android_tutorial_teleop building in android studio, Windows

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Hello.

I am working on Windows 7 / Android Studio 1.2.2 / JRE 1.8.0.

Trying to build (android_tutorial_teleop) package in [android_core]. Downloaded source from here. link text

Imported [android_core] in Android Studio.
Selected (android_tutorial_teleop) in "Selelct Run/Debug Configuration". And pressed green "Run" button. It build and launched in emulator.

[1] In emulator. This app is executed. Entered host IP address and pressed "Connect" button. But it crashed.

[2] I copied "android_tutorial_teleop-debug.apk" to my android phone. (from ../build/output/apk/) Installed it. Executed App. Entered host IP address and pressed "Connect" button. But it crashed also.

I searched similar issues in "answers.ros.org". but couldn't find solution. I think "rosjava_core" is needed. But I don't know how to make it in Android Studio in Windows 7. What did I miss?

Thank you in advance.