Fragment隐藏与显示

public void JumpFragment(Fragment fragment, String tag) {FragmentManager manager = getSupportFragmentManager();FragmentTransaction action = manager.beginTransaction();// 判断mFragment是否被加载过if (!fragment.isAdded()) {action.add(R.id.frm_content, fragment);}// 判断currentFragment是否为null 不为null的时候 才进行隐藏if (currentFragment != null) {action.hide(currentFragment);}action.show(fragment);action.addToBackStack(tag);action.commit();currentFragment = fragment;}