# DynamicAnimation

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

*** ** * ** ***


```
public abstract class DynamicAnimation<T extends DynamicAnimation<T>>
```

<br />

Known direct subclasses [FlingAnimation](https://developer.android.com/reference/androidx/dynamicanimation/animation/FlingAnimation), [SpringAnimation](https://developer.android.com/reference/androidx/dynamicanimation/animation/SpringAnimation)

|---|---|
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/FlingAnimation` | Fling animation is an animation that continues an initial momentum (most often from gesture velocity) and gradually slows down. |
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/SpringAnimation` | SpringAnimation is an animation that is driven by a `https://developer.android.com/reference/androidx/dynamicanimation/animation/SpringForce`. |

*** ** * ** ***

This class is the base class of physics-based animations. It manages the animation's lifecycle such as `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#start()` and `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#cancel()`. This base class also handles the common setup for all the subclass animations. For example, DynamicAnimation supports adding `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener` and `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener` so that the important animation events can be observed through the callbacks. The start conditions for any subclass of DynamicAnimation can be set using `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setStartValue(float)` and `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setStartVelocity(float)`.

| Parameters |
|---|---|
| `<T extends https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation<T>>` | subclass of DynamicAnimation |

## Summary

| ### Nested types |
|---|
| `public interface https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener` An animation listener that receives end notifications from an animation. |
| `public interface https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener` Implementors of this interface can add themselves as update listeners to an `DynamicAnimation` instance to receive callbacks on every animation frame, after the current frame's values have been calculated for that `DynamicAnimation`. |
| `public abstract class https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty extends https://developer.android.com/reference/androidx/dynamicanimation/animation/FloatPropertyCompat<https://developer.android.com/reference/android/view/View.html>` ViewProperty holds the access of a property of a `https://developer.android.com/reference/android/view/View.html`. |

| ### Constants |
|---|---|
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ALPHA()` View's alpha property. |
| `static final float` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_ALPHA() = 0.00390625f` The minimum visible change in alpha that can be visible to users. |
| `static final float` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_PIXELS() = 1.0f` The minimum visible change in pixels that can be visible to users. |
| `static final float` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_ROTATION_DEGREES() = 0.1f` The minimum visible change in degrees that can be visible to users. |
| `static final float` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_SCALE() = 0.002f` The minimum visible change in scale that can be visible to users. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION()` View's rotation property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION_X()` View's rotationX property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION_Y()` View's rotationY property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCALE_X()` View's scaleX property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCALE_Y()` View's scaleY property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCROLL_X()` View's scrollX property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCROLL_Y()` View's scrollY property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_X()` View's translationX property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_Y()` View's translationY property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_Z()` View's translationZ property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#X()` View's x property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#Y()` View's y property. |
| `static final https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#Z()` View's z property. |

| ### Public methods |
|---|---|
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#addEndListener(androidx.dynamicanimation.animation.DynamicAnimation.OnAnimationEndListener)(https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener listener)` Adds an end listener to the animation for receiving onAnimationEnd callbacks. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#addUpdateListener(androidx.dynamicanimation.animation.DynamicAnimation.OnAnimationUpdateListener)(https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener listener)` Adds an update listener to the animation for receiving per-frame animation update callbacks. |
| `void` | `@https://developer.android.com/reference/androidx/annotation/MainThread https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#cancel()()` Cancels the on-going animation. |
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/AnimationHandler` | `@https://developer.android.com/reference/androidx/annotation/VisibleForTesting https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#getAnimationHandler()()` Returns the `https://developer.android.com/reference/androidx/dynamicanimation/animation/AnimationHandler` used to schedule updates for this animator. |
| `float` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#getMinimumVisibleChange()()` Returns the minimum change in the animation property that could be visibly different to users. |
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#getScheduler()()` Returns the `https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` used to schedule updates for this animator. |
| `boolean` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#isRunning()()` Returns whether the animation is currently running. |
| `void` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#removeEndListener(androidx.dynamicanimation.animation.DynamicAnimation.OnAnimationEndListener)(https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener listener)` Removes the end listener from the animation, so as to stop receiving animation end callbacks. |
| `void` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#removeUpdateListener(androidx.dynamicanimation.animation.DynamicAnimation.OnAnimationUpdateListener)( https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener listener )` Removes the update listener from the animation, so as to stop receiving animation update callbacks. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setMaxValue(float)(float max)` Sets the max value of the animation. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setMinValue(float)(float min)` Sets the min value of the animation. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setMinimumVisibleChange(float)( @https://developer.android.com/reference/androidx/annotation/FloatRange(from = 0.0, fromInclusive = false) float minimumVisibleChange )` This method sets the minimal change of animation value that is visible to users, which helps determine a reasonable threshold for the animation's termination condition. |
| `void` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setScheduler(androidx.dynamicanimation.animation.FrameCallbackScheduler)(@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler scheduler)` Sets the frame scheduler used to schedule updates for this animator. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setStartValue(float)(float startValue)` Sets the start value of the animation. |
| `T` | `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setStartVelocity(float)(float startVelocity)` Start velocity of the animation. |
| `void` | `@https://developer.android.com/reference/androidx/annotation/MainThread https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#start()()` Starts an animation. |

