在自定義ListView中顯示SQLite數據

Question

我試圖將SQLite中的數據顯示爲自定義ListView。我得到的數據，我可以顯示它到ListView，但我有一個問題。

每當我滾動到ListView的最後一個數據時，它總是出錯。它說的ArrayIndexOutOfBoundsException。我已經在搜索它，但仍找不到解決方案。

所以我想問的是，如何解決這個錯誤，或者是否有另一種方法可以用來顯示ListView中的數據？

這裏是我的DatabaseHandler.java

// Getting All search result 
public List<AllItem> getAllSearchResult(String searchResult) { 
    List<AllItem> allsearchResultList = new ArrayList<AllItem>(); 
    // Select All Query 
    String selectQuery = "SELECT * FROM " + TABLE_ALLITEM + " WHERE " + KEY_ITEM_NAME_ALLITEM + " LIKE '%"+searchResult+"%' "; 

    SQLiteDatabase db = this.getWritableDatabase(); 
    Cursor cursor = db.rawQuery(selectQuery, null); 

    // looping through all rows and adding to list 
    if (cursor.moveToFirst()) { 
     do { 
      AllItem allitem = new AllItem(); 
      allitem.setTableID(cursor.getInt(0)); 
      allitem.setID(cursor.getString(1)); 
      allitem.setCategory_name(cursor.getString(2)); 
      allitem.setItem_Name(cursor.getString(3)); 

      allitem.setDescription(cursor.getString(4)); 
      allitem.setAddress(cursor.getString(5)); 
      allitem.setArea (cursor.getString(6)); 
      allitem.setAreaName (cursor.getString(7)); 

      // Adding searchResult to list 
      allsearchResultList.add(allitem); 
     } while (cursor.moveToNext()); 
    } 

    // return searchResult list 
    return allsearchResultList; 
} 

這裏是我的Search.java

Intent search = getIntent(); 
    String searchResult = search.getStringExtra("TAG_SEARCH"); 
    DatabaseHandler db = new DatabaseHandler(this); 

    //Cursor mCur = (Cursor) db.getAllSearchResults(searchResult); 

    //CurAdapter Cur = new CurAdapter(Search.this, mCur,0); 
    //final ListView lv = (ListView)findViewById(R.id.listSearch); 
    //lv.setFastScrollEnabled(true); 
    //lv.setAdapter(Cur); 

    /** 
    * CRUD Operations 
    * */ 
    Log.d("Reading: ", "Reading all contacts.."); 
    List <AllItem> allItems = new ArrayList<AllItem>(); 


    allItems = db.getAllSearchResult(searchResult); 


    ArrayList <String> allItems2 = new ArrayList<String>(); 
    for (AllItem cn : allItems) { 
     allItems2.add(cn.getItem_name()); 
     allItems2.add(cn.getAreaNAme()); 
     allItems2.add(cn.getCategory_name()); 
    } 


    CustomAdapterSearch adapter = new CustomAdapterSearch(Search.this, allItems2); 
    listview.setAdapter(adapter); 

這是我的CustomAdapter.java

public class CustomAdapterSearch extends ArrayAdapter<String> { 

private final Activity context; 
private final List<String> items; 

public CustomAdapterSearch (Activity context, List<String> items) { 

    super(context, R.layout.searchlayout, items); 
    this.context = context; 
    this.items = items; 
} 

@Override 
public View getView (final int position, View view, ViewGroup parent) 
{ 

    LayoutInflater inflater = context.getLayoutInflater(); 
    View rowView = inflater.inflate(R.layout.searchlayout, null, true); 

    TextView itemName = (TextView) rowView.findViewById(R.id.item_name); 
    TextView areaName = (TextView) rowView.findViewById(R.id.area_name); 
    TextView priceCatergory = (TextView) rowView.findViewById(R.id.price_category); 

    itemName.setText(items.get(3*position)); 
    areaName.setText(items.get(3*position + 1)); 
    priceCatergory.setText(items.get(3*position + 2)); 

    return rowView; 

} 

}

有沒有人可以幫助我？由於前：d

Answer 1

Search.java

Intent search = getIntent(); 
    String searchResult = search.getStringExtra("TAG_SEARCH"); 
    DatabaseHandler db = new DatabaseHandler(this); 


    Log.d("Reading: ", "Reading all contacts.."); 
    List <AllItem> allItems = new ArrayList<AllItem>(); 


    allItems = db.getAllSearchResult(searchResult); 

    CustomAdapterSearch adapter = new CustomAdapterSearch(Search.this, allItems); 
    listview.setAdapter(adapter); 



public class CustomAdapterSearch extends ArrayAdapter<AllItem> { 

private final Activity context; 
private final List<AllItem> items; 

public CustomAdapterSearch (Activity context, List<AllItem> items) { 

    super(context, R.layout.searchlayout, items); 
    this.context = context; 
    this.items = items; 
} 

@Override 
public View getView (final int position, View view, ViewGroup parent) 
{ 

    LayoutInflater inflater = context.getLayoutInflater(); 
    View rowView = inflater.inflate(R.layout.searchlayout, null, true); 

    TextView itemName = (TextView) rowView.findViewById(R.id.item_name); 
    TextView areaName = (TextView) rowView.findViewById(R.id.area_name); 
    TextView priceCatergory = (TextView) rowView.findViewById(R.id.price_category); 

    itemName.setText(items.get(position)); // there must be property of class AllItem add them after get method 
    areaName.setText(items.get(position)); 
    priceCatergory.setText(items.get(position)); 

    return rowView; 

} 

Answer 2

你在做錯誤的，當轉換將光標移至AllItem

使用的CursorAdapter和可濾接口來篩選結果

Answer 3

使用Search.java推薦人：Android全國聯保

Intent search = getIntent(); 
String searchResult = search.getStringExtra("TAG_SEARCH"); 
DatabaseHandler db = new DatabaseHandler(this); 

/** 
* CRUD Operations 
* */ 
Log.d("Reading: ", "Reading all contacts.."); 
List <AllItem> allItems = new ArrayList<AllItem>(); 

allItems = db.getAllSearchResult(searchResult); 

CustomAdapterSearch adapter = new CustomAdapterSearch(Search.this, allItems); 
listview.setAdapter(adapter); 

現在使用AllItem類傳入CustomAdapter.java

public class CustomAdapterSearch extends ArrayAdapter<AllItem> { 

    private final Activity context; 
    private final List<AllItem> items; 

    public CustomAdapterSearch (Activity context, List<AllItem> items) { 

     super(context, R.layout.searchlayout, items); 
     this.context = context; 
     this.items = items; 
    } 

    @Override 
    public View getView (final int position, View view, ViewGroup parent) { 

     LayoutInflater inflater = context.getLayoutInflater(); 
     View rowView = inflater.inflate(R.layout.searchlayout, null, true); 

     TextView itemName = (TextView) rowView.findViewById(R.id.item_name); 
     TextView areaName = (TextView) rowView.findViewById(R.id.area_name); 
     TextView priceCatergory = (TextView) rowView.findViewById(R.id.price_category); 

     itemName.setText(items.get(position).getItem_name()); 
     areaName.setText(items.get(position).getAreaNAme()); 
     priceCatergory.setText(items.get(position).getCategory_name()); 

     return rowView; 

    } 
}