java.lang.IllegalStateException：尝试创建未注册类型的平台视图：com.pichillilorenzo/flutter_inappwebview

Posted 2023-02-23

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【中文标题】java.lang.IllegalStateException：尝试创建未注册类型的平台视图：com.pichillilorenzo/flutter_inappwebview【英文标题】：java.lang.IllegalStateException: Trying to create a platform view of unregistered type: com.pichillilorenzo/flutter_inappwebview 【发布时间】：2020-08-12 12:35:15 【问题描述】：

我使用这个库来显示一个解析的 epub 文件，它支持显示 .css。 flutter_inappwebview.

        var doc = state.book.Chapters.last.htmlContent.split('<head>');
        var styledTML = "\n" +
            doc.first +
            "\n" +
            "<head>" +
            "<style>" +
            state.book.Content.Css['styles.css'].Content +
            "</style>" +
            doc.last;

        return Material(
          child: InAppWebView(
            onWebViewCreated: (controller) 
              controller.loadData(data: styledTML);
            ,
            initialOptions: InAppWebViewWidgetOptions(),
          ),
        );

此代码在 ios 上完美运行，但在 android 上出现错误：

E/flutter ( 7880): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: PlatformException(error, java.lang.IllegalStateException: Trying to create a platform view of unregistered type: com.pichillilorenzo/flutter_inappwebview
E/flutter ( 7880):  at io.flutter.plugin.platform.PlatformViewsController$1.createPlatformView(PlatformViewsController.java:91)
E/flutter ( 7880):  at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.create(PlatformViewsChannel.java:96)
E/flutter ( 7880):  at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.onMethodCall(PlatformViewsChannel.java:60)
E/flutter ( 7880):  at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:231)
E/flutter ( 7880):  at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:93)
E/flutter ( 7880):  at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:642)
E/flutter ( 7880):  at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter ( 7880):  at android.os.MessageQueue.next(MessageQueue.java:326)
E/flutter ( 7880):  at android.os.Looper.loop(Looper.java:160)
E/flutter ( 7880):  at android.app.ActivityThread.main(ActivityThread.java:6669)
E/flutter ( 7880):  at java.lang.reflect.Method.invoke(Native Method)
E/flutter ( 7880):  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/flutter ( 7880):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/flutter ( 7880): , null)
E/flutter ( 7880): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:569:7)
E/flutter ( 7880): #1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:321:33)
E/flutter ( 7880): <asynchronous suspension>
E/flutter ( 7880): #2      AndroidViewController._create (package:flutter/src/services/platform_views.dart:640:54)
E/flutter ( 7880): #3      AndroidViewController.setSize (package:flutter/src/services/platform_views.dart:557:14)
E/flutter ( 7880): #4      RenderAndroidView._sizePlatformView (package:flutter/src/rendering/platform_view.dart:174:29)
E/flutter ( 7880): #5      RenderAndroidView.performResize (package:flutter/src/rendering/platform_view.dart:155:5)
E/flutter ( 7880): #6      RenderObject.layout (package:flutter/src/rendering/object.dart:1703:9)
E/flutter ( 7880): #7      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
E/flutter ( 7880): #8      RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
E/flutter ( 7880): #9      RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
E/flutter ( 7880): #10     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1584:7)
E/flutter ( 7880): #11     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:844:18)
E/flutter ( 7880): #12     RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:344:19)
E/flutter ( 7880): #13     WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:774:13)
E/flutter ( 7880): #14     RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:283:5)
E/flutter ( 7880): #15     SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1102:15)
E/flutter ( 7880): #16     SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1041:9)
E/flutter ( 7880): #17     SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:957:5)
E/flutter ( 7880): #18     _rootRun (dart:async/zone.dart:1126:13)
E/flutter ( 7880): #19     _CustomZone.run (dart:async/zone.dart:1023:19)
E/flutter ( 7880): #20     _CustomZone.runGuarded (dart:async/zone.dart:925:7)
E/flutter ( 7880): #21     _invoke (dart:ui/hooks.dart:259:10)
E/flutter ( 7880): #22     _drawFrame (dart:ui/hooks.dart:217:3)
E/flutter ( 7880):

我试过flutter clean。重启IDE。我的项目是 AndroidX 项目，我在 Manifest 中放了 Internet 权限，我的项目超过 API 21，但它仍然崩溃。我怎样才能反映这个 HTML。我感谢您的时间和想法。谢谢

【问题讨论】：

我已经更新了我的插件flutter_inappwebview！现在您可以使用版本3.0.0+。最新版本是3.3.0。我有 3.3.0 仍然显示此错误。 【参考方案1】：

flutter clean

之后运行应用程序

【讨论】：

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