java - 无法解析方法 setListAdapter

Question

我尝试在 fragment 中显示 listView。但是方法 setListAdapter - 没有解决。我认为，我必须获取 listView 的 id (android.R.id.list)；然后:lv.setAdapter(mAdapter)；但它也不起作用。

public class MyEmployeeFragment extends Fragment {

    private CustomAdapter sAdapter;
    private List<User> userList;
    ProgressDialog mProgressDialog;



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

        setHasOptionsMenu(true);
        userList = new ArrayList<User>();
        sAdapter = new CustomAdapter(getActivity(),userList);
        setListAdapter(sAdapter);
        new CustomAsync().execute();

    }

    private class CustomAdapter extends ArrayAdapter<User> {
        private LayoutInflater inflater;

        public CustomAdapter(Context context, List<User> objects) {
            super(context, 0, objects);
            inflater = LayoutInflater.from(context);
        }

        class ViewHolder {
            TextView id;
            TextView name;
            TextView lastName;
        }


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            ViewHolder vH;
            if (convertView == null) {
                convertView = inflater.inflate(R.layout.list_item_employee, null);
                vH = new ViewHolder();
                vH.id = (TextView) convertView.findViewById(R.id.tv_employee_id);
                vH.name = (TextView) convertView.findViewById(R.id.tv_employee_name);
                vH.lastName = (TextView) convertView.findViewById(R.id.tv_employee_last_name);
                convertView.setTag(vH);
            } else
                vH = (ViewHolder) convertView.getTag();


            final User user = getItem(position);
            vH.id.setText(user.getId());
            vH.name.setText(user.getName());
            vH.lastName.setText(user.getLastName());


            return convertView;
        }
    }

    private class CustomAsync extends AsyncTask<Void,Void,List<User>>
    {}
}

XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:divider="#B7B7B7"

        />

    <ProgressBar
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/progressBar2"
        android:layout_gravity="center_vertical"
        android:layout_weight="1"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />

    <TextView
        android:id="@id/android:empty"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="@string/empty"
        android:layout_above="@+id/progressBar2"
        android:layout_alignRight="@+id/progressBar2"
        android:layout_alignEnd="@+id/progressBar2"
        android:layout_marginBottom="83dp">
    </TextView>

</RelativeLayout>

Answer 1

setListAdapter是 ListFragment 的一种方法当你的 fragment 延伸 Fragment .

http://developer.android.com/reference/android/app/ListFragment.html#setListAdapter(android.widget.ListAdapter)

所以你要么扩展ListFragment

或

扩展Fragment使用 ListView 为布局充气, 初始化 ListView在onCreateView的 Fragment然后使用 listView.setAdapter(adapter) .

如果你想扩展 Fragment

 <ListView
    android:id="@+id/list"

然后

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

View rootView = inflater.inflate(R.layout.yourxml, container, false);

ListView lv = (ListView)rootView.findViewById(R.id.list);
lv.setAdapter(youradapter);

return rootView;
}