Added in API level 1

Summary: Constants | Ctors | Methods | Inherited Methods

Gravity

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Kotlin |Java

public class Gravity
extends Object

java.lang.Object
↳	android.view.Gravity

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Standard constants and tools for placing an object within a potentially larger container.

Summary

Constants
int	AXIS_CLIP Raw bit controlling whether the right/bottom edge is clipped to its container, based on the gravity direction being applied.
int	AXIS_PULL_AFTER Raw bit controlling how the right/bottom edge is placed.
int	AXIS_PULL_BEFORE Raw bit controlling how the left/top edge is placed.
int	AXIS_SPECIFIED Raw bit indicating the gravity for an axis has been specified.
int	AXIS_X_SHIFT Bits defining the horizontal axis.
int	AXIS_Y_SHIFT Bits defining the vertical axis.
int	BOTTOM Push object to the bottom of its container, not changing its size.
int	CENTER Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.
int	CENTER_HORIZONTAL Place object in the horizontal center of its container, not changing its size.
int	CENTER_VERTICAL Place object in the vertical center of its container, not changing its size.
int	CLIP_HORIZONTAL Flag to clip the edges of the object to its container along the horizontal axis.
int	CLIP_VERTICAL Flag to clip the edges of the object to its container along the vertical axis.
int	DISPLAY_CLIP_HORIZONTAL Special constant to enable clipping to an overall display along the horizontal dimension.
int	DISPLAY_CLIP_VERTICAL Special constant to enable clipping to an overall display along the vertical dimension.
int	END Push object to x-axis position at the end of its container, not changing its size.
int	FILL Grow the horizontal and vertical size of the object if needed so it completely fills its container.
int	FILL_HORIZONTAL Grow the horizontal size of the object if needed so it completely fills its container.
int	FILL_VERTICAL Grow the vertical size of the object if needed so it completely fills its container.
int	HORIZONTAL_GRAVITY_MASK Binary mask to get the absolute horizontal gravity of a gravity.
int	LEFT Push object to the left of its container, not changing its size.
int	NO_GRAVITY Constant indicating that no gravity has been set *
int	RELATIVE_HORIZONTAL_GRAVITY_MASK Binary mask for the horizontal gravity and script specific direction bit.
int	RELATIVE_LAYOUT_DIRECTION Raw bit controlling whether the layout direction is relative or not (START/END instead of absolute LEFT/RIGHT).
int	RIGHT Push object to the right of its container, not changing its size.
int	START Push object to x-axis position at the start of its container, not changing its size.
int	TOP Push object to the top of its container, not changing its size.
int	VERTICAL_GRAVITY_MASK Binary mask to get the vertical gravity of a gravity.

Public constructors
Gravity()

Public methods
static void	apply(int gravity, int w, int h, Rect container, int xAdj, int yAdj, Rect outRect) Apply a gravity constant to an object.
static void	apply(int gravity, int w, int h, Rect container, Rect outRect, int layoutDirection) Apply a gravity constant to an object and take care if layout direction is RTL or not.
static void	apply(int gravity, int w, int h, Rect container, int xAdj, int yAdj, Rect outRect, int layoutDirection) Apply a gravity constant to an object.
static void	apply(int gravity, int w, int h, Rect container, Rect outRect) Apply a gravity constant to an object.
static void	applyDisplay(int gravity, Rect display, Rect inoutObj) Apply additional gravity behavior based on the overall "display" that an object exists in.
static void	applyDisplay(int gravity, Rect display, Rect inoutObj, int layoutDirection) Apply additional gravity behavior based on the overall "display" that an object exists in.
static int	getAbsoluteGravity(int gravity, int layoutDirection) Convert script specific gravity to absolute horizontal value.
static boolean	isHorizontal(int gravity) Indicate whether the supplied gravity has an horizontal pull.
static boolean	isVertical(int gravity) Indicate whether the supplied gravity has a vertical pull.

