PhoneTabSwitcherLayout.java 文件源码

/**
 * Starts a reveal animation to add a specific tab.
 *
 * @param tabItem
 *         The tab item, which corresponds to the tab, which should be added, as an instance of
 *         the class {@link TabItem}. The tab item may not be null
 * @param revealAnimation
 *         The reveal animation, which should be started, as an instance of the class {@link
 *         RevealAnimation}. The reveal animation may not be null
 */
private void animateReveal(@NonNull final TabItem tabItem,
                           @NonNull final RevealAnimation revealAnimation) {
    tabViewBottomMargin = -1;
    recyclerAdapter.clearCachedPreviews();
    dragHandler.setCallback(null);
    View view = tabItem.getView();
    ViewPropertyAnimator animation = view.animate();
    animation.setInterpolator(
            revealAnimation.getInterpolator() != null ? revealAnimation.getInterpolator() :
                    new AccelerateDecelerateInterpolator());
    animation.setListener(new AnimationListenerWrapper(createHideSwitcherAnimationListener()));
    animation.setStartDelay(0);
    animation.setDuration(revealAnimation.getDuration() != -1 ? revealAnimation.getDuration() :
            revealAnimationDuration);
    getArithmetics().animateScale(Axis.DRAGGING_AXIS, animation, 1);
    getArithmetics().animateScale(Axis.ORTHOGONAL_AXIS, animation, 1);
    animation.start();
    animateToolbarVisibility(getModel().areToolbarsShown() && getModel().isEmpty(), 0);
}