Add more children to Wrap widget in Dart

Question

I have some Buttons wrapped inside a Card and I need to add more when I have to.

I tried with Wrap.children.add but it doesn't work, no error displayed, nothing changes.

Do you know how I can solve this? I'm new in Flutter and dart so maybe I'm doing something stupid, I know. I created a global variable called _MyWrap and my idea is to add Buttons to it when a Button is pressed. "_getrandomButton" creates a new Button with a text inside(language) and "addRaisedButton" uses that function to create and add buttons to "Wrap" when the button is pressed. A button that creates other "Buttons" inside a Wrap, this is it.

Code :

Wrap _MyWrap = new Wrap (children: <Widget>[]);
Widget build(BuildContext context) {
.
.
.
child: new Stack(
        children: <Widget>[
          new ListView(
            children: <Widget>[
             _addLanguage(),
            ],
.
.
.
Widget _addLanguage(){

RaisedButton _getrandomButton(String language){
   //creates a RaisedButton
  }
Future addRaisedButton(String name_) async{
  setState(() {
    _MyWrap.children.add(_getrandomButton(name_));
  });
}
.
.
.
child : RaisedButton(
        onPressed: (){
          addRaisedButton("English");
        },

camillo777 camillo777 · Accepted Answer · 2020-05-27T14:23:07

You should keep a List of names. And in the build render the names List. Then setState just add a new name to the list of names. A new build is triggered and it will take the new list of names.

Add more children to Wrap widget in Dart

1 Answers