Inherited methods

From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait(long timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Constants

AXIS_CLIP

Added in API level 3

public static final int AXIS_CLIP

Raw bit controlling whether the right/bottom edge is clipped to its container, based on the gravity direction being applied.

Constant Value: 8 (0x00000008)

AXIS_PULL_AFTER

Added in API level 1

public static final int AXIS_PULL_AFTER

Raw bit controlling how the right/bottom edge is placed.

Constant Value: 4 (0x00000004)

AXIS_PULL_BEFORE

Added in API level 1

public static final int AXIS_PULL_BEFORE

Raw bit controlling how the left/top edge is placed.

Constant Value: 2 (0x00000002)

AXIS_SPECIFIED

Added in API level 1

public static final int AXIS_SPECIFIED

Raw bit indicating the gravity for an axis has been specified.

Constant Value: 1 (0x00000001)

AXIS_X_SHIFT

Added in API level 1

public static final int AXIS_X_SHIFT

Bits defining the horizontal axis.

Constant Value: 0 (0x00000000)

AXIS_Y_SHIFT

Added in API level 1

public static final int AXIS_Y_SHIFT

Bits defining the vertical axis.

Constant Value: 4 (0x00000004)

BOTTOM

Added in API level 1

public static final int BOTTOM

Push object to the bottom of its container, not changing its size.

Constant Value: 80 (0x00000050)

CENTER

Added in API level 1

public static final int CENTER

Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.

Constant Value: 17 (0x00000011)

CENTER_HORIZONTAL

Added in API level 1

public static final int CENTER_HORIZONTAL

Place object in the horizontal center of its container, not changing its size.

Constant Value: 1 (0x00000001)

CENTER_VERTICAL

Added in API level 1

public static final int CENTER_VERTICAL

Place object in the vertical center of its container, not changing its size.

Constant Value: 16 (0x00000010)

CLIP_HORIZONTAL

Added in API level 3

public static final int CLIP_HORIZONTAL

Flag to clip the edges of the object to its container along the horizontal axis.

Constant Value: 8 (0x00000008)

CLIP_VERTICAL

Added in API level 3

public static final int CLIP_VERTICAL

Flag to clip the edges of the object to its container along the vertical axis.

Constant Value: 128 (0x00000080)

DISPLAY_CLIP_HORIZONTAL

Added in API level 3

public static final int DISPLAY_CLIP_HORIZONTAL

Special constant to enable clipping to an overall display along the horizontal dimension. This is not applied by default by apply(int, int, int, android.graphics.Rect, int, int, android.graphics.Rect); you must do so yourself by calling applyDisplay(int, Rect, Rect).

Constant Value: 16777216 (0x01000000)

DISPLAY_CLIP_VERTICAL

Added in API level 3

public static final int DISPLAY_CLIP_VERTICAL

Special constant to enable clipping to an overall display along the vertical dimension. This is not applied by default by apply(int, int, int, android.graphics.Rect, int, int, android.graphics.Rect); you must do so yourself by calling applyDisplay(int, Rect, Rect).

Constant Value: 268435456 (0x10000000)

END

Added in API level 14

public static final int END

Push object to x-axis position at the end of its container, not changing its size.

Constant Value: 8388613 (0x00800005)

FILL

Added in API level 1

public static final int FILL

Grow the horizontal and vertical size of the object if needed so it completely fills its container.

Constant Value: 119 (0x00000077)

FILL_HORIZONTAL

Added in API level 1

public static final int FILL_HORIZONTAL

Grow the horizontal size of the object if needed so it completely fills its container.

Constant Value: 7 (0x00000007)

FILL_VERTICAL

Added in API level 1

public static final int FILL_VERTICAL

Grow the vertical size of the object if needed so it completely fills its container.

Constant Value: 112 (0x00000070)

HORIZONTAL_GRAVITY_MASK

Added in API level 1

public static final int HORIZONTAL_GRAVITY_MASK

Binary mask to get the absolute horizontal gravity of a gravity.

