@Override
    public void showMedia(List<BaseMedia> medias, int count) {
        if (medias == null || isEmptyData(medias)
                && isEmptyData(mMediaAdapter.getAllMedias())) {
            showEmptyData();
            return;
        }
        showData();
        mMediaAdapter.addAllData(medias);
    }
the most easy to implement {@link PickerContract.View} to show medias with google's Bottom Sheet </br>
for simplest purpose, it only support SINGLE_IMG and VIDEO Mode.
for MULTI_IMG mode, use {@link BoxingViewFragment} instead.

@author ChenSL
boxing-impl/src/main/java/com/bilibili/boxing_impl/ui/BoxingBottomSheetFragment.java