tower_mobile/lib/Screens/Menu/Dashboard/dashboard_screen.dart

import 'package:tower_app/constants.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:progress_dialog_null_safe/progress_dialog_null_safe.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'dart:developer' as logDev;

import '../../background.dart';

class DashboardScreen extends StatefulWidget {
  const DashboardScreen({Key? key}) : super(key: key);

  @override
  State<DashboardScreen> createState() => _DashboardScreen();
}

class _DashboardScreen extends State<DashboardScreen> {
  WebViewController controller = WebViewController();

  int user_id = 0;

  @override
  initState() {
    super.initState();
    getUserID();
   /* WidgetsBinding.instance.addPostFrameCallback((_) async {

    });*/
  }

  getUserID() async {
    ProgressDialog loading = ProgressDialog(context);
    loading = ProgressDialog(context,
        type: ProgressDialogType.normal, isDismissible: false, showLogs: true);
    loading.style(
        message: 'Please Wait .....',
        borderRadius: 3,
        backgroundColor: Colors.white,
        progressWidget: CircularProgressIndicator(),
        elevation: 10.0,
        padding: EdgeInsets.all(10),
        insetAnimCurve: Curves.easeInOut,
        progress: 0.0,
        maxProgress: 100.0,
        progressTextStyle: TextStyle(
            color: Colors.black, fontSize: 10.0, fontWeight: FontWeight.w400),
        messageTextStyle: TextStyle(
            color: Colors.black, fontSize: 15.0, fontWeight: FontWeight.w600));

    await loading.show();

    final SharedPreferences prefs = await SharedPreferences.getInstance();
    user_id = prefs.getInt('user_id')!;
    logDev.log(user_id.toString(), name: "user id??");

    setState(() {
      controller = WebViewController()
        ..setJavaScriptMode(JavaScriptMode.unrestricted)
        ..setBackgroundColor(const Color(0x00000000))
        ..setNavigationDelegate(
          NavigationDelegate(
            onProgress: (int progress) {
              // Update loading bar.
            },
            onPageStarted: (String url) {},
            onPageFinished: (String url) {},
            onWebResourceError: (WebResourceError error) {},
            onNavigationRequest: (NavigationRequest request) {
              if (request.url.startsWith('https://www.youtube.com/')) {
                return NavigationDecision.prevent;
              }
              return NavigationDecision.navigate;
            },
          ),
        )
        ..loadRequest(Uri.parse(baseURL + "/dashboard/" + user_id.toString()));
    });
    await loading.hide();
  }

  @override
  Widget build(BuildContext context) {
    var size = MediaQuery.of(context).size;
    return Scaffold(
      body: Stack(
          children: [
            Column(
              children: <Widget>[
                Stack(
                  children: [
                    WavyHeader(),
                    Container(
                        margin: EdgeInsets.only(
                            top: (size.height / 6) - 20),
                        padding: EdgeInsets.fromLTRB(0, 5, 25, 5),
                        child: Row(
                          mainAxisAlignment: MainAxisAlignment.end,
                          crossAxisAlignment: CrossAxisAlignment.end,
                          children: [
                            Text(
                              'DASHBOARD CANVASING\t\t',
                              maxLines: 1,
                              style: GoogleFonts.luckiestGuy(
                                fontSize: 28,
                                color: Color(0xFF4858A7),
                                fontStyle: FontStyle.italic,
                              ),
                            ),
                            Image.asset(
                              'assets/icons/menu/ic_history.png',
                              width: 40,
                              height: 40,
                            ),
                          ],
                        )
                    ),
                  ],
                ),
              ],
            ),
            Container(
              margin: EdgeInsets.only(top: (MediaQuery.of(context).size.height / 6) + 40,
                  left: 5, right: 5, bottom: 10),
              child: WebViewWidget(controller: controller),
            )
          ]),
    );
  }
}

alertDialogFailedRetrievedData(BuildContext context) {
  Widget okButton = TextButton(
    child: Text("Refresh"),
    onPressed: () {
      Navigator.of(context, rootNavigator: true).pop();
      Navigator.pushReplacement(
          context, MaterialPageRoute(builder: (context) => DashboardScreen()));
    },
  );

  Widget noButton = TextButton(
    child: Text("Back"),
    onPressed: () {
      Navigator.of(context, rootNavigator: true).pop();
      Navigator.pop(context);
    },
  );

  // set up the AlertDialog
  AlertDialog alert = AlertDialog(
    title: Text("Canvasing"),
    content: Text("Failed to Retrieve Data"),
    actions: [
      noButton,
      okButton,
    ],
  );

  // show the dialog
  showDialog(
    context: context,
    barrierDismissible: false,
    builder: (BuildContext context) {
      return alert;
    },
  );
}