實現搜索裏面片段

嘿，大家好我試圖建成一個片段列表視圖列表視圖來實現搜索功能工作正常，但是當我在EditText上鍵入要搜索消失實現搜索裏面片段

我的代碼：

public class DrinksFragment extends Fragment { 

    private View rootView; 
    private ArrayAdapter<DrinksList> adapter; 
    private List<DrinksList> drinks; 
    private ListView lv; 
    ArrayList<DrinksList> mAllData; 
    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false); 
     populateDrinksList(); 
     doSearch(); 
     return rootView; 
    } 

    private void doSearch() { 
     final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks); 
     et.addTextChangedListener(new TextWatcher() { 
      @Override 
      public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
      } 

      @Override 
      public void onTextChanged(CharSequence s, int start, int before, int count) { 

      } 

      @Override 
      public void afterTextChanged(Editable s) { 
       String text = et.getText().toString().toLowerCase(Locale.getDefault()); 
      adapter.filter(text); 
      } 
     }); 
    } 



    private void populateDrinksList() { 
     drinks = new ArrayList<DrinksList>(); 
     drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50)); 
     drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50)); 
     drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50)); 
     drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50)); 
     drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50)); 
     drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50)); 
     drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00)); 
     drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00)); 
     drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50)); 
     lv = (ListView)rootView.findViewById(R.id.drinksListView); 
     adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(), R.layout.list_item, drinks); 
     lv.setAdapter(adapter); 
    } 

}public class DrinksFragment extends Fragment { 

    private View rootView; 
    private ArrayAdapter<DrinksList> adapter; 
    private List<DrinksList> drinks; 
    private ListView lv; 
    ArrayList<DrinksList> mAllData; 
    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false); 
     populateDrinksList(); 
     doSearch(); 
     return rootView; 
    } 

    private void doSearch() { 
     final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks); 
     et.addTextChangedListener(new TextWatcher() { 
      @Override 
      public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
      } 

      @Override 
      public void onTextChanged(CharSequence s, int start, int before, int count) { 
       DrinksFragment.this.adapter.getFilter().filter(s); 
      } 

      @Override 
      public void afterTextChanged(Editable s) { 

      } 
     }); 
    } 



    private void populateDrinksList() { 
     drinks = new ArrayList<DrinksList>(); 
     drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50)); 
     drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50)); 
     drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50)); 
     drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50)); 
     drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50)); 
     drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50)); 
     drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00)); 
     drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00)); 
     drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50)); 
     lv = (ListView)rootView.findViewById(R.id.drinksListView); 
     adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(), R.layout.list_item, drinks); 
     lv.setAdapter(adapter); 
    } 

}

我的適配器：

public class MyCustomDrinksListAdapter extends ArrayAdapter<DrinksList> { 


    private List<DrinksList> items = null; 
    private ArrayList<DrinksList> arraylist; 
    public MyCustomDrinksListAdapter(Context context, int layoutId, List<DrinksList> items) { 
     super(context, layoutId, items); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View arrayView = convertView; 
     if(arrayView == null){ 
      LayoutInflater vi; 
      vi = LayoutInflater.from(getContext()); 
      arrayView = vi.inflate(R.layout.list_item, parent, false); 
     } 

     DrinksList currentPosition = getItem(position); 
     if(currentPosition != null){ 
      ImageView image = (ImageView)arrayView.findViewById(R.id.product_image_coffee); 
      image.setImageResource(currentPosition.getImage()); 

      TextView name = (TextView)arrayView.findViewById(R.id.product_name_coffee); 
      name.setText(currentPosition.getName()); 

      TextView price = (TextView)arrayView.findViewById(R.id.product_price_coffee); 
      price.setText(String.format("%.2f", currentPosition.getPrice())); 
     } 
     return arrayView; 
    } 

    public void filter(String charText) { 
     charText = charText.toLowerCase(Locale.getDefault()); 
     items.clear(); 
     if (charText.length() == 0) { 
      items.addAll(arraylist); 
     } else { 
      for (DrinksList wp : arraylist) { 
       if (wp.getName().toLowerCase(Locale.getDefault()) 
         .contains(charText)) { 
        items.add(wp); 
       } 
      } 
     } 
     notifyDataSetChanged(); 
    } 
}

我嘗試以下的Android開發者的例子，但我不能。在此先感謝！有什麼想法？

來源

2014-11-13 Kostas Drak

將代碼放在你的適配器中的getFilter（）中 –

我沒有一個名爲getFilter（）的方法。它顯示了當我在適配器後添加點 –

爲什麼不嘗試與baseadapter？ – Dev

而不是在Adapter類中添加過濾器方法。 ..添加它在你片段..這樣..

public class DrinksFragment extends Fragment { 

    private View rootView; 
    private ArrayAdapter<DrinksList> adapter; 
    private List<DrinksList> drinks; 
    private ListView lv; 
    ArrayList<DrinksList> mAllData=new ArrayList<DrinksList>(); 
    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     rootView = inflater.inflate(R.layout.activity_drinks_fragment, container, false); 
     populateDrinksList(); 
     doSearch(); 
     return rootView; 
    } 

    private void doSearch() { 
     final EditText et = (EditText)rootView.findViewById(R.id.searchListDrinks); 
     et.addTextChangedListener(new TextWatcher() { 
      @Override 
      public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
      } 

      @Override 
      public void onTextChanged(CharSequence s, int start, int before, int count) { 

