Summary: XML Attrs | Ctors | Methods | Inherited Methods | [Expand All]

public class

AnimationDrawable

extends DrawableContainer
implements Animatable Runnable

java.lang.Object
↳	android.graphics.drawable.Drawable
	↳	android.graphics.drawable.DrawableContainer
		↳	android.graphics.drawable.AnimationDrawable

Class Overview

An object used to create frame-by-frame animations, defined by a series of Drawable objects, which can be used as a View object's background.

The simplest way to create a frame-by-frame animation is to define the animation in an XML file, placed in the res/drawable/ folder, and set it as the background to a View object. Then, call run() to start the animation.

An AnimationDrawable defined in XML consists of a single <animation-list> element, and a series of nested <item> tags. Each item defines a frame of the animation. See the example below.

spin_animation.xml file in res/drawable/ folder:

<!-- Animation frames are wheel0.png -- wheel5.png files inside the
 res/drawable/ folder -->
 <animation-list android:id="selected" android:oneshot="false">
    <item android:drawable="@drawable/wheel0" android:duration="50" />
    <item android:drawable="@drawable/wheel1" android:duration="50" />
    <item android:drawable="@drawable/wheel2" android:duration="50" />
    <item android:drawable="@drawable/wheel3" android:duration="50" />
    <item android:drawable="@drawable/wheel4" android:duration="50" />
    <item android:drawable="@drawable/wheel5" android:duration="50" />
 </animation-list>

Here is the code to load and play this animation.

 // Load the ImageView that will host the animation and
 // set its background to our AnimationDrawable XML resource.
 ImageView img = (ImageView)findViewById(R.id.spinning_wheel_image);
 img.setBackgroundResource(R.drawable.spin_animation);

 // Get the background, which has been compiled to an AnimationDrawable object.
 AnimationDrawable frameAnimation = (AnimationDrawable) img.getBackground();

 // Start the animation (looped playback by default).
 frameAnimation.start()

Summary

XML Attributes
Attribute Name	Related Method	Description
android:drawable		Reference to a drawable resource to use for the frame.
android:duration		Amount of time (in milliseconds) to display this frame.
android:oneshot		If true, the animation will only run a single time and then stop.
android:variablePadding		If true, allows the drawable's padding to change based on the current state that is selected.
android:visible		Provides initial visibility state of the drawable; the default value is false.

Public Constructors
	AnimationDrawable()

Public Methods
void	addFrame(Drawable frame, int duration) Add a frame to the animation
int	getDuration(int i)
Drawable	getFrame(int index)
int	getNumberOfFrames()
void	inflate(Resources r, XmlPullParser parser, AttributeSet attrs)
boolean	isOneShot()
boolean	isRunning() Indicates whether the animation is currently running or not.
Drawable	mutate() Make this drawable mutable.
void	run() This method exists for implementation purpose only and should not be called directly.
void	setOneShot(boolean oneShot) Sets whether the animation should play once or repeat.
boolean	setVisible(boolean visible, boolean restart) Set whether this Drawable is visible.
void	start() Starts the animation, looping if necessary.
void	stop() Stops the animation.
void	unscheduleSelf(Runnable what) Use the current `Drawable.Callback` implementation to have this Drawable unscheduled.

[Expand]

Inherited Methods

From class android.graphics.drawable.DrawableContainer

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	getChangingConfigurations() Return a mask of the configuration parameters for which this drawable mau change, requiring that it be re-created.
Drawable.ConstantState	getConstantState()
Drawable	getCurrent()
int	getIntrinsicHeight() Return the intrinsic height of the underlying drawable object.
int	getIntrinsicWidth() Return the intrinsic width of the underlying drawable object.
int	getMinimumHeight() Returns the minimum height suggested by this Drawable.
int	getMinimumWidth() Returns the minimum width suggested by this Drawable.
int	getOpacity() Return the opacity/transparency of this Drawable.
boolean	getPadding(Rect padding) Return in padding the insets suggested by this Drawable for placing content inside the drawable's bounds.
void	invalidateDrawable(Drawable who) Called when the drawable needs to be redrawn.
boolean	isStateful() Indicates whether this view will change its appearance based on state.
Drawable	mutate() Make this drawable mutable.
void	onBoundsChange(Rect bounds) Override this in your subclass to change appearance if you recognize the specified state.
boolean	onLevelChange(int level) Override this in your subclass to change appearance if you vary based on level.
boolean	onStateChange(int[] state) Override this in your subclass to change appearance if you recognize the specified state.
void	scheduleDrawable(Drawable who, Runnable what, long when) A Drawable can call this to schedule the next frame of its animation.
boolean	selectDrawable(int idx)
void	setAlpha(int alpha) Specify an alpha value for the drawable.
void	setColorFilter(ColorFilter cf) Specify an optional colorFilter for the drawable.
void	setConstantState(DrawableContainer.DrawableContainerState state)
void	setDither(boolean dither) Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component.
boolean	setVisible(boolean visible, boolean restart) Set whether this Drawable is visible.
void	unscheduleDrawable(Drawable who, Runnable what) A Drawable can call this to unschedule an action previously scheduled with `scheduleDrawable(Drawable, Runnable, long)`.

