我有NSDictionary
对象作为NSJSONSerialization
的结果,它的子对象是名为list的字典数组。看看我的JSON结果:作为提取HTTP请求的结果,从JSON映射NSDictionary
{
"tags": [
"rofl",
"lmao",
"funny",
"haha",
"lmfao"
],
"result_type": "exact",
"list": [
{
"defid": 3689813,
"word": "Lol",
"author": "Lol B",
"permalink": "http://lol.urbanup.com/3689813",
"definition": "The name 'Lol' is an abreviated form of the name '[Laurence]'.",
"example": "\"Hey Lol, you alright?\"\r\n\r\n\"..Well i was chattin to Lol and he said..\"",
"thumbs_up": 44617,
"thumbs_down": 9926,
"current_vote": ""
},
------- bla bla bla ----------
],
"sounds": [
"http://media.urbandictionary.com/sound/lol-871.mp3",
------- bla bla bla ----------
]
}
我还为项目类模型(名单的小孩)。
#import <Foundation/Foundation.h>
@interface Item : NSObject
@property (strong, nonatomic) NSString *defid;
@property (strong, nonatomic) NSString *word;
@property (strong, nonatomic) NSString *author;
@property (strong, nonatomic) NSURL *permalink;
@property (strong, nonatomic) NSString *definition;
@property (strong, nonatomic) NSString *example;
-(instancetype)initWithDictionary:(NSDictionary *)dict;
@end
我也造就了其初始
-(instancetype)initWithDictionary:(NSDictionary *)dict {
if (self = [super init]) {
self.defid = [dict valueForKey:@"defid"];
self.word = [dict valueForKey:@"word"];
self.author = [dict valueForKey:@"author"];
self.permalink = [dict valueForKey:@"permalink"];
self.definition = [dict valueForKey:@"definition"];
self.example = [dict valueForKey:@"example"];
}
return self;
}
我已经创建列表项的数组(NSDictionary
),我的问题是我要地图那些为我的课,所以我可以创建列表的一个实例项目。那么如何将数组中的物品转换为我的物品类呢? 我应该迭代每个数组的项目并调用初始化? 或任何优雅的方法来做到这一点?
其他问题
我是比较新进iOS开发。我只想解析我的请求结果。是否有任何提示获取某些请求并将其结果分配给数据源表视图(数组)? 这是我的获取方法:
- (void)fetchDataFromMashape:(NSURL *)URL {
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
[request setHTTPMethod:@"GET"];
[request setValue:API_KEY_MASHAPE forHTTPHeaderField:API_MASHAPE_HEADER_1];
[request setValue:API_ACCEPT forHTTPHeaderField:API_MASHAPE_HEADER_2];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *jsonResult = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSLog(@"Result: %@", jsonResult);
_results = [[NSArray alloc] initWithArray:[jsonResult valueForKey:@"list"]];
}];
[task resume];
}
我会建议你使用Github上的衬肩框架:https://开头github上。 COM /套/套。它消除了JSON的所有痛苦,以模拟序列化和反序列化。 – ZeMoon
出于某种原因,我更喜欢现在使用苹果的框架,并尽量不要使用第三方库。但是,谢谢你的建议@ZeMoon –
注意:在字典中获取值的指定方法是'objectForKey:'或者键引号('dict [@“key”]')。 'valueForKey:'是一种具有特殊行为的键值编码方法。只有在你真的需要它时才使用它。 – vadian