WindowAnimationFrameStats

Class Overview

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

[Expand] Inherited Constants
From class android.view.FrameStats long UNDEFINED_TIME_NANO Undefined time.
From interface android.os.Parcelable int CONTENTS_FILE_DESCRIPTOR Bit masks for use with describeContents(): each bit represents a kind of object considered to have potential special significance when marshalled. int PARCELABLE_WRITE_RETURN_VALUE Flag for use with writeToParcel(Parcel, int): 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)".

[Expand] Inherited Fields
From class android.view.FrameStats protected long[] mFramesPresentedTimeNano protected long mRefreshPeriodNano

[Expand] Inherited Methods
From class android.view.FrameStats final long getEndTimeNano() Gets the end time of the interval for which these statistics apply. final int getFrameCount() Gets the number of frames for which there is data. final long getFramePresentedTimeNano(int index) Get the time a frame at a given index was presented. final long getRefreshPeriodNano() Gets the refresh period of the display hosting the window(s) for which these statistics apply. final long getStartTimeNano() Gets the start time of the interval for which these statistics apply.
From class java.lang.Object Object clone() Creates and returns a copy of this Object. boolean equals(Object o) Compares this instance with the specified object and indicates if they are equal. void finalize() Invoked when the garbage collector has detected that this instance is no longer reachable. final Class<?> getClass() Returns the unique instance of Class that represents this object's class. int hashCode() Returns an integer hash code for this object. final void notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. final void notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. String toString() Returns a string containing a concise, human-readable description of this object. final void wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object. final void wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires. final void wait(long millis) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
From interface android.os.Parcelable abstract int describeContents() Describe the kinds of special objects contained in this Parcelable's marshalled representation. abstract void writeToParcel(Parcel dest, int flags) Flatten this object in to a Parcel.