Android APIs
public class

FloatEvaluator

extends Object
implements TypeEvaluator<Number>
java.lang.Object
   ↳ android.animation.FloatEvaluator

Class Overview

This evaluator can be used to perform type interpolation between float values.

Summary

Public Constructors
FloatEvaluator()
Public Methods
Float evaluate(float fraction, Number startValue, Number 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.
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Inherited Methods
From class java.lang.Object
From interface android.animation.TypeEvaluator

Public Constructors

public FloatEvaluator ()

Added in API level 11

Public Methods

public Float evaluate (float fraction, Number startValue, Number endValue)

Added in API level 14

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 * (v1 - v0), where x0 is startValue, x1 is endValue, and t is fraction.

Parameters
fraction float: The fraction from the starting to the ending values
startValue Number: The start value; should be of type float or Float
endValue Number: The end value; should be of type float or Float
Returns
Float A linear interpolation between the start and end values, given the fraction parameter.