Android контекстное меню для ListView в PagerAdapter

Question

У меня есть следующий класс:

public class ChannelsListTabsFragment extends Fragment { 

    private SlidingTabLayout mSlidingTabLayout; 
    private ViewPager mViewPager; 
    public ListChannelsPagerAdapter listChannelsPagerAdapter; 
    private ChannelCountriesModel[] tabTitles; 
    private Context applicationContext; 
    private String session; 
    private long time_offset; 
    private ListView listViewFragment; 

    public static ChannelsListTabsFragment newInstance(String session, ChannelCountriesModel[] tabTitles, long time_offset) { 
     ChannelsListTabsFragment fragment = new ChannelsListTabsFragment(); 
     Bundle args = new Bundle(); 
     args.putParcelableArray("tabTitles", tabTitles); 
     args.putString("session", session); 
     args.putLong("time_offset", time_offset); 
     fragment.setArguments(args); 
     return fragment; 
    } 

    public ChannelsListTabsFragment() {} 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.fragment_tabbet, container, false); 
     System.out.println("onCreateView"); 
     applicationContext = getActivity().getApplicationContext(); 
     tabTitles = (ChannelCountriesModel[]) getArguments().getParcelableArray("tabTitles"); 
     session = getArguments().getString("session"); 
     time_offset = getArguments().getLong("time_offset"); 

     return inflater.inflate(R.layout.channels_list_tabs_fragment, container, false); 
    } 

    @Override 
    public void onViewCreated(View view, Bundle savedInstanceState) { 
     mViewPager = (ViewPager) view.findViewById(R.id.viewpager); 
     listChannelsPagerAdapter = new ListChannelsPagerAdapter(session, tabTitles); 
     mViewPager.setAdapter(listChannelsPagerAdapter); 

     mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs); 

     mSlidingTabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() { 
      @Override 
      public int getIndicatorColor(int position) { 
       return getResources().getColor(R.color.myred); 
      } 

      @Override 
      public int getDividerColor(int position) { 
       return getResources().getColor(R.color.myred); 
      } 
     }); 

     mSlidingTabLayout.setViewPager(mViewPager); 
    } 

    @Override 
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { 
     if (v.getId()==R.id.channelList) { 
      AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)menuInfo; 
      Object o = listViewFragment.getItemAtPosition(info.position); 
      Channel_Model channelModel = (Channel_Model) o; 
      menu.setHeaderTitle(channelModel.getCh_Name()); 
      String[] menuItems = getResources().getStringArray(R.array.menu); 
      for (int i = 0; i<menuItems.length; i++) { 
       menu.add(Menu.NONE, i, i, menuItems[i]); 
      } 
     } 
    } 

    @Override 
    public boolean onContextItemSelected(MenuItem item) { 
     if (getUserVisibleHint()) { 
      AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo(); 
      int menuItemIndex = item.getItemId(); 
      Object o = listViewFragment.getItemAtPosition(info.position); 
      Channel_Model channelModel = (Channel_Model) o; 

      switch (menuItemIndex) { 
       // Přehrát program 
       case 0: 
        Intent Play_Channel=new Intent(applicationContext,Play_Channel.class); 
        Play_Channel.putExtra("channelModel", channelModel); 
        Play_Channel.putExtra("epgModel", channelModel.getEpg_Model_Now()); 
        Play_Channel.putExtra("session", session); 
        Play_Channel.putExtra("from_beginning", false); 
        Play_Channel.putExtra("time_offset", time_offset); 
        //Play_Channel.putExtra("channelListFragment", channelListFragment); 
        Play_Channel.putExtra("position", info.position); 
        startActivityForResult(Play_Channel, 110); 
        break; 
       // Přehrát program od začátku 
       case 1: 
        Intent Play_Channel_From_Beginning=new Intent(applicationContext,Play_Channel.class); 
        Play_Channel_From_Beginning.putExtra("channelModel", channelModel); 
        Play_Channel_From_Beginning.putExtra("epgModel", channelModel.getEpg_Model_Now()); 
        Play_Channel_From_Beginning.putExtra("session", session); 
        Play_Channel_From_Beginning.putExtra("from_beginning", true); 
        Play_Channel_From_Beginning.putExtra("time_offset", time_offset); 
        //Play_Channel.putExtra("channelListFragment", channelListFragment); 
        Play_Channel_From_Beginning.putExtra("position", info.position); 
        startActivityForResult(Play_Channel_From_Beginning, 110); 
        break; 
       // Archiv 
       case 2: 
        Intent ListArchive = new Intent(applicationContext, ListArchive.class); 
        ListArchive.putExtra("channelModel", channelModel); 
        ListArchive.putExtra("session", session); 
        startActivityForResult(ListArchive, 120); 
        break; 
       // Zpět 
       case 3 : 
        break; 
      } 
      return true; 
     } 
     return false; 
    } 

    class ListChannelsPagerAdapter extends PagerAdapter { 
     private ChannelCountriesModel[] tabTitles; 
     private String session; 
     private ListView listViewInAdapter; 

     public ListChannelsPagerAdapter(String session, ChannelCountriesModel[] tabTitles) { 
      this.tabTitles = tabTitles; 
      this.session = session; 
     } 

     @Override 
     public int getCount() { 
      try { 
       return tabTitles.length; 
      } 
      catch (Exception e) { 
       //e.printStackTrace(); 
       return 0; 
      } 
     } 

     @Override 
     public boolean isViewFromObject(View view, Object o) { 
      return o == view; 
     } 

     @Override 
     public CharSequence getPageTitle(int position) { 
      return tabTitles[position].getName(); 
     } 

     @Override 
     public Object instantiateItem(ViewGroup container, int position) { 
      View rootView = getActivity().getLayoutInflater().inflate(R.layout.channels_list_tabs_pager_item, container, false); 
      container.addView(rootView); 

      listViewInAdapter = (ListView) rootView.findViewById(R.id.channelList); 
      listViewInAdapter.requestFocus(); 

      Channel_Row_Adapter channel_Row_Adapter = new Channel_Row_Adapter(listViewInAdapter.getContext(), ((ChannelsListTabs)getActivity()).channelsCountriesMap.get(tabTitles[position].getShortcut()), session); 
      listViewInAdapter.setAdapter(channel_Row_Adapter); 
      registerForContextMenu(listViewInAdapter); 

      listViewInAdapter.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

       @Override 
       public void onItemClick(AdapterView<?> a, View v, int position, long id) { 
        try { 
         listViewFragment = listViewInAdapter; 
         getActivity().openContextMenu(v); 
        } catch (Exception e) {} 
       } 
      }); 
      return rootView; 
     } 

     @Override 
     public void destroyItem(ViewGroup container, int position, Object object) { 
      container.removeView((View) object); 
     } 
    } 
} 

Все выглядит хорошо, но только пока я хочу использовать контекстное меню - это открыто последний созданный ListView, а не на фактической странице.

Как я могу это сделать?

Answer 1

Я использую ListView в PagerAdapter и получил ту же проблему, что и вы.

Наконец-то выяснилось, что я использовал ArrayList как глобальную переменную, когда я пытался использовать этот ArrayList для передачи данных в адаптер ListView. Поэтому, когда программа переходит к instantiateItem(), она будет использовать тот же ArrayList.

Возможно, это поможет вам разобраться в этом.