Loc-Chain/nearby_connections
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working auto connect

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This commit is contained in:
Thomas Atkins 2021-04-11 01:20:55 -05:00
parent c21fa52248
commit e19633f846
3 changed files with 192 additions and 231 deletions
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405
example/lib/main.dart
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@ -2,6 +2,8 @@ import 'dart:io';
import 'dart:math';
import 'dart:typed_data';
import 'package:flutter_udid/flutter_udid.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:nearby_connections/nearby_connections.dart';
@ -33,14 +35,88 @@ class Body extends StatefulWidget {
}
class _MyBodyState extends State<Body> {
final String userName = Random().nextInt(10000).toString();
@override
void initState() {
super.initState();
WidgetsBinding.instance!.addPostFrameCallback((_) {
// _userName = await FlutterUdid.consistentUdid;
startAdver();
startDisco();
});
}
final String userName =
"00000 11111 22222 33333 44444 55555 66666 77777 88888 99999 aaaaa bbbbb ccccc ddddd eeeee"; // Random().nextInt(10000).toString();
final Strategy strategy = Strategy.P2P_STAR;
Map<String, ConnectionInfo> endpointMap = Map();
static String _userName = "";
File? tempFile; //reference to the file currently being transferred
Map<int, String> map =
Map(); //store filename mapped to corresponding payloadId
void startAdver() async {
try {
bool a = await Nearby().startAdvertising(
"adv" + userName,
strategy,
onConnectionInitiated: discoverOnConnectionInit,
onConnectionResult: (id, status) {
print("userName = $userName");
print("id = $id");
showSnackbar(status);
},
onDisconnected: (id) {
showSnackbar(
"Disconnected: ${endpointMap[id]!.endpointName}, id $id");
setState(() {
endpointMap.remove(id);
});
},
);
showSnackbar("ADVERTISING: " + a.toString());
} catch (exception) {
showSnackbar(exception);
}
}
void startDisco() async {
try {
bool a = await Nearby().startDiscovery(
"dis" + userName,
strategy,
onEndpointFound: (id, name, serviceId) {
print("userName = $userName");
print("id = $id");
Nearby().requestConnection(
userName,
id,
onConnectionInitiated: (id, info) {
discoverOnConnectionInit(id, info);
},
onConnectionResult: (id, status) {
showSnackbar(status);
},
onDisconnected: (id) {
setState(() {
endpointMap.remove(id);
});
showSnackbar(
"Disconnected from: ${endpointMap[id]!.endpointName}, id $id");
},
);
},
onEndpointLost: (id) {
showSnackbar(
"Lost discovered Endpoint: ${endpointMap[id]!.endpointName}, id $id");
},
);
showSnackbar("DISCOVERING: " + a.toString());
} catch (e) {
showSnackbar(e);
}
}
@override
Widget build(BuildContext context) {
return Center(
@ -48,117 +124,34 @@ class _MyBodyState extends State<Body> {
padding: const EdgeInsets.all(8.0),
child: ListView(
children: <Widget>[
Text(
"Permissions",
),
Wrap(
children: <Widget>[
ElevatedButton(
child: Text("checkLocationPermission"),
onPressed: () async {
if (await Nearby().checkLocationPermission()) {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Text("Location permissions granted :)")));
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content:
Text("Location permissions not granted :(")));
}
},
),
ElevatedButton(
child: Text("askLocationPermission"),
onPressed: () async {
if (await Nearby().askLocationPermission()) {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Text("Location Permission granted :)")));
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content:
Text("Location permissions not granted :(")));
}
},
),
ElevatedButton(
child: Text("checkExternalStoragePermission"),
onPressed: () async {
if (await Nearby().checkExternalStoragePermission()) {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content:
Text("External Storage permissions granted :)")));
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Text(
"External Storage permissions not granted :(")));
}
},
),
ElevatedButton(
child: Text("askExternalStoragePermission"),
onPressed: () {
Nearby().askExternalStoragePermission();
},
),
],
),
Divider(),
Text("Location Enabled"),
Wrap(
children: <Widget>[
ElevatedButton(
