上拉加载显示不同的item

来源：互联网发布：淘宝能代理几个分销商编辑：程序博客网时间：2024/06/05 16:34

public class MainActivity extends Activity implements IXListViewListener{
   private List<News> pullXMLUtils;
   private Handler handler2;

   private Handler handler=new Handler(){
       public void handleMessage(android.os.Message msg) {
           news.clear();
           news.addAll(0,pullXMLUtils);
           myAdaoter.notifyDataSetChanged();

       };
   };
private MyAdaotera myAdaoter;
private   List<News> news=new ArrayList<News>();
private int id=1;
private XListView xlistview;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        xlistview = (XListView) findViewById(R.id.xlistviewa);
        //设置xlistview
        handler2=new Handler();
        xlistviewValue();
        getxml("刷新");
        xlistview.setOnItemClickListener(new OnItemClickListener() {
           @Override
           public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

long arg3) {

//跳转传值

               Intent intent=new Intent(MainActivity.this, OtherActivity.class);

               intent.putExtra("idaa", news.get(arg2-1).getId());
               Toast.makeText(getApplicationContext(), "Main++id"+ news.get(arg2-1).getId(), 0).show();
               startActivity(intent);
           }
       });
    }
    private void xlistviewValue() {
       xlistview.setPullLoadEnable(true);
       xlistview.setPullRefreshEnable(true);
       xlistview.setXListViewListener(this);

       // 下拉刷新可用
       // 加载更多可用
   }

   private void getxml(final String str) {
       String url="http://www.oschina.net/action/api/tweet_list?uid=0&pageIndex="+id+"&pageSize=20";
       HttpUtils httpUtils = new HttpUtils();
       httpUtils.configCurrentHttpCacheExpiry(0);
       httpUtils.send(HttpMethod.GET, url, new RequestCallBack<String>() {
           @Override
           public void onFailure(HttpException arg0, String arg1) {

           }
           @Override
           public void onSuccess(ResponseInfo<String> arg0) {
               String result = arg0.result;

               InputStream inputStream = new ByteArrayInputStream(result.getBytes());
               pullXMLUtils = Xutils.PullXMLUtils(inputStream, "UTF-8");

               Log.d("TAG",news.toString());
               if(str.equals("刷新")){
                   handler.sendEmptyMessage(0123);
               }else{

                   news.addAll(pullXMLUtils);
               }
               serAdapter();
           }
           private void serAdapter() {
               if(myAdaoter==null){
                   myAdaoter=new MyAdaotera(MainActivity.this,news);
                   xlistview.setAdapter(myAdaoter);

               }else{
                   myAdaoter.notifyDataSetChanged();
               }

           }
       });
   }

   private void onLoad() {
       xlistview.stopRefresh();
       xlistview.stopLoadMore();
       xlistview.setRefreshTime("刚刚");
   }
   @Override
   public void onRefresh() {
       handler2.postDelayed(new Runnable() {
           @Override
           public void run() {

               id=id+1;
               getxml("刷新");
               onLoad();
               Toast.makeText(getApplicationContext(), "刷新", 0).show();
           }
       }, 2000);

   }
   @Override
   public void onLoadMore() {
       handler2.postDelayed(new Runnable() {
           @Override
           public void run() {

               id=id+1;
               getxml("加载");
               onLoad();
               Toast.makeText(getApplicationContext(), "加载", 0).show();
           }
       }, 2000);

   }

}

//封装的解析方法

public class Xutils {

   public static List<News> PullXMLUtils(InputStream inputStream, String encode) {
       List<News> list = null;
       News news = null;
       XmlPullParserFactory xmlPullParserFactory = null;
       try {
           // 创建PullParserFactory构造器
           xmlPullParserFactory = XmlPullParserFactory.newInstance();
           // 创建XmlPullParser解析器，或者通过xmlPullParser = Xml.newPullParser();
           XmlPullParser parser = xmlPullParserFactory.newPullParser();
           // 设置我们的数据流
           parser.setInput(inputStream, encode);
           // 获取节点类型
           int type = parser.getEventType();
           while (type != XmlPullParser.END_DOCUMENT) {
               switch (type) {
               case XmlPullParser.START_DOCUMENT:
                   Log.d("TAG", "开始打开文档");
                   list = new ArrayList<News>();
                   break;
               case XmlPullParser.START_TAG:
                   Log.d("TAG", "开始解析文件");
                   if ("tweet".equals(parser.getName())) {
                       news = new News();
                   } else if ("id".equals(parser.getName())) {
                       news.id = parser.nextText();
                   } else if ("portrait".equals(parser.getName())) {
                       news.portrait = parser.nextText();
                   } else if ("author".equals(parser.getName())) {
                       news.author = parser.nextText();
                   } else if ("authorid".equals(parser.getName())) {
                       news.authorid = parser.nextText();
                   } else if ("body".equals(parser.getName())) {
                       news.body = parser.nextText();
                   } else if ("pubDate".equals(parser.getName())) {
                       news.pubDate = parser.nextText();
                   } else if ("imgBig".equals(parser.getName())) {
                       news.imgBig = parser.nextText();
                   }
                   break;
               case XmlPullParser.END_TAG:
                   if ("tweet".equals(parser.getName())) {// book结束标签
                       list.add(news);
                   }
                   break;
               case XmlPullParser.END_DOCUMENT:
                   break;
               }
               type = parser.next();
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
       return list;
   }

}

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