Objective-C 经典字典数组排序 - 省市区

 根据路径产生相应的字符              tring *str = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil]; 对字符串进行切割成为数组 NSArray *array = [str componentsSeparatedByString:@"/n"];   建立一个大数组  NSMutableArray *mutableArray = [NSMutableArray array];  for (NSString *str in array) {    判断非空格字符,找出省    if (![str hasPrefix:@" "]) {   每找到一个省名字,就创建一个字典  NSMutableDictionary *proDic = [NSMutableDictionary dictionary];   将省名存入字典,并设置Key为PROVIN  [proDic setObject:str forKeyedSubscript:@"PROVIN"];   创建一个数组,作为存下属市用  NSMutableArray *cityArray = [NSMutableArray array];   将市数组存入字典,设置key位CITYARRAY  [proDic setObject:cityArray forKeyedSubscript:@"CITYARRAY"];  [mutableArray addObject:proDic];    }   找到市名字  if ([str hasPrefix:@" "]&& ![str hasPrefix:@"  "]) {   取出数组最后一个元素,代表市所隶属的省字典  NSDictionary *proDic = [mutableArray lastObject];         将字典中预留的数组取出  NSMutableArray *cityArray = [proDic objectForKey:@"CITYARRAY"];        每找到一个市,创建一个字典  NSMutableDictionary *cityDic = [NSMutableDictionary dictionary];        将市名字存入字典  [cityDic setObject:str forKey:@"CITY"];        给下属区域创建个数组作为预留  NSMutableArray *areaArray = [NSMutableArray array];       存入字典  [cityDic setObject:areaArray forKey:@"AREAARRAY"];       将市字典存入数组中  [cityArray addObject:cityDic];  }       找出下属区    if ([str hasPrefix:@"  "]) {     找出隶属的省字典     NSDictionary *proDic = [mutableArray lastObject];     找出市数组     NSMutableArray *cityArray = [proDic objectForKey:@"CITYARRAY"];     找出存储市的字典     NSDictionary *cityDic = [cityArray lastObject];    找出字典中区数区     NSMutableArray *areaArray = [cityDic objectForKey:@"AREAARRAY"];     将区域名字存入数组      [areaArray addObject:str];   } }  for (NSDictionary *dic in mutableArray) {    NSLog(@"%@",[dic objectForKey:@"PROVIN"]);    for (NSDictionary *cityDic in [dic objectForKey:@"CITYARRAY"]) {      NSLog(@"%@",[cityDic objectForKey:@"CITY"]);     for (NSString *string in [cityDic objectForKey:@"AREAARRAY"]) {       NSLog(@"%@",string);            }   }     }</span></span>