MotionKey

Artifact: androidx.constraintlayout:constraintlayout-core

View Source

Added in 1.1.0-alpha13

---

Kotlin |Java

abstract class MotionKey : TypedValues

Known direct subclasses

MotionKeyAttributes, MotionKeyCycle, MotionKeyPosition, MotionKeyTimeCycle, MotionKeyTrigger

MotionKeyAttributes
MotionKeyCycle
MotionKeyPosition
MotionKeyTimeCycle
MotionKeyTrigger

---

Base class in an element in a KeyFrame

Summary

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

Public constructors
MotionKey()

Public functions
abstract Unit	addValues(splines: HashMap<String!, SplineSet!>!) Defines method to add a a view to splines derived form this key frame.
abstract MotionKey!	clone()
MotionKey!	copy(src: MotionKey!)
abstract Unit	getAttributeNames(attributes: HashSet<String!>!)
Int	getFramePosition() Gets the current frame position
Unit	setCustomAttribute(name: String!, type: Int, value: Boolean)
Unit	setCustomAttribute(name: String!, type: Int, value: Float)
Unit	setCustomAttribute(name: String!, type: Int, value: Int)
Unit	setCustomAttribute(name: String!, type: Int, value: String!)
Unit	setFramePosition(pos: Int) sets the frame position
Unit	setInterpolation(interpolation: HashMap<String!, Int!>!) 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(type: Int, value: Boolean) Used to set boolean values
Boolean	setValue(type: Int, value: Float) Used to set float values
Boolean	setValue(type: Int, value: Int) Used to set integer values
Boolean	setValue(type: Int, value: String!) Used to set String values
MotionKey!	setViewId(id: Int)

Public properties
java-static Int	UNSET
HashMap<String!, CustomVariable!>!	mCustom
Int	mFramePosition
Int	mType

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

Inherited functions
From androidx.constraintlayout.core.motion.utils.TypedValues abstract Int getId(name: String!)

Constants

ALPHA

Added in 1.1.0-alpha13

const val ALPHA = "alpha": String!

CUSTOM

Added in 1.1.0-alpha13

const val CUSTOM = "CUSTOM": String!

ELEVATION

Added in 1.1.0-alpha13

const val ELEVATION = "elevation": String!

ROTATION

Added in 1.1.0-alpha13

const val ROTATION = "rotationZ": String!

ROTATION_X

Added in 1.1.0-alpha13

const val ROTATION_X = "rotationX": String!

SCALE_X

Added in 1.1.0-alpha13

const val SCALE_X = "scaleX": String!

SCALE_Y

Added in 1.1.0-alpha13

const val SCALE_Y = "scaleY": String!

TRANSITION_PATH_ROTATE

Added in 1.1.0-alpha13

const val TRANSITION_PATH_ROTATE = "transitionPathRotate": String!

TRANSLATION_X

Added in 1.1.0-alpha13

const val TRANSLATION_X = "translationX": String!

TRANSLATION_Y

Added in 1.1.0-alpha13

const val TRANSLATION_Y = "translationY": String!

VISIBILITY

Added in 1.1.0-alpha13

const val VISIBILITY = "visibility": String!

Public constructors

MotionKey

Added in 1.1.0-alpha13

MotionKey()

Public functions

addValues

Added in 1.1.0-alpha13

abstract fun addValues(splines: HashMap<String!, SplineSet!>!): Unit

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

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

clone

Added in 1.1.0-alpha13

abstract fun clone(): MotionKey!

copy

Added in 1.1.0-alpha13

fun copy(src: MotionKey!): MotionKey!

getAttributeNames

Added in 1.1.0-alpha13

abstract fun getAttributeNames(attributes: HashSet<String!>!): Unit

getFramePosition

Added in 1.1.0-alpha13

fun getFramePosition(): Int

Gets the current frame position

setCustomAttribute

Added in 1.1.0-alpha13

fun setCustomAttribute(name: String!, type: Int, value: Boolean): Unit

setCustomAttribute

Added in 1.1.0-alpha13

fun setCustomAttribute(name: String!, type: Int, value: Float): Unit

setCustomAttribute

Added in 1.1.0-alpha13

fun setCustomAttribute(name: String!, type: Int, value: Int): Unit

setCustomAttribute

Added in 1.1.0-alpha13

fun setCustomAttribute(name: String!, type: Int, value: String!): Unit

setFramePosition

Added in 1.1.0-alpha13

fun setFramePosition(pos: Int): Unit

sets the frame position

setInterpolation

Added in 1.1.0-alpha13

fun setInterpolation(interpolation: HashMap<String!, Int!>!): Unit

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-alpha13

fun setValue(type: Int, value: Boolean): Boolean

Used to set boolean values

Returns
Boolean	true if it accepted the value

setValue

Added in 1.1.0-alpha13

fun setValue(type: Int, value: Float): Boolean

Used to set float values

Returns
Boolean	true if it accepted the value

setValue

Added in 1.1.0-alpha13

fun setValue(type: Int, value: Int): Boolean

Used to set integer values

Returns
Boolean	true if it accepted the value

setValue

Added in 1.1.0-alpha13

fun setValue(type: Int, value: String!): Boolean

Used to set String values

Returns
Boolean	true if it accepted the value

setViewId

Added in 1.1.0-alpha13

fun setViewId(id: Int): MotionKey!

Public properties

UNSET

Added in 1.1.0-alpha13

java-static val UNSET: Int

mCustom

Added in 1.1.0-alpha13

val mCustom: HashMap<String!, CustomVariable!>!

mFramePosition

Added in 1.1.0-alpha13

val mFramePosition: Int

mType

Added in 1.1.0-alpha13

val mType: Int