Android 使用MergeAdapter和BaseAdapter

我已经使用过MergeAdapter，并且在ArrayAdapter中运行得非常好，但是当我使用

LazyAdapter extends BaseAdapter

时，它在Logcat上没有显示任何错误，模拟器也没有显示任何LazyAdapter内容

问题：

public class HomeFragment extends ListFragment{



    private static final String TAG = "URL";
    private MergeAdapter adapter = null;
    private ImageView [] imageView;
    private ViewFlipper flippy;
    private ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();
    private NoticiaAdapter nAdapter = null;
    // XML node keys
        static final String KEY_SONG = "news"; // parent node
        static final String KEY_ID = "id";
        static final String KEY_TITLE = "title";
        static final String KEY_TEXT = "text";
        static final String KEY_HOUR = "hour";
        static final String KEY_THUMB_URL = "thumb_url";

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onViewCreated(view, savedInstanceState);

        setRetainInstance(true);

        String[] Url = create();
        new MyAsyncTask(Url).execute();
        nAdapter = new NoticiaAdapter(getActivity(), newsList);
        adapter = new MergeAdapter();
        adapter.addView(buildlabel1());
        adapter.addAdapter(nAdapter);

        setListAdapter(adapter);
        //mergeadapter
    }

public class NoticiaAdapter extends BaseAdapter {   

    private FragmentActivity activity;
    private ArrayList<HashMap<String, String>> data;
    private static LayoutInflater inflater=null;
    public ImageLoader imageLoader; 
    ViewHolder holder = null;

    public final class ViewHolder {
        public TextView title;
        public TextView text;
        public TextView hour;
        public ImageView thumb_image;
        // public Button save_btn;

    }

     public NoticiaAdapter(FragmentActivity fragmentActivity, ArrayList<HashMap<String, String>> d) {
            super();
            this.activity = fragmentActivity;
            this.data = d;
            inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            imageLoader=new ImageLoader(activity.getApplicationContext());
        }

     public int getCount() {       
       return data.size();   
     }   


        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return data.get(position);
        }


     public long getItemId(int position) {       
      return position;   
     }   

     @Override
        public void notifyDataSetChanged() {
            super.notifyDataSetChanged();
        }

     public View getView(int position, View convertView, ViewGroup parent) {  
         View vi=convertView;
            if(convertView==null) 

                vi = inflater.inflate(R.layout.news_list_row, null);
            holder = new ViewHolder();
            holder.title = (TextView)vi.findViewById(R.id.txtTitle); // title
            holder.text = (TextView)vi.findViewById(R.id.txtDescription); // artist name
            holder.hour = (TextView)vi.findViewById(R.id.txtHour); // duration
            holder.thumb_image=(ImageView)vi.findViewById(R.id.img_news); // thumb image

            HashMap<String, String> news = new HashMap<String, String>();
            news = data.get(position);

            holder.title.setText(news.get(HomeFragment.KEY_TITLE));
            holder.text.setText(news.get(HomeFragment.KEY_TEXT));
            holder.hour.setText(news.get(HomeFragment.KEY_HOUR));
            imageLoader.DisplayImage(news.get(HomeFragment.KEY_THUMB_URL), holder.thumb_image);

      return vi;   
     }

     public void add(HashMap<String, String> map) {
            // TODO Auto-generated method stub
            data.add(map);
            notifyDataSetChanged();

        }


    }

那么可以使用BaseAdapter和MergeAdapter吗？ 如果不是，这是我的代码，我应该怎么做

列表片段：

public class HomeFragment extends ListFragment{



    private static final String TAG = "URL";
    private MergeAdapter adapter = null;
    private ImageView [] imageView;
    private ViewFlipper flippy;
    private ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();
    private NoticiaAdapter nAdapter = null;
    // XML node keys
        static final String KEY_SONG = "news"; // parent node
        static final String KEY_ID = "id";
        static final String KEY_TITLE = "title";
        static final String KEY_TEXT = "text";
        static final String KEY_HOUR = "hour";
        static final String KEY_THUMB_URL = "thumb_url";

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onViewCreated(view, savedInstanceState);

        setRetainInstance(true);

        String[] Url = create();
        new MyAsyncTask(Url).execute();
        nAdapter = new NoticiaAdapter(getActivity(), newsList);
        adapter = new MergeAdapter();
        adapter.addView(buildlabel1());
        adapter.addAdapter(nAdapter);

        setListAdapter(adapter);
        //mergeadapter
    }

public class NoticiaAdapter extends BaseAdapter {   

    private FragmentActivity activity;
    private ArrayList<HashMap<String, String>> data;
    private static LayoutInflater inflater=null;
    public ImageLoader imageLoader; 
    ViewHolder holder = null;

    public final class ViewHolder {
        public TextView title;
        public TextView text;
        public TextView hour;
        public ImageView thumb_image;
        // public Button save_btn;

