flutter [Only static members can be accessed in initializers] - flutter

Question

I am a true beginner in flutter and dart.
I have a problem concerning playing youtube videos using [ youtube_player_flutter: ^6.1.1]
I create a Json file with youtube links and I want to link it with [ youtube_player_flutter: ^6.1.1]. but it always displays the error message [Only static members can be accessed in initializers]
#override
Widget build(BuildContext context) {
// this function is called before the build so that
// the string assettoload is avialable to the DefaultAssetBuilder
setasset();
// and now we return the FutureBuilder to load and decode JSON
return FutureBuilder(
future:
DefaultAssetBundle.of(context).loadString(assettoload, cache: true),
builder: (context, snapshot) {
List mydata = json.decode(snapshot.data.toString());
if (mydata == null) {
return Scaffold(
body: Center(
child: Text(
"Loading",
),
),
);
} else {
return quizpage(mydata: mydata);
}
},
);
}
}
class quizpage extends StatefulWidget {
final dynamic mydata;
////////var youtubeUrl;
quizpage({Key key, #required this.mydata}) : super(key: key);
#override
_quizpageState createState() => _quizpageState(mydata);
}
class _quizpageState extends State<quizpage> {
var mydata;
_quizpageState(this.mydata);
int marks = 0;
int i = 1;
#override
void setState(fn) {
if (mounted) {
super.setState(fn);
}
}
YoutubePlayerController _controller;
#override
void initState() {
_controller = YoutubePlayerController(
initialVideoId: YoutubePlayer.convertUrlToId(mydata[4]["1"]));
super.initState();
}
void nextquestion() {
setState(() {
if (i < 10) {
i++;
} else {
Navigator.of(context).pushReplacement(MaterialPageRoute(
builder: (context) => resultpage(marks: marks),
));
}
The problem is that I want to make the [String videoURL ] plays the list of videos in my json data file.
Thanks in advance.

Answer 1

Possibility is that you coded the variable mydata twice. This is the format you should follow. And in order to make use of the variable from the StatefulWidget from the constructor, use widget.mydata. Don't have to declare it twice.
Code:
class Quizpage extends StatefulWidget {
final dynamic mydata;
quizpage({Key key, #required this.mydata}) : super(key: key);
#override
_QuizpageState createState() => _QuizpageState();
}
class _QuizpageState extends State<Quizpage> {
/*
You can make use of your mydata in this class like this:
widget.mydata, and you will be able to make it work
*/
Color colortoshow = Colors.indigoAccent;
Color right = Colors.green;
Color wrong = Colors.red;
int marks = 0;
int i = 1;
// String videoURL ="https://www.youtube.com/watch?v=2OAdfB2U88A&t=593s";
YoutubePlayerController _controller;
// Use like this to make use of your array mydata
String videoURL = widget.myData[4]["1"];
#override
void initState() {
_controller = YoutubePlayerController(
initialVideoId: YoutubePlayer.convertUrlToId(videoURL));
super.initState();
}
}
Also, this is for coding point of view. Please follow the correct way of naming classes in Flutter. Always use CamelCase or Have your first letter of the class as capital. This is the best practice while you write your code. I hope the above helps you in some sense. Thanks :)