How to Add Button Border Color in Flutter

In Flutter, button border color can enrich app user interface and makes an app elegant.

The code below illustrates how to add button border color in flutter.

It is based on Flutter version 1.0.0.

Main.dart (App entry point)

import 'package:flutter/material.dart';
import 'border_color_button.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      //home: MyHomePage(title: 'Flutter Demo Home Page'),
      home: BorderColorButton(),
    );
  }
}

border_color_button.dart

import 'package:flutter/material.dart';

class BorderColorButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
     return Scaffold(
        appBar: AppBar(
          title: Text('Border Color Button Example'),
        ),
        body: Center(
            child: OutlineButton(
          child: Text('Button to Click'),
          onPressed: () {}, //callback when button is clicked
          borderSide: BorderSide(
            color: Colors.red, //Color of the border
            style: BorderStyle.solid, //Style of the border
            width: 0.8, //width of the border
          ),
        )));
  }
}

flutter button border color

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