    }

     public NoticiaAdapter(FragmentActivity fragmentActivity, ArrayList<HashMap<String, String>> d) {
            super();
            this.activity = fragmentActivity;
            this.data = d;
            inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            imageLoader=new ImageLoader(activity.getApplicationContext());
        }

     public int getCount() {       
       return data.size();   
     }   


        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return data.get(position);
        }


     public long getItemId(int position) {       
      return position;   
     }   

     @Override
        public void notifyDataSetChanged() {
            super.notifyDataSetChanged();
        }

     public View getView(int position, View convertView, ViewGroup parent) {  
         View vi=convertView;
            if(convertView==null) 

                vi = inflater.inflate(R.layout.news_list_row, null);
            holder = new ViewHolder();
            holder.title = (TextView)vi.findViewById(R.id.txtTitle); // title
            holder.text = (TextView)vi.findViewById(R.id.txtDescription); // artist name
            holder.hour = (TextView)vi.findViewById(R.id.txtHour); // duration
            holder.thumb_image=(ImageView)vi.findViewById(R.id.img_news); // thumb image

            HashMap<String, String> news = new HashMap<String, String>();
            news = data.get(position);

            holder.title.setText(news.get(HomeFragment.KEY_TITLE));
            holder.text.setText(news.get(HomeFragment.KEY_TEXT));
            holder.hour.setText(news.get(HomeFragment.KEY_HOUR));
            imageLoader.DisplayImage(news.get(HomeFragment.KEY_THUMB_URL), holder.thumb_image);

      return vi;   
     }

     public void add(HashMap<String, String> map) {
            // TODO Auto-generated method stub
            data.add(map);
            notifyDataSetChanged();

        }


    }

公共类HomeFragment扩展了ListFragment{
私有静态最终字符串TAG=“URL”；
私有MergeAdapter=null；
私有ImageView[]ImageView；
私家侦探Flipper flippy；
private ArrayList newsList=new ArrayList（）；
私有通知适配器nAdapter=null；
//XML节点密钥
静态最终字符串键\u SONG=“news”//父节点
静态最终字符串键\u ID=“ID”；
静态最终字符串键\u TITLE=“TITLE”；
静态最终字符串键\u TEXT=“TEXT”；
静态最终字符串键\u HOUR=“HOUR”；
静态最终字符串键\u THUMB\u URL=“THUMB\u URL”；
@凌驾
已创建视图上的公共void（视图，捆绑保存状态）{
//TODO自动生成的方法存根
super.onViewCreated（视图，savedInstanceState）；
setRetainInstance（真）；
字符串[]Url=create（）；
新建MyAsyncTask（Url）.execute（）；
nAdapter=newnotifiaadapter（getActivity（），newsList）；
adapter=新的MergeAdapter（）；
addView（buildlabel1（））；
adapter.addAdapter（nAdapter）；
setListAdapter（适配器）；
//合并适配器
}

懒散适配器：

public class HomeFragment extends ListFragment{



    private static final String TAG = "URL";
    private MergeAdapter adapter = null;
    private ImageView [] imageView;
    private ViewFlipper flippy;
    private ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();
    private NoticiaAdapter nAdapter = null;
    // XML node keys
        static final String KEY_SONG = "news"; // parent node
        static final String KEY_ID = "id";
        static final String KEY_TITLE = "title";
        static final String KEY_TEXT = "text";
        static final String KEY_HOUR = "hour";
        static final String KEY_THUMB_URL = "thumb_url";

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onViewCreated(view, savedInstanceState);

        setRetainInstance(true);

        String[] Url = create();
        new MyAsyncTask(Url).execute();
        nAdapter = new NoticiaAdapter(getActivity(), newsList);
        adapter = new MergeAdapter();
        adapter.addView(buildlabel1());
        adapter.addAdapter(nAdapter);

        setListAdapter(adapter);
        //mergeadapter
    }

public class NoticiaAdapter extends BaseAdapter {   

    private FragmentActivity activity;
    private ArrayList<HashMap<String, String>> data;
    private static LayoutInflater inflater=null;
    public ImageLoader imageLoader; 
    ViewHolder holder = null;

    public final class ViewHolder {
        public TextView title;
        public TextView text;
        public TextView hour;
        public ImageView thumb_image;
        // public Button save_btn;

