androidでデータベースを検索するときにtextviewをオートコンプリートする方法

Question

こんにちは、私はアンドロイドを新しくしています。辞書を作成しようとしていますが、私のアプリでautocompletetextviewを取得できません。私はデータベースを検索するときにdbの単語のオートコンプリートを取得する必要があります。私は何かを見つけることができないので、私は本当にいくつかの専門家の助けが必要です。事前のおかげで..

XML

<RelativeLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainSearch" > 

    <LinearLayout 
     android:id="@+id/linearLayout1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentTop="true" 
     android:background="#eee" 
     android:gravity="center_vertical|center_horizontal" 
     android:minHeight="80dp" 
     android:paddingBottom="10dp" 
     android:paddingTop="10dp" 
     android:textAlignment="center" > 

     <EditText 
      android:id="@+id/editText1" 
      style="@style/EditText.Style" 
      android:layout_width="0dip" 
      android:layout_weight="3" 
      android:layout_height="wrap_content" 
      android:hint="@string/hint" 
      android:inputType="text" > 

     </EditText> 

     <ImageView 
      android:id="@+id/imageButton" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginRight="1dip" 
      android:src="@drawable/ic_search_white_48dp" /> 

    </LinearLayout> 

    <RelativeLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/relativeLayout" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/linearLayout1" > 

     <ScrollView 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:layout_below="@+id/linearLayout1" 
      android:background="#fff" > 

      <LinearLayout 
       android:id="@+id/resultsLayout" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:orientation="vertical" 
       android:paddingTop="12dp" > 

      </LinearLayout> 

     </ScrollView> 

    </RelativeLayout> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentRight="true" 
     android:gravity="bottom|right" 
     android:orientation="horizontal" 
     android:padding="10dp" > 

     <ImageView 
      android:id="@+id/infoButton" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:src="@drawable/infoiconround" /> 
    </LinearLayout> 
</RelativeLayout> 

JAVA

public class MainSearch extends Activity { 
    private Button mBtnNew; 
    private static final String TAG = "OLAM LOGGER in MAIN"; 

    ProgressDialog pDialog; 
    LinearLayout resLayout; 
    LinearLayout layout; 

    LayoutParams params; 
    PopupWindow popUp; 

    ImageView logo; 
    TextView appDesc; 
    TextView appDescEn; 
    TextView aboutTitle; 
    TextView olamAuthor; 
    TextView just_a_new_line; 
    TextView olamUrl; 

    boolean click = true; 

    EditText editText; 

    Typeface tf; 
    DatabaseHelper dbHelper; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main_search); 

     resLayout = (LinearLayout) findViewById(R.id.resultsLayout); 
     tf = Typeface.createFromAsset(getBaseContext().getAssets(),"Meera.ttf"); 
     dbHelper = new DatabaseHelper(this);   
     ImageView button = (ImageView) findViewById(R.id.imageButton); 


     //Creating Olam database if not exist from DB file in Assets. 
     try { 
      Log.v(TAG, "Copying the database"); 
      dbHelper.createDatabase();   
     } 
     catch (IOException ioe) { 
      Log.v(TAG, "Unable to create database"); 
     } 

     //Opening the database for operation with search button 
     try { 
      dbHelper.openDatabase(); 

      button.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        editText = (EditText) findViewById(R.id.editText1); 
        String searchString = editText.getText().toString(); 

        if(searchString.trim().length() != 0 && !searchString.isEmpty()) { 
         resLayout.removeAllViews();     
         new doSearch().execute(); 
        } 
       } 
      }); 


     } 
     catch (SQLiteException sqle) { 
      throw sqle; 
     } 

     //Opening the database for operation with keyboard GO button 
     try { 
      dbHelper.openDatabase(); 
      editText = (EditText) findViewById(R.id.editText1); 
      editText.setOnEditorActionListener(new OnEditorActionListener() {   
       @Override 
       public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 
        if(actionId==EditorInfo.IME_ACTION_DONE){ 
         //do something 
         String searchString = editText.getText().toString(); 

         if(searchString.trim().length() != 0 && !searchString.isEmpty()) { 
          resLayout.removeAllViews();     
          new doSearch().execute(); 
         } 
        } 
       return false; 
       } 
      }); 
     } 
     catch (SQLiteException sqle) { 
      throw sqle; 
     } 


