контекстная панели действий на пользовательских ListView

Question

мне нужно реализовать контекстную панель действий на режиме просмотра списка для удаления списка выбранных элементов и я попробовал много учебников, но не получить результат

1) contextual_menu.xml 

<?xml version="1.0" encoding="utf-8"?> 
<menu xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto"> 
<item 
    android:id="@+id/item_delete" 
    android:icon="@drawable/delete" 
    app:showAsAction="ifRoom|withText" 
    android:title="Delete" 
    android:titleCondensed="Delete"> 
</item> 
</menu> 

2) main_activity.xml 



<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="@drawable/background" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context=".MainActivity"> 

<RelativeLayout 
    android:id="@+id/titlelayout" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"> 

    <ImageView 
     android:id="@+id/btnbackicon" 
     android:layout_width="40dp" 
     android:layout_height="60dp" 
     android:paddingLeft="-15dp" 
     android:paddingStart="-15dp" 
     android:paddingRight="-4dp" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" 
     android:layout_centerVertical="true" 
     android:onClick="onBackIconClick" 
     android:background="@drawable/back_arrow" /> 

    <ImageView 
     android:id="@+id/gmmf_logo" 
     android:layout_width="90dp" 
     android:paddingLeft="-10dp" 
     android:layout_height="90dp" 
     android:layout_alignParentTop="true" 
     android:layout_toRightOf="@+id/btnbackicon" 
     android:onClick="onImageBackClick" 
     android:src="@drawable/gmmf" /> 

    <TextView 
     android:id="@+id/title" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentEnd="true" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentTop="true" 
     android:layout_toEndOf="@+id/gmmf_logo" 
     android:layout_toRightOf="@+id/gmmf_logo" 
     android:background="@drawable/text_bg" 
     android:gravity="center" 
     android:padding="20dip" 
     android:text="@string/app_name" 
     android:textColor="@color/whiteColor" 
     android:textSize="30sp" 
     android:textStyle="bold" /> 


</RelativeLayout> 

<TextView 
    android:id="@+id/txtActivityTitle" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/titlelayout" 
    android:text="Favorite Restaurants" 
    android:textSize="55sp" 
    android:background="@color/lightblack" 
    android:gravity="center" 
    android:textColor="@color/Orange" 
    android:textStyle="bold" 
    android:typeface="serif" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true" 
    android:layout_alignRight="@+id/titlelayout" 
    android:layout_alignEnd="@+id/titlelayout" /> 

<ListView 
    android:id="@+id/list_view" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_centerVertical="true" 
    android:choiceMode="multipleChoice" 
    android:layout_marginTop="10dp" 
    android:background="?android:attr/activatedBackgroundIndicator" 
    android:layout_below="@+id/txtActivityTitle"></ListView> 

</RelativeLayout> 

3) list_row_layout.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"> 

<TextView 
    android:id="@+id/txtRestroName" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:textColor="@color/Darkorange" 
    android:textSize="22sp" 
    android:textStyle="bold" /> 

<TextView 
    android:id="@+id/txtRastroType" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/txtRestroName" 
    android:textColor="@color/whiteColor" 
    android:textSize="18sp" 
    /> 

<Button 
    android:id="@+id/viewdetails" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentRight="true" 
    android:layout_below="@+id/txtRestroRating" 
    android:background="@drawable/detail_button" 
    android:text="View Details" 
    android:textColor="@color/whiteColor" 
    android:textSize="18sp" 
    android:textStyle="bold" /> 

<TextView 
    android:id="@+id/txtRestroRating" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentRight="true" 
    android:textColor="@color/whiteColor" 
    android:textSize="18sp" /> 

<View 
    android:id="@+id/line1" 
    android:layout_width="match_parent" 
    android:layout_height="2dp" 
    android:layout_below="@+id/viewdetails" 
    android:layout_marginTop="5dp" 
    android:background="@color/whiteColor" /> 

</RelativeLayout> 

4) CustomFavRestroAdapter.java 

public class CustomFavRestroAdapter extends ArrayAdapter<FavEntityList> { 

Context context; 
LayoutInflater inflater; 
List<FavEntityList> favRestroList; 
private SparseBooleanArray mSelectedItemsIds; 

public CustomFavRestroAdapter(Context context, int resourceId, 
         List<FavEntityList> favRestroList) { 
    super(context, resourceId, favRestroList); 
    mSelectedItemsIds = new SparseBooleanArray(); 
    this.context = context; 
    this.favRestroList = favRestroList; 
    inflater = LayoutInflater.from(context); 
} 

private class ViewHolder { 
    TextView restroname; 
    TextView restrotype; 
    TextView restroratings; 
} 

public View getView(int position, View view, ViewGroup parent) { 
    final ViewHolder holder; 
    if (view == null) { 
     holder = new ViewHolder(); 
     view = inflater.inflate(R.layout.list_row_layout, null); 
     // Locate the TextViews in listview_item.xml 
     holder.restroname = (TextView) view.findViewById(R.id.txtRestroName); 
     holder.restrotype = (TextView) view.findViewById(R.id.txtRastroType); 
     holder.restroratings = (TextView) view.findViewById(R.id.txtRestroRating); 
     // Locate the ImageView in listview_item.xml 

