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Added in API level 21
Summary: XML Attrs | Inherited XML Attrs | Ctors | Methods | Protected Methods | Inherited Methods | [Expand All]

AnimatedStateListDrawable

public class AnimatedStateListDrawable
extends StateListDrawable

java.lang.Object
   ↳ android.graphics.drawable.Drawable
     ↳ android.graphics.drawable.DrawableContainer
       ↳ android.graphics.drawable.StateListDrawable
         ↳ android.graphics.drawable.AnimatedStateListDrawable

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

From class android.graphics.drawable.StateListDrawable

Public constructors

AnimatedStateListDrawable()

Public methods

void addState(int[] stateSet, Drawable drawable, int id)

Add a new drawable to the set of keyframes.

<T extends Drawable & Animatable> void addTransition(int fromId, int toId, T transition, boolean reversible)

Adds a new transition between keyframes.

void applyTheme(Resources.Theme theme)

Applies the specified theme to this Drawable and its children.

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

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

boolean isStateful()

Indicates whether this drawable will change its appearance based on state.

void jumpToCurrentState()

If this Drawable does transition animations between states, ask that it immediately jump to the current state and skip any active animations.

Drawable mutate()

Make this drawable mutable.

boolean setVisible(boolean visible, boolean restart)

Set whether this Drawable is visible.

Protected methods

boolean onStateChange(int[] stateSet)

Override this in your subclass to change appearance if you recognize the specified state.

void setConstantState(DrawableContainer.DrawableContainerState state)

Inherited methods

From class android.graphics.drawable.StateListDrawable
From class android.graphics.drawable.DrawableContainer
From class android.graphics.drawable.Drawable
From class java.lang.Object
From interface android.graphics.drawable.Drawable.Callback

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. This is an alternative representation of state_checked for when the state should be propagated down the view hierarchy.

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 state_activated.

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.

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 state_active.

android:state_checkable

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

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 state_checkable.

android:state_checked

State identifier indicating that the object is currently checked. See 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.

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 state_checked.

android:state_enabled

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

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 state_enabled.

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.

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 state_first.

android:state_focused

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

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 state_focused.

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.

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 state_last.

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.

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 state_middle.

android:state_pressed

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

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 state_pressed.

android:state_selected

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

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 state_selected.

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.

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 state_single.

android:state_window_focused

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

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 state_window_focused.

Public constructors

AnimatedStateListDrawable

Added in API level 21
AnimatedStateListDrawable ()

Public methods

addState

Added in API level 21
void addState (int[] stateSet, 
                Drawable drawable, 
                int id)

Add a new drawable to the set of keyframes.

Parameters
stateSet int: An array of resource IDs to associate with the keyframe
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
void addTransition (int fromId, 
                int toId, 
                T transition, 
                boolean reversible)

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
void applyTheme (Resources.Theme theme)

Applies the specified theme to this Drawable and its children.

Parameters
theme Resources.Theme: the theme to apply

inflate

Added in API level 21
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

isStateful

Added in API level 21
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.

jumpToCurrentState

Added in API level 21
void jumpToCurrentState ()

If this Drawable does transition animations between states, ask that it immediately jump to the current state and skip any active animations.

mutate

Added in API level 21
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.

setVisible

Added in API level 21
boolean setVisible (boolean visible, 
                boolean restart)

Set whether this Drawable is visible. This generally does not impact the Drawable's behavior, but is a hint that can be used by some Drawables, for example, to decide whether run animations.

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.
Returns
boolean boolean Returns true if the new visibility is different than its previous state.

Protected methods

onStateChange

Added in API level 21
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.

setConstantState

Added in API level 21
void setConstantState (DrawableContainer.DrawableContainerState state)

Parameters
state DrawableContainer.DrawableContainerState
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