flutter-go/lib/routers/router_handler.dart

import 'package:flutter/material.dart';
import 'package:fluro/fluro.dart';
import '../views/category.dart';
import '../widgets/404.dart';
import '../common/full_screen_code_dialog.dart';
import '../views/web_view_page.dart';

var categoryHandler = new Handler(
  handlerFunc: (BuildContext context, Map<String, List<String>> params) {
    String name = params["type"]?.first;

    return new CategoryHome(name);
  },
);

var widgetNotFoundHandler = new Handler(
    handlerFunc: (BuildContext context, Map<String, List<String>> params) {
  return new WidgetNotFound();
});

var fullScreenCodeDialog = new Handler(
    handlerFunc: (BuildContext context, Map<String, List<String>> params) {
  String path = params['filePath']?.first;
  return new FullScreenCodeDialog(
    filePath: path,
  );
});

var webViewPageHand = new Handler(
    handlerFunc: (BuildContext context, Map<String, List<String>> params) {
  String title = params['title']?.first;
  String url = params['url']?.first;
  return new WebViewPage(url, title);
});