Constant Value: 7 (0x00000007)

LEFT

Added in API level 1

public static final int LEFT

Push object to the left of its container, not changing its size.

Constant Value: 3 (0x00000003)

NO_GRAVITY

Added in API level 1

public static final int NO_GRAVITY

Constant indicating that no gravity has been set *

Constant Value: 0 (0x00000000)

RELATIVE_HORIZONTAL_GRAVITY_MASK

Added in API level 14

public static final int RELATIVE_HORIZONTAL_GRAVITY_MASK

Binary mask for the horizontal gravity and script specific direction bit.

Constant Value: 8388615 (0x00800007)

RELATIVE_LAYOUT_DIRECTION

Added in API level 14

public static final int RELATIVE_LAYOUT_DIRECTION

Raw bit controlling whether the layout direction is relative or not (START/END instead of absolute LEFT/RIGHT).

Constant Value: 8388608 (0x00800000)

RIGHT

Added in API level 1

public static final int RIGHT

Push object to the right of its container, not changing its size.

Constant Value: 5 (0x00000005)

START

Added in API level 14

public static final int START

Push object to x-axis position at the start of its container, not changing its size.

Constant Value: 8388611 (0x00800003)

TOP

Added in API level 1

public static final int TOP

Push object to the top of its container, not changing its size.

Constant Value: 48 (0x00000030)

VERTICAL_GRAVITY_MASK

Added in API level 1

public static final int VERTICAL_GRAVITY_MASK

Binary mask to get the vertical gravity of a gravity.

Constant Value: 112 (0x00000070)

Public constructors

Gravity

public Gravity ()

Public methods

apply

Added in API level 1

public static void apply (int gravity, 
                int w, 
                int h, 
                Rect container, 
                int xAdj, 
                int yAdj, 
                Rect outRect)

Apply a gravity constant to an object.

Parameters
gravity	int: The desired placement of the object, as defined by the constants in this class.
w	int: The horizontal size of the object.
h	int: The vertical size of the object.
container	Rect: The frame of the containing space, in which the object will be placed. Should be large enough to contain the width and height of the object. This value cannot be null.
xAdj	int: Offset to apply to the X axis. If gravity is LEFT this pushes it to the right; if gravity is RIGHT it pushes it to the left; if gravity is CENTER_HORIZONTAL it pushes it to the right or left; otherwise it is ignored.
yAdj	int: Offset to apply to the Y axis. If gravity is TOP this pushes it down; if gravity is BOTTOM it pushes it up; if gravity is CENTER_VERTICAL it pushes it down or up; otherwise it is ignored.
outRect	Rect: Receives the computed frame of the object in its container. This value cannot be null.

apply

Added in API level 17

public static void apply (int gravity, 
                int w, 
                int h, 
                Rect container, 
                Rect outRect, 
                int layoutDirection)

Apply a gravity constant to an object and take care if layout direction is RTL or not.

Parameters
gravity	int: The desired placement of the object, as defined by the constants in this class.
w	int: The horizontal size of the object.
h	int: The vertical size of the object.
container	Rect: The frame of the containing space, in which the object will be placed. Should be large enough to contain the width and height of the object. This value cannot be null.
outRect	Rect: Receives the computed frame of the object in its container. This value cannot be null.
layoutDirection	int: The layout direction.

See also:

• View.LAYOUT_DIRECTION_LTR
• View.LAYOUT_DIRECTION_RTL

apply

Added in API level 17

public static void apply (int gravity, 
                int w, 
                int h, 
                Rect container, 
                int xAdj, 
                int yAdj, 
                Rect outRect, 
                int layoutDirection)

Apply a gravity constant to an object.

