PlatformException(7, not initialized, null, null)

[xinoxapps]

Test the example on IOS results in the following error:

flutter: PlatformException(7, not initialized, null, null), #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:581:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:158:18)

#2 RtcEngine.createWithConfig (package:agora_rtc_engine/src/rtc_engine.dart:145:5)

#3 _State._initEngine (package:flutter_app_rtc/advanced/live_streaming.dart:86:11)

---

version: 1.0.0+1

environment:
sdk: ">=2.7.0 <3.0.0"

dependencies:
flutter:
sdk: flutter

permission_handler: ^7.1.0
agora_rtc_engine: ^4.0.0-rc.3

---

Any help?

[plutoless]

it seems you are trying to call apis before sdk is properly initialized. have you tried using our quickstart example?

[Manishmg3994]

it seems you are trying to call apis before sdk is properly initialized. have you tried using our quickstart example?
YES I am and at at a very Such level which can't be explained So please provide me Source code which works fine or just tell me the source codes for a audio and a video call as first it show a black screen issue then starts error PlatformException(7, not initialized, null, null) agora engine exception and these exceptions are out of my mind so please refer me a better documentation for just a simple audio and video call source code

[LichKing-2234]

https://pub.dev/packages/agora_rtc_engine/example

[Manishmg3994]

**FLUTTER PROJECT**That error resolved ,but now need a better documentation for token generation via cloud functions (firebase)

…

On 27-Jan-2022 2:22 pm, "Arthas" ***@***.***> wrote: https://pub.dev/packages/agora_rtc_engine/example — Reply to this email directly, view it on GitHub <#316 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AU5CDKSF4JOXABMYU3645ZLUYDQB3ANCNFSM44RMSYCQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: ***@***.***>

[plutoless]

@Manishmg3994
you can find all types of token gen language samples here
https://github.com/AgoraIO/Tools/tree/master/DynamicKey/AgoraDynamicKey
migrating these to any cloud functions should be easy.

[ve-tarun]

[ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(7, not initialized, null, null)
E/flutter (10269): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
E/flutter (10269): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:167:18)
E/flutter (10269):
E/flutter (10269): #2 RtcEngine.createWithContext (package:agora_rtc_engine/src/rtc_engine.dart:161:5)
E/flutter (10269):
E/flutter (10269): #3 _CallingState._initAgoraRtcEngine (package:chat/Screens/call.dart:62:15)
E/flutter (10269):
E/flutter (10269): #4 _CallingState.initialize (package:chat/Screens/call.dart:52:5)
haviing the same issue please hep
E/flutter (10269):
class Calling extends StatefulWidget {

const Calling({
Key? key,
}) : super(key: key);

@OverRide
_CallingState createState() => _CallingState();
}

class _CallingState extends State {
static final _users = [];
final _infoStrings = [];
bool muted = false;
late RtcEngine _engine;

@OverRide
void dispose() {
// clear users
_users.clear();
// destroy sdk
_engine.leaveChannel();
_engine.destroy();
super.dispose();
}

@OverRide
void initState() {
super.initState();
// initialize agora sdk
initialize();
}

Future initialize() async {
await _initAgoraRtcEngine();
_addAgoraEventHandlers();
await _engine.enableAudioVolumeIndication(200, 3, true);
await _engine.joinChannel(token, "tarun", null, 0);
await _engine.enableDualStreamMode(true);

}

/// Create agora sdk instance and initialize
Future _initAgoraRtcEngine() async {
_engine = await RtcEngine.create(appId);
//await _engine.disableVideo();
await _engine.enableAudio();
await _engine.enableVideo();
}

