Added in API level 21

PathMotion

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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).