PathMotion

Kotlin |Java

abstract class PathMotion

kotlin.Any
↳	android.transition.PathMotion

Known Direct Subclasses

ArcMotion, PatternPathMotion

ArcMotion	A PathMotion that generates a curved path along an arc on an imaginary circle containing the two points.
PatternPathMotion	A PathMotion that takes a Path pattern and applies it to the separation between two points.

This base class can be extended to provide motion along a Path to Transitions.

Transitions such as android.transition.ChangeBounds move Views, typically in a straight path between the start and end positions. Applications that desire to have these motions move in a curve can change how Views interpolate in two dimensions by extending PathMotion and implementing getPath(float,float,float,float).

This may be used in XML as an element inside a transition.

<code>&lt;changeBounds&gt;
      &lt;pathMotion class="my.app.transition.MyPathMotion"/&gt;
  &lt;/changeBounds&gt;
  </code>

Summary

Public constructors
`PathMotion()`
`PathMotion(context: Context!, attrs: AttributeSet!)`

Public methods
abstract Path!	`getPath(startX: Float, startY: Float, endX: Float, endY: Float)` Provide a Path to interpolate between two points `(startX, startY)` and `(endX, endY)`.

Public constructors

PathMotion

Added in API level 21

PathMotion()

PathMotion

Added in API level 21

PathMotion(
    context: Context!, 
    attrs: AttributeSet!)

Public methods

getPath

Added in API level 21

abstract fun getPath(
    startX: Float, 
    startY: Float, 
    endX: Float, 
    endY: Float
): Path!

Provide a Path to interpolate between two points (startX, startY) and (endX, endY). This allows controlled curved motion along two dimensions.

Parameters
`startX`	Float: The x coordinate of the starting point.
`startY`	Float: The y coordinate of the starting point.
`endX`	Float: The x coordinate of the ending point.
`endY`	Float: The y coordinate of the ending point.

Return
`Path!`	A Path along which the points should be interpolated. The returned Path must start at point `(startX, startY)`, typically using `android.graphics.Path#moveTo(float, float)` and end at `(endX, endY)`.