Masterarbeit/lib/pages/SideBarContent.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'dart:async';

class SideBarContent extends StatefulWidget {
  final String html;
  final String title;

  SideBarContent({this.title, this.html});

  @override
  SideBarContentState createState() {
    return new SideBarContentState();
  }
}

class SideBarContentState extends State<SideBarContent> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('${widget.title}'),
        ),
        body: SafeArea(
            child: FutureBuilder<String>(
                future: LocalLoader().loadLocal(widget.html),
                builder: (context, snapshot) {
                  if (snapshot.hasData) {
                    return WebView(
                      // HTML code loaded from file
                      initialUrl: new Uri.dataFromString(snapshot.data,
                              mimeType: 'text/html')
                          .toString(),
                      javascriptMode: JavascriptMode.unrestricted,
                    );
                  } else if (snapshot.hasError) {
                    return Text("Error trying to load HTML FIle: ${snapshot.error}");
                  } else {
                    return Container();
                  }
                })));
  }
}

class LocalLoader {
  Future<String> loadLocal(String html) async {
    String response = await rootBundle.loadString(html);
//    return await rootBundle.loadString('assets/yourFile.html');
    return response;
  }
}