IntArrayEvaluator

Kotlin |Java

open class IntArrayEvaluator : TypeEvaluator<IntArray!>

kotlin.Any
↳	androidx.core.animation.IntArrayEvaluator

This evaluator can be used to perform type interpolation between int[] 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.

Summary

Public constructors
`<init>()` Create an IntArrayEvaluator that does not reuse the animated value.
`<init>(@Nullable reuseArray: IntArray?)` Create an IntArrayEvaluator that reuses `reuseArray` for every evaluate() call.

Public methods
open IntArray	`evaluate(fraction: Float, @NonNull startValue: IntArray, @NonNull endValue: IntArray)` Interpolates the value at each index by the fraction.

Public constructors

<init>

IntArrayEvaluator()

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

See Also

#IntArrayEvaluator(int[])

<init>

IntArrayEvaluator(@Nullable reuseArray: IntArray?)

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

Parameters
`reuseArray`	IntArray?: The array to modify and return from `evaluate`.

Public methods

evaluate

@NonNull open fun evaluate(
    fraction: Float, 
    @NonNull startValue: IntArray, 
    @NonNull endValue: IntArray
): IntArray

Interpolates the value at each index by the fraction. If IntArrayEvaluator(int[]) was used to construct this object, reuseArray will be returned, otherwise a new int[] will be returned.

Parameters
`fraction`	Float: The fraction from the starting to the ending values
`startValue`	IntArray: The start value.
`endValue`	IntArray: The end value.

Return
`IntArray`	An `int[]` where each element is an interpolation between the same index in startValue and endValue.