Popolare l'elenco di visualizzazione personalizzata utilizzando ListFragment

Question

Sto tentando di mostrare gli elementi in una visualizzazione elenco utilizzando Frammenti. Ho creato il mio visualizzazione personalizzata come segue

rappresentazione grafica di list_row.xml

list_row.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" 
    android:padding="5dip" > 

    <!-- ListRow Left sied Thumbnail image --> 

    <LinearLayout 
     android:id="@+id/thumbnail" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_marginRight="5dip" 
     android:padding="3dip" > 

     <ImageView 
      android:id="@+id/list_image" 
      android:layout_width="50dip" 
      android:layout_height="50dip" 
      android:contentDescription="@string/image_desc"/> 
    </LinearLayout> 

    <!-- Menu name --> 

    <TextView 
     android:id="@+id/menu_name" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignTop="@+id/thumbnail" 
     android:layout_toRightOf="@+id/thumbnail" 
     android:text="@string/menu_name" 
     android:textColor="#040404" 
     android:textSize="15sp" 
     android:textStyle="bold" 
     android:typeface="sans" /> 

    <!-- Description --> 

    <TextView 
     android:id="@+id/description" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignBottom="@+id/thumbnail" 
     android:layout_below="@id/menu_name" 
     android:layout_marginTop="1dip" 
     android:layout_toRightOf="@+id/thumbnail" 
     android:text="@string/description" 
     android:textColor="#343434" 
     android:textSize="10sp" 
     tools:ignore="SmallSp" /> 

    <!-- Price --> 

    <TextView 
     android:id="@+id/price" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentRight="true" 
     android:layout_alignTop="@id/menu_name" 
     android:layout_marginRight="5dip" 
     android:gravity="right" 
     android:text="@string/price" 
     android:textColor="#10bcc9" 
     android:textSize="10sp" 
     android:textStyle="bold" 
     tools:ignore="SmallSp" /> 

</RelativeLayout> 

Nel file di fragment.xml, ho semplicemente messo un visualizzazione elenco all'interno di un layout lineare

fragment.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/LinearLayout1" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 

    <ListView 
     android:id="@+id/listView1" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" > 
    </ListView> 

</LinearLayout> 

Ho un array di oggetti di menu, che ha i campi necessari per popolare list_row.xml come nome del menu, descrizione, prezzo e immagine. Non sono riuscito a trovare un modo per riempire la lista di fragment.xml con gli elementi list_row. Qualsiasi aiuto o idea sarebbe apprezzato.

PS: Penso in fragment.xml invece di android:id="@+id/listView1" campo, devo scrivere android:id="@id/list" dal momento che sto usando ListFragment

Answer 1

ho risolto il mio problema (come system32 suggerisce al commento) creazione di una classe CustomArrayAdapter, e impostandolo come adattatore per il mio listView.

Prima ho modificato android:id="@+id/listView1" in android:id="@android:id/list" in fragment.xml.

CustomArrayAdapter.java

public class CustomArrayAdapter extends ArrayAdapter<Menu> { 

    Context context; 

    public CustomArrayAdapter(Context context, int textViewResourceId, List<Menu> objects) { 
     super(context, textViewResourceId, objects); 
     // TODO Auto-generated constructor stub 
     this.context = context; 
    } 

    /*private view holder class*/ 
    private class ViewHolder { 
     ImageView imageView; 
     TextView txtMenuName; 
     TextView txtMenuDesc; 
     TextView txtPrice; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     ViewHolder holder = null; 
     Menu rowItem = getItem(position); 

     LayoutInflater mInflater = (LayoutInflater) context 
       .getSystemService(Activity.LAYOUT_INFLATER_SERVICE); 
     if (convertView == null) { 
      convertView = mInflater.inflate(R.layout.list_row, null); 
      holder = new ViewHolder(); 
      holder.txtMenuName = (TextView) convertView.findViewById(R.id.menu_name); 
      holder.txtMenuDesc = (TextView) convertView.findViewById(R.id.description); 
      holder.txtPrice = (TextView) convertView.findViewById(R.id.price); 
      holder.imageView = (ImageView) convertView.findViewById(R.id.list_image); 
      convertView.setTag(holder); 
     } else 
      holder = (ViewHolder) convertView.getTag(); 

     holder.txtMenuDesc.setText(rowItem.getDescription()); 
     holder.txtMenuName.setText(rowItem.getName()); 
     holder.txtPrice.setText(String.valueOf(rowItem.getPrice()) + " TL"); 
     //holder.imageView.setImageResource(rowItem.getImageId()); 

     return convertView; 
    } 

} 

Poi lo uso nella mia classe Frammento

public static class Fragment extends ListFragment { 
     /** 
     * The fragment argument representing the section number for this 
     * fragment. 
     */ 
     public static final String ARG_SECTION_NUMBER = "section_number"; 

     private ListView listView; 
     private ArrayList<Menu> menuItems; 
     private CustomArrayAdapter mAdapter; 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      View rootView = inflater.inflate(R.layout.fragment, 
        container, false); 
      listView = (ListView) rootView.findViewById(android.R.id.list); 

      return rootView; 
     } 

     @Override 
     public void onActivityCreated(Bundle savedInstanceState) { 
      super.onActivityCreated(savedInstanceState); 
      int num = getArguments().getInt(ARG_SECTION_NUMBER); 
      // GlobalList is a class that holds global variables, arrays etc 
      // getMenuCategories returns global arraylist which is initialized in GlobalList class 
      menuItems = GlobalList.getMenuCategories().get(num).getMenu(); 
      mAdapter = new CustomArrayAdapter(getActivity(), android.R.id.list, menuItems); 
      listView.setAdapter(mAdapter); 
     } 
    }