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解析稍微复杂一点的数据

碰到如上图所示的数据需要我们解析，用"name"的值作为分区头标题，用上图所圈起来的字典作为一个model，我们可以用两种方式解析:

第一种方式：就是使用一个数组和一个字典，数组用来存储"name"里的值，作为key；字典用来存储所有数据;

第二种方式：就是使用两个数组，其中一个数组用来存储"name"的值，另一个数组存储所有数据;

闲言修叙：直接上代码

第一种方式：

  1 #import "RootTableViewController.h"
  2 #import "YHCell.h"
  3 
  4 @interface RootTableViewController ()
  5 
  6 @property (nonatomic, strong) NSMutableArray *allKeysArray;
  7 @property (nonatomic, strong) NSMutableDictionary *allDataDict;
  8 
  9 @end
 10 
 11 @implementation RootTableViewController
 12 
 13 // 懒加载
 14 - (NSMutableDictionary *)allDataDict {
 15     
 16     if (!_allDataDict) {
 17         _allDataDict = [NSMutableDictionary dictionary];
 18     }
 19     return _allDataDict;
 20 }
 21 
 22 - (NSMutableArray *)allKeysArray {
 23     
 24     if (!_allKeysArray) {
 25         _allKeysArray = [NSMutableArray array];
 26     }
 27     return _allKeysArray;
 28 }
 29 
 30 
 31 - (void)viewDidLoad {
 32     [super viewDidLoad];
 33     
 34     self.navigationItem.title = @"旅游";
 35     self.tableView.showsVerticalScrollIndicator = NO;
 36     
 37     
 38     // 数据处理
 39     [self loadWebData];
 40     
 41     
 42     // 注册cell
 43     [self.tableView registerClass:[YHCell class] forCellReuseIdentifier:@"cell"];
 44     
 45 }
 46 
 47 
 48 // 数据处理
 49 - (void)loadWebData {
 50     NSURL *url = [NSURL URLWithString:@"http://api.yhouse.com/m/city/dynmiclist"];
 51     NSURLRequest *request = [NSURLRequest requestWithURL:url];
 52     NSURLSession *session = [NSURLSession sharedSession];
 53     
 54     NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
 55         if (error == nil) {
 56             
 57             NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
 58             NSDictionary *dict1 = dict[@"data"];
 59             NSArray *array = dict1[@"allCity"];
 60             
 61             for (int i = 0; i < array.count; i++) {
 62                 NSDictionary *dict2 = array[i];
 63                 
 64                 NSMutableArray *dataArray = [NSMutableArray array];
 65                 for (NSString *key in dict2) {
 66                     
 67                     if ([key isEqualToString:@"name"]) {
 68                         NSString *value = dict2[key];
 69                         [self.allKeysArray addObject:value];
 70                     }
 71                     
 72                     if ([key isEqualToString:@"tabs"]) {
 73                         for (NSDictionary *dict3 in dict2[key]) {
 74                             Model *model = [[Model alloc] init];
 75                             [model setValuesForKeysWithDictionary:dict3];                        
 76                             [dataArray addObject:model];
 77                         }
 78                     }
 79                 }
 80                 [self.allDataDict setObject:dataArray forKey:[self.allKeysArray lastObject]];
 81             }
 82             [self.tableView reloadData];
 83         }
 84     }];
 85     
 86     [task resume];
 87 }
 88 
 89 // 设置分区个数
 90 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
 91     
 92     return self.dataHandle.allKeysArray.count;
 93 }
 94 
 95 // 设置每个分区的行数
 96 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
 97     
 98     NSString *key = self.dataHandle.allKeysArray[section];
 99     NSInteger index = [self.dataHandle.allDataDict[key] count];
100     return index;
101 }
102 
103 
104 // 返回cell
105 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
106     
107     YHCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
108 
109     Model *model = [[Model alloc] init];
110     NSString *key = self.dataHandle.allKeysArray[indexPath.section];
111     model = self.dataHandle.allDataDict[key][indexPath.row];
112     
113     // 给cell赋值
114     [cell bindModel:model];
115 
116     
117     return cell;
118 }
119 
120 
121 // 设置cell高度
122 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
123     
124     return 50;
125 }
126 
127 
128 // 设置头标题
129 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
130     
131     return self.dataHandle.allKeysArray[section];
132 }
133 
134 @end

第一种方式中间的解析数据也可以全用foin循环来解析，也就是还可以简化一点代码:

