Tutorial by Examples: avd

Once the SDK installed, you can open the AVD Manager from the command line using android avd. You can also access AVD Manager from Android studio using Tools > Android > AVD Manager or by clicking on the AVD Manager icon in the toolbar which is the second in the screenshot below.

TL;DR It basically allows us to simulate real devices and test our apps without a real device. According to Android Developer Documentation, an Android Virtual Device (AVD) definition lets you define the characteristics of an Android Phone, Tablet, Android Wear, or Android TV device that you w...