     // About info popup 
     layout = new LinearLayout(this); 
     logo = new ImageView(this); 
     popUp = new PopupWindow(this); 
     aboutTitle = new TextView(this); 
     appDesc = new TextView(this); 
     appDescEn = new TextView(this); 
     olamAuthor = new TextView(this); 
     just_a_new_line = new TextView(this); 
     olamUrl = new TextView(this); 

     layout.setOrientation(LinearLayout.VERTICAL); 
     layout.setBackgroundColor(Color.WHITE); 

     aboutTitle.setText(R.string.title);   
     aboutTitle.setTextSize(30); 
     aboutTitle.setTypeface(tf,Typeface.BOLD);   
     aboutTitle.setGravity(Gravity.CENTER_HORIZONTAL); 

     appDesc.setText(R.string.app_description);   
     appDesc.setTextSize(TypedValue.COMPLEX_UNIT_DIP,20); 
     appDesc.setTypeface(tf);   
     appDesc.setGravity(Gravity.CENTER_HORIZONTAL); 

     appDescEn.setText(R.string.app_description_english);   
     appDescEn.setTextSize(TypedValue.COMPLEX_UNIT_DIP,10); 
     appDescEn.setGravity(Gravity.CENTER_HORIZONTAL); 

     olamAuthor.setText(Html.fromHtml(getResources().getString(R.string.olam_author)));   
     olamAuthor.setTextSize(11);     
     olamAuthor.setMovementMethod(LinkMovementMethod.getInstance()); 
     olamAuthor.setGravity(Gravity.CENTER_HORIZONTAL); 

     just_a_new_line.setText(R.string.just_a_new_line);   
     just_a_new_line.setTextSize(10);     
     just_a_new_line.setMovementMethod(LinkMovementMethod.getInstance()); 
     just_a_new_line.setGravity(Gravity.LEFT); 

     olamUrl.setText(Html.fromHtml(getResources().getString(R.string.olam_url)));   
     olamUrl.setTextSize(13);   
     olamUrl.setMovementMethod(LinkMovementMethod.getInstance()); 
     olamUrl.setGravity(Gravity.CENTER_HORIZONTAL); 

     layout.addView(aboutTitle); 
     layout.addView(appDesc); 
     layout.addView(appDescEn); 
     layout.addView(olamAuthor); 
     layout.addView(just_a_new_line); 
     layout.addView(olamUrl); 
     layout.setBackgroundResource(drawable.popupbox); 

     popUp.setBackgroundDrawable(new BitmapDrawable());   
     popUp.setOutsideTouchable(true);  
     popUp.setContentView(layout); 

     ImageView infoButton = (ImageView) findViewById(R.id.infoButton); 
     infoButton.setOnClickListener(new View.OnClickListener() {  
      @Override 
      public void onClick(View v) { 
       if(click){ 
        popUp.showAtLocation(v, Gravity.CENTER, 10, 10); 
        popUp.update(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
        click = false; 
       } 
       else { 
        popUp.dismiss(); 
        click = true; 
       } 

      } 
     }); 

     //about window end 

    } 

    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
     // Override back button 
     if (keyCode == KeyEvent.KEYCODE_BACK) { 
      if (popUp.isShowing()) { 
       popUp.dismiss(); 
       return false; 
      } 
     } 
     return super.onKeyDown(keyCode, event); 
    } 

    //searching done as an async task 

    class doSearch extends AsyncTask<String, String, String> { 

     String searchString; 
     Map<String, String> matches; 
     Map<String, ArrayList<Map<String, String>>> results = new HashMap<String, ArrayList<Map<String, String>>>(); 

     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(MainSearch.this); 
      pDialog.setMessage(Html.fromHtml("<b>I am looking...........</b>")); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(false); 
      pDialog.show(); 
     } 

     @Override 
     protected String doInBackground(String... params) { 
      // TODO Auto-generated method stub 
      EditText editText = (EditText) findViewById(R.id.editText1); 
      searchString = editText.getText().toString(); 

      //Logic for cancelling out apostrophe from entered query. 
      if (searchString.contains("'")) { 

       /* 
       temp is a StringBuilder used to store searchString after filtering out 
       apostrophe. 
       */ 
       StringBuilder temp = new StringBuilder(); 
       for (char c : searchString.toCharArray()) { 
        if (c != '\'') 
         temp.append(c); 
       } 
       searchString = temp.toString(); 
       if (searchString.trim().equals("")) 
        searchString = ":"; 
      } 

      Log.v(TAG, searchString); 
      if(searchString != null && !searchString.isEmpty()) {    
       Stemmer stem = new Stemmer();    
       String stems = stem.completeStem(searchString.toLowerCase()); 
       Log.v("Stemmer Tag", stems);     
       matches = dbHelper.getSimilarStems(stems);    

