Added in API level 21

AnimatedStateListDrawable


open class AnimatedStateListDrawable : StateListDrawable

Drawable containing a set of Drawable keyframes where the currently displayed keyframe is chosen based on the current state set. Animations between keyframes may optionally be defined using transition elements.

This drawable can be defined in an XML file with the <animated-selector> element. Each keyframe Drawable is defined in a nested <item> element. Transitions are defined in a nested <transition> element.

Summary

XML attributes
android:state_activated State value for StateListDrawable , set when a view or its parent has been "activated" meaning the user has currently marked it as being of interest.
android:state_active State value for StateListDrawable , set when a view or drawable is considered "active" by its host.
android:state_checkable State identifier indicating that the object may display a check mark.
android:state_checked State identifier indicating that the object is currently checked.
android:state_enabled State value for StateListDrawable , set when a view is enabled.
android:state_first State value for StateListDrawable , set when a view or drawable is in the first position in an ordered set.
android:state_focused State value for StateListDrawable , set when a view has input focus.
android:state_last State value for StateListDrawable , set when a view or drawable is in the last position in an ordered set.
android:state_middle State value for StateListDrawable , set when a view or drawable is in the middle position in an ordered set.
android:state_pressed State value for StateListDrawable , set when the user is pressing down in a view.
android:state_selected State value for StateListDrawable , set when a view (or one of its parents) is currently selected.
android:state_single State value for StateListDrawable , set when a view or drawable is considered "single" by its host.
android:state_window_focused State value for StateListDrawable , set when a view's window has input focus.
Inherited XML attributes
android:constantSize

If true, the drawable's reported internal size will remain constant as the state changes; the size is the maximum of all of the states. If false, the size will vary based on the current state.

May be a boolean value, such as "true" or "false".

android:state_activated

State value for StateListDrawable, set when a view or its parent has been "activated" meaning the user has currently marked it as being of interest. This is an alternative representation of state_checked for when the state should be propagated down the view hierarchy.

May be a boolean value, such as "true" or "false".

android:state_active

State value for StateListDrawable, set when a view or drawable is considered "active" by its host. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_checkable

State identifier indicating that the object may display a check mark. See android.R.attr#state_checked for the identifier that indicates whether it is actually checked.

May be a boolean value, such as "true" or "false".

android:state_checked

State identifier indicating that the object is currently checked. See android.R.attr#state_checkable for an additional identifier that can indicate if any object may ever display a check, regardless of whether state_checked is currently set.

May be a boolean value, such as "true" or "false".

android:state_enabled

State value for StateListDrawable, set when a view is enabled.

May be a boolean value, such as "true" or "false".

android:state_first

State value for StateListDrawable, set when a view or drawable is in the first position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_focused

State value for StateListDrawable, set when a view has input focus.

May be a boolean value, such as "true" or "false".

android:state_last

State value for StateListDrawable, set when a view or drawable is in the last position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_middle

State value for StateListDrawable, set when a view or drawable is in the middle position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_pressed

State value for StateListDrawable, set when the user is pressing down in a view.

May be a boolean value, such as "true" or "false".

android:state_selected

State value for StateListDrawable, set when a view (or one of its parents) is currently selected.

May be a boolean value, such as "true" or "false".

android:state_single

State value for StateListDrawable, set when a view or drawable is considered "single" by its host. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_window_focused

State value for StateListDrawable, set when a view's window has input focus.

May be a boolean value, such as "true" or "false".

android:variablePadding

If true, allows the drawable's padding to change based on the current state that is selected. If false, the padding will stay the same (based on the maximum padding of all the states). Enabling this feature requires that the owner of the drawable deal with performing layout when the state changes, which is often not supported.

May be a boolean value, such as "true" or "false".

android:visible

Indicates whether the drawable should be initially visible.

May be a boolean value, such as "true" or "false".

