将词典转换为一个数组

Question

此代码：

for (NSDictionary *object in JSONArray) {
         NSMutableArray *birdtemp = [[NSMutableArray alloc] initWithObjects:object[@"case_name"], nil];
        [allparts addObject:birdtemp];
    }

输出此日志：

log: (
        (
        "NZXT Phantom 410"
    ),
        (
        "Thermaltake MK+"
    )
)

我想知道我可以用什么代码将日志记录到一个数组中，如：

log: (

    "NZXT Phantom 410",
    "Thermaltake MK+"
)

Json Array是：

log: (
        {
        "case_color" = White;
        "case_description" = "";
        "case_image" = "http://sitecom/get/parts/part_images/nzxtphantom410.jpeg";
        "case_name" = "NZXT Phantom 410";
        "case_price" = "99.99";
        "case_type" = ATX;
        id = 1;
    },
        {
        "case_color" = Black;
        "case_description" = "";
        "case_image" = "http://site.com/get/parts/part_images/thernaltake-mkplus.jpeg";
        "case_name" = "Thermaltake MK+";
        "case_price" = "84.99";
        "case_type" = ATX;
        id = 2;
    }
)

Answer 1

排除故障并得到了这个：

allparts = [[NSMutableArray alloc] init];
    NSString *birdtemp;
    for (NSDictionary *object in JSONArray) {
            birdtemp = object[@"case_name"];
        [allparts addObject:birdtemp];
    }

Answer 2

获得所需结果的一种简单方法是使用键值编码（KVC）：

NSArray *allparts = [JSONArray valueForKey:@"case_name"];

以这种方式在数组上使用的键值编码起初可能看起来有点反直觉，但它非常强大。

Answer 3

   NSMutableArray *array = [[NSMutableArray alloc] init];
    for (NSDictionary *dict in JSONArray) {

        [array addObject:[dict objectForKey:@"case_name"]];
    }
    NSLog(@"Your Array: %@",array);

我认为这会对你有所帮助。

Answer 4

NSMutableArray *birdtemp  = [NSMutableArray ....];   
     for (NSDictionary *object in JSONArray) {
               [birdtemp addObject:object[@"case_name"]];
      }
     [allparts addObject:birdtemp];