       // 
       if(!matches.isEmpty()) { 

        String[] resultIDs = new String[matches.size()]; 
        int i=0; 

        for (Map.Entry<String, String> entry : matches.entrySet()) {       
          String resultID = entry.getKey(); 
          String word = entry.getValue();      
          resultIDs[i] = resultID; 
          i++;        
        } 

        results = dbHelper.getDefinitions(resultIDs);  

        Log.v("List Map Tag", "List Map created"); 

        //results = dbHelper.searchDatabase(stems);    
        Log.v(TAG, "Search Results Got back");    
       } 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(String file_url) { 
      pDialog.dismiss();  
      Log.v(TAG, "Dismissed Progress Dialog"); 
      renderResults(); 
     } 

     protected void renderResults(){ 

      int i=1; 

      if(matches.isEmpty()) { 
       TextView sorryMsg = new TextView(MainSearch.this); 
       TextView addUrl = new TextView(MainSearch.this); 

       sorryMsg.setText(R.string.sorry_not_found); 
       sorryMsg.setPadding(30, 15, 30, 0); 
       sorryMsg.setGravity(Gravity.CENTER); 
       sorryMsg.setTypeface(tf, Typeface.BOLD); 
       sorryMsg.setTextSize(18); 
       resLayout.addView(sorryMsg); 

       addUrl.setText(Html.fromHtml("")); 
       addUrl.setPadding(30, 15, 30, 0); 
       addUrl.setGravity(Gravity.CENTER); 
       addUrl.setTypeface(null, Typeface.BOLD); 
       addUrl.setTextSize(18); 
       addUrl.setMovementMethod(LinkMovementMethod.getInstance()); 
       resLayout.addView(addUrl); 
      } 
      else { 

        for (Map.Entry<String, String> entry : matches.entrySet()) {      
         String wordID = entry.getKey(); 
         String word = entry.getValue(); 

         TextView title = new TextView(MainSearch.this);   
         title.setText(i+". "+word);   
         title.setPadding(50, 20, 0, 0); 
         title.setTextSize(16);   
         title.setTypeface(null, Typeface.BOLD); 
         resLayout.addView(title); 
         i++; 
         int nounFlag = 0;  
         int verbFlag = 0; 
         int adjFlag = 0; 

         ArrayList<Map<String, String>> res = results.get(wordID);      

         for(Map<String,String> mapIt : res) { 


          LinearLayout nounLayout; 
           nounLayout = new LinearLayout(MainSearch.this); 
           nounLayout.setOrientation(LinearLayout.VERTICAL); 
           nounLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); 

          LinearLayout verbLayout; 
           verbLayout = new LinearLayout(MainSearch.this);         
           verbLayout.setOrientation(LinearLayout.VERTICAL); 
           verbLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); 

          LinearLayout adjLayout; 
           adjLayout = new LinearLayout(MainSearch.this);         
           adjLayout.setOrientation(LinearLayout.VERTICAL); 
           adjLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); 

          LinearLayout generalLayout; 
           generalLayout = new LinearLayout(MainSearch.this);         
           generalLayout.setOrientation(LinearLayout.VERTICAL); 
           generalLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); 

          for (Map.Entry<String, String> resultMap : mapIt.entrySet()) { 
           String meaning = resultMap.getKey(); 
           String type = resultMap.getValue(); 



           if(type.equals("n")) //if equals a noun 
           { 
            Log.v(TAG, "Noun"); 
            TextView temp = new TextView(MainSearch.this); 
            if(nounFlag==0) {      

             TextView typeView = new TextView(MainSearch.this); 
             typeView.setText(R.string.noun); 
             typeView.setTypeface(tf, Typeface.ITALIC); 
             typeView.setTextSize(15); 
             typeView.setTextColor(Color.GRAY); 
             typeView.setPadding(90, 15, 15, 0); 
             nounLayout.addView(typeView); 

             meaning = meaning; 
             temp.setText(meaning); 
             typeView.setTextColor(Color.RED); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             nounLayout.addView(temp); 
             nounFlag=1; 
            } 
            else { 
             meaning = " "+meaning; 
             temp.setText(meaning); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             nounLayout.addView(temp); 
            } 
           } 
           else if(type.equals("v")) //if equals a verb 
           { 
            Log.v(TAG,"Verb");  
            TextView temp = new TextView(MainSearch.this); 

            if(verbFlag==0) { 
             TextView typeView = new TextView(MainSearch.this); 
             typeView.setText(R.string.verb); 
             typeView.setTypeface(tf, Typeface.ITALIC); 
             typeView.setTextColor(Color.GRAY); 
             typeView.setTextSize(15); 
             typeView.setPadding(90, 15, 15, 0); 
             verbLayout.addView(typeView); 

