dialog from html throwing me error android

[utpalruparel]

I am using flutter_inappwebview in my app and its example is running properly but when i integrate with my app I am getting below error.

2020-06-06 12:01:02.678 24736-24736/com.myapp.example W/System.err: java.lang.ClassCastException: $Proxy3 cannot be cast to android.view.WindowManagerImpl
2020-06-06 12:01:02.681 24736-24736/com.myapp.example W/System.err: at android.view.Window.setWindowManager(Window.java:770)
2020-06-06 12:01:02.681 24736-24736/com.myapp.example W/System.err: at android.view.Window.setWindowManager(Window.java:751)
2020-06-06 12:01:02.681 24736-24736/com.myapp.example W/System.err: at android.app.Dialog.(Dialog.java:339)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.app.AlertDialog.(AlertDialog.java:202)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.app.AlertDialog$Builder.create(AlertDialog.java:1106)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at Fb3.a(chromium-Monochrome.aab-stable-410409673:1)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at ST2.(chromium-Monochrome.aab-stable-410409673:5)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at org.chromium.content.browser.input.SelectPopup.show(chromium-Monochrome.aab-stable-410409673:12)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.os.MessageQueue.nativePollOnce(Native Method)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.os.MessageQueue.next(MessageQueue.java:386)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.os.Looper.loop(Looper.java:175)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at android.app.ActivityThread.main(ActivityThread.java:7625)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at java.lang.reflect.Method.invoke(Native Method)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
2020-06-06 12:01:02.682 24736-24736/com.myapp.example W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)
I am using kotlin

class Application : FlutterApplication(), PluginRegistrantCallback {

override fun onCreate() {
    super.onCreate()
    FlutterFirebaseMessagingService.setPluginRegistrant(this)

}

override fun registerWith(registry: PluginRegistry) {

    GeneratedPluginRegistrant.registerWith(registry)

}

}
MainActivity

import io.flutter.plugins.GeneratedPluginRegistrant
import android.view.WindowManager.LayoutParams
import io.flutter.app.FlutterFragmentActivity

class MainActivity: FlutterFragmentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
GeneratedPluginRegistrant.registerWith(this)
//getWindow().addFlags(LayoutParams.FLAG_SECURE)
}
}

[pichillilorenzo]

Could you explain in more detail when this happens? For example, when you click on a dropdown menu??

Also, Post here the flutter version, Android version, android device info, and plugin version.
If you can, post here also some code (or the URL) that is causing this error, so I can test it.

Furthermore, it seems you are not using the new Flutter Java Embedding API.
Take a look at the "IMPORTANT Note for Android" Section.
To upgrade a Flutter Application pre 1.12, check the official guide: https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects

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