UI09_UITableView 使用 单例

========—————==========————=============———

//
//  AppDelegate.m

//  UI09_UITableView

//  Created by dllo on 15/10/28.
//  Copyright (c) 2015年 z_han. All rights reserved.
//

#import "AppDelegate.h"
#import "RootViewController.h"
@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
   
    RootViewController *rootVC = [[RootViewController alloc]init];
    UINavigationController *naviC = [[UINavigationController alloc]initWithRootViewController:rootVC];
    self.window.rootViewController = naviC;

 

    return YES;

}

@end

//

//  RootViewController.m

//  UI09_UITableView

//  Created by dllo on 15/10/28.
//  Copyright (c) 2015年 z_han. All rights reserved.
//#import "RootViewController.h"

#import "FirstViewController.h"
#import "Singleton.h"
#import "Student.h"
@interface RootViewController ()<UITableViewDelegate,UITableViewDataSource>

@end

@implementation RootViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor orangeColor];
   
    UITableView *myTableView = [[UITableView alloc]initWithFrame:[[UIScreen mainScreen]bounds] style:UITableViewStylePlain];// 分行的
//    UITableViewStyleGrouped 分组的
    myTableView.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:myTableView];
   
    myTableView.delegate = self;// 基本配置代理
    myTableView.dataSource = self;// 数据源代理
   
    // 去掉cell的线
    myTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
   
    UIView *headerView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 375, 200)];
    headerView.backgroundColor = [UIColor colorWithRed:1.000 green:0.252 blue:0.457 alpha:1.000];
    // 设置tableView的表头视图
    myTableView.tableHeaderView = headerView;
   
//    [self setAutomaticallyAdjustsScrollViewInsets:NO];
   
    // 刷新整个tableview
    [myTableView reloadData];
    // 刷新指定的cell
//    [myTableView reloadRowsAtIndexPaths:<#(NSArray *)#> withRowAnimation:<#(UITableViewRowAnimation)#>]
   
//    [Singleton shareSingleton];
   
 
}
// 设置cell行高
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 100;

}

// 设置Section的个数 区的个数
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return [Singleton shareSingleton].studentDic.allKeys.count;
}
// 设置每个Section的行数

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    NSString *key = [[Singleton shareSingleton].studentDic.allKeys objectAtIndex:section];    // 根据key取出对应的数组

    NSMutableArray *array = [[Singleton shareSingleton].studentDic objectForKey:key];
    // 当前Section的行数由数组个数决定
    return array.count;
}
//
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
        //1. 先从重用池里取
    // queue：队列  reusable：重用  identifier：标识符
    // 标识符是区别不同Cell的唯一标记
    static NSString *cellIdentifier = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
        //2. Cell是否为空，为空则alloc

    if (cell == nil) {// 对象可以直接==
//        Cell是否为空，为空则创建
//        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];// style  类型  自己试试
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];// 副标题
     
    }
    //**  注意执行顺序  重用机制  显示最后的代码
    NSString *string = [NSString stringWithFormat:@"section = %ld,row = %ld",indexPath.section,indexPath.row];
    cell.textLabel.text = string;
    if ((indexPath.section == 1) && (indexPath.row == 2)) {
        cell.textLabel.text = @"第三步";

    }

    // 副标题
    cell.detailTextLabel.text = @"副标题";
    //设置cell显示图片
    cell.imageView.image = [UIImage imageNamed:@""];
    // 取消cell的置灰效果
//    cell.selectionStyle = UITableViewCellSelectionStyleNone;
   
    NSString *key = [[Singleton shareSingleton].studentDic.allKeys objectAtIndex:indexPath.section];
    NSMutableArray *array = [[Singleton shareSingleton].studentDic objectForKey:key];
    Student *stu = [array objectAtIndex:indexPath.row];
//    cell.textLabel.text = stu.name;

    //举例刷新（随机数）
    NSString *string1 = [NSString stringWithFormat:@"%d",arc4random()%201];
        cell.textLabel.text = string1;
    return cell;
}
#pragma mark -- 设置字母检索
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{
//    return [NSArray arrayWithObjects:@"A", @"B", @"C", @"D", nil];
    return [Singleton shareSingleton].studentDic.allKeys;
}
// 设置Section表头标题
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    /*if (section == 0) {
        return @"A";
    }
    if (section == 1) {
        return @"B";
    }
    if (section == 2) {
        return @"C";
    }
    return @"D";*/
    NSString *key = [[Singleton shareSingleton].studentDic.allKeys objectAtIndex:section];
   
    return key;
}
// 选中cell触发的方法
// didDeselectRowAtIndexPath 选中的时候不触发，选中下一个cell时触发
// didSelectRowAtIndexPath 选中cell时触发
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    /*
    // 选中的时候有置灰效果，离开时消失选中效果
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
   
    // 自定义cell下标位置路径
    NSIndexPath *indexPt = [NSIndexPath indexPathForRow:2 inSection:2];
    // 滚动到某一行cell
    [tableView scrollToRowAtIndexPath:indexPt atScrollPosition:UITableViewScrollPositionBottom animated:YES];
   
