public
class
VectorDrawable
extends Drawable
java.lang.Object | ||
↳ | android.graphics.drawable.Drawable | |
↳ | android.graphics.drawable.VectorDrawable |
This lets you create a drawable based on an XML vector graphic.
Note: To optimize for the re-drawing performance, one bitmap cache is created for each VectorDrawable. Therefore, referring to the same VectorDrawable means sharing the same bitmap cache. If these references don't agree upon on the same size, the bitmap will be recreated and redrawn every time size is changed. In other words, if a VectorDrawable is used for different sizes, it is more efficient to create multiple VectorDrawables, one for each size. VectorDrawable can be defined in an XML file with the<vector>
element.
The vector drawable has the following elements:
<vector>
android:name
android:width
android:height
android:viewportWidth
android:viewportHeight
android:tint
android:tintMode
android:autoMirrored
android:alpha
<group>
android:name
android:rotation
android:pivotX
android:pivotY
android:scaleX
android:scaleY
android:translateX
android:translateY
<path>
android:name
android:pathData
android:fillColor
android:strokeColor
android:strokeWidth
android:strokeAlpha
android:fillAlpha
android:trimPathStart
android:trimPathEnd
android:trimPathOffset
android:strokeLineCap
android:strokeLineJoin
android:strokeMiterLimit
android:fillType
<clip-path>
android:name
android:pathData
<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="64dp" android:width="64dp" android:viewportHeight="600" android:viewportWidth="600" > <group android:name="rotationGroup" android:pivotX="300.0" android:pivotY="300.0" android:rotation="45.0" > <path android:name="v" android:fillColor="#000000" android:pathData="M300,70 l 0,-70 70,70 0,0 -70,70z" /> </group> </vector>
Public constructors | |
---|---|
VectorDrawable()
|
Public methods | |
---|---|
void
|
applyTheme(Resources.Theme t)
Applies the specified theme to this Drawable and its children. |
boolean
|
canApplyTheme()
|
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). |
int
|
getAlpha()
Gets the current alpha value for the drawable. |
int
|
getChangingConfigurations()
Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. |
ColorFilter
|
getColorFilter()
Returns the current color filter, or |
Drawable.ConstantState
|
getConstantState()
Return a |
int
|
getIntrinsicHeight()
Returns the drawable's intrinsic height. |
int
|
getIntrinsicWidth()
Returns the drawable's intrinsic width. |
int
|
getOpacity()
Return the opacity/transparency of this Drawable. |
void
|
inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Resources.Theme theme)
Inflate this Drawable from an XML resource optionally styled by a theme. |
boolean
|
isAutoMirrored()
Tells if this Drawable will be automatically mirrored when its layout direction is RTL right-to-left. |
boolean
|
isStateful()
Indicates whether this drawable will change its appearance based on state. |
Drawable
|
mutate()
Make this drawable mutable. |
void
|
setAlpha(int alpha)
Specify an alpha value for the drawable. |
void
|
setAutoMirrored(boolean mirrored)
Set whether this Drawable is automatically mirrored when its layout direction is RTL (right-to left). |
void
|
setColorFilter(ColorFilter colorFilter)
Specify an optional color filter for the drawable. |
void
|
setTintList(ColorStateList tint)
Specifies tint color for this drawable as a color state list. |
void
|
setTintMode(PorterDuff.Mode tintMode)
Specifies a tint blending mode for this drawable. |
Protected methods | |
---|---|
boolean
|
onStateChange(int[] stateSet)
Override this in your subclass to change appearance if you recognize the specified state. |
Inherited methods | |
---|---|
From
class
android.graphics.drawable.Drawable
| |
From
class
java.lang.Object
|
void applyTheme (Resources.Theme t)
Applies the specified theme to this Drawable and its children.
Parameters | |
---|---|
t |
Resources.Theme :
the theme to apply
|
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 | |
---|---|
canvas |
Canvas :
The canvas to draw into
|
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.
Returns | |
---|---|
int |
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 | |
---|---|
int |
Returns a mask of the changing configuration parameters, as
defined by ActivityInfo . |
ColorFilter getColorFilter ()
Returns the current color filter, or null
if none set.
Returns | |
---|---|
ColorFilter |
the current color filter, or null if none set
|
Drawable.ConstantState getConstantState ()
Return a Drawable.ConstantState
instance that holds the shared state of this Drawable.
Returns | |
---|---|
Drawable.ConstantState |
The ConstantState associated to that Drawable. |
int getIntrinsicHeight ()
Returns the drawable's intrinsic height.
