Attempt to invoke interface method 'io.flutter.plugin.common.BinaryMessenger io.flutter.plugin.common.PluginRegistry$Registrar.messenger

[sky126]

I create new project only add flutter_inappwebview

Flutter version: Flutter (Channel beta, v1.12.13+hotfix.6, on Microsoft Windows [Version 10.0.18363.476], locale zh-CN)

Plugin version: ^2.1.0+1

Stacktrace/Logcat

2019-12-12 20:11:53.794 9623-9623/com.example.diantui E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.diantui, PID: 9623
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.diantui/com.example.diantui.MainActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'io.flutter.plugin.common.BinaryMessenger io.flutter.plugin.common.PluginRegistry$Registrar.messenger()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'io.flutter.plugin.common.BinaryMessenger io.flutter.plugin.common.PluginRegistry$Registrar.messenger()' on a null object reference
at com.pichillilorenzo.flutter_inappwebview.InAppBrowser.(InAppBrowser.java:66)
at com.pichillilorenzo.flutter_inappwebview.InAppWebViewFlutterPlugin.onAttachedToEngine(InAppWebViewFlutterPlugin.java:40)
at io.flutter.embedding.engine.FlutterEnginePluginRegistry.add(FlutterEnginePluginRegistry.java:125)
at io.flutter.plugins.GeneratedPluginRegistrant.registerWith(GeneratedPluginRegistrant.java:15)
at com.example.diantui.MainActivity.configureFlutterEngine(MainActivity.kt:11)
at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:185)
at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:418)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)

[sky126]

ShimPluginRegistry shimPluginRegistry = new ShimPluginRegistry(binding.getFlutterEngine());
registrar = shimPluginRegistry.registrarFor("com.pichillilorenzo/flutter_inappwebview");
inAppBrowser = new InAppBrowser(registrar);

[tatsuyuki25]

same issue

[pichillilorenzo]

I'm working on it to use the new Java API for Flutter embedding v2

[fulus06]

同

[appstute-pratik]

Same issue, Any work around?

[asdfgh5889]

Same issue, Any work around?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

[MostafaEisam]

Same issue

[appstute-pratik]

Same issue, Any work around?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

Is this fix safe for production build?

[asdfgh5889]

Same issue, Any work around?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

Is this fix safe for production build?

I'm not completely sure, but should be ok

[sidpram]

Same issue, Any work around?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

Is this fix safe for production build?

I'm not completely sure, but should be ok

If we include flutter_inappwebview as
flutter_inappwebview:
git:
url: https://github.com/pichillilorenzo/flutter_inappwebview.git
ref: master

Then it gives error on onPermissionRequest and initialOptions. Unable to resolve these two functions

[espresso3389]

I have a plugin depending on the module and pub.dev does not allow me to release a plugin that depends on github; the workaround does not work for me :(
Any ETA for a new release?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

[lehno]

Any fix on it, cant get this to work

[soulduse]

Still not working..

[PhanHug93]

In InAppWebViewFlutterPlugin.class i fixed:

 public InAppWebViewFlutterPlugin(PluginRegistry.Registrar registrar) {
        this.registrar = registrar;
    }

In GeneratedPluginRegistrant class i fixed:
flutterEngine.getPlugins().add(new com.pichillilorenzo.flutter_inappwebview.InAppWebViewFlutterPlugin(shimPluginRegistry.registrarFor("com.pichillilorenzo/flutter_inappwebview")));
Code work but it's only local code ..

[alexlovar]

Same issue, Any work around?

Getting dependency directly from git solved the problem. I think in couple days this fix will be released.

  flutter_inappwebview:
    git:
      url: https://github.com/pichillilorenzo/flutter_inappwebview.git
      ref: master

same error here, this works for me. thanks

[pichillilorenzo]

It has been fixed with version 3.0.0+.
@alexlovar you shouldn't use the master branch anymore.

[github-actions]

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