@NonNull
    @Override
    public AbsBoxingViewFragment onCreateBoxingView(ArrayList<BaseMedia> medias) {
        mPickerFragment = (BoxingViewFragment) getSupportFragmentManager().findFragmentByTag(BoxingViewFragment.TAG);
        if (mPickerFragment == null) {
            mPickerFragment = (BoxingViewFragment) BoxingViewFragment.newInstance().setSelectedBundle(medias);
            getSupportFragmentManager().beginTransaction().replace(R.id.content_layout, mPickerFragment, BoxingViewFragment.TAG).commit();
        }
        return mPickerFragment;
    }
Default UI Activity for simplest usage.
A simple subclass of {@link AbsBoxingActivity}. Holding a {@link AbsBoxingViewFragment} to display medias.
boxing-impl/src/main/java/com/bilibili/boxing_impl/ui/BoxingActivity.java