Переместить элемент в конец спискаView по щелчку

Question

Мне сложно определить этот вариант, мне нужно иметь возможность щелкнуть элемент списка и переместить этот элемент в нижней части списка с некоторым фоном изменение цвета, чтобы иметь значение, затем, если щелкнуть назад, верните его в исходное положение в списке.

Я пробовал с list.addFooterView(), но я не могу заставить его работать таким образом, он просто прикрепляет пустой элемент к нижнему колонтитулу, я не мог заставить его вернуться к исходной позиции.

Вот мой код. Любые идеи о том, как справиться с этим, оцениваются.

ActivityProductsBuy.java

package com.roneskinder; 

import java.util.ArrayList; 
import java.util.List; 

import android.app.Activity; 
import android.content.Context; 
import android.content.SharedPreferences; 
import android.database.Cursor; 
import android.database.DatabaseUtils; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteException; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Canvas; 
import android.graphics.Matrix; 
import android.graphics.Paint; 
import android.graphics.drawable.BitmapDrawable; 
import android.os.Bundle; 
import android.preference.PreferenceManager; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.ListView; 
import android.widget.TextView; 

import com.roneskinder.model.DataProducts; 
import com.roneskinder.utils.DatabaseHandler; 
import com.roneskinder.x111.R; 

public class ActivityProductsBuy extends Activity { 

    protected Context mContext; 

    protected DatabaseHandler db; 
    private SQLiteDatabase newDB; 
    private String tableProducts = DatabaseHandler.TABLE_PRODUCTS; 

    protected ListView lvProducts; 
    protected String title, idProduct, idGroceryList, ProductCode, ProductName; 
    protected int totalItems, itemsInCart = 0; 
    protected Button btn_itemsInCart; 
    protected TextView tv_percentText; 

    /** The data used for products */ 
    private List<DataProducts> info; 

    /** The Adapter holds the listview. */ 
    private ProductsItemAdapter adapter1; 

    private static final int ZBAR_SCANNER_REQUEST = 0; 

    protected SharedPreferences preferences; 

    protected String TAG = ActivityProductsBuy.class.getName(); 

    ImageView imgHolder; 
    Paint paint; 
    EditText edtPercentage; 

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

     mContext = getApplicationContext(); 

     // Get Database values for User 
     db = new DatabaseHandler(mContext); 

     preferences = PreferenceManager.getDefaultSharedPreferences(this); 

     // remove and add products to DB 
     //db.removeAllProducts(); 
     // this.addProducts(); 

     // get intent Extras (the title, list id) 
     //title = getIntent().getExtras().getString("title"); 
     idGroceryList = getIntent().getExtras().getString("idGroceryList"); 

     lvProducts = (ListView) findViewById(R.id.lvProducts); 

     info = new ArrayList<DataProducts>(); 
     imgHolder = (ImageView) findViewById(R.id.coringImage); 
     btn_itemsInCart = (Button) findViewById(R.id.btn_itemsInCart); 
     tv_percentText = (TextView) findViewById(R.id.percentText); 
     tv_percentText.setText("0%"); 

     paint = new Paint(); 

     adapter1 = new ProductsItemAdapter(this, info); 

     // load all database products into listview 
     lvProducts.setAdapter(adapter1); 
     loadProducts(); 
     totalItems = adapter1.getCount(); 

     lvProducts.setOnItemClickListener(new OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 
       itemsInCart++; 
       if(itemsInCart <= totalItems){ 
        btn_itemsInCart.setText("(" + itemsInCart + "/"+ totalItems +")"); 
        // Fill percentage of image 
        float percentage = ((float)itemsInCart/(float)totalItems)*100; 
        Log.d(TAG, "percentage: " + percentage); 
        imgHolder.setImageResource(R.drawable.cart_default); 

        if (percentage > 0 && percentage <= 100) { 
         imgHolder.setImageBitmap(doBottomToTopOperation(Math.round(percentage))); 
         tv_percentText.setText((int)percentage + "%"); 
        } 
       } 
      } 
     }); 
    } 

    public void loadProducts() { 
     info.clear(); 
     ((BaseAdapter) lvProducts.getAdapter()).notifyDataSetChanged(); 
     Cursor cur = null; 
     try { 
      newDB = db.getWritableDatabase(); 
      cur = newDB.rawQuery(
        "SELECT idProduct, ProductCode, name FROM " 
          + tableProducts + " WHERE idGroceryList = " + idGroceryList, null); 