Public constructors

Public methods
open Unit
addState(stateSet: IntArray, drawable: Drawable, id: Int)

Add a new drawable to the set of keyframes.

open Unit
addTransition(fromId: Int, toId: Int, transition: T, reversible: Boolean)

Adds a new transition between keyframes.

open Unit

Applies the specified theme to this Drawable and its children.

open Unit
inflate(r: Resources, parser: XmlPullParser, attrs: AttributeSet, theme: Resources.Theme?)

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

open Boolean

open Unit

open Drawable

open Boolean
setVisible(visible: Boolean, restart: Boolean)

Inherited functions
Unit addState(stateSet: IntArray!, drawable: Drawable!)

Add a new image/string ID to the set of images.

Int findStateDrawableIndex(stateSet: IntArray)

Gets the index of the drawable with the provided state set.

Int getStateCount()

Gets the number of states contained in this drawable.

Drawable? getStateDrawable(index: Int)

Gets the drawable at an index.

IntArray getStateSet(index: Int)

Gets the state set at an index.

Boolean hasFocusStateSpecified()

Boolean canApplyTheme()

Unit draw(canvas: Canvas)

Int getAlpha()

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.

Drawable.ConstantState? getConstantState()

Drawable getCurrent()

Unit getHotspotBounds(outRect: Rect)

Int getIntrinsicHeight()

Int getIntrinsicWidth()

Int getMinimumHeight()

Int getMinimumWidth()

Int getOpacity()

Insets getOpticalInsets()

Unit getOutline(outline: Outline)

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

This method is called by the default android.view.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.

Boolean getPadding(padding: Rect)

Unit invalidateDrawable(who: Drawable)

Called when the drawable needs to be redrawn. A view at this point should invalidate itself (or at least the part of itself where the drawable appears).

Boolean isAutoMirrored()

Unit jumpToCurrentState()

Unit onBoundsChange(bounds: Rect)

Boolean onLayoutDirectionChanged(layoutDirection: Int)

Called when the drawable's resolved layout direction changes.

Boolean onLevelChange(level: Int)

Unit scheduleDrawable(who: Drawable, what: Runnable, when: Long)

A Drawable can call this to schedule the next frame of its animation. An implementation can generally simply call android.os.Handler#postAtTime(Runnable, Object, long) with the parameters (what, who, when) to perform the scheduling.

Boolean selectDrawable(index: Int)

Sets the currently displayed drawable by index.

If an invalid index is specified, the current drawable will be set to null and the index will be set to -1.

Unit setAlpha(alpha: Int)

Unit setAutoMirrored(mirrored: Boolean)

Unit setColorFilter(colorFilter: ColorFilter?)

Unit setDither(dither: Boolean)

Unit setEnterFadeDuration(ms: Int)

Change the global fade duration when a new drawable is entering the scene.

Unit setExitFadeDuration(ms: Int)

Change the global fade duration when a new drawable is leaving the scene.

Unit setHotspot(x: Float, y: Float)

Unit setHotspotBounds(left: Int, top: Int, right: Int, bottom: Int)

Unit setTintBlendMode(blendMode: BlendMode!)

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 BlendMode.SRC_IN.

Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter)

Unit setTintList(tint: ColorStateList?)

Boolean setVisible(visible: Boolean, restart: Boolean)

Unit unscheduleDrawable(who: Drawable, what: Runnable)

A Drawable can call this to unschedule an action previously scheduled with scheduleDrawable. An implementation can generally simply call android.os.Handler#removeCallbacks(Runnable, Object) with the parameters (what, who) to unschedule the drawable.

Unit clearColorFilter()

Removes the color filter for this drawable.

Rect copyBounds()

Return a copy of the drawable's bounds in a new Rect. This returns the same values as getBounds(), but the returned object is guaranteed to not be changed later by the drawable (i.e. it retains no reference to this rect). If the caller already has a Rect allocated, call copyBounds(rect).

