Flutter camera plugin not importing/useable - dart

Question

I am getting the following error when beginning to implement the camera plugin on my flutter app:
[VERBOSE-2:dart_error.cc(16)] Unhandled exception:
MissingPluginException(No implementation found for method init on channel plugins.flutter.io/camera)
#0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:153:7)
<asynchronous suspension>
#1 _channel (package:camera/camera.dart:7:5)
#2 _channel (package:camera/camera.dart:6:21)
#3 availableCameras (package:camera/camera.dart:42:41)
<asynchronous suspension>
#4 main (file:///Users/waynerumble/Desktop/scott_and_viki/lib/main.dart:10:19)
<asynchronous suspension>
#5 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:279:19)
#6 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)
[VERBOSE-2:dart_error.cc(16)] Unhandled exception:
MissingPluginException(No implementation found for method list on channel plugins.flutter.io/camera)
#0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:153:7)
<asynchronous suspension>
#1 availableCameras (package:camera/camera.dart:42:50)
<asynchronous suspension>
#2 main (file:///Users/waynerumble/Desktop/scott_and_viki/lib/main.dart:10:19)
<asynchronous suspension>
#3 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:279:19)
#4 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)
The error doesn't occur until i start using the plugin itself, i.e. if i replace Future<null> main() etc with void main() => runApp(new App()); the app runs fine. I've followed install instructions from the link provided and tried pasting in all the example incode in place of mine but still get the errors
My main.dart:
import 'package:flutter/material.dart';
import 'Localisations.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'dart:async';
import 'package:camera/camera.dart';
List<CameraDescription> cameras;
Future<Null> main() async {
cameras = await availableCameras();
runApp(new App());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
var statusBarHeight = MediaQuery.of(context).padding.top;
var titleText = new Text(Localize.of(context).appTitle,
textAlign: TextAlign.center,
style: new TextStyle(fontFamily: 'CallingAngelsPersonalUse',
fontSize: 50.0,
color: Colors.black)
);
var backgroundImage = new BoxDecoration(
image: new DecorationImage(
image: new AssetImage('assets/background.png'),
fit: BoxFit.cover,
),
);
var mainContainer = new Container(
padding: EdgeInsets.only(top: statusBarHeight),
height: double.infinity,
width: double.infinity,
decoration: backgroundImage,
child: new Column(
children: <Widget>[
new Container(
margin: EdgeInsets.only(top: 10.0),
child: titleText
)
],
),
);
return new Scaffold(
body: mainContainer,
);
}
}
class App extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
onGenerateTitle: (BuildContext context) => Localize.of(context).appTitle,
localizationsDelegates: [
const LocalizeDelegate(),
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
],
supportedLocales: [
const Locale('en', '')
],
home: new MyApp(),
);
}
}
My pubspec.yml:
dependencies:
flutter:
sdk: flutter
camera: ^0.1.2
path_provider: ^0.4.0
flutter_localizations:
sdk: flutter
This is my first real flutter app so any help would be appreciated.
Thanks

Answer 1

first check your app.build minSdkVersion.make sure minSdkVersion is 21.
minSdkVersion 21
here code example.
List<CameraDescription> cameras = [];
main() async{
WidgetsFlutterBinding.ensureInitialized();
try {
cameras = await availableCameras();
} on CameraException catch (e) {
logError(e.code, e.description);
}
runApp(MyApp());
}