Summary: Methods | Inherited Methods

FloatEvaluator

Kotlin |Java

public final class FloatEvaluator
extends Object implements TypeEvaluator<Float>

java.lang.Object
↳	androidx.core.animation.FloatEvaluator

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

Summary

Public methods
`Float`	`evaluate(float fraction, Float startValue, Float 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.
`static FloatEvaluator`	`getInstance()` Returns an instance of `FloatEvaluator` that may be used in `ValueAnimator.setEvaluator(TypeEvaluator)`.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

From interface


        
          androidx.core.animation.TypeEvaluator


      evaluate(float fraction, Float startValue, Float 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.

Public methods

evaluate

public Float evaluate (float fraction, 
                Float startValue, 
                Float 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`	`Float`: The start value; should be of type `float` or `Float`
`endValue`	`Float`: 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.

getInstance

public static FloatEvaluator getInstance ()

Returns an instance of FloatEvaluator that may be used in ValueAnimator.setEvaluator(TypeEvaluator). The same instance may be used in multiple Animators because it holds no state.

Returns
`FloatEvaluator`	An instance of `FloatEvaluator`.