Android APIs
public class

IntArrayEvaluator

extends Object
implements TypeEvaluator<T>
java.lang.Object
   ↳ android.animation.IntArrayEvaluator

Class Overview

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
IntArrayEvaluator()
Create an IntArrayEvaluator that does not reuse the animated value.
IntArrayEvaluator(int[] reuseArray)
Create an IntArrayEvaluator that reuses reuseArray for every evaluate() call.
Public Methods
int[] evaluate(float fraction, int[] startValue, int[] endValue)
Interpolates the value at each index by the fraction.
[Expand]
Inherited Methods
From class java.lang.Object
From interface android.animation.TypeEvaluator

Public Constructors

public 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

public IntArrayEvaluator (int[] reuseArray)

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

Parameters
reuseArray The array to modify and return from evaluate.

Public Methods

public int[] evaluate (float fraction, int[] startValue, int[] endValue)

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 The fraction from the starting to the ending values
startValue The start value.
endValue The end value.
Returns
  • An int[] where each element is an interpolation between the same index in startValue and endValue.