/// Add agora event handlers
void _addAgoraEventHandlers() {
_engine.setEventHandler(RtcEngineEventHandler(
activeSpeaker: (uid) {
final String info = "Active speaker: $uid";
print(info);
},
error: (code) {
setState(() {
final info = 'onError: $code';
_infoStrings.add(info);
});
},
joinChannelSuccess: (channel, uid, elapsed) {
setState(() {
final info = 'onJoinChannel: $channel, uid: $uid';
_infoStrings.add(info);
});
},
leaveChannel: (stats) {
setState(() {
_infoStrings.add('onLeaveChannel');
_users.clear();
});
},
userJoined: (uid, elapsed) {
setState(() {
final info = 'userJoined: $uid';
_infoStrings.add(info);
_users.add(uid);
});
if (_users.length >= 5) {
print("Fallback to Low quality video stream");
_engine.setRemoteDefaultVideoStreamType(VideoStreamType.Low);
}
},
userOffline: (uid, reason) {
setState(() {
final info = 'userOffline: $uid , reason: $reason';
_infoStrings.add(info);
_users.remove(uid);
});
if (_users.length <= 3) {
print("Go back to High quality video stream");
_engine.setRemoteDefaultVideoStreamType(VideoStreamType.High);
}
},
));
}

/// Toolbar layout
Widget _toolbar() {
return Container(
alignment: Alignment.bottomCenter,
padding: const EdgeInsets.symmetric(vertical: 48),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
RawMaterialButton(
onPressed: _onToggleMute,
child: Icon(
muted ? Icons.mic_off : Icons.mic,
color: muted ? Colors.white : Colors.blueAccent,
size: 20.0,
),
shape: CircleBorder(),
elevation: 2.0,
fillColor: muted ? Colors.blueAccent : Colors.white,
padding: const EdgeInsets.all(12.0),
),
RawMaterialButton(
onPressed: () => _onCallEnd(context),
child: Icon(
Icons.call_end,
color: Colors.white,
size: 35.0,
),
shape: CircleBorder(),
elevation: 2.0,
fillColor: Colors.redAccent,
padding: const EdgeInsets.all(15.0),
),
RawMaterialButton(
onPressed: _onSwitchCamera,
child: Icon(
Icons.switch_camera,
color: Colors.blueAccent,
size: 20.0,
),
shape: CircleBorder(),
elevation: 2.0,
fillColor: Colors.white,
padding: const EdgeInsets.all(12.0),
)
],
),
);
}

@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Agora Group Video Calling'),
),
backgroundColor: Colors.black,
body: Center(
child: Stack(
children: [
_viewRows(),
_toolbar(),
],
),
),
);
}

/// Helper function to get list of native views
List _getRenderViews() {
final List list = [];
list.add(rtc_local_view.SurfaceView());
_users.forEach(
(int uid) => list.add(
rtc_remote_view.SurfaceView(
uid: uid,
),
),
);
return list;
}

/// Video view wrapper
Widget _videoView(view) {
return Expanded(child: Container(child: view));
}

/// Video view row wrapper
Widget _expandedVideoRow(List views) {
final wrappedViews = views.map(_videoView).toList();
return Expanded(
child: Row(
children: wrappedViews,
),
);
}

/// Video layout wrapper
Widget _viewRows() {
final views = _getRenderViews();
if (views.length == 1) {
return Container(
child: Column(
children: [_videoView(views[0])],
),
);
} else if (views.length == 2) {
return Container(
child: Column(
children: [
_expandedVideoRow([views[0]]),
_expandedVideoRow([views[1]])
],
));
} else if (views.length > 2 && views.length % 2 == 0) {
return Container(
child: Column(
children: [
for (int i = 0; i < views.length; i = i + 2)
_expandedVideoRow(
views.sublist(i, i + 2),
),
],
),
);
} else if (views.length > 2 && views.length % 2 != 0) {
return Container(
child: Column(
children: [
for (int i = 0; i < views.length; i = i + 2)
i == (views.length - 1)
? _expandedVideoRow(views.sublist(i, i + 1))
: _expandedVideoRow(views.sublist(i, i + 2)),
],
),
);
}
return Container();
}

void _onCallEnd(BuildContext context) {
Navigator.pop(context);
}

void _onToggleMute() {
setState(() {
muted = !muted;
});
_engine.muteLocalAudioStream(muted);
}

void _onSwitchCamera() {
_engine.switchCamera();
}
}

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