我想在我的的ListView 上一个项目创建一个文本菜单当用户敲击举行。然而，当我在我的项目挖掘握住我的code不显示任何东西。可能有人请检查我的code。谢谢你。

 公共类MYD扩展SherlockListFragment工具        ActionBar.TabListener {    私人档案文件;    私人列表＆LT;串GT; myList中;    私人片段mFragment;    私人的ListView DLListView;    私人ArrayAdapter＆LT;串GT; listAdapter;    @覆盖    公共无效onActivityCreated（捆绑savedInstanceState）{        super.onActivityCreated（savedInstanceState）;        getActivity（）的setContentView（R.layout.dl_listview）。        查看空= getActivity（）findViewById（R.id.empty）。        DLListView =（ListView控件）getActivity（）findViewById（R.id.DLListView）。        DLListView.setEmptyView（空）;        如果（！Environment.getExternalStorageState（）。等于（                Environment.MEDIA_MOUNTED））{            Toast.makeText（getActivity（），                    错误！未找到SD卡！                    Toast.LENGTH_LONG）.show（）;        }其他{            文件目录=新的文件（Environment.getExternalStorageDirectory（）                    +文件分割符+ST）;            directory.mkdirs（）;        }        DLListView =（ListView控件）getActivity（）findViewById（R.id.DLListView）。        myList中=新的ArrayList＆LT;串GT;（）;        文件SD卡= Environment.getExternalStorageDirectory（）;        文件=新的文件（sdCard.getAbsolutePath（）+/圣/）;        文件列表[] = file.listFiles（）;        的for（int i = 0; I＆LT; List.length的数字，我++）{            字符串文件名=列表[我] .getName（）;            文件名= fileName.replace（，名为txt）;            myList.add（文件名）;        }        listAdapter =新ArrayAdapter＆LT;串GT;（getActivity（）                R.layout.simplerow，myList中）;        DLListView.setAdapter（listAdapter）;        DLListView.setOnItemClickListener（新OnItemClickListener（）{            @覆盖            公共无效onItemClick（适配器视图＆LT;＆GT;母公司，观景，                    INT位置，长的id）{                // TODO自动生成方法存根                字符串textToPass = myList.get（位置）;                意图I =新意图（getActivity（），ViewActivity.class）;                textToPass = textToPass.replace（textToPass +，textToPass                        +符.txt）;                i.putExtra（textToPass，textToPass）;                startActivity（ⅰ）;            }        }）;    DLListView.setOnItemLongClickListener（新OnItemLongClickListener（）{    @覆盖    公共布尔onItemLongClick（适配器视图＆LT;＆GT;母公司，观景，            INT位置，长的id）{        // TODO自动生成方法存根        返回false;    }}）;}    公共无效onCreateContextMenu（文本菜单菜单视图V，ContextMenuInfo menuInfo）    {       super.onCreateContextMenu（菜单，V，menuInfo）;       AdapterContextMenuInfo信息=（AdapterContextMenuInfo）menuInfo;       字符串名称=（（的TextView）info.targetView）.getText（）的toString（）。       menu.setHeaderTitle（名）;       menu.add（0，v.getId（），0，播放）;       menu.add（0，v.getId（），1，删除）;    } 

解决方案

试试这个：

  DLListView.setOnItemLongClickListener（新OnItemLongClickListener（）{    @覆盖    公共布尔onItemLongClick（适配器视图＆LT;＆GT;母公司，观景，            INT位置，长的id）{        // TODO自动生成方法存根          registerForContextMenu（视图）;          openContextMenu（视图）;        返回false;    }}）; 

甚至可以使用 closeContextMenu（）如果您要关闭。希望这可以帮助。

I'm trying to create a ContextMenu when user tap hold on an item in my ListView. However my code doesn't show anything when I tap hold on my item. Could somebody please check on my code. Thank you.

public class MyD extends SherlockListFragment implements
        ActionBar.TabListener {

    private File file;
    private List<String> myList;

    private Fragment mFragment;

    private ListView DLListView;
    private ArrayAdapter<String> listAdapter;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        getActivity().setContentView(R.layout.dl_listview);

        View empty = getActivity().findViewById(R.id.empty);
        DLListView = (ListView) getActivity().findViewById(R.id.DLListView);
        DLListView.setEmptyView(empty);

        if (!Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            Toast.makeText(getActivity(),
                    "Error! No SDCARD Found!",
                    Toast.LENGTH_LONG).show();
        } else {
            File directory = new File(Environment.getExternalStorageDirectory()
                    + File.separator + "St");
            directory.mkdirs();
        }
        DLListView = (ListView) getActivity().findViewById(R.id.DLListView);

        myList = new ArrayList<String>();

        File sdCard = Environment.getExternalStorageDirectory();
        file = new File(sdCard.getAbsolutePath() + "/St/");

        File list[] = file.listFiles();

        for (int i = 0; i < list.length; i++) {
            String fileName = list[i].getName();
            fileName = fileName.replace(".txt", "");
            myList.add(fileName);

        }

        listAdapter = new ArrayAdapter<String>(getActivity(),
                R.layout.simplerow, myList);

        DLListView.setAdapter(listAdapter);

        DLListView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                String textToPass = myList.get(position);
                Intent i = new Intent(getActivity(), ViewActivity.class);
                textToPass = textToPass.replace(textToPass + "", textToPass
                        + ".txt");
                i.putExtra("textToPass", textToPass);
                startActivity(i);
            }
        });

    DLListView.setOnItemLongClickListener(new OnItemLongClickListener() {

    @Override
    public boolean onItemLongClick(AdapterView<?> parent, View view,
            int position, long id) {
        // TODO Auto-generated method stub
        return false;
    }
});

}

    public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo)
    {
       super.onCreateContextMenu(menu, v, menuInfo);
       AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
       String name = ((TextView) info.targetView).getText().toString();
       menu.setHeaderTitle(name);      
       menu.add(0,v.getId(), 0, "Play");    
       menu.add(0,v.getId(),1,"Delete"); 
    }

Try this:

DLListView.setOnItemLongClickListener(new OnItemLongClickListener() {

    @Override
    public boolean onItemLongClick(AdapterView<?> parent, View view,
            int position, long id) {
        // TODO Auto-generated method stub

          registerForContextMenu( view );
          openContextMenu( view );        

        return false;
    }
});

Even you can use closeContextMenu() if you want to close. Hope this helps.