## Constants

### ALPHA

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

```
public static final DynamicAnimation.ViewProperty ALPHA
```

View's alpha property.

### MIN_VISIBLE_CHANGE_ALPHA

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

```
public static final float MIN_VISIBLE_CHANGE_ALPHA = 0.00390625f
```

The minimum visible change in alpha that can be visible to users.

### MIN_VISIBLE_CHANGE_PIXELS

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

```
public static final float MIN_VISIBLE_CHANGE_PIXELS = 1.0f
```

The minimum visible change in pixels that can be visible to users.

### MIN_VISIBLE_CHANGE_ROTATION_DEGREES

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

```
public static final float MIN_VISIBLE_CHANGE_ROTATION_DEGREES = 0.1f
```

The minimum visible change in degrees that can be visible to users.

### MIN_VISIBLE_CHANGE_SCALE

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

```
public static final float MIN_VISIBLE_CHANGE_SCALE = 0.002f
```

The minimum visible change in scale that can be visible to users.

### ROTATION

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

```
public static final DynamicAnimation.ViewProperty ROTATION
```

View's rotation property.

### ROTATION_X

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

```
public static final DynamicAnimation.ViewProperty ROTATION_X
```

View's rotationX property.

### ROTATION_Y

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

```
public static final DynamicAnimation.ViewProperty ROTATION_Y
```

View's rotationY property.

### SCALE_X

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

```
public static final DynamicAnimation.ViewProperty SCALE_X
```

View's scaleX property.

### SCALE_Y

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

```
public static final DynamicAnimation.ViewProperty SCALE_Y
```

View's scaleY property.

### SCROLL_X

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

```
public static final DynamicAnimation.ViewProperty SCROLL_X
```

View's scrollX property.

### SCROLL_Y

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

```
public static final DynamicAnimation.ViewProperty SCROLL_Y
```

View's scrollY property.

### TRANSLATION_X

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

```
public static final DynamicAnimation.ViewProperty TRANSLATION_X
```

View's translationX property.

### TRANSLATION_Y

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

```
public static final DynamicAnimation.ViewProperty TRANSLATION_Y
```

View's translationY property.

### TRANSLATION_Z

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

```
public static final DynamicAnimation.ViewProperty TRANSLATION_Z
```

View's translationZ property.

### X

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

```
public static final DynamicAnimation.ViewProperty X
```

View's x property.

### Y

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

```
public static final DynamicAnimation.ViewProperty Y
```

View's y property.

### Z

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

```
public static final DynamicAnimation.ViewProperty Z
```

View's z property.

## Public methods

### addEndListener

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

```
public T addEndListener(DynamicAnimation.OnAnimationEndListener listener)
```

Adds an end listener to the animation for receiving onAnimationEnd callbacks. If the listener is `null` or has already been added to the list of listeners for the animation, no op.

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener listener` | the listener to be added |

| Returns |
|---|---|
| `T` | the animation to which the listener is added |

### addUpdateListener

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

```
public T addUpdateListener(DynamicAnimation.OnAnimationUpdateListener listener)
```

Adds an update listener to the animation for receiving per-frame animation update callbacks. If the listener is `null` or has already been added to the list of listeners for the animation, no op.

