Android开源框架XListview的使用

 1 //xlistview设置属性
 2         lv_fragmain.setPullLoadEnable(true);//激活加载更多
 3         lv_fragmain.setPullRefreshEnable(true);//激活下拉刷新
 4 
 5 
 6  //上拉加载下拉刷新
 7         lv_fragmain.setXListViewListener(new XListView.IXListViewListener() {
 8             //下拉刷新回调
 9             @Override
10             public void onRefresh() {
11                 mRefresh();
12             }
13             //上拉加载回调
14             @Override
15             public void onLoadMore() {
16                 //1.加载新数据
17                 initData(2);
18                 //2.把新数据追加到集合里
19                 //3.通知适配器刷新
20                 //4.停止加载更多
21             }
22         });
23 /**
24      * 下拉刷新
25      */
26     private void mRefresh() {
27         //1.清空之前集合的数据
28         if (!list.isEmpty()) {
29             list.clear();
30         }
31         //2.加载新数据
32         initData(1);
33     }
34 
35 /**
36      * 初始化数据
37      *
38      * @param i
39      */
40     private void initData(final int i) {
41         //日期
42         Date date = new Date();
43         SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd  EEEE");
44         String time = sdf.format(date);
45         tv_fragmain_date.setText(time);
46         //lv数据
47         new Thread() {
48             @Override
49             public void run() {
50                 try {
51                     URL url = new URL(path);
52                     HttpURLConnection con = (HttpURLConnection) url.openConnection();
53                     con.setRequestMethod("GET");
54                     con.setConnectTimeout(3000);
55                     if (con.getResponseCode() == 200) {
56                         InputStream is = con.getInputStream();
57                         String json = StreamUtil.decodeStream(is);
58                         Gson gson = new Gson();
59                         News news = gson.fromJson(json, News.class);
60                         List<News.Data> data = news.data;
61                         list.addAll(data);//lv的数据
62                         Message msg = new Message();
63                         msg.what = i;
64                         handler.sendMessage(msg);
65                     }
66                 } catch (IOException e) {
67                     e.printStackTrace();
68                 }
69             }
70         }.start();
71     }
72  /**
73      * 停止加载更多
74      */
75     private void stopXlistView() {
76         //设置刷新时间
77         lv_fragmain.setRefreshTime(dateFormat());
78         //停止加载更多
79         lv_fragmain.stopLoadMore();
80         //停止刷新
81         lv_fragmain.stopRefresh();
82         iv_main_refresh.clearAnimation();//停止动画
83     }

  1 import android.content.Context;
  2 import android.graphics.drawable.Drawable;
  3 import android.text.TextUtils;
  4 import android.view.View;
  5 import android.view.ViewGroup;
  6 import android.widget.BaseAdapter;
  7 import android.widget.ImageView;
  8 import android.widget.TextView;
  9 import android.widget.VideoView;
 10 import com.example.todaysnews.R;
 11 import com.example.todaysnews.bean.News;
 12 import com.nostra13.universalimageloader.core.ImageLoader;
 13 import java.util.List;
 14 /**
 15  * Created by dc on 2016/9/8.
