Added in API level 21
Deprecated in API level 34

WindowAnimationFrameStats

Kotlin |Java

class WindowAnimationFrameStats : FrameStats, Parcelable

kotlin.Any
↳	android.view.FrameStats
	↳	android.view.WindowAnimationFrameStats

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 getStartTimeNano() to 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 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 getFramePresentedTimeNano(int).

Summary

Inherited constants

From class Parcelable

Int

CONTENTS_FILE_DESCRIPTOR

Descriptor bit used with describeContents(): indicates that the Parcelable object's flattened representation includes a file descriptor.

Int

PARCELABLE_WRITE_RETURN_VALUE

Flag for use with writeToParcel: 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)". Some implementations may want to release resources at this point.

From class FrameStats

Long

UNDEFINED_TIME_NANO

Undefined time.

Public methods
Int	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
String	`toString()` Returns a string representation of the object.
Unit	`writeToParcel(parcel: Parcel, flags: Int)` Flatten this object in to a Parcel.

Inherited functions

From class FrameStats

`Long`	`getEndTimeNano()` Gets the end time of the interval for which these statistics apply. The end interval is the time when the last frame was presented.
`Int`	`getFrameCount()` Gets the number of frames for which there is data.
`Long`	`getFramePresentedTimeNano(index: Int)` Get the time a frame at a given index was presented.
`Long`	`getRefreshPeriodNano()` Gets the refresh period of the display hosting the window(s) for which these statistics apply.
`Long`	`getStartTimeNano()` Gets the start time of the interval for which these statistics apply. The start interval is the time when the first frame was presented.

Properties
static Parcelable.Creator<WindowAnimationFrameStats!>	`CREATOR`

Public methods

describeContents

Added in API level 21

fun describeContents(): Int

Deprecated: Deprecated in Java.

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 writeToParcel(android.os.Parcel,int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

Return
`Int`	a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

toString

Added in API level 21

fun toString(): String

Deprecated: Deprecated in Java.

Returns a string representation of the object.

Return
`String`	a string representation of the object.

writeToParcel

Added in API level 21

fun writeToParcel(
    parcel: Parcel, 
    flags: Int
): Unit

Deprecated: Deprecated in Java.

Flatten this object in to a Parcel.

Parameters
`dest`	The Parcel in which the object should be written. This value cannot be `null`.
`flags`	Int: Additional flags about how the object should be written. May be 0 or `PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of the following: `PARCELABLE_WRITE_RETURN_VALUE`

Properties

CREATOR

Added in API level 21

static val CREATOR: Parcelable.Creator<WindowAnimationFrameStats!>

Deprecated: Deprecated in Java.