crash at com.pichillilorenzo.flutter_inappwebview.in_app_webview.InAppWebView$11.run (InAppWebView.java:1307)

[rsydor]

very rarely crash. NullPointerException at com.pichillilorenzo.flutter_inappwebview.in_app_webview.InAppWebView$11.run(InAppWebView.java:1307)

• I have read the Get Started - Installation section
• I have read and done the Get Started - Setup Android section
• I have read and done the Get Started - Setup iOS section
• I have already searched for the same problem

Environment

Technology	Version
Flutter version	2.2.3
Plugin version	5.3.2
Android version	11
iOS version	-
Xcode version	-

Device information: XIAOMI POCO X3 Pro

Description

On

**Expected behavior: work without crash

**Current behavior:very rarely crash

Steps to reproduce: at show page with InAppWebView

Widget _buildContent(BuildContext dialogContext, Cubit cubit) { return Container( child: InAppWebView( initialUrlRequest: URLRequest( url: Uri.parse(_params.url), headers: {"'Authorization'": "${_credentials}"}), onWebViewCreated: (InAppWebViewController controller) { controller.addJavaScriptHandler(handlerName:'handler', callback: (args) async { final returnValue = await _onConfirm(args, dialogContext, cubit); if (null != returnValue) { return returnValue; } }); }, ), ); }

Stacktrace/Logcat

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.IBinder android.view.View.getWindowToken()' on a null object reference
at com.pichillilorenzo.flutter_inappwebview.in_app_webview.InAppWebView$11.run(InAppWebView.java:1307)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:236)
at android.app.ActivityThread.main(ActivityThread.java:8056)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)

[github-actions]

👋 @rsydor

NOTE: This comment is auto-generated.

Are you sure you have already searched for the same problem?

Some people open new issues but they didn't search for something similar or for the same issue. Please, search for it using the GitHub issue search box or on the official inappwebview.dev website, or, also, using Google, StackOverflow, etc. before posting a new one. You may already find an answer to your problem!

If this is really a new issue, then thank you for raising it. I will investigate it and get back to you as soon as possible. Please, make sure you have given me as much context as possible! Also, if you didn't already, post a code example that can replicate this issue.

In the meantime, you can already search for some possible solutions online! Because this plugin uses native WebView, you can search online for the same issue adding android WebView [MY ERROR HERE] or ios WKWebView [MY ERROR HERE] keywords.

Following these steps can save you, me, and other people a lot of time, thanks!

[rsydor]

I searched but I don't find.

[daozhishier]

Version: 0.4.0, in iOS:

[VERBOSE-2:ui_dart_state.cc(209)] Unhandled Exception: PlatformException(unregistered_view_type, trying to create a view with an unregistered type, unregistered view type: 'com.pichillilorenzo/flutter_inappwebview', null)
#0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18)

#2 PlatformViewsService.initUiKitView (package:flutter/src/services/platform_views.dart:236:5)

#3 _UiKitViewState._createNewUiKitView (package:flutter/src/widgets/platform_view.dart:639:44)