      } 

      @Override 
      public void afterTextChanged(Editable s) { 
       String text = et.getText().toString().toLowerCase(Locale.getDefault()); 
      filter(text); 
      } 
     }); 
    } 



    private void populateDrinksList() { 
     drinks = new ArrayList<DrinksList>(); 
     drinks.add(new DrinksList(R.drawable.coca, "Coca Cola", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocalight, "Coca Cola Light", 2.50)); 
     drinks.add(new DrinksList(R.drawable.cocazero, "Coca Cola Zero", 2.50)); 
     drinks.add(new DrinksList(R.drawable.orange, "Fanta Orange", 2.50)); 
     drinks.add(new DrinksList(R.drawable.lemon, "Fanta Lemon", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ble, "Fanta Blue", 2.50)); 
     drinks.add(new DrinksList(R.drawable.sprite, "Sprite", 2.50)); 
     drinks.add(new DrinksList(R.drawable.soda, "Soda Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.tonic, "Tonic Water", 2.50)); 
     drinks.add(new DrinksList(R.drawable.ioli, "Sparkling Water Ioli", 2.50)); 
     drinks.add(new DrinksList(R.drawable.perrier, "Sparkling Water Perrier", 2.50)); 
     drinks.add(new DrinksList(R.drawable.nero, "Still Water", 2.00)); 
     drinks.add(new DrinksList(R.drawable.redbull, "Red Bull", 4.00)); 
     drinks.add(new DrinksList(R.drawable.zelita, "Zelita", 2.50)); 

mAllData.addAll(drinks); 
     lv = (ListView)rootView.findViewById(R.id.drinksListView); 
     adapter = new MyCustomDrinksListAdapter(getActivity().getApplicationContext(),  R.layout.list_item, drinks); 
     lv.setAdapter(adapter); 
    } 


public void filter(String charText) { 
     charText = charText.toLowerCase(Locale.getDefault()); 
     drinks .clear(); 
     if (charText.length() == 0) { 
      drinks.addAll(mAllData); 
     } else { 
      for (DrinksList wp : mAllData) { 
       if (wp.getName().toLowerCase(Locale.getDefault()) 
         .contains(charText)) { 
        drinks .add(wp); 
       } 
      } 
     } 
     notifyDataSetChanged(); 
    } 

}

和你適配器類將保持原樣（刪除濾波器法）..

public class MyCustomDrinksListAdapter extends ArrayAdapter<DrinksList> { 


    // private List<DrinksList> items = null; // no use 
    private ArrayList<DrinksList> arraylist; 
    public MyCustomDrinksListAdapter(Context context, int layoutId, List<DrinksList> items) { 
     super(context, layoutId, items); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View arrayView = convertView; 
     if(arrayView == null){ 
      LayoutInflater vi; 
      vi = LayoutInflater.from(getContext()); 
      arrayView = vi.inflate(R.layout.list_item, parent, false); 
     } 

     DrinksList currentPosition = getItem(position); 
     if(currentPosition != null){ 
      ImageView image = (ImageView)arrayView.findViewById(R.id.product_image_coffee); 
      image.setImageResource(currentPosition.getImage()); 

      TextView name = (TextView)arrayView.findViewById(R.id.product_name_coffee); 
      name.setText(currentPosition.getName()); 

      TextView price = (TextView)arrayView.findViewById(R.id.product_price_coffee); 
      price.setText(String.format("%.2f", currentPosition.getPrice())); 
     } 
     return arrayView; 
    } 


}

謝謝。希望它的工作...... !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! !! ............ 1

來源

2014-11-21 09:12:22 iMDroid

您的自定義適配器必須實現Filterable接口，並且您應該重寫getFilter（）方法。

是指這樣的回答： How to implement getfilter() with custom adapter that extends baseadapter

來源

2014-11-13 21:59:14

和getFilter方法我該怎麼辦？ –

用getFilter方法應該定義您要如何執行搜索時，由於您使用的自定義對象（DrinksList）不是原始數據類型的ArrayList。 –

檢查我發佈的鏈接。 –

我想通了，問題是MyCustomDrinksListAdapter類的構造函數。在構造函數初始化 ArrayList的是這樣的：

arraylist = new ArrayList<DrinksList>(); 
this.arraylist.addAll(items);

你並不需要從基礎適配器擴展只是改變你的構造函數。看起來你並不熟悉ViewHolder的概念。在getView()中搜索並使用它可以提高性能。但你的剩餘代碼是正確的，但構造。如果你需要任何其他幫助，你可以問。

來源

2014-11-20 15:16:27

構造函數工作正常，因爲它和列表視圖運行正常...但是，爲什麼我應該使用vieholder類？什麼會改善？而且問題是關於在自定義適配器的列表視圖中實現搜索 –

您需要更改構造函數的原因是有兩個列表，一個是項目，另一個是arraylist，它是永久性的。您需要初始化arrayList，否則您怎麼能跟蹤所有drinkItems？看看你的列表項目被用作臨時基礎，當你搜索例子「c」時，包含「c」的所有項目將被插入到數組列表中的項目中。如果你沒有在構造函數中初始化arraylist如何它可以成爲所有物品的永久存儲空間嗎？做到這一點，看看你的自我。 –

而關於ViewHolder它會提高性能。查看findViewById（）方法使用CPU爲什麼你需要找到一個你已經提到的項目？查看Holder的目的是檢查你是否已經有了像TextView這樣的控件的引用，然後再次找不到它。有一個示例http://www.javacodegeeks.com/2013/09/android-viewholder-pattern-example。 html –

這是你需要將它用來實現列表視圖一個srach代碼：從following教程採取

inputSearch.addTextChangedListener(new TextWatcher() { 

    @Override 
    public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
     // When user changed the Text 
     MainActivity.this.adapter.getFilter().filter(cs); 
    } 

    @Override 
    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
      int arg3) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void afterTextChanged(Editable arg0) { 
     // TODO Auto-generated method stub       
    } 
});

。希望它有幫助:)

來源

2014-11-21 09:08:08

實現搜索裏面片段

回答

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