Heavenly Father sees and understands the pressing issues in our world. He has the eternal foresight to know the challenges society will face. As a perfect, all-knowing parent, God teaches and warns His children through prophets. This was true in the scriptures when prophets spoke of the scattering of Israel.
Android application package file commonly known as an APK (.apk) file is the format of installable files on Android platform. Every application you have installed or want to install on your Android device has the .apk extension or file format.
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.