include flat button

main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Blink LED',
      theme: new ThemeData(
        
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(title: 'Blink LED Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);


 

  final String title;


  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  double _sliderValue = 0.0;
  String _status = "";
  String _btnText = "LED-";
  String url = 'http://192.168.4.1:80/steinacoz';
  var response;

  //function to make http requests
  Future<String> ledRequest() async {
    response = await http.get(url + '/led', headers: {"Accept": "plain/text"});

    setState(() {
      _status = response.body;
      print(response.body);
    });

  }

   @override
  Widget build(BuildContext context) {
    
    return new Scaffold(
      appBar: new AppBar(
        
        title: new Text(widget.title),
      ),
      body: new Center(
        

        child: new Column(
          
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            //create a text
            new Text(
              'My LED ',
              style: Theme.of(context).textTheme.display1,
            ),
            
            //create a raised button
            new RaisedButton(
                onPressed: ledRequest,
                textColor: Colors.white,
                disabledColor: Colors.black12,
                disabledTextColor: Colors.brown,
                splashColor: Colors.redAccent,
                elevation: 2.0,
                highlightElevation: 8.0,
                animationDuration: kThemeChangeDuration,
                child: new Text(_btnText + _status),
                ),

     
      floatingActionButton: new FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: new Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}