child: Text("checkLocationEnabled"),
onPressed: () async {
if (await Nearby().checkLocationEnabled()) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text("Location is ON :)")));
} else {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text("Location is OFF :(")));
}
},
),
ElevatedButton(
child: Text("enableLocationServices"),
onPressed: () async {
if (await Nearby().enableLocationServices()) {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: Text("Location Service Enabled :)")));
} else {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content:
Text("Enabling Location Service Failed :(")));
}
},
),
],
),
Divider(),
Text("User Name: " + userName),
Wrap(
children: <Widget>[
ElevatedButton(
child: Text("Start Advertising"),
onPressed: () async {
try {
bool a = await Nearby().startAdvertising(
userName,
strategy,
onConnectionInitiated: onConnectionInit,
onConnectionResult: (id, status) {
showSnackbar(status);
},
onDisconnected: (id) {
showSnackbar(
"Disconnected: ${endpointMap[id]!.endpointName}, id $id");
setState(() {
endpointMap.remove(id);
});
},
);
showSnackbar("ADVERTISING: " + a.toString());
} catch (exception) {
showSnackbar(exception);
}
// try {
// bool a = await Nearby().startAdvertising(
// "adv" + userName,
// strategy,
// onConnectionInitiated: discoverOnConnectionInit,
// onConnectionResult: (id, status) {
// print("userName = $userName");
// print("id = $id");
// showSnackbar(status);
// },
// onDisconnected: (id) {
// showSnackbar(
// "Disconnected: ${endpointMap[id]!.endpointName}, id $id");
// setState(() {
// endpointMap.remove(id);
// });
// },
// );
// showSnackbar("ADVERTISING: " + a.toString());
// } catch (exception) {
// showSnackbar(exception);
// }
},
),
ElevatedButton(
@ -176,45 +169,27 @@ class _MyBodyState extends State<Body> {
onPressed: () async {
try {
bool a = await Nearby().startDiscovery(
userName,
"dis" + userName,
strategy,
onEndpointFound: (id, name, serviceId) {
// show sheet automatically to request connection
showModalBottomSheet(
context: context,
builder: (builder) {
return Center(
child: Column(
children: <Widget>[
Text("id: " + id),
Text("Name: " + name),
Text("ServiceId: " + serviceId),
ElevatedButton(
child: Text("Request Connection"),
onPressed: () {
Navigator.pop(context);
Nearby().requestConnection(
userName,
id,
onConnectionInitiated: (id, info) {
onConnectionInit(id, info);
},
onConnectionResult: (id, status) {
showSnackbar(status);
},
onDisconnected: (id) {
setState(() {
endpointMap.remove(id);
});
showSnackbar(
"Disconnected from: ${endpointMap[id]!.endpointName}, id $id");
},
);
},
),
],
),
);
print("userName = $userName");
print("id = $id");
Nearby().requestConnection(
userName,
id,
onConnectionInitiated: (id, info) {
discoverOnConnectionInit(id, info);
},
onConnectionResult: (id, status) {
showSnackbar(status);
},
onDisconnected: (id) {
setState(() {
endpointMap.remove(id);
});
showSnackbar(
"Disconnected from: ${endpointMap[id]!.endpointName}, id $id");
},
);
},
@ -255,7 +230,8 @@ class _MyBodyState extends State<Body> {
child: Text("Send Random Bytes Payload"),
onPressed: () async {
endpointMap.forEach((key, value) {
String a = Random().nextInt(100).toString();
String a =
"00000 11111 22222 33333 44444 55555 66666 77777 88888 99999 aaaaa bbbbb ccccc ddddd eeeee"; //Random().nextInt(100).toString();
showSnackbar("Sending $a to ${value.endpointName}, id: $key");
Nearby()
@ -297,95 +273,64 @@ class _MyBodyState extends State<Body> {
/// Called upon Connection request (on both devices)
/// Both need to accept connection to start sending/receiving
void onConnectionInit(String id, ConnectionInfo info) {
showModalBottomSheet(
context: context,
builder: (builder) {
return Center(
child: Column(
children: <Widget>[
Text("id: " + id),
Text("Token: " + info.authenticationToken),
Text("Name" + info.endpointName),
Text("Incoming: " + info.isIncomingConnection.toString()),
ElevatedButton(
child: Text("Accept Connection"),
onPressed: () {
Navigator.pop(context);
setState(() {
endpointMap[id] = info;
});
Nearby().acceptConnection(
id,
onPayLoadRecieved: (endid, payload) async {
if (payload.type == PayloadType.BYTES) {
String str = String.fromCharCodes(payload.bytes!);
