camerax2 android app1 android camera1 android studio1 android-app1 android-source-code1 barcode-scanner1 camera android1 camera app1 hd camera1 java1 jetpack composse1 kotlin1 machine learning1 ml-kit1 mobile-app1 mvvm-architecture1 photo and video1 qrcode1 ui/ux1 video recorder1 xml1