camerax

Replace CameraDevice and CameraCaptureSession callbacks with ProcessCameraProvider bound to a LifecycleOwner, and swap ImageReader flows for ImageCapture and ImageAnalysis use cases. Use Camera2Interop.Extender when you still need specific CaptureRequest options like manual exposure.

Use CameraXViewfinder with a SurfaceRequest, transform tap coordinates via CoordinateTransformer, then create a metering point with SurfaceOrientedMeteringPointFactory. Pass it to cameraControl.startFocusAndMetering with a FocusMeteringAction.

PendingRecording.withAudioEnabled returns a new instance that must be reassigned or chained; calling it without reassignment silently drops audio. Also verify the RECORD_AUDIO permission is granted before enabling audio in VideoCapture.

CameraX is recommended for most apps because it manages threads, lifecycles, and device workarounds automatically. Use Camera2Interop for the few hardware controls CameraX does not expose, reserving raw Camera2 for highly specialized pipelines.

Build fake implementations of interfaces like ImageProxy instead of using Mockito, and use FakeAppConfig from androidx.camera:camera-testing to simulate hardware constraints. Combine with Google Truth assertions, explicit RunWith annotations, and IdlingResource for asynchronous initialization.

Yes. Use Jetpack WindowManager FoldingFeature to adapt layouts for tabletop and book postures, and update the ViewPort for coordinate accuracy. For low light, use ExtensionsManager Night mode for stills or enableLowLightBoostAsync for preview and video.