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我正在使用片段代替选项卡，在上面我正在显示一个列表视图，如果我单击特定列表列，则由于启动了新活动而启动了一个新的 fragmentActivity 选项卡（片段）消失了，但我想要选项卡（片段）也应该保留在新屏幕中，我该怎么办..

活动代码如下。

公共类 FriendsFragment 扩展 ListFragment{

public static String[] friendsaddoptions=new String[]{
    "Fox User","FaceBook","Email","Twiter","SMS"
};


ListView listview;
Friends_Names_List_Adapter friendsnameslistadapter;
JSONArray dataJsonObject;
Button add;
Button back;


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View view=inflater.inflate(R.layout.friends_list, container,false);
    listview=(ListView)view.findViewById(android.R.id.list);
    add=(Button) view.findViewById(R.id.button_add);

    back=(Button)view. findViewById(R.id.button_back);
    back.setVisibility(View.INVISIBLE);
    FriendsFragmentData dataobserver=new FriendsFragmentData();
    ServerManager.getInstance().addObserver(dataobserver);
    ServerManager.getInstance().readLoopForFriends_Names_List(AppConstances.Friends_Names_List);

    if(friendsnameslistadapter==null)
        friendsnameslistadapter=new Friends_Names_List_Adapter(getActivity(), new JSONArray());
    listview.setAdapter(friendsnameslistadapter);

    add.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {       /*Intent in=new Intent(getActivity().getBaseContext(), FriendsNamesAddActivity.class);
            startActivity(in);*/
            ArrayAdapter< String> adapter=new ArrayAdapter<String>(getActivity().getBaseContext(), R.layout.friends_add_listitem,R.id.friends_add_option,friendsaddoptions);
            listview.setAdapter(adapter);
            if(adapter!=null)
                back.setVisibility(View.VISIBLE);

            listview.setOnItemClickListener(new OnItemClickListener() {

                @Override
                public void onItemClick(AdapterView<?> arg0, View view, int position,
                        long id) {
                    Intent intent=new Intent(getActivity().getBaseContext(),FoxUserActivity.class);    
                    startActivity(intent);

                }
            });


            if(adapter!=null)
            {
                add.setVisibility(View.INVISIBLE);

            }

        }

    });

如何将 FragmentActivity 作为屏幕的一部分启动，以便每个活动都可以看到选项卡（片段）。

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0 回答 0