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IntEvaluator

open class IntEvaluator : TypeEvaluator<Int!>
kotlin.Any
   ↳ androidx.core.animation.IntEvaluator

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

Summary

Public methods
open Int
evaluate(fraction: Float, @NonNull startValue: Int, @NonNull endValue: Int)

This function returns the result of linearly interpolating the start and end values, with fraction representing the proportion between the start and end values.

open static IntEvaluator

Returns an instance of IntEvaluator that may be used in ValueAnimator#setEvaluator(TypeEvaluator).

Public methods

evaluate

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

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

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

getInstance

@NonNull open static fun getInstance(): IntEvaluator

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

Return
IntEvaluator An instance of IntEvaluator.