FloatEvaluator

Kotlin |Java

public class FloatEvaluator
extends Object implements TypeEvaluator<Number>

java.lang.Object
↳	android.animation.FloatEvaluator

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

Summary

Public constructors
`FloatEvaluator()`

Public methods
`Float`	`evaluate(float fraction, Number startValue, Number 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.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          android.animation.TypeEvaluator


        abstract
        
        
        
        
        Number


      evaluate(float fraction, Number startValue, Number 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 constructors

FloatEvaluator

public FloatEvaluator ()

Public methods

evaluate

Added in API level 14

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