多条目加载+XlistView刷新加载更多

《1、》MainActivity代码

public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {

private Handler handler=new Handler(){

private MyAdapter adapter;

@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);

switch (msg.what){
case 0:
adapter = new MyAdapter();
xlv.setAdapter(adapter);
break;
case 1:
adapter.notifyDataSetChanged();
xlv.stopRefresh();
break;
case 2:
adapter.notifyDataSetChanged();
xlv.stopLoadMore();
break;
}
}
};
// private List<Bean.DataBean> data;
private List<XinBean.DataBean> data1;
private DisplayImageOptions options;
private XListView xlv;
private int pager=7;
private int pagers=1;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
xlv = (XListView) findViewById(R.id.xlv);
options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.mipmap.ic_launcher)
.cacheInMemory(true)
.cacheOnDisk(true)
.build();

xlv.setXListViewListener(this);
xlv.setPullLoadEnable(true);
xlv.setPullRefreshEnable(true);
xlv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

//                Intent intent = new Intent(MainActivity.this, WebActivity.class);
//                String article_url = data.get(position).getArticle_url();
//                intent.putExtra("url",article_url);
//                startActivity(intent);
}
});
new Thread(){

@Override
public void run() {
super.run();
// String path="http://ic.snssdk.com/2/article/v25/stream/?category=news_tech&count=20&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457695555&loc_mode=5&lac=4527&cid=28883&iid=3835029558&device_id=12211880440&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=1";
String path="http://ic.snssdk.com/2/article/v25/stream/?count=20&min_behot_time=1457659690&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457672153&loc_mode=5&lac=4527&cid=28883&iid=3839760160&device_id=12246291682&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=19&os_version=4.4.4&uuid=352284045861006&openudid=84c1c7b192991cc6";
Gson gson = new Gson();
String json = NetWork.getJson(path);
XinBean xinBean = gson.fromJson(json, XinBean.class);
//data = bean.getData();
data1 = xinBean.getData();

handler.sendEmptyMessage(0);
}
}.start();
}

@Override
public void onRefresh() {
handler.postDelayed(new Runnable() {
@Override
public void run() {
new Thread(){
@Override
public void run() {
super.run();
pager++;
//String path="http://ic.snssdk.com/2/article/v25/stream/?category=news_tech&count=20&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457695555&loc_mode=5&lac=4527&cid=28883&iid=3835029558&device_id=12211880440&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api="+pager;
String path="http://ic.snssdk.com/2/article/v25/stream/?count=20&min_behot_time=1457659690&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457672153&loc_mode=5&lac=4527&cid=28883&iid=3839760160&device_id=12246291682&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=19&os_version=4.4.4&uuid=352284045861006&openudid=84c1c7b192991cc"+pager;
String json = NetWork.getJson(path);

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Gson gson = new Gson();
XinBean xinBean = gson.fromJson(json, XinBean.class);
List<XinBean.DataBean> data2 = xinBean.getData();
data1.addAll(0,data2);
handler.sendEmptyMessage(1);
}
}.start();

}
},2000);

}

@Override
public void onLoadMore() {

handler.postDelayed(new Runnable() {
@Override
public void run() {
new Thread(){
@Override
public void  run() {
super.run();

pagers++;
//String path="http://ic.snssdk.com/2/article/v25/stream/?category=news_tech&count=20&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457695555&loc_mode=5&lac=4527&cid=28883&iid=3835029558&device_id=12211880440&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api="+pagers;
String path="http://ic.snssdk.com/2/article/v25/stream/?count=20&min_behot_time=1457659690&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1457672153&loc_mode=5&lac=4527&cid=28883&iid=3839760160&device_id=12246291682&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=iToolsAVM&os_api=19&os_version=4.4.4&uuid=352284045861006&openudid=84c1c7b192991cc"+pagers;
String json = NetWork.getJson(path);
Gson gson = new Gson();
XinBean xinBean = gson.fromJson(json, XinBean.class);
List<XinBean.DataBean> data3 = xinBean.getData();
data1.addAll(data3);

handler.sendEmptyMessage(2);
}
}.start();
}
},2000);
}

/**
* 多条目加载的适配器
*/
class MyAdapter extends BaseAdapter{
//有图片
private static final int TYPE_1=0;
//无图片
private static final int TYPE_2=1;
@Override
public int getItemViewType(int position) {
boolean has_image = data1.get(position).isHas_image();
if (has_image){
return TYPE_1;
}else {
return TYPE_2;
}