Parameters
gravity	int: The desired placement of the object, as defined by the constants in this class.
w	int: The horizontal size of the object.
h	int: The vertical size of the object.
container	Rect: The frame of the containing space, in which the object will be placed. Should be large enough to contain the width and height of the object. This value cannot be null.
xAdj	int: Offset to apply to the X axis. If gravity is LEFT this pushes it to the right; if gravity is RIGHT it pushes it to the left; if gravity is CENTER_HORIZONTAL it pushes it to the right or left; otherwise it is ignored.
yAdj	int: Offset to apply to the Y axis. If gravity is TOP this pushes it down; if gravity is BOTTOM it pushes it up; if gravity is CENTER_VERTICAL it pushes it down or up; otherwise it is ignored.
outRect	Rect: Receives the computed frame of the object in its container. This value cannot be null.
layoutDirection	int: The layout direction.

See also:

• View.LAYOUT_DIRECTION_LTR
• View.LAYOUT_DIRECTION_RTL

apply

Added in API level 1

public static void apply (int gravity, 
                int w, 
                int h, 
                Rect container, 
                Rect outRect)

Apply a gravity constant to an object. This supposes that the layout direction is LTR.

Parameters
gravity	int: The desired placement of the object, as defined by the constants in this class.
w	int: The horizontal size of the object.
h	int: The vertical size of the object.
container	Rect: The frame of the containing space, in which the object will be placed. Should be large enough to contain the width and height of the object.
outRect	Rect: Receives the computed frame of the object in its container.

applyDisplay

Added in API level 3

public static void applyDisplay (int gravity, 
                Rect display, 
                Rect inoutObj)

Apply additional gravity behavior based on the overall "display" that an object exists in. This can be used after apply(int, int, int, android.graphics.Rect, int, int, android.graphics.Rect) to place the object within a visible display. By default this moves or clips the object to be visible in the display; the gravity flags DISPLAY_CLIP_HORIZONTAL and DISPLAY_CLIP_VERTICAL can be used to change this behavior.

Parameters
gravity	int: Gravity constants to modify the placement within the display.
display	Rect: The rectangle of the display in which the object is being placed. This value cannot be null.
inoutObj	Rect: Supplies the current object position; returns with it modified if needed to fit in the display. This value cannot be null.

applyDisplay

Added in API level 17

public static void applyDisplay (int gravity, 
                Rect display, 
                Rect inoutObj, 
                int layoutDirection)

Apply additional gravity behavior based on the overall "display" that an object exists in. This can be used after apply(int, int, int, android.graphics.Rect, int, int, android.graphics.Rect) to place the object within a visible display. By default this moves or clips the object to be visible in the display; the gravity flags DISPLAY_CLIP_HORIZONTAL and DISPLAY_CLIP_VERTICAL can be used to change this behavior.

Parameters
gravity	int: Gravity constants to modify the placement within the display.
display	Rect: The rectangle of the display in which the object is being placed. This value cannot be null.
inoutObj	Rect: Supplies the current object position; returns with it modified if needed to fit in the display. This value cannot be null.
layoutDirection	int: The layout direction.

See also:

• View.LAYOUT_DIRECTION_LTR
• View.LAYOUT_DIRECTION_RTL

getAbsoluteGravity

Added in API level 14

public static int getAbsoluteGravity (int gravity, 
                int layoutDirection)

Convert script specific gravity to absolute horizontal value.

if horizontal direction is LTR, then START will set LEFT and END will set RIGHT. if horizontal direction is RTL, then START will set RIGHT and END will set LEFT.

Parameters
gravity	int: The gravity to convert to absolute (horizontal) values.
layoutDirection	int: The layout direction.

Returns
int	gravity converted to absolute (horizontal) values.

isHorizontal

Added in API level 1

public static boolean isHorizontal (int gravity)

Indicate whether the supplied gravity has an horizontal pull.

Parameters
gravity	int: the gravity to check for horizontal pull

Returns
boolean	true if the supplied gravity has an horizontal pull

isVertical

Added in API level 1

public static boolean isVertical (int gravity)

Indicate whether the supplied gravity has a vertical pull.

Parameters
gravity	int: the gravity to check for vertical pull

Returns
boolean	true if the supplied gravity has a vertical pull