ContextualSearchImageControl.java 文件源码

private void animateStaticImageVisibility(boolean visible) {
    // If the panel is expanded then #onUpdateFromPeekToExpand() is responsible for setting
    // mStaticImageVisibility and the static image appearance should not be animated.
    if (visible && mExpandedPercentage > 0.f) return;

    if (mStaticImageVisibilityInterpolator == null) {
        mStaticImageVisibilityInterpolator =
                PathInterpolatorCompat.create(0.4f, 0.f, 0.6f, 1.f);
    }

    mOverlayPanelAnimation.cancelAnimation(this, AnimationType.STATIC_IMAGE_VISIBILITY);

    float endValue = visible ? 1.f : 0.f;
    mOverlayPanelAnimation.addToAnimation(this, AnimationType.STATIC_IMAGE_VISIBILITY,
            mStaticImageVisibilityPercentage, endValue,
            OverlayPanelAnimation.BASE_ANIMATION_DURATION_MS, 0, false,
            mStaticImageVisibilityInterpolator);
}