             meaning = ""+meaning; 
             temp.setText(meaning); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             verbLayout.addView(temp); 
             verbFlag=1; 
            } 
            else { 
             meaning = ""+meaning; 
             temp.setText(meaning); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             verbLayout.addView(temp); 
            } 
           } 
           else if(type.equals("a")) //if equals an adjective 
           { 
            Log.v(TAG,"Adjective");  
            TextView temp = new TextView(MainSearch.this); 

            if(adjFlag==0) { 
             TextView typeView = new TextView(MainSearch.this); 
             typeView.setText(R.string.adjective); 
             typeView.setTypeface(tf, Typeface.ITALIC); 
             typeView.setTextColor(Color.GRAY); 
             typeView.setTextSize(15); 
             typeView.setPadding(90, 15, 15, 0); 
             adjLayout.addView(typeView); 

             meaning = meaning; 
             temp.setText(meaning); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             adjLayout.addView(temp); 
             adjFlag=1; 
            } 
            else { 
             meaning = meaning; 
             temp.setText(meaning); 
             temp.setPadding(100, 15, 15, 0);           
             temp.setTypeface(tf); 
             temp.setTextSize(19); 
             adjLayout.addView(temp); 
            } 
           } 
           else { //if equals everything else 
            TextView temp = new TextView(MainSearch.this); 
            meaning = meaning; 
            temp.setText(meaning); 
            temp.setPadding(100, 15, 15, 0);           
            temp.setTypeface(tf); 
            temp.setTextSize(19); 
            generalLayout.addView(temp); 
           } 

           resLayout.addView(nounLayout); 
           resLayout.addView(verbLayout); 
           resLayout.addView(adjLayout); 
           resLayout.addView(generalLayout); 


          } 


         } 
        } 

      } 

     } 
    } 

} 

Answer 1

それはあなた

public class MainActivity extends Activity { 


    CustomAutoCompleteView myAutoComplete; 

    // adapter for auto-complete 
    ArrayAdapter<String> myAdapter; 

    // for database operations 
    DatabaseHandler databaseH; 

    // just to add some initial value 
    String[] item = new String[] {"Please search..."}; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     try{ 

      // instantiate database handler 
      databaseH = new DatabaseHandler(MainActivity.this); 

      // put sample data to database 
      insertSampleData(); 

      // autocompletetextview is in activity_main.xml 
      myAutoComplete = (CustomAutoCompleteView) findViewById(R.id.myautocomplete); 

      // add the listener so it will tries to suggest while the user types 
      myAutoComplete.addTextChangedListener(new CustomAutoCompleteTextChangedListener(this)); 

      // set our adapter 
      myAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, item); 
      myAutoComplete.setAdapter(myAdapter); 

     } catch (NullPointerException e) { 
      e.printStackTrace(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 

    public void insertSampleData(){ 

     // CREATE 
     databaseH.create(new MyObject("January")); 
     databaseH.create(new MyObject("February")); 
     databaseH.create(new MyObject("March")); 
     databaseH.create(new MyObject("April")); 
     databaseH.create(new MyObject("May")); 
     databaseH.create(new MyObject("June")); 
     databaseH.create(new MyObject("July")); 
     databaseH.create(new MyObject("August")); 
     databaseH.create(new MyObject("September")); 
     databaseH.create(new MyObject("October")); 
     databaseH.create(new MyObject("November")); 
     databaseH.create(new MyObject("December")); 
     databaseH.create(new MyObject("New Caledonia")); 
     databaseH.create(new MyObject("New Zealand")); 
     databaseH.create(new MyObject("Papua New Guinea")); 
     databaseH.create(new MyObject("COFFEE-1K")); 
     databaseH.create(new MyObject("coffee raw")); 
     databaseH.create(new MyObject("authentic COFFEE")); 
     databaseH.create(new MyObject("k12-coffee")); 
     databaseH.create(new MyObject("view coffee")); 
     databaseH.create(new MyObject("Indian-coffee-two")); 

    } 

    // this function is used in CustomAutoCompleteTextChangedListener.java 
    public String[] getItemsFromDb(String searchTerm){ 

     // add items on the array dynamically 
     List<MyObject> products = databaseH.read(searchTerm); 
     int rowCount = products.size(); 

     String[] item = new String[rowCount]; 
     int x = 0; 

     for (MyObject record : products) { 

      item[x] = record.objectName; 
      x++; 
     } 

     return item; 
    } 

} 

https://www.codeofaninja.com/2013/11/android-autocompletetextview-example-sqlite-database.html

0のために動作します。この方法を試してみてください

http://sampleprogramz.com/android/autocompletetextview.php