(Android) Unhandled Exception: MissingPluginException(No implementation found for method dispose on channel admob_flutter/banner_0))

[hygehyge]

When I ran 1.0.0-beta.3 example app and scroll the ListView, I got this exception.

E/flutter (23122): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method dispose on channel admob_flutter/banner_0)
[38;5;244mE/flutter (23122): #0 MethodChannel._invokeMethod[39;49m
E/flutter (23122):
[38;5;244mE/flutter (23122): #1 MethodChannel.invokeMethod[39;49m
[38;5;248mE/flutter (23122): #2 AdmobBannerController.dispose[39;49m
[38;5;248mE/flutter (23122): #3 _AdmobBannerState.dispose[39;49m
[38;5;244mE/flutter (23122): #4 StatefulElement.unmount[39;49m
[38;5;244mE/flutter (23122): #5 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #6 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #7 SingleChildRenderObjectElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #8 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #9 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #10 ComponentElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #11 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #12 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #13 MultiChildRenderObjectElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #14 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #15 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #16 SingleChildRenderObjectElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #17 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #18 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #19 SingleChildRenderObjectElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #20 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #21 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #22 ComponentElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #23 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #24 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #25 ComponentElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #26 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #27 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #28 ComponentElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #29 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #30 _InactiveElements._unmount.[39;49m
[38;5;244mE/flutter (23122): #31 ComponentElement.visitChildren[39;49m
[38;5;244mE/flutter (23122): #32 _InactiveElements._unmount[39;49m
[38;5;244mE/flutter (23122): #33 ListIterable.forEach (dart:_internal/iterable.dart:41:13)[39;49m
[38;5;244mE/flutter (23122): #34 _InactiveElements._unmountAll[39;49m
[38;5;244mE/flutter (23122): #35 BuildOwner.finalizeTree.[39;49m
[38;5;244mE/flutter (23122): #36 BuildOwner.lockState[39;49m
[38;5;244mE/flutter (23122): #37 BuildOwner.finalizeTree[39;49m
[38;5;244mE/flutter (23122): #38 WidgetsBinding.drawFrame[39;49m
[38;5;244mE/flutter (23122): #39 RendererBinding._handlePersistentFrameCallback[39;49m

Below is the output of flutter doctor -v.

[√] Flutter (Channel stable, v1.17.1, on Microsoft Windows [Version 10.0.18363.836], locale ja-JP)
• Flutter version 1.17.1 at D:\Flutter\SDK
• Framework revision f7a6a7906b (2 weeks ago), 2020-05-12 18:39:00 -0700
• Engine revision 6bc433c6b6
• Dart version 2.8.2

[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at C:\AndroidSDK
• Platform android-29, build-tools 28.0.3
• ANDROID_HOME = C:\AndroidSDK
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
• All Android licenses accepted.

[√] Android Studio (version 3.4)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 38.2.1
• Dart plugin version 183.6270
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)

[√] VS Code (version 1.45.1)
• VS Code at C:\Users\HYGE\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.10.2

[√] Connected device (1 available)
• J9210 • QV711QTV24 • android-arm64 • Android 10 (API 29)

Ver.0.3.4 doesn't have this issue.
Is there any idea ?
Best regards, Thank you.

[kmcgill88]

Does it do this on iOS?

I added this and this in beta 3. I wonder if it is the issue.

[hygehyge]

I don't have iPhone or Mac, so cannot check if this happens on iOS.

I'll attach Android repro ASAP.

[hygehyge]

@kmcgill88
Here is repro.
test_admob_flutter.zip

I create this through the following steps.
 1.Create new Flutter project in VSCode.
 2.Add admob_flutter: ^1.0.0-beta.3 to pubspec.yaml.
 3.Add meta-data tag with

android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-3940256099942544~3347511713"

   to AndroidManifest.xml@android\app\src\main.
 4.Copy example.dart to main.dart.
 5.Add testDeviceId to Admob.initialize method.(repro contains dummy deviceID)
 6.Run and scroll ListView, the Exception is thrown.

It looks like this happens when the "2nd" banner is disappeared.

[Skyost]

Same error here, using an Android Emulator. Haven't tested on iOS.

[farhadsaberi]

same error on android - macos and widows

[kmcgill88]

Fixed in 1.0.0-beta.4

[hygehyge]

I check 1.0.0-beta.4 and Exception is gone !!
Thank you for your quick response.