Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.7.1 linux/amd64

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/storage/data/gocode:/storage/data/"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build712135149=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"

What did you do?

In go Create a method with underscore in the name
func Exported_func() {}
$ gomobile bind -target=android .../goexport
results:

Archive:  goexport.aar
  Length      Date    Time    Name
---------  ---------- -----   ----
      147  1980-00-00 00:00   AndroidManifest.xml
       25  1980-00-00 00:00   proguard.txt
     8636  1980-00-00 00:00   classes.jar
  2481408  1980-00-00 00:00   jni/arm64-v8a/libgojni.so
  1919436  1980-00-00 00:00   jni/x86/libgojni.so
  2402712  1980-00-00 00:00   jni/x86_64/libgojni.so
  1990960  1980-00-00 00:00   jni/armeabi-v7a/libgojni.so
        0  1980-00-00 00:00   R.txt
        0  1980-00-00 00:00   res/
---------                     -------
  8803324                     9 files

so far so good
$nm -D jni/x86_64/libgojni.so
....
Java_go_goexport_Goexport_exported_func
...

What did you expect to see?

From android to call function Goexport.exported_func(); withouth error

What did you see instead?

java.lang.UnsatisfiedLinkError: No implementation found for void go.goexport.Goexport.exported_func() (tried Java_go_goexport_Goexport_exported_1func and Java_go_goexport_Goexport_exported_1func__)

According to this: resolving_native_method_names

Names generated in jni which has _ in name should be replaced with _1 as seen above (tried ..)