import 'dart:io'; import 'dart:math'; import 'dart:typed_data'; import 'package:flutter/material.dart'; import 'package:nearby_connections/nearby_connections.dart'; import 'package:image_picker/image_picker.dart'; void main() => runApp(MyApp()); class MyApp extends StatefulWidget { @override _MyAppState createState() => _MyAppState(); } class _MyAppState extends State { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('Plugin example app'), ), body: Body(), ), ); } } class Body extends StatefulWidget { @override _MyBodyState createState() => _MyBodyState(); } class _MyBodyState extends State { final String userName = Random().nextInt(1000).toString(); final Strategy strategy = Strategy.P2P_STAR; String cId = "0"; @override Widget build(BuildContext context) { return Center( child: Column( children: [ RaisedButton( child: Text("checkPermission"), onPressed: () async { if (await Nearby().checkPermissions()) { Scaffold.of(context) .showSnackBar(SnackBar(content: Text("yes"))); } else { Scaffold.of(context) .showSnackBar(SnackBar(content: Text("No"))); } }, ), RaisedButton( child: Text("askPermission(location)"), onPressed: () async { await Nearby().askPermission(); }, ), Text("UserName: " + userName), RaisedButton( child: Text("Start Advertising"), onPressed: () async { try { bool a = await Nearby().startAdvertising( userName, strategy, onConnectionInitiated: (id, info) { oci(id, info); }, onConnectionResult: (id, status) { showSnackbar(status); }, onDisconnected: (id) { showSnackbar(id); }, ); showSnackbar(a); } catch (exception) { showSnackbar(exception); } }, ), RaisedButton( child: Text("Stop Advertising"), onPressed: () async { await Nearby().stopAdvertising(); }, ), RaisedButton( child: Text("Start Discovery"), onPressed: () async { try { bool a = await Nearby().startDiscovery( userName, strategy, onEndpointFound: (id, name, serviceId) { print("in callback"); showModalBottomSheet( context: context, builder: (builder) { return Center( child: Column( children: [ Text("id: " + id), Text("Name: " + name), Text("ServiceId: " + serviceId), RaisedButton( child: Text("Request Connection"), onPressed: () { Navigator.pop(context); Nearby().requestConnection( userName, id, onConnectionInitiated: (id, info) { oci(id, info); }, onConnectionResult: (id, status) { showSnackbar(status); }, onDisconnected: (id) { showSnackbar(id); }, ); }, ), ], ), ); }, ); }, onEndpointLost: (id) { showSnackbar(id); }, ); showSnackbar(a); } catch (e) { showSnackbar(e); } }, ), RaisedButton( child: Text("Stop Discovery"), onPressed: () async { await Nearby().stopDiscovery(); }, ), RaisedButton( child: Text("Stop All Endpoints"), onPressed: () async { await Nearby().stopAllEndpoints(); }, ), RaisedButton( child: Text("Send Random Bytes Payload"), onPressed: () async { String a = Random().nextInt(100).toString(); showSnackbar("Sending $a to $cId"); Nearby().sendBytesPayload(cId, Uint8List.fromList(a.codeUnits)); }, ), RaisedButton( child: Text("Send File Payload"), onPressed: () async { File file = await ImagePicker.pickImage(source: ImageSource.gallery); if (file == null) return; Nearby().sendFilePayload(cId, file.path); showSnackbar("Sending file to $cId"); }, ), ], ), ); } void showSnackbar(dynamic a) { Scaffold.of(context).showSnackBar(SnackBar( content: Text(a.toString()), )); } /// Called on a Connection request (on both devices) void oci(String id, ConnectionInfo info) { showModalBottomSheet( context: context, builder: (builder) { return Center( child: Column( children: [ Text("id: " + id), Text("Token: " + info.authenticationToken), Text("Name" + info.endpointName), Text("Incoming: " + info.isIncomingConnection.toString()), RaisedButton( child: Text("Accept Connection"), onPressed: () { Navigator.pop(context); cId = id; Nearby().acceptConnection( id, onPayLoadRecieved: (endid, payload) { if (payload.type == PayloadType.BYTES) { showSnackbar( endid + ": " + String.fromCharCodes(payload.bytes)); } else if (payload.type == PayloadType.FILE) { showSnackbar(endid + ": File transfer started"); } }, onPayloadTransferUpdate: (endid, payloadTransferUpdate) { if (payloadTransferUpdate.status == PayloadStatus.IN_PROGRRESS) { print(payloadTransferUpdate.bytesTransferred); } else if (payloadTransferUpdate.status == PayloadStatus.FAILURE) { print("failed"); showSnackbar(endid + ": FAILED to transfer file"); } else if (payloadTransferUpdate.status == PayloadStatus.SUCCESS) { print( "success, total bytes = ${payloadTransferUpdate.totalBytes}"); showSnackbar(endid + ": SUCCESS in file transfer (file is un-named in downloads) "); } }, ); }, ), RaisedButton( child: Text("Reject Connection"), onPressed: () async { Navigator.pop(context); try { await Nearby().rejectConnection(id); } catch (e) { showSnackbar(e); } }, ), ], ), ); }, ); } }