x/mobile: basic demo on andorid has slight GUI race conditions bug

[ghost]

golang.org/x/mobile/example/basic
its a UI interaction bug.

Context:
gedw99-MacBook-Pro:audio apple$ go version
go version go1.5beta2 darwin/amd64

gedw99-MacBook-Pro:audio apple$ which go
/usr/local/go/bin/go
gedw99-MacBook-Pro:audio apple$

Steps to reproduce:
compile for android
load apk on nexus 6
open program and it works fine.
hit home button
open program and it works fine
hit back button
open program and it shows a dithered triangle.

• it looks like 2 programs running on top of each other with a alpha transparency between them.

[ianlancetaylor]

CC @crawshaw

[crawshaw]

Thanks for the report. On a Galaxy Nexus I see some kind of crash for open->back button->open. This is probably a recent regression (due to our lack of good integration testing for apps). I'll take a look.

[ghost]

happy to report it. thanks for your hard work.

In relation to what you get on the Galaxy Nexus, the crash is visual or on log files ? On nexus 6 the GUI does not crash, just has this weird dithering on the triangle. i did not check the logs.

[gopherbot]

CL https://golang.org/cl/12533 mentions this issue.