The free Android Studio integrated development environment (IDE) has become the official tool for creating Android apps since its release in 2014. You learned how to create mobile apps in Java with this IDE during Day 21, “Writing Android Apps with Java.”
If you have read that chapter and have successfully run an app in an Android emulator, you don’t need to read this appendix.
But if you couldn’t make the emulator work at all, you’re in the right place.
When you are working on an Android project in Android Studio and you want to run the app, you can choose the menu command Run, Run App.
This command opens a Choose Device dialog that asks for the device where ...