    }

     public NoticiaAdapter(FragmentActivity fragmentActivity, ArrayList<HashMap<String, String>> d) {
            super();
            this.activity = fragmentActivity;
            this.data = d;
            inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            imageLoader=new ImageLoader(activity.getApplicationContext());
        }

     public int getCount() {       
       return data.size();   
     }   


        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return data.get(position);
        }


     public long getItemId(int position) {       
      return position;   
     }   

     @Override
        public void notifyDataSetChanged() {
            super.notifyDataSetChanged();
        }

     public View getView(int position, View convertView, ViewGroup parent) {  
         View vi=convertView;
            if(convertView==null) 

                vi = inflater.inflate(R.layout.news_list_row, null);
            holder = new ViewHolder();
            holder.title = (TextView)vi.findViewById(R.id.txtTitle); // title
            holder.text = (TextView)vi.findViewById(R.id.txtDescription); // artist name
            holder.hour = (TextView)vi.findViewById(R.id.txtHour); // duration
            holder.thumb_image=(ImageView)vi.findViewById(R.id.img_news); // thumb image

            HashMap<String, String> news = new HashMap<String, String>();
            news = data.get(position);

            holder.title.setText(news.get(HomeFragment.KEY_TITLE));
            holder.text.setText(news.get(HomeFragment.KEY_TEXT));
            holder.hour.setText(news.get(HomeFragment.KEY_HOUR));
            imageLoader.DisplayImage(news.get(HomeFragment.KEY_THUMB_URL), holder.thumb_image);

      return vi;   
     }

     public void add(HashMap<String, String> map) {
            // TODO Auto-generated method stub
            data.add(map);
            notifyDataSetChanged();

        }


    }

公共类NotifiaAdapter扩展了BaseAdapter{
私人碎片活动；
私有数组列表数据；
专用静态充气机=空；
公共图像加载器；
ViewHolder=null；
公共最终类视图持有者{
公共文本视图标题；
公共文本查看文本；
公共文本浏览时间；
公共图像查看大拇指图像；
//公共按钮保存；
}
公共通知适配器（FragmentActivity FragmentActivity，ArrayList d）{
超级（）；
this.activity=fragmentActivity；
这个数据=d；
充气器=（LayoutInflater）activity.getSystemService（Context.LAYOUT\u充气器\u SERVICE）；
imageLoader=新的imageLoader（activity.getApplicationContext（））；
}
public int getCount（）{
返回data.size（）；
}   
公共对象getItem（int位置）{
//TODO自动生成的方法存根
返回数据。获取（位置）；
}
公共长getItemId（int位置）{
返回位置；
}   
@凌驾
public void notifyDataSetChanged（）{
super.notifyDataSetChanged（）；
}
公共视图getView（int位置、视图转换视图、视图组父级）{
视图vi=转换视图；
if（convertView==null）
vi=充气机。充气（R.layout.news\u list\u行，空）；
holder=新的ViewHolder（）；
holder.title=（TextView）vi.findViewById（R.id.txtTitle）；//title
holder.text=（TextView）vi.findViewById（R.id.txtDescription）；//艺术家姓名
holder.hour=（TextView）vi.findViewById（R.id.txtHour）；//持续时间
holder.thumb_image=（ImageView）vi.findviewbyd（R.id.img_news）；//thumb image
HashMap news=新的HashMap（）；
新闻=数据。获取（位置）；
holder.title.setText（news.get（HomeFragment.KEY_title））；
holder.text.setText（news.get（HomeFragment.KEY_text））；
hour.setText（news.get（HomeFragment.KEY_hour））；
imageLoader.DisplayImage（news.get（HomeFragment.KEY\u THUMB\u URL）、holder.THUMB\u image）；
返回vi；
}
公共void添加（HashMap映射）{
//TODO自动生成的方法存根
数据。添加（地图）；
notifyDataSetChanged（）；
}
}

为了回答这个问题，我犯了一个错误，我的服务器中的xml文件拼写错误，所以是的，MergeAdapter与BaseAdapter一起工作

因此，这可能是希望使用的用户的示例代码

---

感谢Commonware的帮助。

暂时删除

合并适配器

，只需将

通知适配器

放入

列表片段

，看看它是否有效。如果无效，问题在于

通知适配器

。谢谢，@commonware我服务器中的xml文件拼写错误。有办法重新加载内容吗只在按下按钮后在“NotifiaAdapter”内？谢谢你解决这个问题请。。。