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PathMotion

public abstract class PathMotion
extends Object

java.lang.Object
   ↳ android.transition.PathMotion


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

Transitions such as 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.

 <changeBounds>
     <pathMotion class="my.app.transition.MyPathMotion"/>
 </changeBounds>
 
 

Summary

Public constructors

PathMotion()
PathMotion(Context context, AttributeSet attrs)

Public methods

abstract Path getPath(float startX, float startY, float endX, float endY)

Provide a Path to interpolate between two points (startX, startY) and (endX, endY).

Inherited methods

Public constructors

PathMotion

added in API level 21
public PathMotion ()

PathMotion

added in API level 21
public PathMotion (Context context, 
                AttributeSet attrs)

Parameters
context Context

attrs AttributeSet

Public methods

getPath

added in API level 21
public abstract Path getPath (float startX, 
                float startY, 
                float endX, 
                float endY)

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.

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