 1 - (void)loadWebData {
 2     NSURL *url = [NSURL URLWithString:@"http://api.yhouse.com/m/city/dynmiclist"];
 3     NSURLRequest *request = [NSURLRequest requestWithURL:url];
 4     NSURLSession *session = [NSURLSession sharedSession];
 5     
 6     NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
 7         if (error == nil) {
 8             
 9             NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
10             NSDictionary *dict1 = dict[@"data"];
11             NSArray *array = dict1[@"allCity"];
12             
13             for (NSDictionary *dict2 in array) {
14                 [self.allKeysArray addObject:dict2[@"name"]];
15                 
16                 NSMutableArray *array1 = [NSMutableArray array];
17                 for (NSDictionary *dict3 in dict2[@"tabs"]) {
18                     Model *model = [[Model alloc] init];
19                     [model setValuesForKeysWithDictionary:dict3];
20                     [array1 addObject:model];
21                 }
22                 [self.allDataDict setObject:array1 forKey:[self.allKeysArray lastObject]];
23             }
24         }
25         [self.tableView reloadData];
26     }];
27     
28     [task resume];
29 }

第二种方法：

  1 #import "RootTableViewController.h"
  2 #import "YHCell.h"
  3 
  4 @interface RootTableViewController ()
  5 
  6 @property (nonatomic, strong) NSMutableArray *allKeysArray;
  7 @property (nonatomic ,strong) NSMutableArray *allDataArray;
  8 
  9 @end
 10 
 11 @implementation RootTableViewController
 12 
 13 // 懒加载
 14 - (NSMutableArray *)allKeysArray {
 15     
 16     if (!_allKeysArray) {
 17         _allKeysArray = [NSMutableArray array];
 18     }
 19     return _allKeysArray;
 20 }
 21 
 22 - (NSMutableArray *)allDataArray {
 23     
 24     if (!_allDataArray) {
 25         _allDataArray = [NSMutableArray array];
 26     }
 27     return _allDataArray;
 28 }
 29 
 30 
 31 
 32 - (void)viewDidLoad {
 33     [super viewDidLoad];
 34     
 35     
 36     self.navigationItem.title = @"旅游";
 37     self.tableView.showsVerticalScrollIndicator = NO;
 38     
 39     
 40     // 数据处理
 41     [self loadData];
 42     
 43     
 44     // 注册cell
 45     [self.tableView registerClass:[YHCell class] forCellReuseIdentifier:@"cell"];
 46     
 47 }
 48 
 49 
 50 // 数据处理
 51 - (void)loadData {
 52     
 53     NSURL *url = [NSURL URLWithString:@"http://api.yhouse.com/m/city/dynmiclist"];
 54     
 55     NSURLSession *session = [NSURLSession sharedSession];
 56     NSURLSessionTask *task = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
 57         
 58         NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
 59         NSDictionary *dict1 = dict[@"data"];
 60         NSArray *array = dict1[@"allCity"];
 61         
 62         for (NSDictionary *dict2 in array) {
 63             
 64             NSMutableArray *array1 =[NSMutableArray array];
 65     
 66             [self.allKeysArray addObject:dict2[@"name"]];
 67             
 68             for (NSDictionary *dict3 in dict2[@"tabs"]) {
 69                 Model *model = [[Model alloc] init];
 70                 [model setValuesForKeysWithDictionary:dict3];
 71                 [array1 addObject:model];
 72             }
 73             
 74             [self.allDataArray addObject:array1];
 75         }
 76         [self.tableView reloadData];
 77         
 78     }];
 79     
 80     [task resume];
 81 
 82 }
 83 
 84 
 85 // 分区个数
 86 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
 87     
 88     return self.allKeysArray.count;
 89 }
 90 
 91 // 每个分区的行数
 92 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
 93     
 94     return [self.allDataArray[section] count];
 95 }
 96 
 97 
 98 // 返回cell
 99 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
100     
101     YHCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
102     
103     Model *model = [[Model alloc] init];
104     NSArray *array = self.allDataArray[indexPath.section];
105     model = array[indexPath.row];
106     
107     // 给cell赋值
108     [cell bindModel:model];
109     
110     
111     return cell;
112 }
113 
114 
115 // 设置cell高度
116 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
117     
118     return 50;
119 }
120 
121 
122 // 设置头标题
123 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
124     
125     return self.allKeysArray[section];
126 }
127 
128 @end

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原文地址：https://www.cnblogs.com/zhizunbao/p/5493294.html