Note that update listener should only be added before the start of the animation.

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener listener` | the listener to be added |

| Returns |
|---|---|
| `T` | the animation to which the listener is added |

| Throws |
|---|---|
| `https://developer.android.com/reference/java/lang/UnsupportedOperationException.html` | if the update listener is added after the animation has started |

### cancel

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

```
@MainThread
public void cancel()
```

Cancels the on-going animation. If the animation hasn't started, no op. Unless a AnimationHandler is provided via setAnimationHandler, a default AnimationHandler is created on the same thread as the first call to start/cancel an animation. All the subsequent animation lifecycle manipulations need to be on that same thread, until the AnimationHandler is reset (using \[setAnimationHandler\]).

| Throws |
|---|---|
| `https://developer.android.com/reference/android/util/AndroidRuntimeException.html` | if this method is not called on the same thread as the animation handler |

### getAnimationHandler

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/dynamicanimation#1.1.0)

```
@VisibleForTesting
public @NonNull AnimationHandler getAnimationHandler()
```

Returns the `https://developer.android.com/reference/androidx/dynamicanimation/animation/AnimationHandler` used to schedule updates for this animator.

| Returns |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/AnimationHandler` | the `https://developer.android.com/reference/androidx/dynamicanimation/animation/AnimationHandler` for this animator. |

### getMinimumVisibleChange

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

```
public float getMinimumVisibleChange()
```

Returns the minimum change in the animation property that could be visibly different to users.

| Returns |
|---|---|
| `float` | minimum change in property value that is visible to users |

### getScheduler

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/dynamicanimation#1.1.0)

```
public @NonNull FrameCallbackScheduler getScheduler()
```

Returns the `https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` used to schedule updates for this animator. If not already set using `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setScheduler(androidx.dynamicanimation.animation.FrameCallbackScheduler)`, this is initialized to an `https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` that uses the caller thread's `https://developer.android.com/reference/android/view/Choreographer.html`. Otherwise, return the scheduler set via the previous `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#setScheduler(androidx.dynamicanimation.animation.FrameCallbackScheduler)` call.

| Returns |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` | the `https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` for this animator. |

### isRunning

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

```
public boolean isRunning()
```

Returns whether the animation is currently running.

| Returns |
|---|---|
| `boolean` | `true` if the animation is currently running, `false` otherwise |

### removeEndListener

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

```
public void removeEndListener(DynamicAnimation.OnAnimationEndListener listener)
```

Removes the end listener from the animation, so as to stop receiving animation end callbacks.

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationEndListener listener` | the listener to be removed |

### removeUpdateListener

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

```
public void removeUpdateListener(
    DynamicAnimation.OnAnimationUpdateListener listener
)
```

Removes the update listener from the animation, so as to stop receiving animation update callbacks.

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.OnAnimationUpdateListener listener` | the listener to be removed |

### setMaxValue

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

```
public T setMaxValue(float max)
```

Sets the max value of the animation. Animations will not animate beyond their max value. Whether or not animation will come to an end when max value is reached is dependent on the child animation's implementation.

| Parameters |
|---|---|
| `float max` | maximum value of the property to be animated |

| Returns |
|---|---|
| `T` | the Animation whose max value is being set |

### setMinValue

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

```
public T setMinValue(float min)
```

Sets the min value of the animation. Animations will not animate beyond their min value. Whether or not animation will come to an end when min value is reached is dependent on the child animation's implementation.

| Parameters |
|---|---|
| `float min` | minimum value of the property to be animated |

| Returns |
|---|---|
| `T` | the Animation whose min value is being set |

### setMinimumVisibleChange

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

```
public T setMinimumVisibleChange(
    @FloatRange(from = 0.0, fromInclusive = false) float minimumVisibleChange
)
```

This method sets the minimal change of animation value that is visible to users, which helps determine a reasonable threshold for the animation's termination condition. It is critical to set the minimal visible change for custom properties (i.e. non-`ViewProperty`s) unless the custom property is in pixels.

