我的情况很糟糕，因为我的列表视图只更新了一次
idia正在关注，我想从网页下载帖子，这些帖子位于第3页和第5页，并在listview上显示它们。但是，列表视图仅显示第3页的帖子。虽然日志显示所有poast都已下载并存储在addList中。
所以问题 - objects from second itteration are not shown in listview。请帮我解决这个问题。
public class MyAddActivateActivity extends ErrorActivity implements
AddActivateInterface {
// All static variables
// XML node keys
View footer;
public static final String KEY_ID = "not_id";
public static final String KEY_TITLE = "not_title";
Context context;
public static final String KEY_PHOTO = "not_photo";
public final static String KEY_PRICE = "not_price";
public final static String KEY_DATE = "not_date";
public final static String KEY_DATE_TILL = "not_date_till";
private int not_source = 3;
JSONObject test = null;
ListView list;
MyAddActivateAdapter adapter;
ArrayList<HashMap<String, String>> addList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = this;
setContentView(R.layout.aadd_my_add_list_to_activate);
footer = getLayoutInflater().inflate(R.layout.loading_view, null);
addList = new ArrayList<HashMap<String, String>>();
ImageView back_button = (ImageView) findViewById(R.id.imageView3);
back_button.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Intent i = new Intent(getApplicationContext(),
ChooserActivity.class);
startActivity(i);
finish();
}
});
Intent intent = this.getIntent();
// if (intent != null) {
// not_source = intent.getExtras().getInt("not_source");
// }
GAdds g = new GAdds();
g.execute(1, not_source);
list = (ListView) findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter = new MyAddActivateAdapter(this, addList);
list.addFooterView(footer);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String add_id = ((TextView) view
.findViewById(R.id.tv_my_add_id)).getText().toString();
add_id = add_id.substring(4);
Log.d("ADD_ID", add_id);
// Launching new Activity on selecting single List Item
Intent i = new Intent(getApplicationContext(),
AddToCheckActivity.class);
// sending data to new activity
UILApplication.advert.setId(add_id);
startActivity(i);
finish();
}
});
}
private void emptyAlertSender() {
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle("Ничего не найдено");
alertDialog.setMessage("У вас нет неактивных объявлений.");
alertDialog.setButton("на главную",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(getApplicationContext(),
ChooserActivity.class);
startActivity(intent);
finish();
}
});
alertDialog.setIcon(R.drawable.ic_launcher);
alertDialog.show();
}
class GAdds extends AsyncTask<Integer, Void, JSONObject> {
@Override
protected JSONObject doInBackground(Integer... params) {
// addList.clear();
Log.d("backgraund", "backgraund");
UserFunctions u = new UserFunctions();
return u.getAdds(params[0] + "", params[1] + "");
}
@Override
protected void onPostExecute(JSONObject result) {
super.onPostExecute(result);
Log.d("postexecute", "postexecute");
footer.setVisibility(View.GONE);
JSONArray tArr = null;
if (result != null) {
try {
tArr = result.getJSONArray("notices");
for (int i = 0; i < tArr.length(); i++) {
JSONObject a = null;
HashMap<String, String> map = new HashMap<String, String>();
a = (JSONObject) tArr.get(i);
if (a.getInt("not_status") == 0) {
int premium = a.getInt("not_premium");
int up = a.getInt("not_up");
if (premium == 1 && up == 1) {
map.put("status", R.drawable.vip + "");
} else if (premium == 1) {
map.put("status", R.drawable.prem + "");
} else if (premium != 1 && up == 1) {
map.put("status", R.drawable.up + "");
} else {
map.put("status", 0 + "");
}
map.put(KEY_ID, "ID: " + a.getString(KEY_ID));
map.put(KEY_TITLE, a.getString(KEY_TITLE));
map.put(KEY_PRICE,
"Цена: " + a.getString(KEY_PRICE) + " грн.");
map.put(KEY_PHOTO, a.getString(KEY_PHOTO));
map.put(KEY_DATE,
"Создано: " + a.getString(KEY_DATE));
map.put(KEY_DATE_TILL,
"Действительно до: "
+ a.getString(KEY_DATE_TILL));
map.put("check", "false");
Log.d("MyAddList", "map was populated");
}
if (map.size() > 0)
{
addList.add(map);
Log.d("MyAddList", "addlist was populated");
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
if (UILApplication.login != 2) {
UILApplication.login = 3;
}
onCreateDialog(LOST_CONNECTION).show();
}
runOnUiThread(new Runnable() {
public void run() {
adapter.notifyDataSetChanged();
}
});
if (not_source == 3) {
not_source = 5;
GAdds task = new GAdds();
task.execute(1, 5);
}
if (not_source == 5) {
Log.d("ID", m.get(KEY_ID));
if (addList.size() == 0) {
emptyAlertSender();
}
}
}
}
@SuppressWarnings("unchecked")
public void addAct(View v) {
AddActivate aAct = new AddActivate(this);
aAct.execute(addList);
}
@Override
public void onAddActivate(JSONObject result) {
if (result != null) {
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
}
适配器
public class MyAddActivateAdapter extends BaseAdapter {
private List<Row> rows;
private ArrayList<HashMap<String, String>> data;
private Activity activity;
public MyAddActivateAdapter(Activity activity,
ArrayList<HashMap<String, String>> data) {
Log.d("mediaadapter", "listcreation: " + data.size());
rows = new ArrayList<Row>();// member variable
this.data = data;
this.activity = activity;
}
@Override
public int getViewTypeCount() {
return RowType.values().length;
}
@Override
public void notifyDataSetChanged() {
rows.clear();
for (HashMap<String, String> addvert : data) {
rows.add(new MyAddActivateRow((LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE), addvert));
Log.d("MyActivateAdapter", "update " + data.size());
}
}
@Override
public int getItemViewType(int position) {
return rows.get(position).getViewType();
}
public int getCount() {
return rows.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
return rows.get(position).getView(convertView);
}
}
答案 0 :(得分：0)
我认为问题是你没有调用notifyDataSetChanged（）的超类，也许试试
@Override
public void notifyDataSetChanged() {
rows.clear();
for (HashMap<String, String> addvert : data) {
rows.add(new MyAddActivateRow((LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE), addvert));
Log.d("MyActivateAdapter", "update " + data.size());
}
super.notifyDataSetChanged();
}