How to add the widgets dynamically to column in Flutter?

If you have the comments data already, simply create a List, then pass it to the children property of the Column. Something like:

var commentWidgets = List<Widget>();
for (var comment in comments) {
  commentWidgets.Add(Text(comment.text)); // TODO: Whatever layout you need for each widget.
}
…

new Expanded(
      child:
      new ListView(
        shrinkWrap: true,
        children: <Widget>[

          // Title

          new Padding(padding: const EdgeInsets.only(
              top: 10.00, left: 10.00),
            child: new Text(
              _feed.title, textAlign: TextAlign.start,),
          ),

          // content

          new Container(
            child: new Text(
              _feed.content, textAlign: TextAlign.start,),
          ),

          // Comments List will go here
          Column(children: commentWidgets,),
        ],
      ),
    ),

If you don't have the comments data already and need to fetch it, use a FutureBuilder to build the UI once the future completes.

Another way:

return Column(
      children: [
        for(String item in list) Text(item);

    ]);

You can also mix static and dynamic fields eaisly in this case:

return Column(
          children: [
            for(String item in list) Text(item),
          Text("Static text control"),
   
        ]);

By maintaining a reference to the Column object, the .children field/property can be referenced after the Column object has been declared - like so:

Column someColumn = Column(
  children: [],
);

someColumn.children.add(Text('Hello 123'));