Flutter - 如何将下拉按钮内的文本字段作为值

Question

I have to insert new value into dropdown by textfield For exemple I have a dropdown of much countries but not all countries. If user have to choose her countrie And not find it he can insert her countrie by the text field

Answer 1

Always post the code that you have written, it'll be easier for whoever wants to help you.

Assuming you are using a list of type <String> for the dropdown button, called exampleList . The items of example list will make up your dropdown items.

If you wanted to add a new item to that list.

In your text field, on submission you can use exampleList.add(yourNewValue) to add items to your list.