}

@Override
public int getViewTypeCount() {
return 2;
}

@Override
public int getCount() {
return data1.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) {
ViewHolder holder;
ViewHolder2 holder2;
int type = getItemViewType(position);
switch (type){
case 0:
if (convertView==null){
holder2 = new ViewHolder2();
convertView=View.inflate(MainActivity.this,R.layout.xlist_item2,null);
holder2.tv_title2= (TextView) convertView.findViewById(R.id.tv_title2);
holder2.iv1_item2= (ImageView) convertView.findViewById(R.id.iv1_item2);
holder2.iv2_item2= (ImageView) convertView.findViewById(R.id.iv2_item2);
holder2.iv3_item2= (ImageView) convertView.findViewById(R.id.iv3_item2);
holder2.tv_source2= (TextView) convertView.findViewById(R.id.tv_source2);
convertView.setTag(holder2);

}else{

holder2= (ViewHolder2) convertView.getTag();
}
holder2.tv_title2.setText(data1.get(position).getTitle());
holder2.tv_title2.setText(data1.get(position).getSource());
List<XinBean.DataBean.Images> image_list = data1.get(position).getImage_list();
ImageLoader.getInstance().displayImage(+.get(0).getUrl(), holder2.iv1_item2);
ImageLoader.getInstance().displayImage(image_list.get(1).getUrl(), holder2.iv2_item2);
ImageLoader.getInstance().displayImage(image_list.get(2).getUrl(), holder2.iv3_item2);

break;
case 1:

if (convertView==null){
holder = new ViewHolder();
convertView=View.inflate(MainActivity.this,R.layout.xlist_item1,null);
holder.tv_source1= (TextView) convertView.findViewById(R.id.tv_source1);
holder.tv_title1= (TextView) convertView.findViewById(R.id.tv_title1);
holder.iv_item1= (ImageView) convertView.findViewById(R.id.iv_item1);
convertView.setTag(holder);
}else{
holder= (ViewHolder) convertView.getTag();
}
holder.tv_title1.setText(data1.get(position).getTitle());
holder.tv_source1.setText(data1.get(position).getSource());

break;
}
return convertView;
}
class ViewHolder{
TextView tv_title1;
TextView tv_source1;
ImageView iv_item1;
}

class ViewHolder2{

TextView tv_title2;
ImageView iv1_item2;
ImageView iv2_item2;
ImageView iv3_item2;
TextView tv_source2;
}
}

}

《2》网络请求

public class NetWork {public static String getJson(String path){try {URL url = new URL(path);HttpURLConnection connection= (HttpURLConnection) url.openConnection();connection.setRequestMethod("GET");connection.setConnectTimeout(3000);int responseCode = connection.getResponseCode();ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();if (responseCode==200){InputStream inputStream = connection.getInputStream();byte[] buffer=new byte[1024];int read = 0;while((read = inputStream.read(buffer))!=-1){byteArrayOutputStream.write(buffer,0,read);}return byteArrayOutputStream.toString();}} catch (Exception e) {e.printStackTrace();}return null;}}

public class SQLDataBaseOpenHelper extends SQLiteOpenHelper {public SQLDataBaseOpenHelper(Context context) {super(context, "users", null, 1);}@Overridepublic void onCreate(SQLiteDatabase db) {db.execSQL("create table news (id integer primary key autoincrement,item_id int(20),title varchar(20),source varchar(20),article_url varchar(40))");}@Overridepublic void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}}

public class Dao {private final SQLiteDatabase database;public Dao(Context context){SQLDataBaseOpenHelper baseOpenHelper = new SQLDataBaseOpenHelper(context);database = baseOpenHelper.getReadableDatabase();}public boolean add(int item_id,String title,String source,String article_url ){ContentValues values = new ContentValues();values.put("item_id",item_id);values.put("title",title);values.put("source",source);values.put("article_url",article_url);long i = database.insert("news", null, values);if (i!=-1){return true;}else {return false;}}}