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Added in API level 1

Summary: Constants | Ctors | Methods | Inherited Methods | [Expand All]

Color

public class Color
extends Object

java.lang.Object
↳	android.graphics.Color

The Color class defines methods for creating and converting color ints. Colors are represented as packed ints, made up of 4 bytes: alpha, red, green, blue. The values are unpremultiplied, meaning any transparency is stored solely in the alpha component, and not in the color components. The components are stored as follows (alpha << 24) | (red << 16) | (green << 8) | blue. Each component ranges between 0..255 with 0 meaning no contribution for that component, and 255 meaning 100% contribution. Thus opaque-black would be 0xFF000000 (100% opaque but no contributions from red, green, or blue), and opaque-white would be 0xFFFFFFFF

Summary

Constants
`int`	`BLACK`
`int`	`BLUE`
`int`	`CYAN`
`int`	`DKGRAY`
`int`	`GRAY`
`int`	`GREEN`
`int`	`LTGRAY`
`int`	`MAGENTA`
`int`	`RED`
`int`	`TRANSPARENT`
`int`	`WHITE`
`int`	`YELLOW`

Public constructors
`Color()`

Public methods
`static int`	`HSVToColor(float[] hsv)` Convert HSV components to an ARGB color.
`static int`	`HSVToColor(int alpha, float[] hsv)` Convert HSV components to an ARGB color.
`static void`	`RGBToHSV(int red, int green, int blue, float[] hsv)` Convert RGB components to HSV.
`static int`	`alpha(int color)` Return the alpha component of a color int.
`static int`	`argb(int alpha, int red, int green, int blue)` Return a color-int from alpha, red, green, blue components.
`static int`	`blue(int color)` Return the blue component of a color int.
`static void`	`colorToHSV(int color, float[] hsv)` Convert the argb color to its HSV components.
`static int`	`green(int color)` Return the green component of a color int.
`static float`	`luminance(int color)` Returns the relative luminance of a color.
`static int`	`parseColor(String colorString)` Parse the color string, and return the corresponding color-int.
`static int`	`red(int color)` Return the red component of a color int.
`static int`	`rgb(int red, int green, int blue)` Return a color-int from red, green, blue components.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

BLACK

Added in API level 1

int BLACK

Constant Value: -16777216 (0xff000000)

BLUE

Added in API level 1

int BLUE

Constant Value: -16776961 (0xff0000ff)

CYAN

Added in API level 1

int CYAN

Constant Value: -16711681 (0xff00ffff)

DKGRAY

Added in API level 1

int DKGRAY

Constant Value: -12303292 (0xff444444)

GRAY

Added in API level 1

int GRAY

Constant Value: -7829368 (0xff888888)

GREEN

Added in API level 1

int GREEN

Constant Value: -16711936 (0xff00ff00)

LTGRAY

Added in API level 1

int LTGRAY

Constant Value: -3355444 (0xffcccccc)

MAGENTA

Added in API level 1

int MAGENTA

Constant Value: -65281 (0xffff00ff)

RED

Added in API level 1

int RED

Constant Value: -65536 (0xffff0000)

TRANSPARENT

Added in API level 1

int TRANSPARENT

Constant Value: 0 (0x00000000)

WHITE

Added in API level 1

int WHITE

Constant Value: -1 (0xffffffff)

YELLOW

Added in API level 1

int YELLOW

Constant Value: -256 (0xffffff00)

Public constructors

Color

Added in API level 1

Color ()

Public methods

HSVToColor

Added in API level 1

int HSVToColor (float[] hsv)

Convert HSV components to an ARGB color. Alpha set to 0xFF. hsv[0] is Hue [0 .. 360) hsv[1] is Saturation [0...1] hsv[2] is Value [0...1] If hsv values are out of range, they are pinned.

Parameters
`hsv`	`float`: 3 element array which holds the input HSV components.

Returns
`int`	the resulting argb color

HSVToColor

Added in API level 1

int HSVToColor (int alpha, 
                float[] hsv)

Convert HSV components to an ARGB color. The alpha component is passed through unchanged. hsv[0] is Hue [0 .. 360) hsv[1] is Saturation [0...1] hsv[2] is Value [0...1] If hsv values are out of range, they are pinned.

Parameters
`alpha`	`int`: the alpha component of the returned argb color.
`hsv`	`float`: 3 element array which holds the input HSV components.

Returns
`int`	the resulting argb color

RGBToHSV

Added in API level 1

void RGBToHSV (int red, 
                int green, 
                int blue, 
                float[] hsv)

Convert RGB components to HSV. hsv[0] is Hue [0 .. 360) hsv[1] is Saturation [0...1] hsv[2] is Value [0...1]

Parameters
`red`	`int`: red component value [0..255]
`green`	`int`: green component value [0..255]
`blue`	`int`: blue component value [0..255]
`hsv`	`float`: 3 element array which holds the resulting HSV components.

alpha

Added in API level 1

int alpha (int color)

Return the alpha component of a color int. This is the same as saying color >>> 24

Parameters
`color`	`int`

Returns
`int`

argb

Added in API level 1

int argb (int alpha, 
                int red, 
                int green, 
                int blue)

Return a color-int from alpha, red, green, blue components. These component values should be [0..255], but there is no range check performed, so if they are out of range, the returned color is undefined.

Parameters
`alpha`	`int`: Alpha component [0..255] of the color
`red`	`int`: Red component [0..255] of the color
`green`	`int`: Green component [0..255] of the color
`blue`	`int`: Blue component [0..255] of the color

Returns
`int`

blue

Added in API level 1

int blue (int color)

Return the blue component of a color int. This is the same as saying color & 0xFF

Parameters
`color`	`int`

Returns
`int`

colorToHSV

Added in API level 1

void colorToHSV (int color, 
                float[] hsv)

Convert the argb color to its HSV components. hsv[0] is Hue [0 .. 360) hsv[1] is Saturation [0...1] hsv[2] is Value [0...1]

Parameters
`color`	`int`: the argb color to convert. The alpha component is ignored.
`hsv`	`float`: 3 element array which holds the resulting HSV components.

green

Added in API level 1

int green (int color)

Return the green component of a color int. This is the same as saying (color >> 8) & 0xFF

Parameters
`color`	`int`

Returns
`int`

luminance

Added in API level 24

float luminance (int color)

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.

Parameters
`color`	`int`

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

parseColor

Added in API level 1

int parseColor (String colorString)

Parse the color string, and return the corresponding color-int. If the string cannot be parsed, throws an IllegalArgumentException exception. Supported formats are: #RRGGBB #AARRGGBB or one of the following names: 'red', 'blue', 'green', 'black', 'white', 'gray', 'cyan', 'magenta', 'yellow', 'lightgray', 'darkgray', 'grey', 'lightgrey', 'darkgrey', 'aqua', 'fuchsia', 'lime', 'maroon', 'navy', 'olive', 'purple', 'silver', 'teal'.

Parameters
`colorString`	`String`

Returns
`int`

red

Added in API level 1

int red (int color)

Return the red component of a color int. This is the same as saying (color >> 16) & 0xFF

Parameters
`color`	`int`

Returns
`int`

rgb

Added in API level 1

int rgb (int red, 
                int green, 
                int blue)

Return a color-int from red, green, blue components. The alpha component is implicity 255 (fully opaque). These component values should be [0..255], but there is no range check performed, so if they are out of range, the returned color is undefined.

Parameters
`red`	`int`: Red component [0..255] of the color
`green`	`int`: Green component [0..255] of the color
`blue`	`int`: Blue component [0..255] of the color

Returns
`int`