      Log.d(TAG, DatabaseUtils.dumpCursorToString(cur)); 

      if (cur != null) { 
       // tvNoProducts.setVisibility(View.GONE); 
       if (cur.moveToFirst()) { 
        do { 
         idProduct = cur.getString(cur.getColumnIndex("idProduct")); 
         ProductCode = cur.getString(cur.getColumnIndex("ProductCode")); 
         ProductName = cur.getString(cur.getColumnIndex("name")); 

         info.add(new DataProducts(ProductName, ProductCode,idProduct, "Vegetales", "0", idGroceryList)); 
        } while (cur.moveToNext()); 
       } 
      } else { 
       // tvNoProducts.setVisibility(View.VISIBLE); 
      } 
     } catch (SQLiteException se) { 
      Log.e(getClass().getSimpleName(), 
        "Could not create or Open the database"); 
     } 

    } 

    /** 
    * The Class ProductsItemAdapter. 
    */ 
    private class ProductsItemAdapter extends BaseAdapter { 

     /** The context. */ 
     private Context context; 

     /** The list. */ 
     private List<DataProducts> list; 

     /** The inflater. */ 
     private LayoutInflater inflater; 

     /** 
     * Instantiates a new deal item adapter. 
     * 
     * @param context 
     *   the context 
     * @param list 
     *   the list 
     */ 
     public ProductsItemAdapter(Context context, List<DataProducts> list) { 
      this.context = context; 
      this.list = list; 
     } 

     /* 
     * (non-Javadoc) 
     * 
     * @see android.widget.Adapter#getCount() 
     */ 
     @Override 
     public int getCount() { 
      // TODO Auto-generated method stub 
      return list.size(); 
     } 

     /* 
     * (non-Javadoc) 
     * 
     * @see android.widget.Adapter#getItem(int) 
     */ 
     @Override 
     public Object getItem(int position) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     /* 
     * (non-Javadoc) 
     * 
     * @see android.widget.Adapter#getItemId(int) 
     */ 
     @Override 
     public long getItemId(int position) { 
      // TODO Auto-generated method stub 
      return 0; 
     } 

     /* 
     * (non-Javadoc) 
     * 
     * @see android.widget.Adapter#getView(int, android.view.View, 
     * android.view.ViewGroup) 
     */ 
     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      if (convertView == null) { 
       inflater = (LayoutInflater) context 
         .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       convertView = inflater.inflate(R.layout.adapter_products, null); 
      } 
      TextView txt1 = (TextView) convertView 
        .findViewById(R.id.tvProductName); 
      TextView txt2 = (TextView) convertView 
        .findViewById(R.id.tvProductCode); 
      TextView tv1 = (TextView) convertView 
        .findViewById(R.id.tvProductPrice); 
      TextView tv2 = (TextView) convertView 
        .findViewById(R.id.tvProductCategory); 

      final DataProducts dInfo = list.get(position); 
      txt1.setText(dInfo.getProductName()); 
      txt2.setText(dInfo.getProductCode()); 

      tv1.setText(dInfo.getProductPrice()); 
      // tv1.setPaintFlags(tv1.getPaintFlags() | 
      // Paint.STRIKE_THRU_TEXT_FLAG); 

      tv2.setText(dInfo.getProductCategory()); 
      return convertView; 
     } 

    } 

    public Bitmap doBottomToTopOperation(int percentage) { 
     Bitmap bitmapOriginal = ((BitmapDrawable) imgHolder.getDrawable()).getBitmap(); 

     Bitmap bitmapTarget = BitmapFactory.decodeResource(getResources(), R.drawable.cart_filled); 

     int heightToCrop = bitmapTarget.getHeight() * (100 - percentage)/100; 

     Bitmap croppedBitmap = Bitmap.createBitmap(bitmapTarget, 0, heightToCrop, bitmapTarget.getWidth(), bitmapTarget.getHeight() - heightToCrop); 

     Bitmap bmOverlay = Bitmap.createBitmap(bitmapOriginal.getWidth(), 
       bitmapOriginal.getHeight(), bitmapOriginal.getConfig()); 
     Canvas canvas = new Canvas(bmOverlay); 
     canvas.drawBitmap(bitmapOriginal, new Matrix(), null); 
     canvas.drawBitmap(croppedBitmap, 
       canvas.getWidth() - croppedBitmap.getWidth(), 
       canvas.getHeight() - croppedBitmap.getHeight(), null); 

     return bmOverlay; 
    } 

} 

activity_products_buy.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <com.sothree.slidinguppanel.SlidingUpPanelLayout 
     xmlns:sothree="http://schemas.android.com/apk/res-auto" 
     android:id="@+id/sliding_layout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:gravity="bottom" 
     sothree:umanoPanelHeight="68dp" 
     sothree:umanoShadowHeight="4dp" > 

