我有listview，在点击项目后过滤listview的项目时，它总是返回listview项目的错误位置。
以下是适配器类：
public class AdmitPatientAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap<String, String>> data;
ArrayList<HashMap<String, String>> TempArrList = new ArrayList<>();
private static LayoutInflater inflater = null;
public static final String TAG_MRDNO = "mrd_no";
public AdmitPatientAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
data = d;
TempArrList.addAll(d);
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return TempArrList.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
TempArrList.clear();
if (charText.length() == 0) {
TempArrList.addAll(data);
} else {
HashMap<String, String> tMap;
for (int i = 0; i < data.size(); i++) {
tMap = data.get(i);
if (charText.length() != 0 && tMap.get("mrd_no").toLowerCase(Locale.getDefault()).contains(charText)) {//mrd_no
TempArrList.add(tMap);
} else if (charText.length() != 0 && tMap.get("pname").toLowerCase(Locale.getDefault()).contains(charText)) {//pname
TempArrList.add(tMap);
} else if (charText.length() != 0 && tMap.get("bed_no").toLowerCase(Locale.getDefault()).contains(charText)) {
TempArrList.add(tMap);
} else if (charText.length() != 0 && tMap.get("nursingstation").toLowerCase(Locale.getDefault()).contains(charText)) {
TempArrList.add(tMap);
}
}
notifyDataSetChanged();
}
}
public View getView(int position, View convertView, ViewGroup parent) {
View viw = convertView;
if (convertView == null)
viw = inflater.inflate(R.layout.ip_ptn_items, null);
TextView txt_Mr_dno = (TextView) viw.findViewById(R.id.txtMrdno);
TextView txt_pitnt_Name = (TextView) viw.findViewById(R.id.txtpitntName);
TextView txt_Bed_no = (TextView) viw.findViewById(R.id.txtBedno);
TextView txt_Dob = (TextView) viw.findViewById(R.id.txtDob);
TextView txt_drNme = (TextView) viw.findViewById(R.id.txtDr);
TextView txt_Sex = (TextView) viw.findViewById(R.id.txtSex);
TextView txt_Wrdnm = (TextView) viw.findViewById(R.id.txtWrdnm);
HashMap<String, String> item = new HashMap<String, String>();
item = TempArrList.get(position);
String mrd_no = item.get(TAG_MRDNO);
item.put(TAG_MRDNO, mrd_no);
mrd_no = item.get(TAG_MRDNO);
if (mrd_no.endsWith("*")) {
txt_Mr_dno.setTextColor(Color.RED);
txt_pitnt_Name.setTextColor(Color.RED);
txt_Dob.setTextColor(Color.RED);
txt_Sex.setTextColor(Color.RED);
txt_Wrdnm.setTextColor(Color.RED);
txt_Bed_no.setTextColor(Color.RED);
} else {
txt_Mr_dno.setTextColor(Color.BLACK);
txt_pitnt_Name.setTextColor(Color.BLACK);
txt_Dob.setTextColor(Color.BLACK);
txt_Sex.setTextColor(Color.BLACK);
txt_Wrdnm.setTextColor(Color.BLUE);
txt_Bed_no.setTextColor(Color.BLUE);
}
//Setting all values in listview
txt_Mr_dno.setText(item.get("mrd_no"));
txt_pitnt_Name.setText(item.get("pname"));
txt_Bed_no.setText(item.get("bed_no"));
txt_Dob.setText(item.get("dob"));
//txt_admit_Date.setText(item.get("admission_date"));
txt_Sex.setText(item.get("sex"));
txt_Wrdnm.setText(item.get("nursingstation"));
txt_drNme.setText(item.get("doctor"));
// item = data.get(position);
/// String userType = item.get(TAG_UTYPE);
// item.put(TAG_UTYPE, mrd_no);
// userType = item.get(TAG_UTYPE);
try {
if (item.get("userType").equals("doctor")) {
txt_drNme.setVisibility(View.INVISIBLE);
} else {
txt_drNme.setVisibility(View.VISIBLE);
}
} catch (Exception e) {
e.printStackTrace();
}
return viw;
}
}
另一个是点击事件类：
public class AdmitPatientFragment extends Fragment implements FragmentCycle {
ListView lstViw;
AdmitPatientAdapter adapter;
String DcId = "";
String userType = "";
public static final String MyPREFERENCES = "MyPrefs";
SharedPreferences sharedPreferences;
// generic array list
ArrayList<HashMap<String, String>> dlst = new ArrayList<HashMap<String, String>>();
// json url
private static String url = "http://scanweb.dmhospital.org:81/amrita_login/AdmList.php?auth=Yes";
@Override
public void onResumeFragment() {
}
@Override
public void onPauseFragment() {
}
// json node names
private static final String TAG_ADMITLIST = "AdmissionList";
private static final String TAG_MRD = "mrd_no";
private static final String TAG_PNAME = "pname";
private static final String TAG_BNO = "bed_no";
private static final String TAG_DOB = "dob";
private static final String TAG_ADMIT_DATE = "admission_date";
private static final String TAG_DOCTOR = "doctor";
private static String TAG_SEX = "sex";
private static String TAG_PATN_ID = "patient_id";
private static String TAG_VISIT_ID = "visit_id";
