Question

这是我执行的代码......

 NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&error];

         [[NSUserDefaults standardUserDefaults] setObject:[dictionary objectForKey:@"user_id"] forKey:@"User_Id"];

         [[NSUserDefaults standardUserDefaults] synchronize];

  NSLog(@"%@",[[NSUserDefaults standardUserDefaults] objectForKey:@"User_Id"]);

这是我的 Json Response

{
    "flag": "true",
    "message": "success",
    "data": [
        {
            "username": "ankurk",
            "user_id": "16",
            "email": "ankurk.psk@gmail.com"
        }
    ]
}

但我坚持将用户ID存储到用户默认值请帮助我在这里发生什么事？

谢谢

Answer 1

NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&error];
NSArray *array = [dictionary objectForKey:"data"];
NSDictionary *dataDictionary=[array objectAtIndex:0]; 
[[NSUserDefaults standardUserDefaults] setObject:[dataDictionary objectForKey:@"user_id"] forKey:@"User_Id"];
[[NSUserDefaults standardUserDefaults] synchronize];

Answer 2

根JSON对象没有与键“user_id”关联的值，因为“user_id”位于“data”数组中。您需要首先从JSON对象中提取“data”数组，然后检索与“user_id”键关联的值。请尝试使用以下代码段将“user_id”值存储到NSUserDefaults。

NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&error];
NSArray *dataArray = [dictionary objectForKey:"data"];

[[NSUserDefaults standardUserDefaults] setObject:dataArray[@"user_id"] forKey:@"User_Id"];

存储值在NSUser默认

3 个答案: