end
//
// MJCar.m
#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
2.2.2控制器
//
// MJViewController.m
#import "MJViewController.h"
#import "MJCarGroup.h"
#import "MJCar.h"
@interface MJViewController ()<UITableViewDataSource>
/**
* 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