# AnticipateInterpolator

Artifact: [androidx.core:core-animation](https://developer.android.com/jetpack/androidx/releases/core) [View Source](https://cs.android.com/search?q=file:androidx/core/animation/AnticipateInterpolator.java+class:androidx.core.animation.AnticipateInterpolator) Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/core#1.0.0)

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```
public class AnticipateInterpolator implements Interpolator
```

<br />

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An interpolator where the change starts backward then flings forward.

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator#AnticipateInterpolator()()` Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator`. |
| `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator#AnticipateInterpolator(float)(float tension)` Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator`. |
| `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator#AnticipateInterpolator(android.content.Context,android.util.AttributeSet)( @https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/android/content/Context.html context, @https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/android/util/AttributeSet.html attrs )` Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator` from XML. |

| ### Public methods |
|---|---|
| `@https://developer.android.com/reference/androidx/annotation/FloatRange(to = 1) float` | `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator#getInterpolation(float)(@https://developer.android.com/reference/androidx/annotation/FloatRange(from = 0, to = 1) float input)` Maps a value representing the elapsed fraction of an animation to a value that represents the interpolated fraction. |

## Public constructors

### AnticipateInterpolator

Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/core#1.0.0)

```
public AnticipateInterpolator()
```

Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator`.

### AnticipateInterpolator

Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/core#1.0.0)

```
public AnticipateInterpolator(float tension)
```

Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator`.

| Parameters |
|---|---|
| `float tension` | Amount of anticipation. When tension equals 0.0f, there is no anticipation and the interpolator becomes a simple acceleration interpolator. |

### AnticipateInterpolator

Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/core#1.0.0)

```
public AnticipateInterpolator(
    @NonNull Context context,
    @Nullable AttributeSet attrs
)
```

Creates a new instance of `https://developer.android.com/reference/androidx/core/animation/AnticipateInterpolator` from XML.

| Parameters |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/android/content/Context.html context` | The context. |
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/Nullable.html https://developer.android.com/reference/android/util/AttributeSet.html attrs` | The `https://developer.android.com/reference/android/util/AttributeSet.html` from the XML. |

## Public methods

### getInterpolation

```
public @FloatRange(to = 1) float getInterpolation(@FloatRange(from = 0, to = 1) float input)
```

Maps a value representing the elapsed fraction of an animation to a value that represents the interpolated fraction. This interpolated value is then multiplied by the change in value of an animation to derive the animated value at the current elapsed animation time.

| Parameters |
|---|---|
| `@https://developer.android.com/reference/androidx/annotation/FloatRange(from = 0, to = 1) float input` | A value between 0 and 1.0 indicating our current point in the animation where 0 represents the start and 1.0 represents the end |

| Returns |
|---|---|
| `@https://developer.android.com/reference/androidx/annotation/FloatRange(to = 1) float` | The interpolation value. This value can be more than 1.0 for interpolators which overshoot their targets, or less than 0 for interpolators that undershoot their targets. |