From class android.graphics.drawable.Drawable

void	clearColorFilter()
final Rect	copyBounds() Return a copy of the drawable's bounds in a new Rect.
final void	copyBounds(Rect bounds) Return a copy of the drawable's bounds in the specified Rect (allocated by the caller).
static Drawable	createFromPath(String pathName) Create a drawable from file path name.
static Drawable	createFromResourceStream(Resources res, TypedValue value, InputStream is, String srcName, BitmapFactory.Options opts) Create a drawable from an inputstream, using the given resources and value to determine density information.
static Drawable	createFromResourceStream(Resources res, TypedValue value, InputStream is, String srcName) Create a drawable from an inputstream, using the given resources and value to determine density information.
static Drawable	createFromStream(InputStream is, String srcName) Create a drawable from an inputstream
static Drawable	createFromXml(Resources r, XmlPullParser parser) Create a drawable from an XML document.
static Drawable	createFromXmlInner(Resources r, XmlPullParser parser, AttributeSet attrs) Create from inside an XML document.
abstract 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).
final Rect	getBounds() Return the drawable's bounds Rect.
int	getChangingConfigurations() Return a mask of the configuration parameters for which this drawable mau change, requiring that it be re-created.
Drawable.ConstantState	getConstantState()
Drawable	getCurrent()
int	getIntrinsicHeight() Return the intrinsic height of the underlying drawable object.
int	getIntrinsicWidth() Return the intrinsic width of the underlying drawable object.
final int	getLevel() Retrieve the current level.
int	getMinimumHeight() Returns the minimum height suggested by this Drawable.
int	getMinimumWidth() Returns the minimum width suggested by this Drawable.
abstract int	getOpacity() Return the opacity/transparency of this Drawable.
boolean	getPadding(Rect padding) Return in padding the insets suggested by this Drawable for placing content inside the drawable's bounds.
int[]	getState() Describes the current state, as a union of primitve states, such as `state_focused`, `state_selected`, etc.
Region	getTransparentRegion() Returns a Region representing the part of the Drawable that is completely transparent.
void	inflate(Resources r, XmlPullParser parser, AttributeSet attrs)
void	invalidateSelf() Use the current `Drawable.Callback` implementation to have this Drawable redrawn.
boolean	isStateful() Indicates whether this view will change its appearance based on state.
final boolean	isVisible()
Drawable	mutate() Make this drawable mutable.
void	onBoundsChange(Rect bounds) Override this in your subclass to change appearance if you recognize the specified state.
boolean	onLevelChange(int level) Override this in your subclass to change appearance if you vary based on level.
boolean	onStateChange(int[] state) Override this in your subclass to change appearance if you recognize the specified state.
static int	resolveOpacity(int op1, int op2) Return the appropriate opacity value for two source opacities.
void	scheduleSelf(Runnable what, long when) Use the current `Drawable.Callback` implementation to have this Drawable scheduled.
abstract void	setAlpha(int alpha) Specify an alpha value for the drawable.
void	setBounds(Rect bounds) Specify a bounding rectangle for the Drawable.
void	setBounds(int left, int top, int right, int bottom) Specify a bounding rectangle for the Drawable.
final void	setCallback(Drawable.Callback cb) Bind a `Drawable.Callback` object to this Drawable.
void	setChangingConfigurations(int configs) Set a mask of the configuration parameters for which this drawable may change, requiring that it be re-created.
abstract void	setColorFilter(ColorFilter cf) Specify an optional colorFilter for the drawable.
void	setColorFilter(int color, PorterDuff.Mode mode) Specify a color and porterduff mode to be the colorfilter for this drawable.
void	setDither(boolean dither) Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component.
void	setFilterBitmap(boolean filter) Set to true to have the drawable filter its bitmap when scaled or rotated (for drawables that use bitmaps).
final boolean	setLevel(int level) Specify the level for the drawable.
boolean	setState(int[] stateSet) Specify a set of states for the drawable.
boolean	setVisible(boolean visible, boolean restart) Set whether this Drawable is visible.
void	unscheduleSelf(Runnable what) Use the current `Drawable.Callback` implementation to have this Drawable unscheduled.

