barcode scanning in android emulator

Yes it is possible. you can use the camera of your laptop as the AVD's front or back camera

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In Android Studio,go to AVD Manager

Choose a device then Click "Edit this device" ->
Click Show Advanced Settings
At camera, select Front: Emulate, Back: VirtualScene.
Then Run App, Click ... - (icon More) at toolbar of device
Click icon camera
Click folder and choose image QR, then you can scale it
Close panel, an continue run app.
When you go to Scan QR Screen, please use ALT + QWEASD to move and control

Then image will be scan

You can enable the cam on android emulator, and so use a barcode scanner on it.

To do so, you have to set the emulator property "configures camera facing back" (or front) to "yes" or "webcam0".

source : http://viralpatel.net/blogs/enable-camera-in-android-emulator/

Yes, you can set the image of wall and table from virtual scene on emulator config.config android emulator

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