webview plug in android complains 'Didn't find class "com/inkeliz/webview/sys_android"'

[awsong]

Affected plugin
WebViewer

Describe the bug
A clear and concise description of what the bug is.

Expected behavior
I followed WebViewer's instruction, but when ever I call webviewer.WebViewOp{Tag: new(int)}.Push(gtx.Ops) the app will crash.
logcat error shows:
06-09 17:02:00.315 10474 0 E Go : panic: java.lang.ClassNotFoundException: Didn't find class "com/inkeliz/webview/sys_android" on path: DexPathList[[zip file "/data/app/~~U4IeYUXlfsBl5UbjD5FE_Q==/com.myapp.ipn-8uhBTZkYSnEuFtckM_lbFg==/base.apk"],nativeLibraryDirectories=[/data/app/~~U4IeYUXlfsBl5UbjD5FE_Q==/com.myapp.ipn-8uhBTZkYSnEuFtckM_lbFg==/lib/arm64, /data/app/~~U4IeYUXlfsBl5UbjD5FE_Q==/com.myapp.ipn-8uhBTZkYSnEuFtckM_lbFg==/base.apk!/lib/arm64-v8a, /system/lib64, /system/system_ext/lib64]]

To Reproduce
I did run plugin.Install(window, evt) before calling webviewer.WebViewOp

Reproducible code

Introduce the minimum code to reproduce the issue.

Smartphone (please complete the following information):

• Device: OnePlus 7pro
• OS: Android
• Version 11

Additional context
Add any other context about the problem here.

[inkeliz]

I push one small change, to fix .jar. But, I'm not sure if that issue is fixed, I'm take a look later. :)

[awsong]

seems not. I updated to latest plugin module
github.com/gioui-plugins/gio-plugins v0.0.0-20230609115442-5d1d7feeafdd
the problem was still there.

[yms2772]

is there any update?

[inkeliz]

I can't reproduce this issue, the com/inkeliz/webview/sys_android file is here (https://github.com/gioui-plugins/gio-plugins/blob/main/webviewer/webview/sys_android.java) and it's pre-compiled (https://github.com/gioui-plugins/gio-plugins/blob/main/webviewer/webview/sys_android.jar).

You can try re-generate the .jar, with:

gio-plugins/makefile.mk

Lines 14 to 20 in 5bad9f3

	define generate_java
	java_$(1):
	mkdir -p $(TEMP)/$(1)_android/classes
	PATH=$(ANDROID_JAVA_ROOT):$(PATH) javac -source 8 -target 8 -bootclasspath $(ANDROID_PLATFORM)/android.jar $(if $(2),-cp $(2)) -d $(TEMP)/$(1)_android/classes $(1)_android.java
	jar cf $(1)_android.jar -C $(TEMP)/$(1)_android/classes .
	rm -rf $(TEMP)/$(1)_android
	endef

When building, you need to attach the .jar to your apk, if you use gogio (either the original or my fork) it will embed all files. If possible, import your APK to Android Studio, you will be able to identify if "com/inkeliz/webview/sys_android" is in the .apk or not.