Pull-To-Refresh Controller

PullToRefreshController represents the controller used by the WebView to manage the pull-to-refresh feature.

Basic Usage

Create a new instance of PullToRefreshController using your custom PullToRefreshSettings and set the onRefresh callback, that is an event called when a pull-to-refresh is detected. So, put your custom logic inside the callback.

To start using it, assign the instance to the WebView pullToRefreshController property.

Use the endRefreshing() method to end the refresh operation.

Example:

import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();

  if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
    await InAppWebViewController.setWebContentsDebuggingEnabled(kDebugMode);
  }

  runApp(const MaterialApp(home: MyApp()));
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final GlobalKey webViewKey = GlobalKey();

  InAppWebViewController? webViewController;
  InAppWebViewSettings settings =
      InAppWebViewSettings(isInspectable: kDebugMode);
  PullToRefreshController? pullToRefreshController;
  PullToRefreshSettings pullToRefreshSettings = PullToRefreshSettings(
    color: Colors.blue,
  );
  bool pullToRefreshEnabled = true;

  @override
  void initState() {
    super.initState();

    pullToRefreshController = kIsWeb
        ? null
        : PullToRefreshController(
            settings: pullToRefreshSettings,
            onRefresh: () async {
              if (defaultTargetPlatform == TargetPlatform.android) {
                webViewController?.reload();
              } else if (defaultTargetPlatform == TargetPlatform.iOS) {
                webViewController?.loadUrl(
                    urlRequest:
                        URLRequest(url: await webViewController?.getUrl()));
              }
            },
          );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Pull-to-refresh Controller'),
          actions: [
            TextButton(
                onPressed: () async {
                  pullToRefreshEnabled = !pullToRefreshEnabled;
                  await pullToRefreshController
                      ?.setEnabled(pullToRefreshEnabled);
                  setState(() {});
                },
                style: TextButton.styleFrom(foregroundColor: Colors.white),
                child: Text(pullToRefreshEnabled ? 'Disable' : 'Enable'))
          ],
        ),
        body: Column(children: <Widget>[
          Expanded(
              child: InAppWebView(
            key: webViewKey,
            initialUrlRequest:
                URLRequest(url: WebUri("https://github.com/flutter/")),
            initialSettings: settings,
            pullToRefreshController: pullToRefreshController,
            onWebViewCreated: (InAppWebViewController controller) {
              webViewController = controller;
            },
            onLoadStop: (controller, url) {
              pullToRefreshController?.endRefreshing();
            },
            onReceivedError: (controller, request, error) {
              pullToRefreshController?.endRefreshing();
            },
            onProgressChanged: (controller, progress) {
              if (progress == 100) {
                pullToRefreshController?.endRefreshing();
              }
            },
          )),
        ]));
  }
}

This is the result:

Android

iOS