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Is called before the object's memory is being reclaimed by the VM.
final Class<? extends Object>	getClass() Returns the unique instance of `Class` which represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.

From interface android.graphics.drawable.Animatable

From interface android.graphics.drawable.Drawable.Callback

From interface java.lang.Runnable

XML Attributes

android:drawable

Since: API Level

Reference to a drawable resource to use for the frame. If not given, the drawable must be defined by the first child tag.

Must be a reference to another resource, in the form "@[+][package:]type:name" or to a theme attribute in the form "?[package:][type:]name".

This corresponds to the global attribute resource symbol drawable.

Related Methods

android:duration

Since: API Level

Amount of time (in milliseconds) to display this frame.

Must be an integer value, such as "100".

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 duration.

Related Methods

android:oneshot

Since: API Level

If true, the animation will only run a single time and then stop. If false (the default), it will continually run, restarting at the first frame after the last has finished.

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 oneshot.

Related Methods

android:variablePadding

Since: API Level

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.

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 variablePadding.

Related Methods

android:visible

Since: API Level

Provides initial visibility state of the drawable; the default value is false. See setVisible(boolean, boolean).

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

Public Constructors

public AnimationDrawable ()

Since: API Level 1

Public Methods

public void addFrame (Drawable frame, int duration)

Since: API Level 1

Add a frame to the animation

Parameters

frame	The frame to add
duration	How long in milliseconds the frame should appear

public int getDuration (int i)

Since: API Level 1

Returns

The duration in milliseconds of the frame at the specified index

public Drawable getFrame (int index)

Since: API Level 1

Returns

The Drawable at the specified frame index

public int getNumberOfFrames ()

Since: API Level 1

Returns

The number of frames in the animation

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

Since: API Level 1

Throws

XmlPullParserException
IOException

public boolean isOneShot ()

Since: API Level 1

Returns

True of the animation will play once, false otherwise

public boolean isRunning ()

Since: API Level 1

Indicates whether the animation is currently running or not.

Returns

true if the animation is running, false otherwise

public Drawable mutate ()

Since: API Level 3

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

This drawable.

public void run ()

Since: API Level 1

This method exists for implementation purpose only and should not be called directly. Invoke start() instead.

public void setOneShot (boolean oneShot)

Since: API Level 1

Sets whether the animation should play once or repeat.

Parameters

oneShot	Pass true if the animation should only play once

public boolean setVisible (boolean visible, boolean restart)

Since: API Level 1

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	Set to true if visible, false if not.
restart	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 Returns true if the new visibility is different than its previous state.

public void start ()

Since: API Level 1

Starts the animation, looping if necessary. This method has no effect if the animation is running.

public void stop ()

Since: API Level 1

Stops the animation. This method has no effect if the animation is not running.

public void unscheduleSelf (Runnable what)

Since: API Level 1

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

Parameters

what	The runnable that you no longer want called.

Interfaces

Classes

Enums

AnimationDrawable

Class Overview

Summary

XML Attributes

android:drawable

Related Methods

android:duration

Related Methods

android:oneshot

Related Methods

android:variablePadding

Related Methods

android:visible

Related Methods

Public Constructors

public AnimationDrawable ()

Public Methods

public void addFrame (Drawable frame, int duration)

Parameters

public int getDuration (int i)

Returns

public Drawable getFrame (int index)

Returns

public int getNumberOfFrames ()

Returns

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

Throws

public boolean isOneShot ()

Returns

public boolean isRunning ()

Returns

public Drawable mutate ()

Returns

public void run ()

See Also

public void setOneShot (boolean oneShot)

Parameters

public boolean setVisible (boolean visible, boolean restart)

Parameters

Returns

public void start ()

See Also

public void stop ()

See Also

public void unscheduleSelf (Runnable what)

Parameters