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我有一個問題，我需要使用asynctask在地圖片段上添加標記。 這裏我的AsyncTask類使用asynctask在地圖片段上添加標記
private class LoadViewTask extends AsyncTask<Void, MyTaskParams, Void> {
private SearchListAdapter adapter;
// Before running code in separate thread
@Override
protected void onPreExecute() {
String filterRev = "";
try {
filterRev = URLEncoder.encode(
MainActivity.FILTER_SEARCH_ENTERPRISE, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
final String dummyURL5star = MainActivity.BASE_URL
+ "v_enterprise-select5star.php?filteritem=" + filterRev;
xResult5star = MainActivity.getRequestSelect(dummyURL5star,
SearchActivity.this);
list = (ListView) findViewById(R.id.lvRowsEnterpriseSearch);
adapter = new SearchListAdapter(SearchActivity.this, listRow);
list.setAdapter(adapter);
registerForContextMenu(list);
//adapter = (SearchListAdapter) list.getAdapter();
}
// The code to be executed in a background thread.
@Override
protected Void doInBackground(Void... params) {
/*final String dummyURL4star = MainActivity.BASE_URL
+ "v_enterprise-select4star.php?filteritem=" + filterRev;
final String dummyURL3star = MainActivity.BASE_URL
+ "v_enterprise-select3star.php?filteritem=" + filterRev;
final String dummyURL2star = MainActivity.BASE_URL
+ "v_enterprise-select2star.php?filteritem=" + filterRev;
final String dummyURL1star = MainActivity.BASE_URL
+ "v_enterprise-select1star.php?filteritem=" + filterRev; $*/
try {
jObject5 = new JSONObject(xResult5star);
JSONArray menuitemArray = jObject5.getJSONArray("venterprise");
for (int i = 0; i < menuitemArray.length(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
map.put(KEY_IDENTERPRISE, menuitemArray.getJSONObject(i)
.getString("identerprise").toString());
map.put(KEY_NAMAENTERPRISE, menuitemArray.getJSONObject(i)
.getString("nama").toString());
map.put(KEY_ALAMATENTERPRISE, menuitemArray.getJSONObject(i)
.getString("address").toString());
map.put(KEY_KATEGORI,
menuitemArray.getJSONObject(i).getString("linkkat")
.toString());
map.put(KEY_LINK,
menuitemArray.getJSONObject(i).getString("linksub")
.toString());
map.put(KEY_KAT,
menuitemArray.getJSONObject(i).getString("kategori")
.toString());
map.put(KEY_SUB,
menuitemArray.getJSONObject(i).getString("subkategori")
.toString());
map.put(KEY_IDKAT,
menuitemArray.getJSONObject(i).getString("idkategori")
.toString());
map.put(KEY_IDSUB,
menuitemArray.getJSONObject(i)
.getString("idsubkategori").toString());
map.put(KEY_THUMB_URL, menuitemArray.getJSONObject(i)
.getString("picture").toString());
map.put(KEY_HITS,
menuitemArray.getJSONObject(i).getString("hit")
.toString());
map.put(KEY_NOKONTRAKS, menuitemArray.getJSONObject(i)
.getString("nokontrak").toString());
map.put(KEY_STAR, "5");
LatLng companyPosition = new LatLng(Double.parseDouble(menuitemArray
.getJSONObject(i).getString("latitude").toString()),
Double.parseDouble(menuitemArray.getJSONObject(i)
.getString("longitude").toString()));
String nama = menuitemArray.getJSONObject(i)
.getString("nama").toString();
String address = menuitemArray.getJSONObject(i)
.getString("address").toString();
MyTaskParams company = new MyTaskParams(map, companyPosition, nama, address);
publishProgress(company);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
// Update the progress
@Override
protected void onProgressUpdate(MyTaskParams... values) {
mapCompany = ((MapFragment) getFragmentManager().findFragmentById(
R.id.mapListSearch)).getMap();
listRow.add(values[0].companyList);
mapCompany.addMarker(new MarkerOptions()
.title(values[0].nama)
.snippet(values[0].address)
.position(values[0].position)
.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
}
// after executing the code in the thread
@Override
protected void onPostExecute(Void result) {
}
}
，這是我MyTaskParam類
public class MyTaskParams {
HashMap<String, String> companyList = new HashMap<String, String>();
LatLng position = new LatLng(0, 0);
String nama, address;
MyTaskParams(HashMap<String, String> companyList, LatLng position, String nama, String address) {
this.companyList = companyList;
this.position = position;
this.nama = nama;
this.address = address;
}
}
我有一些情況，如果我做了上面的代碼，該列表將不會出現包括標記。
但是，如果我只通過HashMap和改變MyTaskParam becom這樣的：
public class MyTaskParams {
HashMap<String, String> companyList = new HashMap<String, String>();
MyTaskParams(HashMap<String, String> companyList) {
this.companyList = companyList;
}
}
MyTaskParams company = new MyTaskParams(map);
publishProgress(company);
和progressUpdate這樣的：
protected void onProgressUpdate(MyTaskParams... values) {
listRow.add(values[0].companyList);
}
列表中出現很好 有沒有人有過同樣的問題？ 我該如何解決這個問題？ 謝謝