• The Android Emulator simulates a device and displays it on your development computer.
• It lets you prototype, develop, and test Android apps without using a hardware device.
• The emulator supports Android phone, tablet, Android Wear, and Android TV devices.
• It comes with predefined device types so you can get started quickly, and you can create your own device definitions and emulator skins.
• The Android Emulator is fast, powerful, and feature-rich.
• It can transfer information faster than using a connected hardware device, speeding up the development process.
• The multi-core feature lets the emulator take advantage of multiple core processors on your development computer to improve emulator performance even more.
• We can run and test Android App in AVD of Emulator in Android Studio.
• This is basically the best way to test App in Android before uploading on Google Play.
• Below are the steps to run an Android App in AVD of Emulator:

Step 1:

• First, open the AVD Manager directly by the AVD icon in the Toolbar.

Step 2:

• Your Virtual Devices list will be opened on your Computer screen.
• After that you Select that AVD on which you want to run your App.
• If you don’t see any AVD (Android Virtual Device) that means you haven’t created not even one.

Step 3:

• After step 2, your AVD / Emulator will open up.
• It will take time to start depending on your system configuration and pixel resolution of AVD.
• Choose less pixel resolution for faster loading of AVD.

Step 4:

• Following step 3, you can run app directly as shown below.
• Click on run icon.

Step 5:

• You can also run app go to the Menu bar
• Click on Run > Run app. (Shift+F10) shortcut key to run app in AVD of Emulator in android studio.

Step 6:

• After that Device chooser will be opened on your computer screen.
• Choose a running device and Click OK.

Step 7:

• Your Android app runs in AVD / Emulator in android studio.