private static final String TAG_WARD_NAME = "nursingstation";
public static final String TAG_UTYPE = "userType";
JSONArray AdmissionList = null;
public AdmitPatientFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
setReturnTransition(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
LinearLayout rootView = (LinearLayout) inflater.inflate(
R.layout.ip_ptn_lstviw, container, false);
dlst = new ArrayList<HashMap<String, String>>();
Intent intent = getActivity().getIntent();
DcId = intent.getStringExtra("drid");
if (CheckNetwork.isInternetAvailable(getActivity())) //returns true if internet available
{
} else {
Toast.makeText(getActivity(), "No Internet Connection", Toast.LENGTH_SHORT).show();
}
// to read doctor id from shared preferences
sharedPreferences = getActivity().getSharedPreferences(MyPREFERENCES,
Context.MODE_PRIVATE);
DcId = sharedPreferences.getString("drid", DcId);
userType = sharedPreferences.getString("usertype", userType);
url = url + "&docID=" + DcId;
new paAsyncTask().execute();
return rootView;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.three_dots_menu, menu);
super.onCreateOptionsMenu(menu, inflater);
final MenuItem searchItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
//*** setOnQueryTextFocusChangeListener ***
searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
}
});
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String searchQuery) {
adapter.filter(searchQuery.toString().trim());
lstViw.invalidate();
return true;
}
});
MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() {
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
// Do something when collapsed
return true; // Return true to collapse action view
}
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
// Do something when expanded
return true; // Return true to expand action view
}
});
}
private class paAsyncTask extends AsyncTask<String, String, JSONObject> {
ProgressDialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
try {
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Please wait admit patient list is loading ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected JSONObject doInBackground(String... params) {
JSONParser jParser = new JSONParser();
// Getting JSON from URL
JSONObject json = jParser.getJSONFromUrl(url);
return json;
}
@Override
protected void onPostExecute(JSONObject json) {
pDialog.dismiss();
try {
// Getting JSON Array from URL
AdmissionList = json.getJSONArray(TAG_ADMITLIST);
dlst = new ArrayList<HashMap<String, String>>();
for (int i = 0; i < AdmissionList.length(); i++) {
JSONObject c = AdmissionList.getJSONObject(i);
String admission_date = c.getString(TAG_ADMIT_DATE);
HashMap<String, String> map = new HashMap<String, String>();
String ageSex = "(" + c.getString(TAG_DOB) + " | " + c.getString(TAG_SEX) + ")";
String[] admDte = admission_date.split(":");
String[] admDte1 = admission_date.split(":");
String resultDte = admDte[0] + ":" + admDte1[1];
map.put(TAG_MRD, c.getString(TAG_MRD).toString());
map.put(TAG_PNAME, c.getString(TAG_PNAME));
map.put(TAG_BNO, c.getString(TAG_BNO));
map.put(TAG_DOB, ageSex);
map.put(TAG_ADMIT_DATE, resultDte);
map.put(TAG_UTYPE, userType);
map.put(TAG_DOCTOR, c.getString(TAG_DOCTOR).toString());
// map.put(TAG_SEX, str);
map.put(TAG_WARD_NAME, c.getString(TAG_WARD_NAME));
map.put(TAG_PATN_ID, c.getString(TAG_PATN_ID));
map.put(TAG_VISIT_ID, c.getString(TAG_VISIT_ID));
dlst.add(map);
}
lstViw = (ListView) getView().findViewById(R.id.lstAdmsion);
adapter = new AdmitPatientAdapter(getActivity(), dlst);
adapter.notifyDataSetChanged();
lstViw.setAdapter(adapter);
lstViw.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
HashMap<String, String> map = dlst.get(position);
Intent imp = new Intent(getActivity(),
NavigationDrawerActivity.class);
imp.putExtra("drid", DcId);
// imp.putExtra(TAG_ADMIT_DATE, map.get(""));
imp.putExtra("docNme", map.get(TAG_DOCTOR));
imp.putExtra("ptnId", map.get(TAG_PATN_ID));
imp.putExtra("vst_id", map.get(TAG_VISIT_ID));
startActivity(imp);
}
});
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
答案 0 :(得分：1)
尝试更改
HashMap<String, String> map = dlst.get(position);
到
HashMap<String, String> map = adapter.getItem(position);
基本上，OnItemClickListener是从ListView中获取对象而不是已更新引用的适配器......
编辑1：您还需要在适配器中实现getItem，以便从筛选列表中返回一个对象。我假设那是最好的......
因此，您需要将它放在适配器类中：
public HashMap<String, String> getItem(int position){
return dlst.get(position);
}