java - 如何在fragment Activity 下填充自定义 ListView (扩展Fragment)

Question

我想在 Fragment Activity 下添加一些项目的简单 ListView ，该 Activity 扩展了 Fragment 但不是 ListFragment。

这是我的代码:

public class ProductListFragment extends Fragment {

String[] ibizzproducts=
        {
                "Attendance",
                "GPS",
                "CCTV"
                "Website"
                "Application"

        };

ListView listView;


public static ProductListFragment newInstance(int sectionNumber) {
    ProductListFragment fragment = new ProductListFragment();
    Bundle args = new Bundle();
    args.putInt(Constants.ARG_SECTION_NUMBER, sectionNumber);
    fragment.setArguments(args);
    return fragment;
}

public ProductListFragment() {
    // Required empty public constructor
}

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

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

     List<HashMap<String,String>> aList = new ArrayList<HashMap<String,String>>();

     for(int i=0;i < ibizzproducts.length;i++){
    HashMap<String, String> hm = new HashMap<String,String>();
    hm.put("txt", "Products Here : " + ibizzproducts[i]);

    aList.add(hm);
   }

   String[] from = { "Products Here" };

int[] to = { R.id.listView1};

View v = inflater.inflate(R.layout.fragment_product_list, container, false);

 // ListView list = (ListView)v.findViewById(R.id.listView1);

  listView = (ListView)v.findViewById(R.id.listView1);

   SimpleAdapter adapter = new SimpleAdapter(getActivity().getBaseContext(), aList, R.layout.fragment_product_list, from, to);

   listView.setAdapter(adapter);
    return v;

如果我在onCreateView()中使用它，那么它会给我错误:

java.lang.IllegalStateException: android.widget.ListView is not a  view that can be bounds by this SimpleAdapter

我只想添加简单的 ListView ，这样如果我从抽屉导航中选择 Product ，它应该向我显示这个简单的产品项目列表。

请帮我解决这个问题。谢谢

Answer 1

这里:

listView.setAdapter(adapter);

listView 对象为 null，因为 getActivity().findViewById 用于从 fragment_product_list 布局访问 ListView，其中是Fragment的布局。

因为ListView的list对象是从fragment_product_list初始化的，它是从onCreateView方法返回的，所以用它来setAdapter 对于 ListView:

list.setAdapter(adapter);