 16  */
 17 public class MainLv_Adapter extends BaseAdapter {
 18     private Context context;
 19     private List<News.Data> list;
 20     final int TYPE_1 = 0;//置顶
 21     final int TYPE_2 = 1;//三张图
 22     final int TYPE_3 = 2;//一张图在右边
 23     final int TYPE_4 = 3;//一张图在下边
 24     public MainLv_Adapter(Context context, List<News.Data> data) {
 25         this.context = context;
 26         this.list = data;
 27     }
 28     /*
 29        为了加载不同布局，要重写以下两个方法
 30       */
 31     @Override
 32     public int getViewTypeCount() {
 33         return 4;
 34     }
 35     @Override
 36     public int getItemViewType(int position) {
 37         News.Data data = list.get(position);
 38         if( !data.has_image && !data.has_video){//置顶
 39             return TYPE_1;
 40         }
 41         if(data.has_image){//带图
 42             if(data.image_list!=null && !data.image_list.isEmpty()){//有三张图
 43                 return TYPE_2;
 44             }
 45             if(data.large_image_list!=null && !data.large_image_list.isEmpty()){//一张大图显示在下方
 46                 return TYPE_4;
 47             }
 48             if(data.middle_image!=null){//中图显示在右边
 49                 return TYPE_3;
 50             }
 51         }
 52         if(data.has_video){//带视频
 53             if(data.large_image_list!=null){//大视屏在下方
 54                 return TYPE_4;
 55             }
 56             if(data.middle_image!=null){//小视屏在右边
 57                 return TYPE_3;
 58             }
 59         }
 60         return super.getItemViewType(position);
 61     }
 62     @Override
 63     public int getCount() {
 64         return list.size();
 65     }
 66     class ViewHolder1{
 67         TextView tv_lable_comment;//评论数
 68         TextView tv_lable_title;//标题
 69         TextView tv_lable_source;//出处
 70     }
 71     class ViewHolder2{
 72         TextView tv_bottom3_title;//标题
 73         TextView tv_bottom3_comment;
 74         TextView tv_bottom3_source;
 75         ImageView iv_bottom3_1;
 76         ImageView iv_bottom3_2;
 77         ImageView iv_bottom3_3;
 78     }
 79     class ViewHolder3{
 80         TextView tv_right_title;
 81         TextView tv_right_source;
 82         TextView tv_right_comment;
 83         ImageView iv_right;
 84     }
 85     class ViewHolder4{
 86         TextView tv_bottom1_title;
 87         TextView tv_bottom1_source;
 88         TextView tv_bottom1_comment;
 89         ImageView iv_bottom1;
 90         ImageView iv_bottom1_play;
 91         VideoView vv_bottom1;
 92     }
 93     @Override
 94     public View getView(int position, View convertView, ViewGroup parent) {
 95         ViewHolder1 vh1 = null;
 96         ViewHolder2 vh2 = null;
 97         ViewHolder3 vh3 = null;
 98         ViewHolder4 vh4 = null;
 99         News.Data data = list.get(position);//当前点击对象
100         int type = getItemViewType(position);//获得条目的类型
101         ImageLoader imageLoader = ImageLoader.getInstance();//imageloader
102         if(convertView == null){
103             switch(type){
104                 case TYPE_1://无图
105                     convertView = View.inflate(context, R.layout.item_mainlv_lable,null);
106                     vh1 = new ViewHolder1();
107                     vh1.tv_lable_comment = (TextView) convertView.findViewById(R.id.tv_lable_comment);
108                     vh1.tv_lable_title = (TextView) convertView.findViewById(R.id.tv_lable_title);
109                     vh1.tv_lable_source = (TextView) convertView.findViewById(R.id.tv_lable_source);
110                     convertView.setTag(vh1);
111                     break;
112                 case TYPE_2://三张图
113                     convertView = View.inflate(context, R.layout.item_mainlv_bottom3,null);
114                     vh2 = new ViewHolder2();
115                     vh2.tv_bottom3_title = (TextView) convertView.findViewById(R.id.tv_bottom3_title);
116                     vh2.tv_bottom3_comment = (TextView) convertView.findViewById(R.id.tv_bottom3_comment);
117                     vh2.tv_bottom3_source = (TextView) convertView.findViewById(R.id.tv_bottom3_source);
118                     vh2.iv_bottom3_1 = (ImageView) convertView.findViewById(R.id.iv_bottom3_1);
119                     vh2.iv_bottom3_2 = (ImageView) convertView.findViewById(R.id.iv_bottom3_2);
120                     vh2.iv_bottom3_3 = (ImageView) convertView.findViewById(R.id.iv_bottom3_3);
121                     convertView.setTag(vh2);
122                     break;
123                 case TYPE_3://一张图在右边
124                     convertView = View.inflate(context, R.layout.item_mainlv_right,null);
125                     vh3 = new ViewHolder3();
126                     vh3.tv_right_title = (TextView) convertView.findViewById(R.id.tv_right_title);
127                     vh3.tv_right_comment = (TextView) convertView.findViewById(R.id.tv_right_comment);
128                     vh3.tv_right_source = (TextView) convertView.findViewById(R.id.tv_right_source);
129                     vh3.iv_right = (ImageView) convertView.findViewById(R.id.iv_right);
130                     convertView.setTag(vh3);
