滚动时隐藏图像

Question

对于片段，我创建了一个要访问的自定义类，但现在我想使用eclipse隐藏图像而不是工具栏。

public Fragment getItem(int position) {
    switch (position) {
    case 0:
        fragmentManager = getActivity().getSupportFragmentManager();
    case 1:
        fragmentManager = getActivity().getSupportFragmentManager();
    case 2:
        fragmentManager = getActivity().getSupportFragmentManager();
        break;
    }

    SamplFragment defaultFragment = SamplFragment.newInstance(position, offerListData);
    return defaultFragment;
}