Added in [API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)   
Deprecated in [API level
34](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Inherited Constants](https://developer.android.com/reference/android/view/WindowAnimationFrameStats#inhconstants) \| [Fields](https://developer.android.com/reference/android/view/WindowAnimationFrameStats#lfields) \| [Methods](https://developer.android.com/reference/android/view/WindowAnimationFrameStats#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/view/WindowAnimationFrameStats#inhmethods)

# WindowAnimationFrameStats

*** ** * ** ***


`
public

final

class
WindowAnimationFrameStats
`


`


`

`

extends https://developer.android.com/reference/android/view/FrameStats


`

`


implements

https://developer.android.com/reference/android/os/Parcelable


`

|---|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) |||
| ↳ | [android.view.FrameStats](https://developer.android.com/reference/android/view/FrameStats) ||
|   | ↳ | android.view.WindowAnimationFrameStats |

<br />

*** ** * ** ***


**This class was deprecated
in API level 34.**   

Use Shared
[FrameTimeline](https://perfetto.dev/docs/data-sources/frametimeline)
jank metrics instead.

This class contains window animation frame statistics. For example, a window
animation is usually performed when the application is transitioning from one
activity to another. The frame statistics are a snapshot for the time interval
from `https://developer.android.com/reference/android/view/FrameStats#getStartTimeNano()` to `https://developer.android.com/reference/android/view/FrameStats#getEndTimeNano()`.


The key idea is that in order to provide a smooth user experience the system should
run window animations at a specific time interval obtained by calling `https://developer.android.com/reference/android/view/FrameStats#getRefreshPeriodNano()`. If the system does not render a frame every refresh
period the user will see irregular window transitions. The time when the frame was
actually presented on the display by calling `https://developer.android.com/reference/android/view/FrameStats#getFramePresentedTimeNano(int)`.

## Summary

| ### Inherited constants |
|---|
| From class `https://developer.android.com/reference/android/view/FrameStats` |---|---| | `long` | `https://developer.android.com/reference/android/view/FrameStats#UNDEFINED_TIME_NANO` Undefined time. | |
| From interface `https://developer.android.com/reference/android/os/Parcelable` |---|---| | `int` | `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `https://developer.android.com/reference/android/os/Parcelable#describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor. | | `int` | `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`". | |

| ### Fields ||
|---|---|
| ` public static final https://developer.android.com/reference/android/os/Parcelable.Creator<https://developer.android.com/reference/android/view/WindowAnimationFrameStats>` | `https://developer.android.com/reference/android/view/WindowAnimationFrameStats#CREATOR` |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/view/WindowAnimationFrameStats#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/view/WindowAnimationFrameStats#toString()() ` Returns a string representation of the object. |
| ` void` | ` https://developer.android.com/reference/android/view/WindowAnimationFrameStats#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel parcel, int flags) ` Flatten this object in to a Parcel. |

| ### Inherited methods |
|---|---|
| From class ` https://developer.android.com/reference/android/view/FrameStats ` |---|---| | ` final long` | ` https://developer.android.com/reference/android/view/FrameStats#getEndTimeNano()() ` Gets the end time of the interval for which these statistics apply. | | ` final int` | ` https://developer.android.com/reference/android/view/FrameStats#getFrameCount()() ` Gets the number of frames for which there is data. | | ` final long` | ` https://developer.android.com/reference/android/view/FrameStats#getFramePresentedTimeNano(int)(int index) ` Get the time a frame at a given index was presented. | | ` final long` | ` https://developer.android.com/reference/android/view/FrameStats#getRefreshPeriodNano()() ` Gets the refresh period of the display hosting the window(s) for which these statistics apply. | | ` final long` | ` https://developer.android.com/reference/android/view/FrameStats#getStartTimeNano()() ` Gets the start time of the interval for which these statistics apply. | ||
| From class ` https://developer.android.com/reference/java/lang/Object ` |---|---| | ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/lang/Object#clone()() ` Creates and returns a copy of this object. | | ` boolean` | ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` https://developer.android.com/reference/java/lang/Object#finalize()() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final https://developer.android.com/reference/java/lang/Class<?>` | ` https://developer.android.com/reference/java/lang/Object#getClass()() ` Returns the runtime class of this `Object`. | | ` int` | ` https://developer.android.com/reference/java/lang/Object#hashCode()() ` Returns a hash code value for the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notify()() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notifyAll()() ` Wakes up all threads that are waiting on this object's monitor. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Object#toString()() ` Returns a string representation of the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(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` | ` https://developer.android.com/reference/java/lang/Object#wait(long)(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` | ` https://developer.android.com/reference/java/lang/Object#wait()() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||
| From interface ` https://developer.android.com/reference/android/os/Parcelable ` |---|---| | ` abstract int` | ` https://developer.android.com/reference/android/os/Parcelable#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. | | ` abstract void` | ` https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags) ` Flatten this object in to a Parcel. | ||

## Fields

### CREATOR

Added in [API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static final Creator<WindowAnimationFrameStats> CREATOR
```

<br />

<br />

## Public methods

### describeContents

Added in [API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int describeContents ()
```

Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`,
the return value of this method must include the
`https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` bit.

<br />

| Returns ||
|---|---|
| `int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or - `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` |

### toString

Added in [API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public String toString ()
```

Returns a string representation of the object.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | a string representation of the object. <br /> |

### writeToParcel

Added in [API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void writeToParcel (Parcel parcel, 
                int flags)
```

Flatten this object in to a Parcel.

<br />

| Parameters ||
|---|---|
| `parcel` | `Parcel`: The Parcel in which the object should be written. This value cannot be `null`. <br /> |
| `flags` | `int`: Additional flags about how the object should be written. May be 0 or `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of the following: - `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` |