public class

BitmapDrawable

extends Drawable

java.lang.Object
↳	android.graphics.drawable.Drawable
	↳	android.graphics.drawable.BitmapDrawable

Class Overview

A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. You can create a BitmapDrawable from a file path, an input stream, through XML inflation, or from a Bitmap object.

It can be defined in an XML file with the <bitmap> element.

Also see the Bitmap class, which handles the management and transformation of raw bitmap graphics, and should be used when drawing to a Canvas.

Summary

XML Attributes
Attribute Name	Related Method	Description
android:antialias		Enables or disables antialiasing.
android:dither		Enables or disables dithering of the bitmap if the bitmap does not have the same pixel configuration as the screen (for instance: a ARGB 8888 bitmap with an RGB 565 screen).
android:filter		Enables or disables bitmap filtering.
android:gravity		Defines the gravity for the bitmap.
android:src		Identifier of the bitmap file.
android:tileMode		Defines the tile mode.

Public Constructors
	BitmapDrawable() This constructor is deprecated. Use `BitmapDrawable(Resources)` to ensure that the drawable has correctly set its target density.
	BitmapDrawable(Resources res) Create an empty drawable, setting initial target density based on the display metrics of the resources.
	BitmapDrawable(Bitmap bitmap) This constructor is deprecated. Use `BitmapDrawable(Resources, Bitmap)` to ensure that the drawable has correctly set its target density.
	BitmapDrawable(Resources res, Bitmap bitmap) Create drawable from a bitmap, setting initial target density based on the display metrics of the resources.
	BitmapDrawable(String filepath) This constructor is deprecated. Use `BitmapDrawable(Resources, String)` to ensure that the drawable has correctly set its target density.
	BitmapDrawable(Resources res, String filepath) Create a drawable by opening a given file path and decoding the bitmap.
	BitmapDrawable(InputStream is) This constructor is deprecated. Use `BitmapDrawable(Resources, java.io.InputStream)` to ensure that the drawable has correctly set its target density.
	BitmapDrawable(Resources res, InputStream is) Create a drawable by decoding a bitmap from the given input stream.

Public Methods
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 Bitmap	getBitmap()
int	getChangingConfigurations() Return a mask of the configuration parameters for which this drawable mau change, requiring that it be re-created.
final Drawable.ConstantState	getConstantState()
int	getGravity() Get the gravity used to position/stretch the bitmap within its bounds.
int	getIntrinsicHeight() Return the intrinsic height of the underlying drawable object.
int	getIntrinsicWidth() Return the intrinsic width of the underlying drawable object.
int	getOpacity() Return the opacity/transparency of this Drawable.
final Paint	getPaint()
Shader.TileMode	getTileModeX()
Shader.TileMode	getTileModeY()
void	inflate(Resources r, XmlPullParser parser, AttributeSet attrs)
Drawable	mutate() A mutable BitmapDrawable still shares its Bitmap with any other Drawable that comes from the same resource.
void	setAlpha(int alpha) Specify an alpha value for the drawable.
void	setAntiAlias(boolean aa)
void	setColorFilter(ColorFilter cf) Specify an optional colorFilter for the 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).
void	setGravity(int gravity) Set the gravity used to position/stretch the bitmap within its bounds.
void	setTargetDensity(int density) Set the density at which this drawable will be rendered.
void	setTargetDensity(Canvas canvas) Set the density scale at which this drawable will be rendered.
void	setTargetDensity(DisplayMetrics metrics) Set the density scale at which this drawable will be rendered.
void	setTileModeX(Shader.TileMode mode)
void	setTileModeXY(Shader.TileMode xmode, Shader.TileMode ymode)
final void	setTileModeY(Shader.TileMode mode)

Protected Methods
void	onBoundsChange(Rect bounds) Override this in your subclass to change appearance if you recognize the specified state.

[Expand]

Inherited Methods

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.

XML Attributes

android:antialias

Since: API Level

Enables or disables antialiasing.

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 antialias.

Related Methods

android:dither

Since: API Level

Enables or disables dithering of the bitmap if the bitmap does not have the same pixel configuration as the screen (for instance: a ARGB 8888 bitmap with an RGB 565 screen).

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 dither.

Related Methods

android:filter

Since: API Level

Enables or disables bitmap filtering. Filtering is used when the bitmap is shrunk or stretched to smooth its apperance.

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 filter.