    NSLog(@"section = %ld row = %ld",indexPath.section, indexPath.row);
    FirstViewController *firstVC = [[FirstViewController alloc]init];
    NSString *string1 = [NSString stringWithFormat:@"section = %ld,row = %ld",indexPath.section,indexPath.row];
    firstVC.string = string1;
//     firstVC.indexPath = self.indexPath;
    [self.navigationController pushViewController: firstVC animated:YES];
    */
   
    // 刷新全部数据
//    [tableView reloadData];

    // 刷新指定的cell,可以是多行
    // 创建指定的某行的下标对象
    NSIndexPath *index = [NSIndexPath indexPathForRow:0 inSection:0];
   
    [tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath,index, nil] withRowAnimation:UITableViewRowAnimationBottom];//indexPath 点击的 当前的Row
}

 

@end

========—————==========————===========

//
//  FirstViewController.h

//  UI09_UITableView

 //  Created by dllo on 15/10/28.
//  Copyright (c) 2015年 z_han. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController

@property (nonatomic,retain)NSString *string;

//@property (nonatomic, retain)NSInteger indexPath;

@end

 

 

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor colorWithRed:1.000 green:0.853 blue:0.000 alpha:1.000];
   
   
    self.navigationItem.title = self.string;
   
//    self.title = [NSString stringWithFormat:@"%d %d",self.indexPath.section, self.indexPath.row];
   
}

@end

//

//  Singleton.h

//  UI09_UITableView

//  Created by dllo on 15/10/28.
//  Copyright (c) 2015年 z_han. All rights reserved.
//
#import <Foundation/Foundation.h>

@interface Singleton : NSObject

+ (instancetype)shareSingleton;


@property (nonatomic, retain)NSMutableDictionary *studentDic;

 

@end

//

//  Singleton.m

//  UI09_UITableView

//  Created by dllo on 15/10/28.
//  Copyright (c) 2015年 z_han. All rights reserved.
//
#import "Singleton.h"
#import "Student.h"

@implementation Singleton

#warning 问题  为什么不能调用-号方法
+ (instancetype)shareSingleton{
    static Singleton *singleton = nil;
    if (singleton == nil) {
        // if里面只执行一次
        singleton = [[Singleton alloc]init];
        // self 在+号方法里代表当前的类
        [singleton createStudentDic];
    }
    return singleton;
}


- (void)createStudentDic{
    // 张啊
    NSMutableDictionary *dic1 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"张啊", @"name", @"男", @"gender", nil];
    // 王婷
    NSMutableDictionary *dic2 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"王婷", @"name", @"女", @"gender", nil];
    // 张前
//    NSMutableDictionary *dic3 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"张前", @"name", @"男", @"gender", nil];
    NSMutableArray *zhangArray = [NSMutableArray arrayWithObjects:dic1,dic2, nil];
    // 王天
    NSMutableDictionary *dic3 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"王天", @"name", @"男", @"gender", nil];
    // 王飞
    NSMutableDictionary *dic4 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"王飞", @"name", @"男", @"gender", nil];
    NSMutableArray *wangArray = [NSMutableArray arrayWithObjects:dic3, dic4, nil];
   
    // 大字典
    NSMutableDictionary *bigDic = [NSMutableDictionary dictionaryWithObjectsAndKeys:zhangArray,@"Z",wangArray,@"W", nil];
    NSLog(@"bigDic = %@",bigDic);
   
    // 取两个以上的 要用遍历 for循环
    // model
    // 将大字典扒开，取到小字典里学生的信息，并赋值给model对象
   
    // 创建最外层大字典
    self.studentDic = [NSMutableDictionary dictionary];
   
    for (NSString *Key in bigDic) {
        // 根据key取出对应的数组
        NSMutableArray *array = [bigDic objectForKey:Key];
       
        // 创建一个新的数组，存model对象
        NSMutableArray *stuArray = [NSMutableArray array];
        for (NSMutableDictionary *dic in array) {
            // 一个学生对象对应一个学生小字典
            Student *stu = [[Student alloc]init];
            stu.name = [dic objectForKey:@"name"];
            stu.gender = [dic objectForKey:@"gender"];
           
            // 将model对象存入数组中
            [stuArray addObject:stu];
            [stu release];     
        }
       
        [self.studentDic setObject:stuArray forKey:Key];
    }

   

}

@end

//

//  Student.h
//  UI09_UITableView
//
//  Created by dllo on 15/10/21.
//  Copyright (c) 2015年 z_han. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Student : NSObject

@property (nonatomic,copy)NSString *name;
@property (nonatomic,copy)NSString *gender;

 

@end

 

//  Student.m

//  UI09_UITableView

 //
//  Created by dllo on 15/10/21.
//  Copyright (c) 2015年 z_han. All rights reserved.
//

#import "Student.h"

@implementation Student

@end