0

我创建了一个管理 4 个选项卡的 Tab FragmentActivity 类。

选项卡一包含一个包装片段作为父级：

1）A ListFragment（显示类别） - 当单击列表中的项目时，通过在包装片段中调用 list.setOnItemClickListener(new OnItemClickListener() 并使用以下方法在同一选项卡中显示项目的子列表（下面的#2）：

getChildFragmentManager()
      .beginTransaction()
      .replace(R.id.container, details)
      .addToBackStack(null)
      .commit();

单击第一个列表并显示第二个列表没有问题，效果很好。单击第二个列表以显示详细信息……这就是我遇到问题的地方。

2）列表片段（显示子列表） -我正在尝试在包装器中实现第二个 setOnItemClickListener 以侦听对此子列表的点击。我不知道如何实现这一点。

3）一个片段（显示上面2中选择的项目的详细信息）

public class CategoryListWrapperFragment extends Fragment {
public static final String EXTRA_ITEM_ID_STRING = "com.f.lite.item_selected_from_list_id";

private String mPassId;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    DealListFragment deallist = new DealListFragment();

    deallist.setOnItemClickListener(new OnItemClickListener() {
        @Override 
        public void onItemClick(AdapterView<?> l, View v, int position, long id) {  
            Log.d("Wrapper", "Inside deallist on click listner");
            Bundle args = new Bundle();
            args.putString(EXTRA_ITEM_ID_STRING, mPassId);           

                // Create details fragment based on clicked item's position
                DealFragment details = new DealFragment();
                details.setArguments(args);

                getChildFragmentManager()
                  .beginTransaction()
                  .replace(R.id.container, details)
                  .addToBackStack(null)
                  .commit();
        }
    });      


    CategoryListFragment list = new CategoryListFragment();

    list.setOnItemClickListener(new OnItemClickListener() {
        @Override 
        public void onItemClick(AdapterView<?> l, View v, int position, long id) {  

            Bundle args = new Bundle();
            args.putString(EXTRA_ITEM_ID_STRING, mPassId);           

                    DListFragment sublist = new DListFragment();
                sublist.setArguments(args);

                getChildFragmentManager()
                  .beginTransaction()
                  .replace(R.id.container, sublist)
                  .addToBackStack(null)
                  .commit();
        }
    });
    getChildFragmentManager()
    .beginTransaction()
    .add(R.id.container, list)
    .commit();   
}

public void setPassId(String passIn) {
    mPassId = passIn;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // There has to be a view with id `container` inside `wrapper.xml`
    return inflater.inflate(R.layout.wrapper, container, false);
}
}

enter code here
public class CategoryListFragment extends ListFragment {

private OnItemClickListener listener;
private ArrayList<Category> mCategory;
ImageView mCategoryImageView;

@Override
public void onAttach (Activity activity) {
    super.onAttach(activity);

}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getActivity().setTitle(R.string.category_title);
    mCategory = CategoryLab.get(getActivity()).getCategory();   

    CategoryAdapter adapter = new CategoryAdapter(mCategory);
    setListAdapter(adapter);

}   

@Override
public void onListItemClick(ListView l, View v, int position, long id) {

    Category c = ((CategoryAdapter)getListAdapter()).getItem(position);        

    CategoryListWrapperFragment parent = (CategoryListWrapperFragment)getParentFragment();
    parent.setPassId(c.getmCategory());

    if(listener != null) {
        listener.onItemClick(l, v, position, id);
      }

}

public void setOnItemClickListener(OnItemClickListener l) {
    this.listener = l;
}

……

公共类 DListFragment 扩展 ListFragment {

private ArrayList<Deal> mDeals;

private OnItemClickListener listener;
private String mCategoryID;



@Override
public void onAttach (Activity activity) {
    super.onAttach(activity);

}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);         

    mCategoryID = (String)getArguments().getString(CategoryListWrapperFragment.EXTRA_ITEM_ID_STRING);
    mDeals = DealLab.get(getActivity()).getDeals(mCategoryID);      

    getActivity().setTitle(mCategoryID);

    DealAdapter adapter = new DealAdapter(mDeals);
    setListAdapter(adapter);
}

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    Deal d = ((DealAdapter)getListAdapter()).getItem(position);

    CategoryListWrapperFragment parent = (CategoryListWrapperFragment)getParentFragment();
    parent.setPassId(Long.toString(d.getmId()));

    if(listener != null) {
        listener.onItemClick(l, v, position, id);
      }

}

@Override
public void onResume() {
    super.onResume();
    mDeals = DealLab.get(getActivity()).getDeals(mCategoryID);          

    DealAdapter adapter = new DealAdapter(mDeals);
    setListAdapter(adapter);        
}

public void setOnItemClickListener(OnItemClickListener l) {
    this.listener = l;
}

} ......

4

1 回答 1

0

我确信这不是最好的解决方案，但它确实有效。我在包装器中创建了一个函数来设置第二个 onListItemClick 侦听器，然后从子片段 onCreate 调用该函数。它工作正常，但可能有一种更清洁的方法来做到这一点。

于 2013-09-29T02:31:26.463 回答