Related Methods

android:gravity

Since: API Level

Defines the gravity for the bitmap. The gravity indicates where to position the drawable in its container if the bitmap is smaller than the container.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
`top`	0x30	Push object to the top of its container, not changing its size.
`bottom`	0x50	Push object to the bottom of its container, not changing its size.
`left`	0x03	Push object to the left of its container, not changing its size.
`right`	0x05	Push object to the right of its container, not changing its size.
`center_vertical`	0x10	Place object in the vertical center of its container, not changing its size.
`fill_vertical`	0x70	Grow the vertical size of the object if needed so it completely fills its container.
`center_horizontal`	0x01	Place object in the horizontal center of its container, not changing its size.
`fill_horizontal`	0x07	Grow the horizontal size of the object if needed so it completely fills its container.
`center`	0x11	Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.
`fill`	0x77	Grow the horizontal and vertical size of the object if needed so it completely fills its container.
`clip_vertical`	0x80	Additional option that can be set to have the top and/or bottom edges of the child clipped to its container's bounds. The clip will be based on the vertical gravity: a top gravity will clip the bottom edge, a bottom gravity will clip the top edge, and neither will clip both edges.
`clip_horizontal`	0x08	Additional option that can be set to have the left and/or right edges of the child clipped to its container's bounds. The clip will be based on the horizontal gravity: a left gravity will clip the right edge, a right gravity will clip the left edge, and neither will clip both edges.

This corresponds to the global attribute resource symbol gravity.

Related Methods

android:src

Since: API Level

Identifier of the bitmap file. This attribute is mandatory.

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

May be a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb".

This corresponds to the global attribute resource symbol src.

Related Methods

android:tileMode

Since: API Level

Defines the tile mode. When the tile mode is enabled, the bitmap is repeated. Gravity is ignored when the tile mode is enabled.

Must be one of the following constant values.

Constant	Value	Description
`disabled`	-1	Do not tile the bitmap. This is the default value.
`clamp`	0	Replicates the edge color.
`repeat`	1	Repeats the bitmap in both direction.
`mirror`	2	Repeats the shader's image horizontally and vertically, alternating mirror images so that adjacent images always seam.

This corresponds to the global attribute resource symbol tileMode.

Related Methods

Public Constructors

public BitmapDrawable ()

Since: API Level 1

This constructor is deprecated.
Use BitmapDrawable(Resources) to ensure that the drawable has correctly set its target density.

Create an empty drawable, not dealing with density.

public BitmapDrawable (Resources res)

Since: API Level 4

Create an empty drawable, setting initial target density based on the display metrics of the resources.

public BitmapDrawable (Bitmap bitmap)

Since: API Level 1

This constructor is deprecated.
Use BitmapDrawable(Resources, Bitmap) to ensure that the drawable has correctly set its target density.

Create drawable from a bitmap, not dealing with density.

public BitmapDrawable (Resources res, Bitmap bitmap)

Since: API Level 4

Create drawable from a bitmap, setting initial target density based on the display metrics of the resources.

public BitmapDrawable (String filepath)

Since: API Level 1

This constructor is deprecated.
Use BitmapDrawable(Resources, String) to ensure that the drawable has correctly set its target density.

Create a drawable by opening a given file path and decoding the bitmap.

public BitmapDrawable (Resources res, String filepath)

Since: API Level 5

Create a drawable by opening a given file path and decoding the bitmap.

public BitmapDrawable (InputStream is)

Since: API Level 1

This constructor is deprecated.
Use BitmapDrawable(Resources, java.io.InputStream) to ensure that the drawable has correctly set its target density.

Create a drawable by decoding a bitmap from the given input stream.

public BitmapDrawable (Resources res, InputStream is)

Since: API Level 5

Create a drawable by decoding a bitmap from the given input stream.

Public Methods

public void draw (Canvas canvas)

Since: API Level 1

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

Parameters

canvas	The canvas to draw into

public final Bitmap getBitmap ()

Since: API Level 1

public int getChangingConfigurations ()

Since: API Level 1

Return a mask of the configuration parameters for which this drawable mau 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 Configuration.

public final Drawable.ConstantState getConstantState ()

Since: API Level 1

public int getGravity ()

Since: API Level 1

Get the gravity used to position/stretch the bitmap within its bounds. See android.view.Gravity

Returns

the gravity applied to the bitmap

public int getIntrinsicHeight ()

Since: API Level 1

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 ()

Since: API Level 1

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 ()

Since: API Level 1

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

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 take into account a custom alpha or color filter that has been applied by the client through the setAlpha(int) or setColorFilter(ColorFilter) methods.

