Getting this error - type 'Future<dynamic>' is not a subtype of type 'List<dynamic>' - flutter

Question

Whenever trying to call future data and trying converting to List, it returns the error
type 'Future' is not a subtype of type 'List'
Tried type-casting, but no help
On HomePage.dart
final getPost = NetworkFile().getPosts();
List posts;
void getPostsList() {
setState(() {
var res = getPost;
posts = res as List<dynamic>;
print(posts);
});
}
On Network.dart
class NetworkFile{
Future<dynamic> getPosts() async {
var response = await http.get('$kBlogURL' + 'posts?_embed');
Iterable resBody = await jsonDecode(response.body.toString());
return resBody;
}
}

Answer 1

You are decoding the response and its a List of type dynamic. There are few method to handle it. You can create a simple PODO class and cast/mapped to it. Or just do like below:
List posts = [];
void getPostsList() async {
final fetchedPosts = await NetworkFile().getPosts();
setState(() {
posts = fetchedPosts;
});
print(posts);
}
Here is a nice article about PODO.

Answer 2

final getPost = NetworkFile().getPosts();
Map posts;
void getPostsList() async {
var res = await getPost;
setState(() {
posts = res as Map<String, dynamic>;
print(posts);
});
}
class NetworkFile {
Future<dynamic> getPosts() async {
var response = await http.get('https://onetechstop.net/wp-json/wp/v2');
var resBody = await jsonDecode(response.body.toString());
return resBody;
}
}