fragment、ListFragment使用ListView及自定义Listview等初始化操作

fragment、ListFragment使用ListView及自定义Listview等初始化操作

1.先说一下 从官方api中说fragment碎片中使用Listview有专门的 ListView碎片-> ListFragment 而不能继承Fragment

 官方api相关连接：http://developer.android.com/guide/components/fragments.html

2.不废话直接上代码，这是我项目种的代码 2.1版本同样适用

父类封装：

public class BaseListFragment extends ListFragment {
    public Map<String, String> map;
    public String tag = this.getClass().getSimpleName(); // tag 用于测试log用
    public Context context; // 存储上下文对象
    public Activity activity; // 存储上下文对象
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        context = getActivity();
        activity = getActivity();
    }
}

子类实现：

/**
 * 新闻分类页面
 * @author chen
 * @date 2012-12-18 下午5:48:02
 */
public class NewsFragment extends BaseListFragment {
    /** 请求url */
    private String url;
    /** ListView */
    private PullListView mListView;
//    /** 分页 */
//    private Page page = new Page();
    /** 商铺适配器 */
    private Adapter mAdapter = new Adapter(activity);;
    /** 集合数据 */
    public ArrayList<News> mListData;
    /** 是否重新加载 */
    private boolean isClear;
    
    private LayoutInflater mInflater;
    /** 新闻详细页面 url */
    private String detailUrl = C.http.http_news_detail;
    
    public NewsFragment(){}
    public NewsFragment(Context context, String url) {
        this.context = context;
        this.url = url;
        mListData = null;
    }
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.i(tag, "onCreate");
    }
    
    // 加载多次
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Log.i(tag, "onActivityCreated");
        mListView = (PullListView) getListView();//(ListView) activity.findViewById(android.R.id.list);
        if(mListData != null && mListData.size() > 0) {
            return;
        }
        
        mListData = new ArrayList<News>();
        setListAdapter(mAdapter);
        mListView.onRefreshComplete();
        mListView.setonRefreshListener(new OnRefreshListener() {
            public void onRefresh() {
                isClear = true;
                // 初始化数据
                AnsynHttpRequest.requestByGet(context, callbackData, R.string.http_news, url, true, true, true);
            }
        });
        // 初始化数据
        AnsynHttpRequest.requestByGet(context, callbackData, R.string.http_news, url, true, true, false);
    }

    // 加载多次
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = inflater.inflate(R.layout.fragment_news_or_hotline, container, false);
        mInflater = inflater;
        Log.i(tag, "onCreateView");
        return view;
    }
    @Override
    public void onStart() {
        Log.i(tag, "onStart");
        super.onStart();
    }
    @Override
    public void onStop() {
        super.onStop();
        Log.i(tag, "onStop");
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(tag, "onDestroy");
    }
    
    /**
     * 异步回调回来并处理数据
     */
    private ObserverCallBack callbackData = new ObserverCallBack(){
        public void back(String data, int url) {
            Message msg = new Message();
            switch (url) {
            case R.string.http_news: // 解析主题信息数据
                msg = new Message();
                if(data == null) {
                    msg.what = 2;
                    mHandler.sendMessage(msg);
                    return;
                }
                try {
                    News news = new News();
                    ArrayList<News> dataInfo = news.getListInfo(data);
                    if(isClear) {
                        if(dataInfo != null && dataInfo.size()>0) mListData.clear();
                        isClear = false;
                    }
                    
                    if(mListData != null && mListData.size() > 0)
                        msg.what = 1;
                    else
                        msg.what = 0;
                    if(dataInfo == null || dataInfo.size() == 0){
                        if( mListData != null && mListData.size() > 0){
                            msg = new Message();
                            msg.what = 2;
                            mHandler.sendMessage(msg);
                            return;
                        }
                    } else {
                        mListData.addAll(dataInfo);
                    }
                    mHandler.sendMessage(msg);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                
                break;
            case R.string.http_news_detail:
                msg = new Message();
                if(data == null) {
                    msg.what = 2;
                    mHandler.sendMessage(msg);
                    return;
                }
                try {
                    NewsDetail newsDetail = new NewsDetail();
                    newsDetail = newsDetail.getInfo(data, detailUrl);
                    msg.what = 3;
                    msg.obj = newsDetail;
                    if(newsDetail.content == null || newsDetail.content.length() == 0){
                        msg = new Message();
                        msg.what = 2;
                        mHandler.sendMessage(msg);
                        return;
                    }
                    mHandler.sendMessage(msg);
                } catch (Exception e) {
                    msg = new Message();
                    msg.what = 2;
                    mHandler.sendMessage(msg);
                }
                break;
            default:
                break;
            }
        };
    };
    
    private Handler mHandler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
            case 0:
                mAdapter.notifyDataSetChanged();
                mListView.onRefreshComplete();
//                if(mListData.size() == 0){
////                    Toast.makeText(context, R.string.dialog_title_nowData, Toast.LENGTH_LONG).show();
//                    mListView.setVisibility(View.GONE);
//                } else mListView.setVisibility(View.VISIBLE);
                break;
            case 1:
                mAdapter.notifyDataSetChanged();
//                if(mListData.size() == 0){
////                    Toast.makeText(context, R.string.dialog_title_nowData, Toast.LENGTH_LONG).show();
//                    mListView.setVisibility(View.GONE);
//                }else mListView.setVisibility(View.VISIBLE);
                break;
            case 2:
                Toast.makeText(context, R.string.no_data, Toast.LENGTH_LONG).show();
                break;
            case 3:
                NewsDetail newsDetail = (NewsDetail) msg.obj;
                Intent intent = new Intent(context, NewsDetailActivity.class);
                intent.putExtra("content", newsDetail.content);
                intent.putExtra("hostUrl", newsDetail.hostUrl);
                startActivity(intent);
                break;
            default:
                break;
            }
        }
    };
    
    public final class ViewHolder {
        public TextView title;
        public TextView time;
    }
    
    // 添加列表内容
    public class Adapter extends BaseAdapter {
        public Adapter(){}
        @Override
        public boolean areAllItemsEnabled() {
            return super.areAllItemsEnabled();
        }
        
        public Adapter(Context context) {
        }
        @Override
        public int getCount() {
            return mListData.size();
        }
        @Override
        public Object getItem(int position) {
            return null;
        }
        
        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(final int position, View convertView,
                ViewGroup parent) {
            final News news = mListData.get(position);
            ViewHolder holder = null;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = mInflater.inflate(R.layout.list_item_mian, null);
                holder.title = (TextView) convertView.findViewById(R.id.list_main_txt_title);
                holder.time = (TextView) convertView.findViewById(R.id.list_main_txt_time);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            // 进行数据设置
            holder.title.setText(news.title);
            holder.time.setText(news.time);
            convertView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) { // 加载详细新闻
                    detailUrl = mListData.get(position).childUrl;
                    AnsynHttpRequest.requestByGet(context, callbackData, R.string.http_news_detail, detailUrl, true, true, false);
                }
            });
            return convertView;
        }
    }
}

layout 如下：里面引用的是网上找的自定义下拉上啦刷新 可自行去找

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

    <com.vv.apps.hua.app.base.view.PullListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:cacheColorHint="@color/transparent"
        android:divider="@null"
        android:dividerHeight="0dp"
        android:fastScrollEnabled="true"
        android:focusable="true"
         />

</LinearLayout>