Dart - how _InternalLinkedHashMap<String, dynamic> convert to Map<String, dynamic>?

Question

I use package dio in my flutter app. A get response from my api question. response.data get type _InternalLinkedHashMap<String, dynamic>. I need convert this value to Map<String, dynamic>. I tried many options but this does not work.

I have no way to change the server response. Any advice?

Answer 1

Try this:

Map<String, dynamic>.from(yourData) 

Answer 2

You don't need to do any conversion between _InternalLinkedHashMap<K, V> and Map<K, V>: the former is already a subtype of the latter.

void main() async {   final map = <String, int>{};   print(map.runtimeType);   print('${map is Map<String, int>}'); } 

prints:

_InternalLinkedHashMap<String, int> true 

(Map's default constructor is a factory constructor that constructs a LinkedHashMap. LinkedHashMap's default constructor is also a factory constructor, and the implementation for the Dart VM constructs and returns an internal _InternalLinkedHashMap object.)

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Note that this is true only when _InternalLinkedHashMap<K, V> uses the same K and V as Map. If they are parameterized on different types then you will need to perform an explicit conversion, but that's not the situation asked in this question.