If you don't see any devices to build on, it's likely you don't have any Android SDKs and/or Android Virtual Devices set up. This section will walk you through the basic steps to install these required components.
The Android SDK can be downloaded from within Android Studio.
With Android Studio installed, follow these steps to set up a recent SDK:
If you need to build apps for iOS devices, you will need Xcode to install the necessary iOS simulators for testing.