Unit copyBounds(bounds: Rect)

Return a copy of the drawable's bounds in the specified Rect (allocated by the caller). The bounds specify where this will draw when its draw() method is called.

Drawable? createFromPath(pathName: String!)

Create a drawable from file path name.

Drawable? createFromResourceStream(res: Resources?, value: TypedValue?, is: InputStream?, srcName: String?)

Create a drawable from an inputstream, using the given resources and value to determine density information.

Drawable? createFromResourceStream(res: Resources?, value: TypedValue?, is: InputStream?, srcName: String?, opts: BitmapFactory.Options?)

Create a drawable from an inputstream, using the given resources and value to determine density information.

Drawable? createFromStream(is: InputStream?, srcName: String?)

Create a drawable from an inputstream

Drawable createFromXml(r: Resources, parser: XmlPullParser)

Create a drawable from an XML document. For more information on how to create resources in XML, see Drawable Resources.

Drawable createFromXml(r: Resources, parser: XmlPullParser, theme: Resources.Theme?)

Create a drawable from an XML document using an optional Theme. For more information on how to create resources in XML, see Drawable Resources.

Drawable createFromXmlInner(r: Resources, parser: XmlPullParser, attrs: AttributeSet)

Create from inside an XML document. Called on a parser positioned at a tag in an XML document, tries to create a Drawable from that tag. Returns null if the tag is not a valid drawable.

Drawable createFromXmlInner(r: Resources, parser: XmlPullParser, attrs: AttributeSet, theme: Resources.Theme?)

Create a drawable from inside an XML document using an optional Theme. Called on a parser positioned at a tag in an XML document, tries to create a Drawable from that tag. Returns null if the tag is not a valid drawable.

Rect getBounds()

Return the drawable's bounds Rect. Note: for efficiency, the returned object may be the same object stored in the drawable (though this is not guaranteed), so if a persistent copy of the bounds is needed, call copyBounds(rect) instead. You should also not change the object returned by this method as it may be the same object stored in the drawable.

Drawable.Callback? getCallback()

Return the current Callback implementation attached to this Drawable.

ColorFilter? getColorFilter()

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

Rect getDirtyBounds()

Return the drawable's dirty bounds Rect. Note: for efficiency, the returned object may be the same object stored in the drawable (though this is not guaranteed).

By default, this returns the full drawable bounds. Custom drawables may override this method to perform more precise invalidation.

Int getLayoutDirection()

Returns the resolved layout direction for this Drawable.

Int getLevel()

Retrieve the current level.

IntArray getState()

Describes the current state, as a union of primitive states, such as android.R.attr#state_focused, android.R.attr#state_selected, etc. Some drawables may modify their imagery based on the selected state.

Region? getTransparentRegion()

Returns a Region representing the part of the Drawable that is completely transparent. This can be used to perform drawing operations, identifying which parts of the target will not change when rendering the Drawable. The default implementation returns null, indicating no transparent region; subclasses can optionally override this to return an actual Region if they want to supply this optimization information, but it is not required that they do so.

Unit inflate(r: Resources, parser: XmlPullParser, attrs: AttributeSet)

Inflate this Drawable from an XML resource. Does not apply a theme.

Unit inflate(r: Resources, parser: XmlPullParser, attrs: AttributeSet, theme: Resources.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.

Unit invalidateSelf()

Use the current Callback implementation to have this Drawable redrawn. Does nothing if there is no Callback attached to the Drawable.

Boolean isFilterBitmap()

Boolean isProjected()

Whether this drawable requests projection. Indicates that the android.graphics.RenderNode this Drawable will draw into should be drawn immediately after the closest ancestor RenderNode containing a projection receiver.

Boolean isVisible()

Int resolveOpacity(op1: Int, op2: Int)

Return the appropriate opacity value for two source opacities. If either is UNKNOWN, that is returned; else, if either is TRANSLUCENT, that is returned; else, if either is TRANSPARENT, that is returned; else, OPAQUE is returned.

