webview_flutter_tizen

The Tizen implementation of webview_flutter for Tizen TV devices.

The WebView widget is backed by the device's native web engine, either EFL WebKit (EWK) or the newer WV API. See Web engine backend.

Required privileges

To use this plugin, add below lines under the <manifest> section in your tizen-manifest.xml file.

<privileges>
  <privilege>http://tizen.org/privilege/internet</privilege>
</privileges>

Usage

This package is not an endorsed implementation of webview_flutter. Therefore, you have to include webview_flutter_tizen alongside webview_flutter as dependencies in your pubspec.yaml file.

dependencies:
  webview_flutter: ^4.14.1
  webview_flutter_tizen: ^0.12.0

Example

import 'package:webview_flutter/webview_flutter.dart';

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

  @override
  State<WebViewExample> createState() => _WebViewExampleState();
}

class _WebViewExampleState extends State<WebViewExample> {
  final WebViewController _controller = WebViewController();

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

    _controller.loadRequest(Uri.parse('https://flutter.dev'));
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: WebViewWidget(controller: _controller),
    );
  }
}

Supported devices

This plugin is only supported on Tizen TV devices running Tizen 5.5 or later.

Web engine backend

The plugin chooses a backend from the platform version reported by the device:

Tizen version	Backend
10.0 and earlier	EFL WebKit (EWK)
10.1	WV API, EWK wrapper mode
11.0 and later	WV API, standalone mode

The WV backends are experimental. WebViewController.tizenEnginePolicy calls wv_set_version_policy() before WV engine initialization. The first WV view's setting applies to the engine for its lifetime.

Cookies

• WebViewCookieManager.getCookies calls the EWK or WV cookie getter. On the EWK backend (Tizen 10.0 and earlier), the getter currently returns no cookies because of an engine defect.
• WebViewCookieManager.setCookie uses the WV cookie manager. EWK has no cookie setter, so it throws UnimplementedError on the EWK backend.
• Cookie operations need a WebView that has been created, and fail before the first one is.

Note

• To play Youtube, make app's background color to transparent.

--- a/packages/webview_flutter/example/lib/main.dart
+++ b/packages/webview_flutter/example/lib/main.dart
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-       backgroundColor: Colors.green,
+       backgroundColor: Colors.transparent,
       appBar: AppBar(
         title: const Text('Flutter WebView example'),

• In Tizen 6.0, there were some devices that failed to create the web view. In this case, the creation failure is resolved by using the Upgrade Web Engine (UWE) internally. If you set the WebViewController.tizenEnginePolicy extension API to true before creating the WebviewWidget, the webview will internally search for another version of the engine. However, this API can be changed(or removed) at any time and is not officially guaranteed to work.

import 'package:webview_flutter_tizen/webview_flutter_tizen.dart';

WebViewController _controller;
_controller.tizenEnginePolicy = true;

• The setVerticalScrollBarEnabled and setHorizontalScrollBarEnabled methods are not independently controllable. Calling either method will affect both vertical and horizontal scrollbars simultaneously. If you need to hide scrollbars, call only one of these methods with false. Setting different values for each scrollbar (e.g., vertical enabled but horizontal disabled) is not supported. Note that these methods are currently not supported on TV devices. We are working on adding support in the near future.

// This will hide both vertical and horizontal scrollbars
await controller.setVerticalScrollBarEnabled(false);

// This will show both vertical and horizontal scrollbars
await controller.setHorizontalScrollBarEnabled(true);