なぜsqliteデータベースから読み込まれたリストビューが機能しないのですか？

Question

私はアプリケーションを実行すると、データベースからlistviewが読み込まれ、それは問題ありませんが、私がedittextに書き込んだ内容に基づいてアダプタをフィルタリングしたいときは、何も起こりません.logcatには何もありません。

import android.content.Intent; 
import android.database.Cursor; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.support.v4.app.ListFragment; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.LinearLayout; 
import android.widget.ListView; 

import java.util.ArrayList; 

public class Search extends ListFragment implements TextWatcher { 
    Adapter adapter; 
    ArrayList<Item> myList = new ArrayList<Item>(); 
    ListView myListView; 
    Databasehelper myDbHelper; 
    LinearLayout not_found; 
    EditText edtSeach; 
    Button searchbtn; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View v = inflater.inflate(R.layout.search, container, false); 
     edtSeach = (EditText) v.findViewById(R.id.calc_txt_Prise); 
     edtSeach.addTextChangedListener(this); 
     searchbtn = (Button) v.findViewById(R.id.searchbtn); 
     not_found = (LinearLayout) v.findViewById(R.id.layout_not_found); 
     return v; 
    } 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     myDbHelper = new Databasehelper(getActivity()); 
     myDbHelper.openDatabase(); 
     Cursor cursor = myDbHelper.QueryData("select * from zankodict"); 
     if (cursor != null) { 
      if (cursor.moveToFirst()) { 
       do { 
        Item itemm = new Item(); 
        itemm.setId(cursor.getString(0)); 
        itemm.setEng(cursor.getString(1)); 
        itemm.setKurd(cursor.getString(2)); 
        itemm.setAr(cursor.getString(3)); 
        itemm.setFa(cursor.getString(4)); 
        itemm.setTr(cursor.getString(5)); 
        myList.add(itemm); 
       } while (cursor.moveToNext()); 
      } 

      adapter = new Adapter(getActivity(), R.layout.single_row, myList); 
      myListView = getListView(); 
      myListView.setAdapter(adapter); 
      adapter.notifyDataSetChanged(); 
      myDbHelper.closeDataBase(); 
      myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
       @Override 
       public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
        String localObject0 = Search.this.myList.get(position).getId(); 
        String localObject1 = Search.this.myList.get(position).getEng(); 
        String localObject2 = Search.this.myList.get(position).getKurd(); 
        String localObject3 = Search.this.myList.get(position).getAr(); 
        String localObject4 = Search.this.myList.get(position).getFa(); 
        String localObject5 = Search.this.myList.get(position).getTr(); 
        myDbHelper.openDatabase(); 
        myDbHelper.insertRow2(localObject0, localObject1, localObject2, localObject3,localObject4,localObject5); 
        myDbHelper.closeDataBase(); 
        Intent localIntent; 
        localIntent = new Intent(getActivity().getBaseContext(), MyResults.class); 
        localIntent.putExtra("enG", localObject1); 
        localIntent.putExtra("kurD", localObject2); 
        localIntent.putExtra("aR", localObject3); 
        getActivity().startActivity(localIntent); 
       } 
      }); 
     } 
     searchbtn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       MyTask searchAsyn = new MyTask(); 
       searchAsyn.cancel(true); 
       searchAsyn.execute("seachdb",edtSeach.getText().toString()); 
      } 
     }); 
    } 


    @Override 
    public void beforeTextChanged(CharSequence s, int start, int count, int after) { 

    } 

    @Override 
    public void onTextChanged(CharSequence s, int start, int before, int count) { 
     MyTask searchAsyn = new MyTask(); 
     searchAsyn.cancel(true); 
     searchAsyn.execute("seachdb",s.toString()); } 

    @Override 
    public void afterTextChanged(Editable s) { 

    } 

    class MyTask extends AsyncTask<String,Void,ArrayList<Item>> { 
     ArrayList<Item> fillarary; 
     @Override 
     protected ArrayList<Item> doInBackground(String... params) { 
      String searchwd = params[1]; 
      String methods = params[0]; 
      if(methods.equals("seachdb")){ 
       fillarary = fillList(searchwd); 
      } 
      return fillarary; 
     } 

     @Override 
     protected void onPreExecute() { 
     } 

     @Override 
     protected void onPostExecute(ArrayList<Item> fill) { 
      myListView.setAdapter(new Adapter(getActivity(), R.layout.single_row, fill)); 
      validateItemCount(); 
     } 
     public ArrayList<Item> search (String keyword){ 
      ArrayList<Item> searcharray = null; 
      myDbHelper.openDatabase(); 
      Cursor cursor2 = myDbHelper.QueryData("select * from zankodict WHERE eng LIKE '%"+ keyword + "%'"); 
      if (cursor2 != null) { 
       if (cursor2.moveToFirst()) { 
        do { 
         Item itemm = new Item(); 
         itemm.setId(cursor2.getString(0)); 
         itemm.setEng(cursor2.getString(1)); 
         itemm.setKurd(cursor2.getString(2)); 
         itemm.setAr(cursor2.getString(3)); 
         itemm.setFa(cursor2.getString(4)); 
         itemm.setTr(cursor2.getString(5)); 
         searcharray.add(itemm); 
        } while (cursor2.moveToNext()); 
       } 
      } 
      return searcharray; 
     } 
     private ArrayList<Item> fillList(String keyword) { 
      ArrayList<Item> newarray; 
      if (keyword.equals(BuildConfig.FLAVOR)) { 
       newarray = new ArrayList(); 
      } else if (keyword.toCharArray().length < 2) { 
       newarray = search(keyword); 
      } else { 
       newarray = search(keyword); 
      } 
      return newarray; 
     } 
     private void validateItemCount() { 
      if (fillarary.size() == 0) { 
       not_found.setVisibility(View.VISIBLE); 
      } else { 
       not_found.setVisibility(View.INVISIBLE); 
      } 
     } 

    } 

} 

Answer 1

アダプタは、myListという名前のArrayListを使用して初期化されます。 一度あなたが検索関数呼び出し内の値「searcharray」を取得した後、この、

myList = searcharray; 
adapter.notifyDataSetChanged(); 

これは、検索結果を使用してリストビューにある値を更新します。