FloatArrayEvaluator

open class FloatArrayEvaluator : TypeEvaluator<FloatArray!>
kotlin.Any
   ↳ android.animation.FloatArrayEvaluator

This evaluator can be used to perform type interpolation between float[] values. Each index into the array is treated as a separate value to interpolate. For example, evaluating {100, 200} and {300, 400} will interpolate the value at the first index between 100 and 300 and the value at the second index value between 200 and 400.
Requires API level 21 (Android 5.0, Lollipop)

Summary

Public constructors

Create a FloatArrayEvaluator that does not reuse the animated value.

<init>(reuseArray: FloatArray!)

Create a FloatArrayEvaluator that reuses reuseArray for every evaluate() call.

Public methods
open FloatArray!
evaluate(fraction: Float, startValue: FloatArray!, endValue: FloatArray!)

Interpolates the value at each index by the fraction.

Public constructors

<init>

FloatArrayEvaluator()

Create a FloatArrayEvaluator that does not reuse the animated value. Care must be taken when using this option because on every evaluation a new float[] will be allocated.

<init>

FloatArrayEvaluator(reuseArray: FloatArray!)

Create a FloatArrayEvaluator that reuses reuseArray for every evaluate() call. Caution must be taken to ensure that the value returned from android.animation.ValueAnimator#getAnimatedValue() is not cached, modified, or used across threads. The value will be modified on each evaluate() call.

Parameters
reuseArray FloatArray!: The array to modify and return from evaluate.

Public methods

evaluate

added in API level 21
open fun evaluate(fraction: Float, startValue: FloatArray!, endValue: FloatArray!): FloatArray!

Interpolates the value at each index by the fraction. If #FloatArrayEvaluator(float[]) was used to construct this object, reuseArray will be returned, otherwise a new float[] will be returned.
Requires API level 21 (Android 5.0, Lollipop)

Parameters
fraction Float: The fraction from the starting to the ending values
startValue Float: The start value.
endValue Float: The end value.
Return
FloatArray!: A float[] where each element is an interpolation between the same index in startValue and endValue.