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FloatEvaluator

public class FloatEvaluator
extends Object implements TypeEvaluator<Number>

java.lang.Object
   ↳ android.animation.FloatEvaluator


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.

Inherited methods

Public constructors

FloatEvaluator

added in API level 11
public FloatEvaluator ()

Public methods

evaluate

added in API level 14
public 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. 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.