Need help in making a reusable widget in flutter

Question

So I am making an app with flutter. So in the main.dart file i am making a component which is basically a bunch of widgets wrapped together. I have to use this component multiple times so I thought of making these reusable component in another dart file and then importing it in main.dart.

This is my code for reusable.dart

import 'package:flutter/material.dart';
double mainTab = 150;
class TileData extends StatefulWidget {
  @override
  _TileDataState createState() => _TileDataState();
}
class _TileDataState extends State<TileData> {
  @override
  Widget build(BuildContext context) {
    return Container(
      height: 200 - 15.0,
      width: mainTab - 10.0,
      child: Padding(
        padding: const EdgeInsets.fromLTRB(10, 15, 0, 0),
        child: Column(
        ),
      ),
    );
  }
}

I plan to use this TileData Widget in my main.dart in this manner

ListView(
   children: children: <Widget>[
      TileData(
          children: <Widget>[
               Text('Element 1'),
]),
      TileData(
          children: <Widget>[
               Text('Element 2'),
]),
      TileData(
          children: <Widget>[
               Text('Element 3'),
],
)
],
),

So the children of the TileData() widget are actually the children of the column which was last wrapped in the widget in reusable.dart

Is there any way I can achieve this?

Solution 1

TileDate

import 'package:flutter/material.dart';
double mainTab = 150;
class TileData extends StatefulWidget {
  List<Widget> widgetsList;
  TileData({this.widgetsList});
  @override
  _TileDataState createState() => _TileDataState();
}
class _TileDataState extends State<TileData> {
  @override
  Widget build(BuildContext context) {
    return Container(
      height: 200 - 15.0,
      width: mainTab - 10.0,
      child: Padding(
        padding: const EdgeInsets.fromLTRB(10, 15, 0, 0),
        child: Column(
          children: widget.widgetsList,
        ),
      ),
    );
  }
}

main

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:test/widgets/TileData.dart';
void main() => runApp(MaterialApp(
      home: Scaffold(backgroundColor: Color(0xFF2d3447), body: MyApp()),
    ));
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ListView(
      children: [
        TileData(
          widgetsList: [Text("Element 1")],
        ),
        TileData(
          widgetsList: [Text("Element 2")],
        ),
        TileData(
          widgetsList: [Text("Element 3")],
        )
      ],
    );
  }
}

In this way u can reuse

Solution 2

Create a property and use it as an argument in the constructor of the reusable widget.

final List<Widget> children;
TileData({this.children});

Then, in your build method, pass the property to the column.

Column(
  children: widget.children
)