You can install .apk files to emulator regardless of what you are using (Eclipse or Android Studio). here's what I always do: (For full beginners).1- Run the emulator, and wait until it's completely started.- now open run.bat and write adb install your_apk_file.apk. 6- wait until the installation is complete. 7- voila your apk is installed to your emulator. Note: to re-install the application if it already existe use adb install-r your_apk_file.apk. sorry for the detailed instruction as I said for full beginners.