aug5_ON_or_OFF_toast

// ScaffoldMessenger working well
// shows if Bluetooth is on or off

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

import './SelectBondedDevicePage.dart';

void main() => runApp(const MaterialApp(
  debugShowCheckedModeBanner: false,
  home: Home(),
));

class Home extends StatelessWidget {
  const Home({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    FlutterBlue flutterBlue = FlutterBlue.instance;
    return Scaffold(
      appBar: AppBar(
        title: Wrap(
          direction: Axis.horizontal,
          crossAxisAlignment: WrapCrossAlignment.center,
          children: const <Widget>[
            Icon(
              Icons.bluetooth,
              //color : Colors.blue,
            ),
            Text(
              'My BLE',
              //style : TextStyle(color : Colors.white),
            ),
          ],
        ),
        centerTitle: true,
        //backgroundColor: Colors.black,
        backgroundColor: Colors.white54,
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          children: [
            Padding(
              padding: const EdgeInsets.all(15.0),
              child: ElevatedButton(
                onPressed: () async {
                  bool isOn = await flutterBlue.isOn;
                  // print(
                  //       'you pressed button',
                  //       // style: TextStyle(
                  //       //   color: Colors.red,
                  //       // ),
                  //     );
                  // ScaffoldMessenger.of(context).showSnackBar(
                  //     const SnackBar(content: Text('you pressed button')));
                  // bool isSupport = await flutterBlue.isAvailable;
                  // bool isOn = await flutterBlue.isOn;
                  if (isOn == true) {
                    ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('bluetooth is ON'))
                    );
                    // // Start scanning
                    // flutterBlue.startScan(timeout: Duration(seconds: 10));
                    // // Listen to scan results
                    // var subscription =
                    // flutterBlue.scanResults.listen((results) {
                    //   // do something with scan results
                    //   for (ScanResult r in results) {
                    //     // print(
                    //     //   '${r.device.name} found! rssi: ${r.rssi}',
                    //     //   // style: TextStyle(
                    //     //   //   color: Colors.red,
                    //     //   //   fontSize: 20,
                    //     //   //   fontWeight: FontWeight.bold,
                    //     //   // ),
                    //     // );
                    //
                    //   }
                    //   // Stop scanning
                    //   flutterBlue.stopScan();
                    // });
                  } else if (isOn == false) {
                    //  print(
                    //   'Turn on Bluetooth',
                    //   // style: TextStyle(
                    //   //   color: Colors.white,
                    //   //   fontSize: 20,
                    //   //   fontWeight: FontWeight.bold,
                    //   // ),
                    // );
                    ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('bluetooth is OFF')));
                  }
                  // Stop scanning
                  flutterBlue.stopScan();
                },
                child: Text('Connect to paired device to chat'),
                style: ElevatedButton.styleFrom(
                  primary: Colors.grey,
                  padding: EdgeInsets.symmetric(horizontal: 30, vertical: 20),
                ),
              ),
            ),
          ],
        ),
      ),
      backgroundColor: Colors.grey[800],
    );
  }
}