Android graphics drawable gradientdrawable

Changes this drawable to use a single color instead of a gradient.

Specify radii for each of the 4 corners.

Specify radius for the corners of the gradient.

Sets the center location of the gradient.

Sets the radius of the gradient.

Sets the type of gradient used by this drawable..

Changes the orientation of the gradient defined in this drawable.

Sets the type of shape used to draw the gradient.

Sets the size of the shape drawn by this drawable.

Set the stroke width and color state list for the drawable.

Set the stroke width and color for the drawable.

Set the stroke width and color state list for the drawable.

Set the stroke width and color for the drawable.

Sets whether or not this drawable will honor its level property.

XML Attributes

android:angle

Angle of the gradient.

Must be a floating point value, such as » 1.2 «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol angle .

Related Methods

android:bottom

Amount of bottom padding inside the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol bottom .

Related Methods

android:centerColor

Optional center color. For linear gradients, use centerX or centerY to place the center color.

Must be a color value, in the form of » #rgb «, » #argb «, » #rrggbb «, or » #aarrggbb «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol centerColor .

Related Methods

android:centerX

X coordinate of the origin of the gradient within the shape.

May be a floating point value, such as » 1.2 «.

May be a fractional value, which is a floating point number appended with either % or %p, such as » 14.5% «. The % suffix always means a percentage of the base size; the optional %p suffix provides a size relative to some parent container.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol centerX .

Related Methods

android:centerY

Y coordinate of the origin of the gradient within the shape.

May be a floating point value, such as » 1.2 «.

May be a fractional value, which is a floating point number appended with either % or %p, such as » 14.5% «. The % suffix always means a percentage of the base size; the optional %p suffix provides a size relative to some parent container.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol centerY .

Related Methods

android:color

Solid color for the gradient shape.

Must be a color value, in the form of » #rgb «, » #argb «, » #rrggbb «, or » #aarrggbb «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol color .

Related Methods

android:color

Color of the gradient shape’s stroke.

Must be a color value, in the form of » #rgb «, » #argb «, » #rrggbb «, or » #aarrggbb «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol color .

Related Methods

android:dashGap

Gap between dashes in the stroke.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol dashGap .

Related Methods

android:dashWidth

Length of a dash in the stroke.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol dashWidth .

Related Methods

android:endColor

End color of the gradient.

Must be a color value, in the form of » #rgb «, » #argb «, » #rrggbb «, or » #aarrggbb «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol endColor .

Related Methods

android:gradientRadius

Radius of the gradient, used only with radial gradient.

May be a floating point value, such as » 1.2 «.

May be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

May be a fractional value, which is a floating point number appended with either % or %p, such as » 14.5% «. The % suffix always means a percentage of the base size; the optional %p suffix provides a size relative to some parent container.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol gradientRadius .

Related Methods

android:height

Height of the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol height .

Related Methods

android:innerRadius

Inner radius of the ring. When defined, innerRadiusRatio is ignored.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol innerRadius .

Related Methods

android:innerRadiusRatio

Inner radius of the ring expressed as a ratio of the ring’s width. For instance, if innerRadiusRatio=9, then the inner radius equals the ring’s width divided by 9. This value is ignored if innerRadius is defined. Default value is 9.

Must be a floating point value, such as » 1.2 «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol innerRadiusRatio .

Related Methods

android:left

Amount of left padding inside the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol left .

Related Methods

android:right

Amount of right padding inside the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol right .

Related Methods

android:shape

Indicates what shape to fill with a gradient.

Must be one of the following constant values.

This corresponds to the global attribute resource symbol shape .

Related Methods

android:startColor

Start color of the gradient.

Must be a color value, in the form of » #rgb «, » #argb «, » #rrggbb «, or » #aarrggbb «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol startColor .

Related Methods

android:thickness

Thickness of the ring. When defined, thicknessRatio is ignored.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol thickness .

Related Methods

android:thicknessRatio

Thickness of the ring expressed as a ratio of the ring’s width. For instance, if thicknessRatio=3, then the thickness equals the ring’s width divided by 3. This value is ignored if innerRadius is defined. Default value is 3.

Must be a floating point value, such as » 1.2 «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol thicknessRatio .

Related Methods

android:top

Amount of top padding inside the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol top .

Related Methods

android:type

Type of gradient. The default type is linear.

Must be one of the following constant values.

This corresponds to the global attribute resource symbol type .

Related Methods

android:useLevel

Related Methods

android:useLevel

Indicates whether the drawable’s level affects the way the gradient is drawn.

Must be a boolean value, either » true » or » false «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol useLevel .

Related Methods

android:visible

Indicates whether the drawable should intially be visible.

Must be a boolean value, either » true » or » false «.

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol visible .

Related Methods

android:width

Width of the gradient shape.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol width .

