Setup the environment

In this room it's time for setting up the environment, here we're going to talk about recommended tools for interact with our applications.

Install Java Development Kit

The JDK is a development environment for building applications, applets, and components using the Java programming language.

Emulators

An Android emulator is an Android Virtual Device, that represents a specific Android device. You can use an Android emulator as a target platform to run and test your Android applications on your PC.

Don't necesary Install emulator if have a rooted phone. My favorite emulator for windows, linux and Mac is Genymotion as it is very easy to use. Create account and download the installer for your platform/Operating system.

Enable Developer options in your emulator or rooted phone

Is necessary active this function for use debug usb.

You can unlock the Developer options on any Android smartphone or tablet by locating the Build number in your Settings menu and tapping it multiple times. However, the exact location of the aforementioned build number may differ depending on your phone’s manufacturer.

Settings > About Phone > Build number > Tap it 7 times to become developer;

Now, Settings > Developer Options > USB Debugging.