webview_flutter 3.0.0问题解决( onWebViewCreated )

Question

问题所在

我使用的是web视图flutter 3.0.0，它不想为(在Web视图上创建)接受任何东西。。。所以如果有人能解决我要感恩

Answer 1

  android {
    defaultConfig {
        minSdkVersion 19
    }
}
Using Virtual displays 
Set the correct minSdkVersion in android/app/build.gradle (if it was previously lower than 20):

 android {
     defaultConfig {
         minSdkVersion 20
     }
 }
Set WebView.platform = AndroidWebView(); in initState(). For example:

 import 'dart:io';

 import 'package:webview_flutter/webview_flutter.dart';

 class WebViewExample extends StatefulWidget {
   @override
   WebViewExampleState createState() => WebViewExampleState();
 }

 class WebViewExampleState extends State<WebViewExample> {
   @override
   void initState() {
     super.initState();
     // Enable virtual display.
     if (Platform.isAndroid) WebView.platform = AndroidWebView();
   }

   @override
   Widget build(BuildContext context) {
     return WebView(
       initialUrl: 'https://flutter.dev',
     );
   }
 }

Answer 2

删除WebView小部件之前的const关键字。