This is to help in implementing getOpacity.

Unit scheduleSelf(what: Runnable, when: Long)

Use the current Callback implementation to have this Drawable scheduled. Does nothing if there is no Callback attached to the Drawable.

Unit setBounds(bounds: Rect)

Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called.

Unit setBounds(left: Int, top: Int, right: Int, bottom: Int)

Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called.

Unit setCallback(cb: Drawable.Callback?)

Bind a Callback object to this Drawable. Required for clients that want to support animated drawables.

Unit setChangingConfigurations(configs: Int)

Set a mask of the configuration parameters for which this drawable may change, requiring that it be re-created.

Unit setColorFilter(color: Int, mode: PorterDuff.Mode)

Specify a color and Porter-Duff mode to be the color filter for this drawable.

Convenience for setColorFilter(android.graphics.ColorFilter) which constructs a PorterDuffColorFilter.

Note: Setting a color filter disables tint.

Unit setFilterBitmap(filter: Boolean)

Set to true to have the drawable filter its bitmaps with bilinear sampling when they are scaled or rotated.

This can improve appearance when bitmaps are rotated. If the drawable does not use bitmaps, this call is ignored.

Boolean setLayoutDirection(layoutDirection: Int)

Set the layout direction for this drawable. Should be a resolved layout direction, as the Drawable has no capacity to do the resolution on its own.

Boolean setLevel(level: Int)

Specify the level for the drawable. This allows a drawable to vary its imagery based on a continuous controller, for example to show progress or volume level.

If the new level you are supplying causes the appearance of the Drawable to change, then it is responsible for calling invalidateSelf in order to have itself redrawn, and true will be returned from this function.

Boolean setState(stateSet: IntArray)

Specify a set of states for the drawable. These are use-case specific, so see the relevant documentation. As an example, the background for widgets like Button understand the following states: [android.R.attr#state_focused, android.R.attr#state_pressed].

If the new state you are supplying causes the appearance of the Drawable to change, then it is responsible for calling invalidateSelf in order to have itself redrawn, and true will be returned from this function.

Note: The Drawable holds a reference on to stateSet until a new state array is given to it, so you must not modify this array during that time.

Unit setTint(tintColor: Int)

Specifies tint color for this drawable.

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,android.graphics.PorterDuff.Mode).

To clear the tint, pass null to setTintList(android.content.res.ColorStateList).

Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter) or setColorFilter(int,android.graphics.PorterDuff.Mode) overrides tint.

Unit setTintMode(tintMode: PorterDuff.Mode?)

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 PorterDuff.Mode.SRC_IN.

Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter) or setColorFilter(int,android.graphics.PorterDuff.Mode) overrides tint.

Unit unscheduleSelf(what: Runnable)

Use the current Callback implementation to have this Drawable unscheduled. Does nothing if there is no Callback attached to the Drawable.

XML attributes

android:state_activated

android:state_activated
State value for StateListDrawable, set when a view or its parent has been "activated" meaning the user has currently marked it as being of interest. This is an alternative representation of state_checked for when the state should be propagated down the view hierarchy.

May be a boolean value, such as "true" or "false".

android:state_active

android:state_active
State value for StateListDrawable, set when a view or drawable is considered "active" by its host. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_checkable

android:state_checkable
State identifier indicating that the object may display a check mark. See android.R.attr#state_checked for the identifier that indicates whether it is actually checked.

May be a boolean value, such as "true" or "false".

android:state_checked

android:state_checked
State identifier indicating that the object is currently checked. See android.R.attr#state_checkable for an additional identifier that can indicate if any object may ever display a check, regardless of whether state_checked is currently set.

May be a boolean value, such as "true" or "false".

android:state_enabled

android:state_enabled
State value for StateListDrawable, set when a view is enabled.

