Summary: Enums | Methods | Inherited Methods

PreviewView.ImplementationMode

Kotlin |Java

public static final enum PreviewView.ImplementationMode
extends Enum<PreviewView.ImplementationMode>

java.lang.Object
↳	java.lang.Enum<androidx.camera.view.PreviewView.ImplementationMode>
	↳	androidx.camera.view.PreviewView.ImplementationMode

The implementation mode of a PreviewView.

User preference on how the PreviewView should render the preview. PreviewView displays the preview with either a SurfaceView or a TextureView. A SurfaceView is generally better than a TextureView when it comes to certain key metrics, including power and latency. On the other hand, TextureView is better supported by a wider range of devices. The option is used by PreviewView to decide what is the best internal implementation given the device capabilities and user configurations.

Summary

Enum values
`PreviewView.ImplementationMode`	`COMPATIBLE` Use a `TextureView` for the preview.
`PreviewView.ImplementationMode`	`PERFORMANCE` Use a `SurfaceView` for the preview when possible.

Public methods
`static PreviewView.ImplementationMode`	`valueOf(String name)`
`static final ImplementationMode[]`	`values()`

Inherited methods

From class


        
          java.lang.Enum

`final Object`	`clone()`
`final int`	`compareTo(PreviewView.ImplementationMode arg0)`
`int`	`compareTo(Object arg0)`
`final boolean`	`equals(Object arg0)`
`final void`	`finalize()`
`final Class<PreviewView.ImplementationMode>`	`getDeclaringClass()`
`final int`	`hashCode()`
`final String`	`name()`
`final int`	`ordinal()`
`String`	`toString()`
`static <T extends Enum<T>> T`	`valueOf(Class<T> arg0, String arg1)`

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

From interface


        
          java.lang.Comparable

abstract int compareTo(PreviewView.ImplementationMode arg0)

Enum values

COMPATIBLE

public static final PreviewView.ImplementationMode COMPATIBLE

Use a TextureView for the preview.

PERFORMANCE

public static final PreviewView.ImplementationMode PERFORMANCE

Use a SurfaceView for the preview when possible. If the device doesn't support SurfaceView, PreviewView will fall back to use a TextureView instead.

PreviewView falls back to TextureView when the API level is 24 or lower, the camera hardware is CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY, or Preview.getTargetRotation() is different from PreviewView's display rotation.

Do not use this mode if Preview.Builder.setTargetRotation(int) is set to a value different than the display's rotation, because SurfaceView does not support arbitrary transformation. Do not use this mode if the PreviewView needs to be animated. SurfaceView animation is not supported on API level 24 or lower. Also, for streaming state provided in PreviewView.getPreviewStreamState(), the PreviewView.StreamState.STREAMING state might happen prematurely if this mode is used.

See also:

Public methods

valueOf

public static PreviewView.ImplementationMode valueOf (String name)

Parameters
`name`	`String`

Returns
`PreviewView.ImplementationMode`

values

public static final ImplementationMode[] values ()

Returns
`ImplementationMode[]`