xListView的简单使用

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xListView的使用：下面是写过的一段代码，加载网络图片适配listview1：将xlistview当成本工程的依赖包2：布局文件<com.limxing.xlistview.view.XListView    android:id="@+id/lv"    android:layout_width="match_parent"    android:layout_height="match_parent">    </com.limxing.xlistview.view.XListView>3：主界面public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {    private static final String TAG ="MainActivity" ;    private XListView lv;    private  int index=1;    private MyListViewAdapter adapter;    private boolean b = true;    private ProgressDialog dialog;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv = (XListView) findViewById(R.id.lv);        //设置支持上拉加载        lv.setPullLoadEnable(true);        //设置支持下拉刷新        lv.setPullRefreshEnable(true);        //设置监听事件，实现接口并实现接口里的两个方法        lv.setXListViewListener(this);        getData(index);    }    //请求数据    private void getData(int index) {        new AsyncTask<String,Void,String>(){            @Override            protected void onPostExecute(String s) {                super.onPostExecute(s);                dialog.dismiss();                if (s!=null){                    Gson gson = new Gson();                    Foods foods = gson.fromJson(s, Foods.class);                    List<Foods.ResultBean.DataBean> list = foods.getResult().getData();                   //当适配器为空时，创建适配器并设置                    if (adapter == null){                         adapter = new MyListViewAdapter(MainActivity.this,list);                         lv.setAdapter(adapter);                    }else{                     //否则调用适配器里自定义的加载更多的方法  添加更多数据，将读取数据所得到的集合跟自定义的boolean值传过去                        adapter.addMore(foods.getResult().getData(),b);                     //刷新适配器                        adapter.notifyDataSetChanged();                    }                }            }            @Override            protected String doInBackground(String... params) {                try {                    String path = params[0];                    URL url = new URL(path);                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();                    connection.setRequestMethod("GET");                    connection.setReadTimeout(5000);                    connection.setConnectTimeout(5000);                    if (connection.getResponseCode() == 200){                        InputStream is = connection.getInputStream();                        String json = StreamToos.readStreamWork(is);                        return json;                    }                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }                return null;            }        }.execute("http://apis.juhe.cn/cook/query?key=de558ae7e2e2a24fc1f013fbb3327ae1&menu=红烧肉&pn="+index);    }    //下拉刷新    @Override    public void onRefresh() {        b=false;         //index是页码，表示第几页        ++index;        getData(index);        lv.stopRefresh(true);    }    //上拉加载    @Override    public void onLoadMore() {        b=true;        ++index;        getData(index);        lv.stopLoadMore();    }}4：适配器public class MyListViewAdapter extends BaseAdapter {    private Context context;    private List<Foods.ResultBean.DataBean> list;    public MyListViewAdapter(Context context, List<Foods.ResultBean.DataBean> list) {        this.context=context;        this.list=list;    }    //自定义添加更多的方法    public void addMore(List<Foods.ResultBean.DataBean> lists,boolean b){        for (Foods.ResultBean.DataBean dataBeen:lists) {         //遍历传过来的集合，当传过来的boolean值为true时，将数据添加到之前的适配器的集合（默认往后面添加）           //否则将数据添加到集合的前面            if (b){                list.add(dataBeen);            }else{                list.add(0,dataBeen);            }        }    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return null;    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        if (convertView==null){            convertView=View.inflate(context, R.layout.listview_item,null);        }        ImageView image_1 = (ImageView) convertView.findViewById(R.id.image_1);        TextView text_1 = (TextView) convertView.findViewById(R.id.text_1);        text_1.setText(list.get(position).getTitle());//        使用默认的ImageLoaderConfiguration        ImageLoader.getInstance().displayImage(list.get(position).getAlbums().get(0),image_1);        return convertView;    }}
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