fyne-io / fyne

Checklist

I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

Command: fyne package -os android -appID com.example.test
Output:

go build -buildmode=c-shared -o /tmp/fyne-work-1596608702/lib/armeabi-v7a/libtest.so test failed: exit status 1
# fyne.io/fyne/v2/internal/driver/mobile/app
../../go/pkg/mod/fyne.io/fyne/v2@v2.4.5/internal/driver/mobile/app/android.go:520:6: could not determine kind of name for C.ALooper_pollAll

How to reproduce

Install android ndk
Copy the code & install fyne
Export the environment variable export ANDROID_NDK_HOME=~/Android/Sdk/ndk/27.0.11718014/
Package for android using fyne package -os android -appID com.example.test

Screenshots

No response

Example code

package main

import (
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/widget"
)

func main() {
	a := app.New()
	w := a.NewWindow("test")

	content := widget.NewLabel("Hello world!")

	w.SetContent(content)

	w.ShowAndRun()
}

Fyne version

v2.4.5

Go compiler version

1.22.0

Operating system and version

Manjaro linux

Additional Information

This seems to affect only the latest versions of the ndk. Using r20b fixes the issue.

I faced the same problem and have not found the solution yet, but it seems that C.ALooper_pollAll was deleted in android api 34 as stated here.

Using an older version of the ndk solves the problem for me (e.g r20b)

I solved it by going to the error (

fyne/internal/driver/mobile/app/android.go

Line 520 in d8e9fe0

if C.ALooper_pollAll(-1, nil, nil, nil) == C.ALOOPER_POLL_WAKE {

) and removing the condition

Hello. I was able to solve this issue replacing the C.ALooper_pollAll() with C.ALooper_pollOnce where the error was called at ../../go/pkg/mod/fyne.io/fyne/v2@v2.4.5/internal/driver/mobile/app/android.go:520:6:

I found the solution here https://developer.android.com/ndk/reference/group/looper

I hope this helps

Suggested fix resolves the issue

I landed that change on to develop thanks for the tip

Android packaging fails: could not determine kind of name for C.ALooper_pollAll