省市区字典数组嵌套(UI版)

// 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];

NSString *filePath = @"/Users/dllo/Desktop/textPCA/textPCA/area-2.txt";
NSString *string = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
NSArray *mArray = [string componentsSeparatedByString:@"\n" ];
NSCharacterSet *cSet = [NSCharacterSet characterSetWithCharactersInString:@" 0123456789"]; // 字符的集合

NSMutableArray *array = [NSMutableArray array]; // 空数组
NSDictionary *rootDic = [NSDictionary dictionaryWithObjectsAndKeys:array, @"array", @"地区", @"name", nil]; // 根字典
for (NSString *s in mArray) {
NSRange r = {0, 2};
NSString *s1 = [s substringWithRange:r];
NSMutableDictionary *superDic = [NSMutableDictionary dictionaryWithDictionary:rootDic];
while ([s1 isEqualToString:@" "]) { // 几个@" "决定装到第哪层的字典里面
r.location += 2;
s1 = [s substringWithRange:r];
superDic = [superDic[@"array"] lastObject]; // 得到这个地方的字典的父字典
}
NSString *name = [s stringByTrimmingCharactersInSet:cSet]; // 字符串剔除在字符集合的字符,得到城市名字的字符串
array = [NSMutableArray array]; // 新的空数组
NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithObjectsAndKeys:name, @"name", array, @"array", nil];
// 生成的新的字典,地方名和一个空数组
[superDic[@"array"] addObject:dic]; // 把字典加在父字典的数组里
[dic setObject:superDic forKey:@"superDic" ]; // 找到子字典的父字典
}

MainViewController *mainViewController = [[MainViewController alloc]init];
UINavigationController *navigationController = [[UINavigationController alloc]initWithRootViewController:mainViewController];
[mainViewController release];
mainViewController.dic = rootDic;
self.window.rootViewController = navigationController;
[navigationController release];

return YES;
}

#import "MainViewController.h"

@interface MainViewController ()<UITableViewDelegate,UITableViewDataSource>
@end

@implementation MainViewController

- (void)viewDidLoad {
[super viewDidLoad];
self.navigationController.navigationBar.translucent = NO;
// Do any additional setup after loading the view.
UITableView *tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 64) style:UITableViewStylePlain];
[self.view addSubview:tableView];
[tableView release];
tableView.dataSource = self;
tableView.delegate = self;
tableView.rowHeight = 30;
self.title = self.dic[@"name"];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return ((NSArray *)self.dic[@"array"]).count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *reuse = @"reuse";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuse];
if (!cell) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:reuse];
}
cell.textLabel.text = self.dic[@"array"][indexPath.row][@"name"];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if (((NSArray *)self.dic[@"array"][indexPath.row][@"array"]).count) {
MainViewController *anotherVC = [[MainViewController alloc] init];
[self.navigationController pushViewController:anotherVC animated:YES];
anotherVC.dic = self.dic[@"array"][indexPath.row];
[anotherVC release];
}
}
@end