MotionKey

Artifact: androidx.constraintlayout:constraintlayout-core

View Source

Added in 1.1.0

---

Kotlin |Java

public abstract class MotionKey implements TypedValues

Known direct subclasses

MotionKeyAttributes, MotionKeyCycle, MotionKeyPosition, MotionKeyTimeCycle, MotionKeyTrigger

MotionKeyAttributes
MotionKeyCycle
MotionKeyPosition
MotionKeyTimeCycle
MotionKeyTrigger

---

Base class in an element in a KeyFrame

Summary

Constants
static final String	ALPHA = "alpha"
static final String	CUSTOM = "CUSTOM"
static final String	ELEVATION = "elevation"
static final String	ROTATION = "rotationZ"
static final String	ROTATION_X = "rotationX"
static final String	SCALE_X = "scaleX"
static final String	SCALE_Y = "scaleY"
static final String	TRANSITION_PATH_ROTATE = "transitionPathRotate"
static final String	TRANSLATION_X = "translationX"
static final String	TRANSLATION_Y = "translationY"
static final String	VISIBILITY = "visibility"

Public fields
static int	UNSET
HashMap<String, CustomVariable>	mCustom
int	mFramePosition
int	mType

Public constructors
MotionKey()

Public methods
abstract void	addValues(HashMap<String, SplineSet> splines) Defines method to add a a view to splines derived form this key frame.
abstract MotionKey	clone()
MotionKey	copy(MotionKey src)
abstract void	getAttributeNames(HashSet<String> attributes)
int	getFramePosition() Gets the current frame position
void	setCustomAttribute(String name, int type, boolean value)
void	setCustomAttribute(String name, int type, float value)
void	setCustomAttribute(String name, int type, int value)
void	setCustomAttribute(String name, int type, String value)
void	setFramePosition(int pos) sets the frame position
void	setInterpolation(HashMap<String, Integer> interpolation) Key frame can specify the type of interpolation it wants on various attributes For each string it set it to -1, CurveFit.LINEAR or CurveFit.SPLINE
boolean	setValue(int type, boolean value) Used to set boolean values
boolean	setValue(int type, float value) Used to set float values
boolean	setValue(int type, int value) Used to set integer values
boolean	setValue(int type, String value) Used to set String values
MotionKey	setViewId(int id)

Inherited Constants
From androidx.constraintlayout.core.motion.utils.TypedValues static final int BOOLEAN_MASK = 1 static final int FLOAT_MASK = 4 static final int INT_MASK = 2 static final int STRING_MASK = 8 static final String S_CUSTOM = "CUSTOM" static final int TYPE_FRAME_POSITION = 100 static final int TYPE_TARGET = 101

Inherited methods
From androidx.constraintlayout.core.motion.utils.TypedValues abstract int getId(String name)

Constants

ALPHA

Added in 1.1.0

public static final String ALPHA = "alpha"

CUSTOM

Added in 1.1.0

public static final String CUSTOM = "CUSTOM"

ELEVATION

Added in 1.1.0

public static final String ELEVATION = "elevation"

ROTATION

Added in 1.1.0

public static final String ROTATION = "rotationZ"

ROTATION_X

Added in 1.1.0

public static final String ROTATION_X = "rotationX"

SCALE_X

Added in 1.1.0

public static final String SCALE_X = "scaleX"

SCALE_Y

Added in 1.1.0

public static final String SCALE_Y = "scaleY"

TRANSITION_PATH_ROTATE

Added in 1.1.0

public static final String TRANSITION_PATH_ROTATE = "transitionPathRotate"

TRANSLATION_X

Added in 1.1.0

public static final String TRANSLATION_X = "translationX"

TRANSLATION_Y

Added in 1.1.0

public static final String TRANSLATION_Y = "translationY"

VISIBILITY

Added in 1.1.0

public static final String VISIBILITY = "visibility"

Public fields

UNSET

Added in 1.1.0

public static int UNSET

mCustom

Added in 1.1.0

public HashMap<String, CustomVariable> mCustom

mFramePosition

Added in 1.1.0

public int mFramePosition

mType

Added in 1.1.0

public int mType

Public constructors

MotionKey

Added in 1.1.0

public MotionKey()

Public methods

addValues

Added in 1.1.0

public abstract void addValues(HashMap<String, SplineSet> splines)

Defines method to add a a view to splines derived form this key frame. The values are written to the spline

Parameters
HashMap<String, SplineSet> splines	splines to write values to

clone

Added in 1.1.0

public abstract MotionKey clone()

copy

Added in 1.1.0

public MotionKey copy(MotionKey src)

getAttributeNames

Added in 1.1.0

public abstract void getAttributeNames(HashSet<String> attributes)

getFramePosition

Added in 1.1.0

public int getFramePosition()

Gets the current frame position

setCustomAttribute

Added in 1.1.0

public void setCustomAttribute(String name, int type, boolean value)

setCustomAttribute

Added in 1.1.0

public void setCustomAttribute(String name, int type, float value)

setCustomAttribute

Added in 1.1.0

public void setCustomAttribute(String name, int type, int value)

setCustomAttribute

Added in 1.1.0

public void setCustomAttribute(String name, int type, String value)

setFramePosition

Added in 1.1.0

public void setFramePosition(int pos)

sets the frame position

setInterpolation

Added in 1.1.0

public void setInterpolation(HashMap<String, Integer> interpolation)

Key frame can specify the type of interpolation it wants on various attributes For each string it set it to -1, CurveFit.LINEAR or CurveFit.SPLINE

setValue

Added in 1.1.0

public boolean setValue(int type, boolean value)

Used to set boolean values

Returns
boolean	true if it accepted the value

setValue

Added in 1.1.0

public boolean setValue(int type, float value)

Used to set float values

Returns
boolean	true if it accepted the value

setValue

Added in 1.1.0

public boolean setValue(int type, int value)

Used to set integer values

Returns
boolean	true if it accepted the value

setValue

Added in 1.1.0

public boolean setValue(int type, String value)

Used to set String values

Returns
boolean	true if it accepted the value

setViewId

Added in 1.1.0

public MotionKey setViewId(int id)