May be a boolean value, such as "true" or "false".

android:state_first

android:state_first
State value for StateListDrawable, set when a view or drawable is in the first position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_focused

android:state_focused
State value for StateListDrawable, set when a view has input focus.

May be a boolean value, such as "true" or "false".

android:state_last

android:state_last
State value for StateListDrawable, set when a view or drawable is in the last position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_middle

android:state_middle
State value for StateListDrawable, set when a view or drawable is in the middle position in an ordered set. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_pressed

android:state_pressed
State value for StateListDrawable, set when the user is pressing down in a view.

May be a boolean value, such as "true" or "false".

android:state_selected

android:state_selected
State value for StateListDrawable, set when a view (or one of its parents) is currently selected.

May be a boolean value, such as "true" or "false".

android:state_single

android:state_single
State value for StateListDrawable, set when a view or drawable is considered "single" by its host. Actual usage may vary between views. Consult the host view documentation for details.

May be a boolean value, such as "true" or "false".

android:state_window_focused

android:state_window_focused
State value for StateListDrawable, set when a view's window has input focus.

May be a boolean value, such as "true" or "false".

Public constructors

AnimatedStateListDrawable

Added in API level 21
AnimatedStateListDrawable()

Public methods

addState

Added in API level 21
open fun addState(
    stateSet: IntArray,
    drawable: Drawable,
    id: Int
): Unit

Add a new drawable to the set of keyframes.

Parameters
stateSet IntArray: An array of resource IDs to associate with the keyframe This value cannot be null.
drawable Drawable: The drawable to show when in the specified state, may not be null
id Int: The unique identifier for the keyframe

addTransition

Added in API level 21
open fun <T> addTransition(
    fromId: Int,
    toId: Int,
    transition: T,
    reversible: Boolean
): Unit where T : Drawable!, T : Animatable!

Adds a new transition between keyframes.

Parameters
fromId Int: Unique identifier of the starting keyframe
toId Int: Unique identifier of the ending keyframe
transition T: An Animatable drawable to use as a transition, may not be null
reversible Boolean: Whether the transition can be reversed

applyTheme

Added in API level 21
open fun applyTheme(theme: Resources.Theme!): Unit

Applies the specified theme to this Drawable and its children.

Parameters
t the theme to apply This value cannot be null.
theme Resources.Theme!: This value may be null.

inflate

Added in API level 21
open fun inflate(
    r: Resources,
    parser: XmlPullParser,
    attrs: AttributeSet,
    theme: Resources.Theme?
): Unit

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: This value cannot be null.
parser XmlPullParser: This value cannot be null.
attrs AttributeSet: This value cannot be null.
theme Resources.Theme?: This value may be null.
Exceptions
org.xmlpull.v1.XmlPullParserException
java.io.IOException

isStateful

Added in API level 21
open fun isStateful(): Boolean
Return
Boolean True if this drawable changes its appearance based on state, false otherwise.

jumpToCurrentState

Added in API level 21
open fun jumpToCurrentState(): Unit

mutate

Added in API level 21
open fun mutate(): Drawable
Return
Drawable This drawable. This value cannot be null.

setVisible

Added in API level 21
open fun setVisible(
    visible: Boolean,
    restart: Boolean
): Boolean
Parameters
visible Boolean: Set to true if visible, false if not.
restart Boolean: You can supply true here to force the drawable to behave as if it has just become visible, even if it had last been set visible. Used for example to force animations to restart.
Return
Boolean boolean Returns true if the new visibility is different than its previous state.

Protected methods

onStateChange

Added in API level 21
protected open fun onStateChange(stateSet: IntArray): Boolean
Parameters
state This value cannot be null.
Return
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.

setConstantState

Added in API level 21
protected open fun setConstantState(state: DrawableContainer.DrawableContainerState): Unit
Parameters
state DrawableContainer.DrawableContainerState: This value cannot be null.