     <!-- MAIN LAYOUT --> 

     <ListView 
      android:id="@+id/lvProducts" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:layout_below="@+id/myFilter" > 
     </ListView> 

     <!-- SLIDING LAYOUT --> 

     <LinearLayout 
      android:id="@+id/dragView" 
      android:layout_width="match_parent" 
      android:layout_height="250dp" 
      android:background="#ffffff" 
      android:clickable="true" 
      android:focusable="false" 
      android:orientation="vertical" > 

      <LinearLayout 
       android:layout_width="match_parent" 
       android:layout_height="68dp" 
       android:background="#f0f0f0" 
       android:orientation="horizontal" > 

       <TextView 
        android:id="@+id/name" 
        android:layout_width="0dp" 
        android:layout_height="match_parent" 
        android:layout_weight="1" 
        android:gravity="center_vertical" 
        android:paddingLeft="10dp" 
        android:text="Total de Productos en el carrito" 
        android:textColor="#000" 
        android:textSize="14sp" /> 

       <Button 
        android:id="@+id/btn_itemsInCart" 
        android:layout_width="wrap_content" 
        android:layout_height="match_parent" 
        android:gravity="center_vertical|right" 
        android:paddingLeft="10dp" 
        android:paddingRight="10dp" 
        android:text="(0)" 
        android:textColor="#000" 
        android:textSize="14sp" /> 
      </LinearLayout> 

      <RelativeLayout 
       android:layout_width="match_parent" 
       android:layout_height="match_parent"> 

       <ImageView 
        android:id="@+id/coringImage" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_gravity="center" 
        android:src="@drawable/cart_default" /> 

       <TextView 
        android:id="@+id/percentText" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_alignBottom="@+id/coringImage" 
        android:layout_alignLeft="@+id/coringImage" 
        android:layout_alignRight="@+id/coringImage" 
        android:layout_alignTop="@+id/coringImage" 
        android:layout_margin="1dp" 
        android:gravity="center" 
        android:text="0%" 
        android:textColor="#ffffff" /> 
      </RelativeLayout> 
     </LinearLayout> 
    </com.sothree.slidinguppanel.SlidingUpPanelLayout> 

</RelativeLayout> 

adapter_products.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/top" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:gravity="center_vertical" 
    android:orientation="horizontal" 
    android:paddingLeft="@dimen/pad_10dp" 
    android:paddingRight="@dimen/pad_10dp" 
    android:paddingTop="@dimen/pad_15dp" > 

    <LinearLayout 
     android:id="@+id/left_layout" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" > 

     <ImageView 
      android:id="@+id/item_img" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:paddingBottom="@dimen/pad_10dp" 
      android:src="@drawable/icon_mypurchase1" /> 
    </LinearLayout> 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" 
     android:paddingLeft="@dimen/pad_10dp" > 

     <LinearLayout 
      android:id="@+id/right_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal" > 

      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:orientation="vertical" > 

       <TextView 
        android:id="@+id/tvProductName" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Nombre del Producto" /> 

       <TextView 
        android:id="@+id/tvProductCode" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:paddingTop="@dimen/pad_2.5dp" 
        android:text="Codigo" /> 
      </LinearLayout> 

      <View 
       android:layout_width="0dp" 
       android:layout_height="match_parent" 
       android:layout_weight="1" /> 

      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:gravity="right" 
       android:orientation="vertical" > 

       <TextView 
        android:id="@+id/tvProductPrice" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="@string/$45" 
        android:textColor="@color/red_main" 
        android:textSize="@dimen/txt_18sp" /> 

       <TextView 
        android:id="@+id/tvProductCategory" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Categoria" 
        android:textSize="@dimen/txt_12sp" /> 
      </LinearLayout> 
     </LinearLayout> 

     <View 
      android:layout_width="match_parent" 
      android:layout_height="1dp" 
      android:layout_marginTop="@dimen/pad_15dp" 
      android:background="@color/my_purchase_list_sap" /> 
    </LinearLayout> 

</LinearLayout> 

Answer 1

Просто изменить индекс элемента в источнике данных, а затем notifyDataSetChanged()

DataProducts item = info.get(<index>); 
info.remove(<index>); 
info.add(item); 
adapter1.notifyDataSetChanged(); 

Установить фон для нижнего элемента в getView,

if (position==getCount()-1){ 
    convertView.setBackground(<backgroud>); 
} 

Если вы хотите переместить его обратно,

DataProducts item = info.get(info.size()-1); 
info.remove(info.size()-1); 
info.add(<original_index>,item); 
adapter1.notifyDataSetChanged();