For custom properties, this minimum visible change defaults to change in pixel (i.e. `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_PIXELS()`. It is recommended to adjust this value that is reasonable for the property to be animated. A general rule of thumb to calculate such a value is: minimum visible change = range of custom property value / corresponding pixel range. For example, if the property to be animated is a progress (from 0 to 100) that corresponds to a 200-pixel change. Then the min visible change should be 100 / 200. (i.e. 0.5).

It's not necessary to call this method when animating `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation.ViewProperty`s, as the minimum visible change will be derived from the property. For example, if the property to be animated is in pixels (i.e. `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_X()`, `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_Y()`, `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#TRANSLATION_Z()`, @`https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCROLL_X()` or `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#SCROLL_Y()`), the default minimum visible change is 1 (pixel). For `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION()`, `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION_X()` or `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#ROTATION_Y()`, the animation will use `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_ROTATION_DEGREES()` as the min visible change, which is 1/10. Similarly, the minimum visible change for alpha ( i.e. `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#MIN_VISIBLE_CHANGE_ALPHA()` is defined as 1 / 256.

| Parameters |
|---|---|
| `@https://developer.android.com/reference/androidx/annotation/FloatRange(from = 0.0, fromInclusive = false) float minimumVisibleChange` | minimum change in property value that is visible to users |

| Returns |
|---|---|
| `T` | the animation whose min visible change is being set |

| Throws |
|---|---|
| `https://developer.android.com/reference/java/lang/IllegalArgumentException.html` | if the given threshold is not positive |

### setScheduler

Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/dynamicanimation#1.1.0)

```
public void setScheduler(@NonNull FrameCallbackScheduler scheduler)
```

Sets the frame scheduler used to schedule updates for this animator. Note this should be called before animation running, as it would lead to discontinuity in animations.

| Parameters |
|---|---|
| `@https://jspecify.dev/docs/api/org/jspecify/annotations/NonNull.html https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler scheduler` | The `https://developer.android.com/reference/androidx/dynamicanimation/animation/FrameCallbackScheduler` that will be used to schedule updates for this animator. |

| Throws |
|---|---|
| `https://developer.android.com/reference/android/util/AndroidRuntimeException.html` | if this method called when animation running |

### setStartValue

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

```
public T setStartValue(float startValue)
```

Sets the start value of the animation. If start value is not set, the animation will get the current value for the view's property, and use that as the start value.

| Parameters |
|---|---|
| `float startValue` | start value for the animation |

| Returns |
|---|---|
| `T` | the Animation whose start value is being set |

### setStartVelocity

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

```
public T setStartVelocity(float startVelocity)
```

Start velocity of the animation. Default velocity is 0. Unit: change in property per second (e.g. pixels per second, scale/alpha value change per second).

Note when using a fixed value as the start velocity (as opposed to getting the velocity through touch events), it is recommended to define such a value in dp/second and convert it to pixel/second based on the density of the screen to achieve a consistent look across different screens.

To convert from dp/second to pixel/second:

```
float pixelPerSecond = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpPerSecond,
        getResources().getDisplayMetrics());
```

| Parameters |
|---|---|
| `float startVelocity` | start velocity of the animation |

| Returns |
|---|---|
| `T` | the Animation whose start velocity is being set |

### start

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

```
@MainThread
public void start()
```

Starts an animation. If the animation has already been started, no op. Note that calling `https://developer.android.com/reference/androidx/dynamicanimation/animation/DynamicAnimation#start()` will not immediately set the property value to start value of the animation. The property values will be changed at each animation pulse, which happens before the draw pass. As a result, the changes will be reflected in the next frame, the same as if the values were set immediately. This method should only be called on main thread. Unless a AnimationHandler is provided via setAnimationHandler, a default AnimationHandler is created on the same thread as the first call to start/cancel an animation. All the subsequent animation lifecycle manipulations need to be on that same thread, until the AnimationHandler is reset (using \[setAnimationHandler\]).

| Throws |
|---|---|
| `https://developer.android.com/reference/android/util/AndroidRuntimeException.html` | if this method is not called on the same thread as the animation handler |