The input queue runs concurrent with the native activity lifecycle,
and so the getKey helper Java method might be called after the
app has been destroyed. This is particularly likely for "back"
key presses that destroys activities.
Change the getKey method to be static so that it can be called
outside the app lifecycle.
Run `go generate ./cmd/gomobile` to update the compiled dex file that
contains GoNativeActivity.
Fixesgolang/go#27652
Change-Id: Id2c863ee07e5447f033e67d6948fbfe746916ffa
Reviewed-on: https://go-review.googlesource.com/135215
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
6d4b718bf3