Freigeben über

ColorObject.Luminance Method

  • Reference

Definition

Namespace:
Android.Graphics
Assembly:
Mono.Android.dll

Overloads

Luminance()

Returns the relative luminance of this color.
Luminance(Color)

Returns the relative luminance of a color.
Luminance(Int64)

Returns the relative luminance of a color.

Luminance()

Returns the relative luminance of this color.

[Android.Runtime.Register("luminance", "()F", "GetLuminanceHandler", ApiSince=26)]
public virtual float Luminance ();
[<Android.Runtime.Register("luminance", "()F", "GetLuminanceHandler", ApiSince=26)>]
abstract member Luminance : unit -> single
override this.Luminance : unit -> single

Returns

Single

A value between 0 (darkest black) and 1 (lightest white)

Attributes
RegisterAttribute

Remarks

Returns the relative luminance of this color.

Based on the formula for relative luminance defined in WCAG 2.0, W3C Recommendation 11 December 2008.

Java documentation for android.graphics.Color.luminance().

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to

Luminance(Color)

Returns the relative luminance of a color.

[Android.Runtime.Register("luminance", "(I)F", "", ApiSince=24)]
public static float Luminance (Android.Graphics.Color color);
[<Android.Runtime.Register("luminance", "(I)F", "", ApiSince=24)>]
static member Luminance : Android.Graphics.Color -> single

Parameters

color
Color

Returns

Single

a value between 0 (darkest black) and 1 (lightest white)

Attributes
RegisterAttribute

Remarks

Returns the relative luminance of a color.

Assumes sRGB encoding. Based on the formula for relative luminance defined in WCAG 2.0, W3C Recommendation 11 December 2008.

Java documentation for android.graphics.Color.luminance(int).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to

Luminance(Int64)

Returns the relative luminance of a color.

[Android.Runtime.Register("luminance", "(J)F", "", ApiSince=26)]
public static float Luminance (long color);
[<Android.Runtime.Register("luminance", "(J)F", "", ApiSince=26)>]
static member Luminance : int64 -> single

Parameters

color
Int64

Returns

Single

A value between 0 (darkest black) and 1 (lightest white)

Attributes
RegisterAttribute

Remarks

Returns the relative luminance of a color.

Based on the formula for relative luminance defined in WCAG 2.0, W3C Recommendation 11 December 2008.

Java documentation for android.graphics.Color.luminance(long).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to