[iOS基础控件

A.实现思路

1.拖入UITableView

2.拖曳、连线UITableView控件

3.Controller遵守UITalbeViewDataSource协议

4.设置UITableView的dataSource

5.加载数据到Model

6.从Model解析数据，显示到View上

 

 

 

B.实现细节

1.UITableView style

（1）Grouped，成组出现，标题和尾部会被分隔开，如上图

 

（2）Plain

 

 

 

2. cars_simple.plist 文件结构

 

C.主要代码

Car.h

//
//  Car.h
//  01-CarBrand
//
//  Created by hellovoidworld on 14/11/30.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Car : NSObject

@property(nonatomic, strong) NSArray *cars;
@property(nonatomic, copy) NSString *title;
@property(nonatomic, copy) NSString *desc;

- (instancetype) initWithDictionary:(NSDictionary *) dictionary;
+ (instancetype) carWithDictionary:(NSDictionary *) dictionary;
+ (instancetype) car;

@end

 

Car.m

//
//  Car.m
//  01-CarBrand
//
//  Created by hellovoidworld on 14/11/30.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "Car.h"

@implementation Car

- (instancetype) initWithDictionary:(NSDictionary *) dictionary {
    if (self == [super init]) {
        self.cars = dictionary[@"cars"];
        self.title = dictionary[@"title"];
        self.desc = dictionary[@"desc"];
    }
   
    return self;
}

+ (instancetype) carWithDictionary:(NSDictionary *) dictionary {
    return [[self alloc] initWithDictionary:dictionary];
}

+ (instancetype) car {
    return [self carWithDictionary:nil];
}

@end

 

ViewController.m

//
//  ViewController.m
//  01-CarBrand
//
//  Created by hellovoidworld on 14/11/30.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "ViewController.h"
#import "Car.h"

@interface ViewController () <UITableViewDataSource>

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

@property(nonatomic, strong) NSArray *allBrandOfCars;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    self.tableView.dataSource = self;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


#pragma mark - dataSource方法

/** Sections 数，组数 */
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return self.allBrandOfCars.count; // 所有车的派系的数量
}

/** 组内的行数 */
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    Car *car = self.allBrandOfCars[section];
    return car.cars.count; // 每个派系的车的牌子的数量
}

/** 组的标题
这里是车的派系
*/
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    Car *car = self.allBrandOfCars[section];
    return  car.title;
}

/** 组的尾部 */
- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section {
    Car *car = self.allBrandOfCars[section];
    return  car.desc;
}

/** 行的内容 */
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
   
    Car *car = self.allBrandOfCars[indexPath.section]; // 车的派系
    NSString *carName = car.cars[indexPath.row]; // 具体车的牌子
   
    cell.textLabel.text = carName;
   
    return  cell;
}


/** 延迟加载plist文件中的数据 */
- (NSArray *) allBrandOfCars {
    if (nil == _allBrandOfCars) {
        NSArray *dictArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"cars_simple" ofType:@"plist"]];
       
        NSMutableArray *mdictArray = [NSMutableArray array];
        for (NSDictionary *dict in dictArray) {
            Car *car = [Car carWithDictionary:dict];
            [mdictArray addObject:car];
        }
       
        _allBrandOfCars = mdictArray;
    }

    return _allBrandOfCars;
}


@end