AnimationFrameTimeHistogram.java 文件源码

@Override
public void onTimeUpdate(TimeAnimator animation, long totalTime, long deltaTime) {
    if (mFrameTimesCount == mFrameTimesMs.length) {
        mAnimator.end();
        cleanUp();
        Log.w(TAG, "Animation frame time recording reached the maximum number. It's either"
                + "the animation took too long or recording end is not called.");
        return;
    }

    // deltaTime is 0 for the first frame.
    if (deltaTime > 0) {
        mFrameTimesMs[mFrameTimesCount++] = deltaTime;
    }
}