131                     break;
132                 case TYPE_4://一张图在下边
133                     convertView = View.inflate(context, R.layout.item_mainlv_bottom1,null);
134                     vh4 = new ViewHolder4();
135                     vh4.tv_bottom1_title = (TextView) convertView.findViewById(R.id.tv_bottom1_title);
136                     vh4.tv_bottom1_source = (TextView) convertView.findViewById(R.id.tv_bottom1_source);
137                     vh4.tv_bottom1_comment = (TextView) convertView.findViewById(R.id.tv_bottom1_comment);
138                     vh4.iv_bottom1 = (ImageView) convertView.findViewById(R.id.iv_bottom1);
139                     vh4.iv_bottom1_play = (ImageView) convertView.findViewById(R.id.iv_bottom1_play);
140                     convertView.setTag(vh4);
141                     break;
142             }
143         }else{
144             switch (type){
145                 case TYPE_1:
146                     vh1 = (ViewHolder1) convertView.getTag();
147                     break;
148                 case TYPE_2:
149                     vh2 = (ViewHolder2) convertView.getTag();
150                     break;
151                 case TYPE_3:
152                     vh3 = (ViewHolder3) convertView.getTag();
153                     break;
154                 case TYPE_4:
155                     vh4 = (ViewHolder4) convertView.getTag();
156                     break;
157             }
158         }
159         switch (type){
160             case TYPE_1:
161                 vh1.tv_lable_title.setText(data.title);
162                 vh1.tv_lable_source.setText(data.source);
163                 vh1.tv_lable_comment.setText("评论\t"+data.comment_count);
164                 if(!TextUtils.isEmpty(data.label)){
165                     Drawable drawable = context.getResources().getDrawable(R.drawable.zhiding);
166                     drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
167                     vh1.tv_lable_source.setCompoundDrawables(drawable,null,null,null);
168                 }else if(data.hot==1){
169                     Drawable drawable = context.getResources().getDrawable(R.drawable.hoticon_textpage);
170                     drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
171                     vh1.tv_lable_source.setCompoundDrawables(drawable,null,null,null);
172                 }
173                 break;
174             case TYPE_2:
175                 vh2.tv_bottom3_title.setText(data.title);
176                 vh2.tv_bottom3_source.setText(data.source);
177                 vh2.tv_bottom3_comment.setText("评论\t"+data.comment_count);
178                 if(data.hot==1){
179                     Drawable drawable = context.getResources().getDrawable(R.drawable.hoticon_textpage);
180                     drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
181                     vh2.tv_bottom3_source.setCompoundDrawables(drawable,null,null,null);
182                 }
183                 //图
184                 imageLoader.displayImage(data.image_list.get(0).url,vh2.iv_bottom3_1);
185                 imageLoader.displayImage(data.image_list.get(1).url,vh2.iv_bottom3_2);
186                 imageLoader.displayImage(data.image_list.get(2).url,vh2.iv_bottom3_3);
187                 break;
188             case TYPE_3:
189                 vh3.tv_right_title.setText(data.title);
190                 vh3.tv_right_comment.setText("评论\t"+data.comment_count);
191                 vh3.tv_right_source.setText(data.source);
192                 if(data.hot==1){
193                     Drawable drawable = context.getResources().getDrawable(R.drawable.hoticon_textpage);
194                     drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
195                     vh3.tv_right_source.setCompoundDrawables(drawable,null,null,null);
196                 }
197                 //图
198                 imageLoader.displayImage(data.middle_image.url,vh3.iv_right);
199                 break;
200             case TYPE_4:
201                 vh4.tv_bottom1_title.setText(data.title);
202                 vh4.tv_bottom1_comment.setText("评论\t"+data.comment_count);
203                 vh4.tv_bottom1_source.setText(data.source);
204                 if(data.hot==1){
205                     Drawable drawable = context.getResources().getDrawable(R.drawable.hoticon_textpage);
206                     drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
207                     vh4.tv_bottom1_source.setCompoundDrawables(drawable,null,null,null);
208                 }
209                 if(data.has_video){
210                     vh4.iv_bottom1_play.setVisibility(View.VISIBLE);//可见
211                 }
212                 //图
213                 imageLoader.displayImage(data.large_image_list.get(0).url,vh4.iv_bottom1);
214                 break;
215         }
216         return convertView;
217     }
218     @Override
219     public Object getItem(int position) {
220         return null;
221     }
222     @Override
223     public long getItemId(int position) {
224         return 0;
225     }
226 }