Intrinsic height is the height at which the drawable would like to be laid out, including any inherent padding. If the drawable has no intrinsic height, such as a solid color, this method returns -1.
Returns | |
---|---|
int |
the intrinsic height, or -1 if no intrinsic height |
int getIntrinsicWidth ()
Returns the drawable's intrinsic width.
Intrinsic width is the width at which the drawable would like to be laid out, including any inherent padding. If the drawable has no intrinsic width, such as a solid color, this method returns -1.
Returns | |
---|---|
int |
the intrinsic width, or -1 if no intrinsic width |
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 |
int The opacity class of the Drawable. |
void inflate (Resources r, XmlPullParser parser, AttributeSet attrs, Resources.Theme theme)
Inflate this Drawable from an XML resource optionally styled by a theme. This can't be called more than once for each Drawable. Note that framework may have called this once to create the Drawable instance from XML resource.
Parameters | |
---|---|
r |
Resources :
Resources used to resolve attribute values |
parser |
XmlPullParser :
XML parser from which to inflate this Drawable |
attrs |
AttributeSet :
Base set of attribute values |
theme |
Resources.Theme :
Theme to apply, may be null |
Throws | |
---|---|
XmlPullParserException |
|
IOException |
boolean isAutoMirrored ()
Tells if this Drawable will be automatically mirrored when its layout direction is RTL
right-to-left. See LayoutDirection
.
Returns | |
---|---|
boolean |
boolean Returns true if this Drawable will be automatically mirrored. |
boolean isStateful ()
Indicates whether this drawable will change its appearance based on state. Clients can use this to determine whether it is necessary to calculate their state and call setState.
Returns | |
---|---|
boolean |
True if this drawable changes its appearance based on state, false otherwise. |
Drawable mutate ()
Make this drawable mutable. This operation cannot be reversed. A mutable drawable is guaranteed to not share its state with any other drawable. This is especially useful when you need to modify properties of drawables loaded from resources. By default, all drawables instances loaded from the same resource share a common state; if you modify the state of one instance, all the other instances will receive the same modification. Calling this method on a mutable Drawable will have no effect.
Returns | |
---|---|
Drawable |
This drawable. |
void setAlpha (int alpha)
Specify an alpha value for the drawable. 0 means fully transparent, and 255 means fully opaque.
Parameters | |
---|---|
alpha |
int
|
void setAutoMirrored (boolean mirrored)
Set whether this Drawable is automatically mirrored when its layout direction is RTL
(right-to left). See LayoutDirection
.
Parameters | |
---|---|
mirrored |
boolean :
Set to true if the Drawable should be mirrored, false if not.
|
void setColorFilter (ColorFilter colorFilter)
Specify an optional color filter for the drawable.
If a Drawable has a ColorFilter, each output pixel of the Drawable's drawing contents will be modified by the color filter before it is blended onto the render target of a Canvas.
Pass null
to remove any existing color filter.
Note: Setting a non-null
color
filter disables tint
.
Parameters | |
---|---|
colorFilter |
ColorFilter :
The color filter to apply, or null to remove the
existing color filter
|
void setTintList (ColorStateList tint)
Specifies tint color for this drawable as a color state list.
A Drawable's drawing content will be blended together with its tint
before it is drawn to the screen. This functions similarly to
setColorFilter(int, PorterDuff.Mode)
.
Note: Setting a color filter via
setColorFilter(ColorFilter)
or
setColorFilter(int, PorterDuff.Mode)
overrides tint.
Parameters | |
---|---|
tint |
ColorStateList :
Color state list to use for tinting this drawable, or
null to clear the tint |
void setTintMode (PorterDuff.Mode tintMode)
Specifies a tint blending mode for this drawable.
Defines how this drawable's tint color should be blended into the drawable
before it is drawn to screen. Default tint mode is SRC_IN
.
Note: Setting a color filter via
setColorFilter(ColorFilter)
or
setColorFilter(int, PorterDuff.Mode)
overrides tint.
Parameters | |
---|---|
tintMode |
PorterDuff.Mode :
A Porter-Duff blending mode |
boolean onStateChange (int[] stateSet)
Override this in your subclass to change appearance if you recognize the specified state.
Parameters | |
---|---|
stateSet |
int
|
Returns | |
---|---|
boolean |
Returns true if the state change has caused the appearance of the Drawable to change (that is, it needs to be drawn), else false if it looks the same and there is no need to redraw it since its last state. |