Related Methods

android:width

Width of the gradient shape’s stroke.

Must be a dimension value, which is a floating point number appended with a unit such as » 14.5sp «. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form » @[package:]type:name «) or theme attribute (in the form » ?[package:][type:]name «) containing a value of this type.

This corresponds to the global attribute resource symbol width .

Related Methods

Constants

public static final int LINE

Shape is a line

public static final int LINEAR_GRADIENT

Gradient is linear (default.)

public static final int OVAL

Shape is an ellipse

public static final int RADIAL_GRADIENT

Gradient is circular.

public static final int RECTANGLE

Shape is a rectangle, possibly with rounded corners

public static final int RING

Shape is a ring.

public static final int SWEEP_GRADIENT

Gradient is a sweep.

Public Constructors

public GradientDrawable ()

public GradientDrawable (GradientDrawable.Orientation orientation, int[] colors)

Create a new gradient drawable given an orientation and an array of colors for the gradient.

Public Methods

public void applyTheme (Resources.Theme t)

Applies the specified theme to this Drawable and its children.

public boolean canApplyTheme ()

public void draw (Canvas canvas)

Draw in its bounds (set via setBounds) respecting optional effects such as alpha (set via setAlpha) and color filter (set via setColorFilter).

Parameters

public int getAlpha ()

Gets the current alpha value for the drawable. 0 means fully transparent, 255 means fully opaque. This method is implemented by Drawable subclasses and the value returned is specific to how that class treats alpha. The default return value is 255 if the class does not override this method to return a value specific to its use of alpha.

public int getChangingConfigurations ()

Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. The default implementation returns whatever was provided through setChangingConfigurations(int) or 0 by default. Subclasses may extend this to or in the changing configurations of any other drawables they hold.

Returns

• Returns a mask of the changing configuration parameters, as defined by ActivityInfo .

public ColorFilter getColorFilter ()

Returns the current color filter, or null if none set.

Returns

• the current color filter, or null if none set

public Drawable.ConstantState getConstantState ()

Return a Drawable.ConstantState instance that holds the shared state of this Drawable.

Returns

• The ConstantState associated to that Drawable.

public float getGradientRadius ()

Returns the radius of the gradient in pixels. The radius is valid only when the gradient type is set to RADIAL_GRADIENT .

Returns

public int getIntrinsicHeight ()

Return the intrinsic height of the underlying drawable object. Returns -1 if it has no intrinsic height, such as with a solid color.

public int getIntrinsicWidth ()

Return the intrinsic width of the underlying drawable object. Returns -1 if it has no intrinsic width, such as with a solid color.

public int getOpacity ()

Return the opacity/transparency of this Drawable. The returned value is one of the abstract format constants in PixelFormat : UNKNOWN , TRANSLUCENT , TRANSPARENT , or OPAQUE .

An OPAQUE drawable is one that draws all all content within its bounds, completely covering anything behind the drawable. A TRANSPARENT drawable is one that draws nothing within its bounds, allowing everything behind it to show through. A TRANSLUCENT drawable is a drawable in any other state, where the drawable will draw some, but not all, of the content within its bounds and at least some content behind the drawable will be visible. If the visibility of the drawable’s contents cannot be determined, the safest/best return value is TRANSLUCENT.

Generally a Drawable should be as conservative as possible with the value it returns. For example, if it contains multiple child drawables and only shows one of them at a time, if only one of the children is TRANSLUCENT and the others are OPAQUE then TRANSLUCENT should be returned. You can use the method resolveOpacity(int, int) to perform a standard reduction of two opacities to the appropriate single output.

Note that the returned value does not necessarily take into account a custom alpha or color filter that has been applied by the client through the setAlpha(int) or setColorFilter(ColorFilter) methods. Some subclasses, such as BitmapDrawable , ColorDrawable , and GradientDrawable , do account for the value of setAlpha(int) , but the general behavior is dependent upon the implementation of the subclass.

Returns

• int The opacity class of the Drawable.

public GradientDrawable.Orientation getOrientation ()

Returns the orientation of the gradient defined in this drawable.

public void getOutline (Outline outline)

Called to get the drawable to populate the Outline that defines its drawing area.

This method is called by the default ViewOutlineProvider to define the outline of the View.

The default behavior defines the outline to be the bounding rectangle of 0 alpha. Subclasses that wish to convey a different shape or alpha value must override this method.

public boolean getPadding (Rect padding)

Return in padding the insets suggested by this Drawable for placing content inside the drawable’s bounds. Positive values move toward the center of the Drawable (set Rect.inset).

Returns

• true if this drawable actually has a padding, else false. When false is returned, the padding is always set to 0.

public void inflate (Resources r, XmlPullParser parser, AttributeSet attrs, Resources.Theme theme)

Inflate this Drawable from an XML resource optionally styled by a theme.

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