Flutter：如何使 Web 视图大小适合屏幕？

Question

我是 flutter 新手，

尝试在 flutter 中使用 web view，但是 web view 的尺寸比屏幕大。

我想让网页大小适合 phone 屏幕大小。

我该怎么做？

这是我现在得到的：

我想看：

这是我的代码：

进口'package:flutter/material.dart';

进口'package:flutter_webview_plugin/flutter_webview_plugin.dart';

class CoursesInformation extends StatefulWidget {
  @override
  _WebViewExampleState createState() => _WebViewExampleState();
}

class _WebViewExampleState extends State<CoursesInformation> {
  TextEditingController controller = TextEditingController();
  FlutterWebviewPlugin flutterWebviewPlugin = FlutterWebviewPlugin();
  var urlString = "https://shoham.biu.ac.il/BiuCoursesViewer/MainPage.aspx";

  launchUrl() {
    setState(() {
      urlString = controller.text;
     flutterWebviewPlugin.reloadUrl(urlString);
       flutterWebviewPlugin.launch(urlString,
              rect: new Rect.fromLTWH(
                  0.0, 
                  0.0, 
                  MediaQuery.of(context).size.width, 
                  300.0));
    });
  }

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

    flutterWebviewPlugin.onStateChanged.listen((WebViewStateChanged wvs) {
      print(wvs.type);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Directionality(
    textDirection: TextDirection.rtl,
    child: WebviewScaffold(
      appBar: AppBar(
        title: Text('מידע על קורסים'),
        centerTitle: true
      ),
      url: urlString,
      withZoom: true,
      scrollBar: true,
      withJavascript: true,
      useWideViewPort: true,

      withLocalStorage: true,
        ));
  }
}

Answer 1

移除

useWideViewPort: true,

在 https://pub.dev/documentation/flutter_webview_plugin/latest/

阅读更多文档

现在看起来像

Answer 2

你可以试试我的插件flutter_inappwebview，这是一个 Flutter 插件，允许你添加内联 WebView 或打开应用内浏览器window，并且有很多事件、方法和控制 WebView 的选项。

在您的情况下，您可以通过选项 preferredContentMode: UserPreferredContentMode.DESKTOP

启用 DESKTOP 模式（就像在 Chrome 等普通浏览器上发生的那样）

这是您的 URL 的示例：

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

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(new MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  InAppWebViewController webView;

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

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('InAppWebView Example'),
        ),
        body: Container(
            child: Column(children: <Widget>[
          Expanded(
              child: InAppWebView(
            initialUrl:
                "https://shoham.biu.ac.il/BiuCoursesViewer/MainPage.aspx",
            initialHeaders: {},
            initialOptions: InAppWebViewGroupOptions(
              crossPlatform: InAppWebViewOptions(
                  debuggingEnabled: true,
                  preferredContentMode: UserPreferredContentMode.DESKTOP),
            ),
            onWebViewCreated: (InAppWebViewController controller) {
              webView = controller;
            },
            onLoadStart: (InAppWebViewController controller, String url) {

            },
            onLoadStop: (InAppWebViewController controller, String url) async {

            },
          ))
        ])),
      ),
    );
  }
}

截图如下：

Answer 3

我用了InAppWebView and it works for me. This will add a line like this to your package's pubspec.yaml`:

dependencies:
  flutter_inappwebview: ^5.3.2

例如：

return InAppWebView(
      initialOptions: InAppWebViewGroupOptions(
          android: AndroidInAppWebViewOptions(
              useHybridComposition: true,
              textZoom: 100 * 2 // it makes 2 times bigger
          )
      ),
      onWebViewCreated: (InAppWebViewController controller) {
        webViewController = controller;
      },
    );

如果你想把它变小，你只需要按如下方式划分:

textZoom: 100 / 2 // it makes 2 times smaller

Flutter：如何使 Web 视图大小适合屏幕？

Flutter: How to fit the web view size to screen?

webview

dart

flutter