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TypeEvaluator.javaAPI DocAndroid 5.1 API1871Thu Mar 12 22:22:08 GMT 2015android.animation

TypeEvaluator

public interface TypeEvaluator
Interface for use with the {@link ValueAnimator#setEvaluator(TypeEvaluator)} function. Evaluators allow developers to create animations on arbitrary property types, by allowing them to supply custom evaluators for types that are not automatically understood and used by the animation system.
see
ValueAnimator#setEvaluator(TypeEvaluator)

Fields Summary
Constructors Summary
Methods Summary
public Tevaluate(float fraction, T startValue, T endValue)
This function returns the result of linearly interpolating the start and end values, with fraction representing the proportion between the start and end values. The calculation is a simple parametric calculation: result = x0 + t * (x1 - x0), where x0 is startValue, x1 is endValue, and t is fraction.

param
fraction The fraction from the starting to the ending values
param
startValue The start value.
param
endValue The end value.
return
A linear interpolation between the start and end values, given the fraction parameter.