Returns

int The opacity class of the Drawable.

public final Paint getPaint ()

Since: API Level 1

public Shader.TileMode getTileModeX ()

Since: API Level 1

public Shader.TileMode getTileModeY ()

Since: API Level 1

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

Since: API Level 1

Throws

XmlPullParserException
IOException

public Drawable mutate ()

Since: API Level 3

A mutable BitmapDrawable still shares its Bitmap with any other Drawable that comes from the same resource.

Returns

This drawable.

public void setAlpha (int alpha)

Since: API Level 1

Specify an alpha value for the drawable. 0 means fully transparent, and 255 means fully opaque.

public void setAntiAlias (boolean aa)

Since: API Level 1

public void setColorFilter (ColorFilter cf)

Since: API Level 1

Specify an optional colorFilter for the drawable. Pass null to remove any filters.

public void setDither (boolean dither)

Since: API Level 1

Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component. This can improve the look on those devices, but can also slow down the drawing a little.

public void setFilterBitmap (boolean filter)

Since: API Level 1

Set to true to have the drawable filter its bitmap when scaled or rotated (for drawables that use bitmaps). If the drawable does not use bitmaps, this call is ignored. This can improve the look when scaled or rotated, but also slows down the drawing.

public void setGravity (int gravity)

Since: API Level 1

Set the gravity used to position/stretch the bitmap within its bounds. See android.view.Gravity

Parameters

gravity	the gravity

public void setTargetDensity (int density)

Since: API Level 4

Set the density at which this drawable will be rendered.

Parameters

density	The density scale for this drawable.

public void setTargetDensity (Canvas canvas)

Since: API Level 4

Set the density scale at which this drawable will be rendered. This method assumes the drawable will be rendered at the same density as the specified canvas.

Parameters

canvas	The Canvas from which the density scale must be obtained.

public void setTargetDensity (DisplayMetrics metrics)

Since: API Level 4

Set the density scale at which this drawable will be rendered.

Parameters

metrics	The DisplayMetrics indicating the density scale for this drawable.

public void setTileModeX (Shader.TileMode mode)

Since: API Level 1

public void setTileModeXY (Shader.TileMode xmode, Shader.TileMode ymode)

Since: API Level 1

public final void setTileModeY (Shader.TileMode mode)

Since: API Level 1

Protected Methods

protected void onBoundsChange (Rect bounds)

Since: API Level 1

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

Interfaces

Classes

Enums

BitmapDrawable

Class Overview

Summary

XML Attributes

android:antialias

Related Methods

android:dither

Related Methods

android:filter

Related Methods

android:gravity

Related Methods

android:src

Related Methods

android:tileMode

Related Methods

Public Constructors

public BitmapDrawable ()

public BitmapDrawable (Resources res)

public BitmapDrawable (Bitmap bitmap)

public BitmapDrawable (Resources res, Bitmap bitmap)

public BitmapDrawable (String filepath)

public BitmapDrawable (Resources res, String filepath)

public BitmapDrawable (InputStream is)

public BitmapDrawable (Resources res, InputStream is)

Public Methods

public void draw (Canvas canvas)

Parameters

public final Bitmap getBitmap ()

public int getChangingConfigurations ()

Returns

public final Drawable.ConstantState getConstantState ()

public int getGravity ()

Returns

public int getIntrinsicHeight ()

public int getIntrinsicWidth ()

public int getOpacity ()

Returns

public final Paint getPaint ()

public Shader.TileMode getTileModeX ()

public Shader.TileMode getTileModeY ()

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

Throws

public Drawable mutate ()

Returns

public void setAlpha (int alpha)

public void setAntiAlias (boolean aa)

public void setColorFilter (ColorFilter cf)

public void setDither (boolean dither)

public void setFilterBitmap (boolean filter)

public void setGravity (int gravity)

Parameters

public void setTargetDensity (int density)

Parameters

See Also

public void setTargetDensity (Canvas canvas)

Parameters

See Also

public void setTargetDensity (DisplayMetrics metrics)

Parameters

See Also

public void setTileModeX (Shader.TileMode mode)

public void setTileModeXY (Shader.TileMode xmode, Shader.TileMode ymode)

public final void setTileModeY (Shader.TileMode mode)

Protected Methods

protected void onBoundsChange (Rect bounds)