java.lang.IllegalStateException: Trying to create a platform view of unregistered type: com.pichillilorenzo/flutter_inappwebview

android flutter dart webview

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flutter clean

run the app afterwards

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Author by

Roman Soviak

When I was a child I played football for my village. I believe in the piece all over the world. I like to develop programs and in love with Android OS. I learn programming for myself with my friends. We stand around books, speak with each other, sing songs about life and develop programs.

Updated on December 19, 2022

Comments

Roman Soviak over 1 year

I use this library for showing a parsed epub file, which supports showing .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(),
          ),
        );
      }

This code works perfectly on iOS, but on Android I have error:

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):

I tried flutter clean. Restarting IDE. My project is AndroidX project and I put Internet permission in Manifest, my project is more than API 21, but it still crashes. How can I reflect this HTML. I appreciate your time and ideas. Thanks