All applications and files that you have deployed to the Android emulator are stored in a file named userdata-qemu.img located in the C:\Users\<username>\.android\avd\<avd_name>.avd folder. For example, I have an AVD named AndroidTabletWithMaps; hence, the userdata-qemu.img file is located in the C:\Users\Wei-Meng Lee\.android\avd\AndroidTabletWithMaps.avd folder.

If you want to restore the emulator to its original state (to reset it, that is), simply delete the userdata-qemu.img file.

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