CameraView

Kotlin |Java

class CameraView : FrameLayout

kotlin.Any
↳	android.view.View
	↳	android.view.ViewGroup
		↳	android.widget.FrameLayout
			↳	androidx.camera.view.CameraView

A View that displays a preview of the camera with methods , takePicture(ImageCapture.OutputFileOptions, Executor, OnImageSavedCallback), startRecording(File, Executor, OnVideoSavedCallback callback) and stopRecording().

Because the Camera is a limited resource and consumes a high amount of power, CameraView must be opened/closed. CameraView will handle opening/closing automatically through use of a . Use bindToLifecycle(LifecycleOwner) to start the camera.

Summary

Nested classes
	`CaptureMode` The capture mode used by CameraView.

Public constructors
`<init>(@NonNull context: Context)`
`<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?)`
`<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?, defStyle: Int)`
`<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?, defStyleAttr: Int, defStyleRes: Int)`

Public methods
Unit	`bindToLifecycle(@NonNull lifecycleOwner: LifecycleOwner)` Binds control of the camera used by this view to the given lifecycle.
Unit	`enableTorch(torch: Boolean)` Turns on/off torch.
Int?	`getCameraLensFacing()` Returns the currently selected lensFacing.
CameraView.CaptureMode	`getCaptureMode()` Returns the scale type used to scale the preview.
Int	`getFlash()` Gets the active flash strategy.
Float	`getMaxZoomRatio()` Returns the maximum zoom ratio.
Float	`getMinZoomRatio()` Returns the minimum zoom ratio.
LiveData<PreviewView.StreamState!>	`getPreviewStreamState()` Gets the `LiveData` of the underlying `PreviewView`'s `PreviewView.StreamState`.
PreviewView.ScaleType	`getScaleType()` Returns the scale type used to scale the preview.
Float	`getZoomRatio()` Returns the current zoom ratio.
Boolean	`hasCameraWithLensFacing(lensFacing: Int)` Queries whether the current device has a camera with the specified direction.
Boolean	`isPinchToZoomEnabled()` Returns whether the view allows pinch-to-zoom.
Boolean	`isRecording()`
Boolean	`isTorchOn()` Returns current torch status.
Boolean	`isZoomSupported()` Returns whether the bound camera supports zooming.
Boolean	`onTouchEvent(@NonNull event: MotionEvent)`
Boolean	`performClick()` Focus the position of the touch event, or focus the center of the preview for accessibility events
Unit	`setCameraLensFacing(@Nullable lensFacing: Int?)` Sets the desired camera by specifying desired lensFacing.
Unit	`setCaptureMode(@NonNull captureMode: CameraView.CaptureMode)` Sets the CameraView capture mode
Unit	`setFlash(flashMode: Int)` Sets the active flash strategy.
Unit	`setPinchToZoomEnabled(enabled: Boolean)` Sets whether the view should allow pinch-to-zoom.
Unit	`setScaleType(@NonNull scaleType: PreviewView.ScaleType)` Sets the view finder scale type.
Unit	`setZoomRatio(zoomRatio: Float)` Sets the current zoom ratio.
Unit	`startRecording(@NonNull file: File, @NonNull executor: Executor, @NonNull callback: OnVideoSavedCallback)` Takes a video and calls the OnVideoSavedCallback when done.
Unit