SearchView返回舊的ListView位置值Android

Question

我正面臨一個問題。就像我在SearchView中輸入數據時一樣，新數據過濾並顯示在ListView中。但是當我從這個過濾的listview中選擇一個條目時，它會根據之前的ListView（即未過濾的數據）的位置返回數據。下面我發佈了我的代碼。請通過它並幫助我。謝謝。

CustomAdapter.java

import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.Filterable; 
import android.widget.TextView; 

import java.util.ArrayList; 

import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.TextView; 

import java.util.ArrayList; 
import java.util.logging.Filter; 

public class CustomAdapter extends ArrayAdapter <State> implements Filterable { 
int groupid; 
ArrayList <State> records; 
ArrayList <State> filterRecords; 
CustomFilter filter; 
Context context; 
public CustomAdapter(Context context, int vg, int id, ArrayList <State> 
    records) { 
    super(context, vg, id, records); 
    this.context = context; 
    groupid = vg; 
    this.records = records; 
    this.filterRecords = records; 
} 
@Override 
public int getCount() { 
    return records.size(); 
} 
@Override 
public State getItem(int position) { 
    return records.get(position); 
} 
@Override 
public long getItemId(int position) { 
    return records.indexOf(getItem(position)); 
} 
@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    View itemView = inflater.inflate(groupid, parent, false); 
    TextView textName = (TextView) itemView.findViewById(R.id.state_name); 
    textName.setText(records.get(position).getpName()); 
    return itemView; 
} 
@Override 
public android.widget.Filter getFilter() { 
    if (filter == null) { 
    filter = new CustomFilter(); 
    } 
    return filter; 
} 

class CustomFilter extends android.widget.Filter { 
    @Override 
    protected FilterResults performFiltering(CharSequence constraint) { 
    FilterResults results = new FilterResults(); 
    if (constraint != null && constraint.length() > 0) { 
    //constraint to upper 
    constraint = constraint.toString().toUpperCase(); 
    ArrayList <State> filters = new ArrayList <State>(); 

    for (int i = 0; i < filterRecords.size(); i++) { 
    if (filterRecords.get(i).getpName().toUpperCase().contains(constraint)) { 
     State p = new State(filterRecords.get(i).getpName()); 
     //p.setpName(filterRecords.get(i).getpName()); 
     filters.add(p); 

    } 

    } 
    results.count = filters.size(); 
    results.values = filters; 
    } else { 
    results.count = filterRecords.size(); 
    results.values = filterRecords; 
    } 
    return results; 
    } 
    @Override 
    protected void publishResults(CharSequence constraint, FilterResults results) { 
    records = (ArrayList <State>) results.values; 
    notifyDataSetChanged(); 
    } 
} 
} 

類爲返回數據 State.java

public class State { 
    private String pName; 
    public State(String pName) 
    { 
     this.pName=pName; 
    } 
    public void setpName(String pName){this.pName=pName;} 
    public String getpName(){return pName;} 
} 

StateDetail.java類

public class StateDetail extends AppCompatActivity { 
String[] items; 
CustomAdapter adapter4; 
ListView listProduct; 
ArrayList <State> records; 
ArrayList <State> FilteredState; 
Activity context; 
ProgressDialog pd; 
SearchView SVstate; 
String sText = null; 
public ListView getState1() { 
    listProduct.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView <?> parent, View view, int position, long id) { 

    String selected = records.get(position).getpName(); 
    Intent i = new Intent(getApplicationContext(), Search.class); 
    i.putExtra("fld_state_name", selected); 
    setResult(RESULT_OK, i); 
    finish(); 
    }); 
    return null; 
    } 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_state_detail); 
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 

    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
    context = this; 
    records = new ArrayList <State>(); 
    FilteredState = new ArrayList <State>(); 
    listProduct = (ListView) findViewById(R.id.StateList); 

    adapter4 = new CustomAdapter(context, R.layout.state_listview, R.id.state_name, 
    records); 
    listProduct.setAdapter(adapter4); 
    SVstate = (SearchView) findViewById(R.id.SVState); 
    SVstate.setQueryHint("Search...."); 
    int id = SVstate.getContext().getResources().getIdentifier("android:id/search_src_text", null, null); 
    TextView textView = (TextView) SVstate.findViewById(id); 
    textView.setTextColor(Color.BLACK); 
    SVstate.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 
    @Override 
    public boolean onQueryTextSubmit(String text) { 
    return false; 
    } 
    @Override 
    public boolean onQueryTextChange(String text) { 
    adapter4.getFilter().filter(text); 
    //adapter4.notifyDataSetChanged(); //notify the ListView to get new records 
    return false; 
    } 
    }); 
    } 
    class BackTask extends AsyncTask < String, Void, String > { 
    String textSearch; 
    @Override 
    protected String doInBackground(String...param) { 
    { 
    InputStream is = null; 
    String result = ""; 
    try { 
     HttpClient httpClient = new DefaultHttpClient(); 
     HttpPost httpPost = new HttpPost("http://10.0.2.2/getState.php"); 
     HttpResponse response = httpClient.execute(httpPost); 
     HttpEntity entity = response.getEntity(); 
    } catch (Exception e) { 
     if (pd != null) 
     pd.dismiss(); //close the dialog if error occurs 
     Log.e("ERROR", e.getMessage()); 
    } 
    //convert response to string 
    try { 
     BufferedReader reader = new BufferedReader(new InputStreamReader(is, "utf-8"), 8); 
     StringBuilder sb = new StringBuilder(); 
     String line = null; 
     while ((line = reader.readLine()) != null) { 
     sb.append(line + "\n"); 
     } 
     is.close(); 
     result = sb.toString(); 
    } catch (Exception e) { 
     Log.e("ERROR", "Error converting result " + e.toString()); 
    } 
    //parse json data 
    try { 
     // Remove unexpected characters that might be added to beginning of the 
     result = result.substring(result.indexOf("[")); 
     JSONArray jArray = new JSONArray(result); 
     for (int i = 0; i < jArray.length(); i++) { 
     JSONObject json_data = jArray.getJSONObject(i); 
     State p = new State(json_data.getString("fld_state_name")); 
     // p.setpName(json_data.getString("fld_state_name")); 
     records.add(p); 
     for (int j = 0; j < records.size(); j++) { 
     if (records.get(j).getpName().equals(p.getpName())) { 
     String matchFound = "Y"; 
     // Filiter 
     } 
     } 
     } 
     getState1(); 
    } catch (Exception e) { 
     Log.e("ERROR", "Error passing data " + e.toString()); 
    } 
    return null; 
    } 
    } 
    protected void onPreExecute() { 
    super.onPreExecute(); 
    pd = new ProgressDialog(context); 
    pd.setTitle("Retrieving data"); 
    pd.setMessage("Please wait."); 
    pd.setCancelable(true); 
    pd.setIndeterminate(true); 
    pd.show(); 
    } 
    protected void onPostExecute(Void result) { 
    if (pd != null) pd.dismiss(); //close dialog 
    Log.e("size", records.size() + ""); 
    adapter4.notifyDataSetChanged(); //notify the ListView to get new records 
    } 
    } 
    public void onStart() { 
    super.onStart(); 
    BackTask bt = new BackTask(); 
    bt.execute(); 
    } 
} 

Answer 1

您應該從篩選列表或適配器視圖中獲取數據。記錄

String selected = adapterView.getAdapter().get(position).getpName(); 
Intent i = new Intent(getApplicationContext(), Search.class); 
i.putExtra("fld_state_name", selected); 
setResult(RESULT_OK, i); 
finish();