Android 7: Cannot access clipboard

[ddkwork]

If widget use chinese text,entry can't copy any on Android 7.0.

Go:1.15
Fyne:1.4.x

[andydotxyz]

Do you have any more information about the d4evice, perhaps some screenshot or detailed steps to replicate?

[ddkwork]

您是否还有有关d4evice的更多信息，也许有一些截图或要复制的详细步骤？

setup:

//-----------------------------------
go.mod
module entryTest

go 1.15

require (
fyne.io/fyne v1.4.1-0.20201116181323-96c38fbcc8c9
)

a.go
//----------------------------------
package main

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

func main() {
a := app.New()
w := a.NewWindow("entry demo")
w.CenterOnScreen()
e := widget.NewEntry()
m := widget.NewMultiLineEntry()
w.SetContent(container.NewVBox(e, m))
w.ShowAndRun()
}

build apk
//--------------------------------
fyne package -os android/arm64 -appID com.goTemplate.gen -icon C:\Windows\myapp.png

adb logcat:
11-15 14:50:09.549 F/Fyne (12998): cannot lookup clipboard
11-15 14:50:12.028 W/Atfwd_Sendcmd( 8829): AtCmdFwd service not published, waiting... retryCnt : 5
11-15 14:50:12.065 F/Fyne (12998): cannot lookup clipboard
11-15 14:51:01.604 F/Fyne (13605): cannot lookup clipboard
...

11 16:17:14.525 F/libc (17775): Fatal signal 6 (SIGABRT), code -6 in tid 17796 (Thread-7)
11-11 16:17:14.635 F/DEBUG (18380): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-11 16:17:14.636 F/DEBUG (18380): Build fingerprint: 'Xiaomi/hydrogen/hydrogen:7.0/NRD90M/V10.2.2.0.NBCMIXM:user/release-keys'
11-11 16:17:14.636 F/DEBUG (18380): Revision: '0'
11-11 16:17:14.636 F/DEBUG (18380): ABI: 'arm64'
11-11 16:17:14.636 F/DEBUG (18380): pid: 17775, tid: 17796, name: Thread-7 >>> com.example.myapp <<<
11-11 16:17:14.636 F/DEBUG (18380): signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------

select all--> copy-->...
log.txt

[andydotxyz]

It looks like you're hitting an unavailable clipboard for some reason:

11-15 14:50:09.549 F/Fyne (12998): cannot lookup clipboard

As your example contains no chinese I will assume this is not specific to that language

[andydotxyz]

For searchability later this is clearly as a result of the crash fix in #1511

[ddkwork]

您似乎由于某些原因碰到了不可用的剪贴板：

11-15 14:50:09.549 F/Fyne (12998): cannot lookup clipboard

由于您的示例不包含中文，因此我认为这不是该语言所特有的

Do you have any way for debug?please give a chance. Thank you.

[andydotxyz]

It means that the response to Context.getSystemService("clipboard") is failing.
If you can find any reason why that would happen it would be very helpful.
Perhaps you can run an Android app on the same phone and see it's error, it will be easier to debug.

[ddkwork]

这意味着响应Context.getSystemService("clipboard")失败。
如果您找到发生这种情况的任何原因，将非常有帮助。
也许您可以在同一部手机上运行一个Android应用程序并看到它的错误，它将更易于调试。

no, i was try to print class ID, the log printed a big number.

[ddkwork]

这意味着响应Context.getSystemService("clipboard")失败。
如果您找到发生这种情况的任何原因，将非常有帮助。
也许您可以在同一部手机上运行一个Android应用程序并看到它的错误，它将更易于调试。

//Hello, dear fyne development team, your code is excellent, thank you again.
//After a long time of obtaining adb logs and referring to the fyne demo, I came to the conclusion: To use the clipboard function on Android 7.0 API24, the following conditions need to be met. There are too many restrictions and I hope to improve.
//1. Custom theme is invalid in Chinese font
//2. Write log file is invalid,
//3. The print log is invalid,
//4. Do not use the global window handle to occupy the main window handle failure (the child window displays the control layout object, the global window is equal to the child window, the main window is displayed and running)
//5. The drop-down box coverage fails (maybe the focus is covered)

[andydotxyz]

no, i was try to print class ID, the log printed a big number.

in this case find_class or find_method will not fail as they are part of the Android SDK.
What is failing is the execution of getSystemService("clipboard") - for some reason the standard service is not found.

Can you print the details of err that is encountered?

[ddkwork]

getSystemService

log.txt
11-24 17:26:07.950 F/Fyne ( 2897): cannot lookup clipboard

[andydotxyz]

The log we already have is not enough, the error is not reported.
Can you test with an Android app, using the standard Java code, and report the Android stack trace?

[ddkwork]

我们已经拥有的日志还不够，不报告错误。
您可以使用标准Java代码使用Android应用进行测试，并报告Android堆栈跟踪吗？

Sorry, i don't know java language