Take Picture using Camera2 API
and Camera2Source similar to CameraSource of Vision API

Main Menu

Back Camera Preview

Front Camera Preview, when click Flip button

show toast when saved picture, when click Picture button

Example of Error Callback

• https://developer.android.com/reference/android/hardware/camera2/package-summary
• https://developers.google.com/android/reference/com/google/android/gms/vision/CameraSource