Added in API level 1

RadialGradient

---

Kotlin |Java

open class RadialGradient : Shader

kotlin.Any
↳	android.graphics.Shader
	↳	android.graphics.RadialGradient

Summary

Public constructors
RadialGradient(centerX: Float, centerY: Float, radius: Float, colors: IntArray, stops: FloatArray?, tileMode: Shader.TileMode) Create a shader that draws a radial gradient given the center and radius.
RadialGradient(centerX: Float, centerY: Float, radius: Float, colors: LongArray, stops: FloatArray?, tileMode: Shader.TileMode) Create a shader that draws a radial gradient given the center and radius.
RadialGradient(startX: Float, startY: Float, startRadius: Float, endX: Float, endY: Float, endRadius: Float, colors: LongArray, stops: FloatArray?, tileMode: Shader.TileMode) Create a shader that draws a radial gradient given the start and end points as well as starting and ending radii.
RadialGradient(centerX: Float, centerY: Float, radius: Float, centerColor: Int, edgeColor: Int, tileMode: Shader.TileMode) Create a shader that draws a radial gradient given the center and radius.
RadialGradient(centerX: Float, centerY: Float, radius: Float, centerColor: Long, edgeColor: Long, tileMode: Shader.TileMode) Create a shader that draws a radial gradient given the center and radius.

Inherited functions
From class Shader Boolean getLocalMatrix(localM: Matrix) Return true if the shader has a non-identity local matrix. Unit setLocalMatrix(localM: Matrix?) Set the shader's local matrix. Passing null will reset the shader's matrix to identity. If the matrix has scale value as 0, the drawing result is undefined.

Public constructors

RadialGradient

Added in API level 1

RadialGradient(
    centerX: Float, 
    centerY: Float, 
    radius: Float, 
    colors: IntArray, 
    stops: FloatArray?, 
    tileMode: Shader.TileMode)

Create a shader that draws a radial gradient given the center and radius.

Parameters
centerX	Float: The x-coordinate of the center of the radius
centerY	Float: The y-coordinate of the center of the radius
radius	Float: Must be positive. The radius of the circle for this gradient.
colors	IntArray: The sRGB colors to be distributed between the center and edge of the circle This value cannot be null.
stops	FloatArray?: May be null. Valid values are between 0.0f and 1.0f. The relative position of each corresponding color in the colors array. If null, colors are distributed evenly between the center and edge of the circle.
tileMode	Shader.TileMode: The Shader tiling mode This value cannot be null.

RadialGradient

Added in API level 29

RadialGradient(
    centerX: Float, 
    centerY: Float, 
    radius: Float, 
    colors: LongArray, 
    stops: FloatArray?, 
    tileMode: Shader.TileMode)

Create a shader that draws a radial gradient given the center and radius.

Parameters
centerX	Float: The x-coordinate of the center of the radius
centerY	Float: The y-coordinate of the center of the radius
radius	Float: Must be positive. The radius of the circle for this gradient.
colors	LongArray: The colors to be distributed between the center and edge of the circle This value cannot be null.
stops	FloatArray?: May be null. Valid values are between 0.0f and 1.0f. The relative position of each corresponding color in the colors array. If null, colors are distributed evenly between the center and edge of the circle.
tileMode	Shader.TileMode: The Shader tiling mode This value cannot be null.

Exceptions
java.lang.IllegalArgumentException	if there are less than two colors, the colors do not share the same ColorSpace or do not use a valid one, or stops is not null and has a different length from colors.

RadialGradient

Added in API level 31

RadialGradient(
    startX: Float, 
    startY: Float, 
    startRadius: Float, 
    endX: Float, 
    endY: Float, 
    endRadius: Float, 
    colors: LongArray, 
    stops: FloatArray?, 
    tileMode: Shader.TileMode)

Create a shader that draws a radial gradient given the start and end points as well as starting and ending radii. The starting point is often referred to as the focal center and represents the starting circle of the radial gradient.

Parameters
startX	Float: The x-coordinate of the center of the starting circle of the radial gradient, often referred to as the focal point.
startY	Float: The y-coordinate of the center of the starting circle of the radial gradient, often referred to as the focal point.
startRadius	Float: The radius of the starting circle of the radial gradient, often referred to as the focal radius. Must be greater than or equal to zero. Value is 0.0f or greater
endX	Float: The x-coordinate of the center of the radius for the end circle of the radial gradient
endY	Float: The y-coordinate of the center of the radius for the end circle of the radial gradient
endRadius	Float: The radius of the ending circle for this gradient. This must be strictly greater than zero. A radius value equal to zero is not allowed. Value is 0.0f or greater
colors	LongArray: The colors to be distributed between the center and edge of the circle This value cannot be null.
stops	FloatArray?: May be null. Valid values are between 0.0f and 1.0f. The relative position of each corresponding color in the colors array. If null, colors are distributed evenly between the center and edge of the circle.
tileMode	Shader.TileMode: The Shader tiling mode This value cannot be null.

Exceptions
java.lang.IllegalArgumentException	In one of the following circumstances: There are less than two colors The colors do not share the same ColorSpace The colors do not use a valid ColorSpace The stops parameter is not null and has a different length from colors. The startRadius is negative The endRadius is less than or equal to zero

RadialGradient

Added in API level 1

RadialGradient(
    centerX: Float, 
    centerY: Float, 
    radius: Float, 
    centerColor: Int, 
    edgeColor: Int, 
    tileMode: Shader.TileMode)

Create a shader that draws a radial gradient given the center and radius.

Parameters
centerX	Float: The x-coordinate of the center of the radius
centerY	Float: The y-coordinate of the center of the radius
radius	Float: Must be positive. The radius of the circle for this gradient
centerColor	Int: The sRGB color at the center of the circle.
edgeColor	Int: The sRGB color at the edge of the circle.
tileMode	Shader.TileMode: The Shader tiling mode This value cannot be null.

RadialGradient

Added in API level 29

RadialGradient(
    centerX: Float, 
    centerY: Float, 
    radius: Float, 
    centerColor: Long, 
    edgeColor: Long, 
    tileMode: Shader.TileMode)

Create a shader that draws a radial gradient given the center and radius.

Parameters
centerX	Float: The x-coordinate of the center of the radius
centerY	Float: The y-coordinate of the center of the radius
radius	Float: Must be positive. The radius of the circle for this gradient
centerColor	Long: The color at the center of the circle.
edgeColor	Long: The color at the edge of the circle.
tileMode	Shader.TileMode: The Shader tiling mode This value cannot be null.

Exceptions
java.lang.IllegalArgumentException	if the colors do not share the same ColorSpace or do not use a valid one.