Vfrdtyky

I have a collection of simple objets that sometimes changes. I am using a ListView to render those objects, basically text. When my collection changes the list is rebuild with the new objects, so if the list changes from 1 to 3 items, I see 3 items, but the first one keeps its previous value.

I've noticed that the method "createState" is not called in all cases when I create a new CustomTextField (in the example above, it is called only when new elements are added to the list).

How do I make sure my list is updated properly when my collection changes?

My parent widget builds a list of text fields:

...         

@override    

Widget build(BuildContext context) { 

   ...          

   var list = <Widget>;

   collection.forEach((item) {

   var widget = CustomTextField(

      content: item,

   );

   list.add(widget);

   ...

   return new ListView(

      children: list,

   );

});

...

My CustomTextField definition:

class CustomTextField extends StatefulWidget {

  final MediaContent content;

  CustomTextField({

    Key key,

    this.content,

  }) : super(key: key);



  @override

  CustomTextFieldState createState() {

    return CustomTextFieldState();

  }

}

...

MediaContent is a very simple object containing some text:

class MediaContent {

  String textData;

  ContentType type;



  MediaContent(

    this.type,

  );

}