showSnackbar(endid + ": " + str);
void discoverOnConnectionInit(String id, ConnectionInfo info) {
setState(() {
endpointMap[id] = info;
});
Nearby().acceptConnection(
id,
onPayLoadRecieved: (endid, payload) async {
print(payload);
if (payload.type == PayloadType.BYTES) {
String str = String.fromCharCodes(payload.bytes!);
showSnackbar(endid + ": " + str);
if (str.contains(':')) {
// used for file payload as file payload is mapped as
// payloadId:filename
int payloadId = int.parse(str.split(':')[0]);
String fileName = (str.split(':')[1]);
if (str.contains(':')) {
// used for file payload as file payload is mapped as
// payloadId:filename
int payloadId = int.parse(str.split(':')[0]);
String fileName = (str.split(':')[1]);
if (map.containsKey(payloadId)) {
if (await tempFile!.exists()) {
tempFile!.rename(
tempFile!.parent.path + "/" + fileName);
} else {
showSnackbar("File doesn't exist");
}
} else {
//add to map if not already
map[payloadId] = fileName;
}
}
} else if (payload.type == PayloadType.FILE) {
showSnackbar(endid + ": File transfer started");
tempFile = File(payload.filePath!);
}
},
onPayloadTransferUpdate: (endid, payloadTransferUpdate) {
if (payloadTransferUpdate.status ==
PayloadStatus.IN_PROGRESS) {
print(payloadTransferUpdate.bytesTransferred);
} else if (payloadTransferUpdate.status ==
PayloadStatus.FAILURE) {
print("failed");
showSnackbar(endid + ": FAILED to transfer file");
} else if (payloadTransferUpdate.status ==
PayloadStatus.SUCCESS) {
showSnackbar(
"$endid success, total bytes = ${payloadTransferUpdate.totalBytes}");
if (map.containsKey(payloadId)) {
if (await tempFile!.exists()) {
tempFile!.rename(tempFile!.parent.path + "/" + fileName);
} else {
showSnackbar("File doesn't exist");
}
} else {
//add to map if not already
map[payloadId] = fileName;
}
}
} else if (payload.type == PayloadType.FILE) {
showSnackbar(endid + ": File transfer started");
tempFile = File(payload.filePath!);
}
},
onPayloadTransferUpdate: (endid, payloadTransferUpdate) {
if (payloadTransferUpdate.status == PayloadStatus.IN_PROGRESS) {
print(payloadTransferUpdate.bytesTransferred);
} else if (payloadTransferUpdate.status == PayloadStatus.FAILURE) {
print("failed");
showSnackbar(endid + ": FAILED to transfer file");
} else if (payloadTransferUpdate.status == PayloadStatus.SUCCESS) {
showSnackbar(
"$endid success, total bytes = ${payloadTransferUpdate.totalBytes}");
if (map.containsKey(payloadTransferUpdate.id)) {
//rename the file now
String name = map[payloadTransferUpdate.id]!;
tempFile!.rename(tempFile!.parent.path + "/" + name);
} else {
//bytes not received till yet
map[payloadTransferUpdate.id] = "";
}
}
},
);
},
),
ElevatedButton(
child: Text("Reject Connection"),
onPressed: () async {
Navigator.pop(context);
try {
await Nearby().rejectConnection(id);
} catch (e) {
showSnackbar(e);
}
},
),
],
),
);
if (map.containsKey(payloadTransferUpdate.id)) {
//rename the file now
String name = map[payloadTransferUpdate.id]!;
tempFile!.rename(tempFile!.parent.path + "/" + name);
} else {
//bytes not received till yet
map[payloadTransferUpdate.id] = "";
}
}
},
);
}
///
///
///
}

16
example/pubspec.lock
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@ -43,6 +43,13 @@ packages:
url: "https://pub.dartlang.org"
source: hosted
version: "1.15.0"
crypto:
dependency: transitive
description:
name: crypto
url: "https://pub.dartlang.org"
source: hosted
version: "3.0.1"
fake_async:
dependency: transitive
description:
@ -67,6 +74,13 @@ packages:
description: flutter
source: sdk
version: "0.0.0"
flutter_udid:
dependency: "direct main"
description:
name: flutter_udid
url: "https://pub.dartlang.org"
source: hosted
version: "2.0.0"
flutter_web_plugins:
dependency: transitive
description: flutter
@ -219,4 +233,4 @@ packages:
version: "2.1.0"
sdks:
dart: ">=2.12.0 <3.0.0"
flutter: ">=1.20.0"
flutter: ">=2.0.0"

2
example/pubspec.yaml
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@ -12,6 +12,8 @@ dependencies:
flutter:
sdk: flutter
image_picker: ^0.7.4
flutter_udid: ^2.0.0
nearby_connections:
# When depending on this package from a real application you should use:
# nearby_connections: ^x.y.z