     view.setTag(holder); 
    } else { 
     holder = (ViewHolder) view.getTag(); 
    } 
    // Capture position and set to the TextViews 
    holder.restroname.setText(favRestroList.get(position).getRestaurantName()); 
    holder.restrotype.setText(favRestroList.get(position).getRestaurantType()); 
    holder.restroratings.setText(favRestroList.get(position).getRestaurantRating()); 

    return view; 
} 

@Override 
public void remove(FavEntityList object) { 
    favRestroList.remove(object); 
    notifyDataSetChanged(); 
} 

public List<FavEntityList> getWorldPopulation() { 
    return favRestroList; 
} 

public void toggleSelection(int position) { 
    selectView(position, !mSelectedItemsIds.get(position)); 
} 

public void removeSelection() { 
    mSelectedItemsIds = new SparseBooleanArray(); 
    notifyDataSetChanged(); 
} 

public void selectView(int position, boolean value) { 
    if (value) 
     mSelectedItemsIds.put(position, value); 
    else 
     mSelectedItemsIds.delete(position); 
    notifyDataSetChanged(); 
} 

public int getSelectedCount() { 
    return mSelectedItemsIds.size(); 
} 

public SparseBooleanArray getSelectedIds() { 
    return mSelectedItemsIds; 
} 
} 

5) MainActivity.java 

public class MainActivity extends Activity { 

ListView list1; 
CustomFavRestroAdapter listviewadapter; 
List<FavEntityList> favrestro = new ArrayList<FavEntityList>(); 

String[] Restaurant_Names={"Paasha-JW Mariott Pune","RainForest","SubWay","KFC","Domino's","Pride Hotel","Blue Star"}; 
String[] Restaurant_Type={"Restro Bar","Restaurant (Vegetarian)","Restaurant (Non-Vegetarian)","Restaurant (Non-Vegetarian)","Restaurant (Vegetarian)","Restaurant (Vegetarian)","Restro Bar"}; 
String[] Restaurant_Rating={"Ratings 5.0","Ratings 4.8","Ratings 4.6","Ratings 4.0","Ratings 3.7","Ratings 3.5","Ratings 3.4"}; 

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

    for (int i = 0; i < Restaurant_Names.length; i++) { 
     FavEntityList favrestros = new FavEntityList(Restaurant_Names[i], Restaurant_Type[i], Restaurant_Rating[i]); 
     favrestro.add(favrestros); 
    } 

    list1 = (ListView) findViewById(R.id.list_view); 
    listviewadapter = new CustomFavRestroAdapter(this, R.layout.list_row_layout, favrestro); 
     list1.setAdapter(listviewadapter); 
    list1.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL); 
    list1.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() { 
     @Override 
     public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { 
      final int checkedCount = list1.getCheckedItemCount(); 
      // Set the CAB title according to total checked items 
      mode.setTitle(checkedCount + " Selected"); 
      // Calls toggleSelection method from ListViewAdapter Class 
      listviewadapter.toggleSelection(position); 
     } 

     @Override 
     public boolean onCreateActionMode(ActionMode mode, Menu menu) { 
      mode.getMenuInflater().inflate(R.menu.contextual_menu, menu); 
      return true; 
     } 

     @Override 
     public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 
      return false; 
     } 

     @Override 
     public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 
      switch (item.getItemId()) { 
       case R.id.item_delete: 
        // Calls getSelectedIds method from ListViewAdapter Class 
        SparseBooleanArray selected = listviewadapter 
          .getSelectedIds(); 
        // Captures all selected ids with a loop 
        for (int i = (selected.size() - 1); i >= 0; i--) { 
         if (selected.valueAt(i)) { 
          FavEntityList selecteditem = listviewadapter 
            .getItem(selected.keyAt(i)); 
          // Remove selected items following the ids 
          listviewadapter.remove(selecteditem); 
         } 
        } 
        // Close CAB 
        mode.finish(); 
        return true; 
       default: 
        return false; 
      } 
     } 

     @Override 
     public void onDestroyActionMode(ActionMode mode) { 
      listviewadapter.removeSelection(); 
     } 
    }); 


} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu_main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 
} 

Я пробовал много ответов 1) selected item on custom listview with contextual action bar

2) contextual action bar

Спасибо за любую последовательность заранее

Answer 1

В вашем list_row_layo ut.xml добавить следующую строку

android:descendantFocusability="blocksDescendants" 

Поскольку у вас есть кнопки в вашем подряд LongClick не будет запускать, поэтому необходимо добавить строку выше.

Также добавьте

list1.setOnItemLongClickListener(this). 

ActionBar слушателей

@Override 
    public boolean onCreateActionMode(ActionMode mode, Menu menu) { 

    MenuInflater inflater = mode.getMenuInflater(); 
    inflater.inflate(R.menu.contextual_menu.xml, menu); 
    return true; 
    } 

@Override 
public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 
    return true; 
} 

Answer 2

Наконец решена проблема

Из-за Баттона, OnItemLongClick не казнить, так что

Я просто удалить кнопку и поставить Изображение детализированного изображения.

благодаря @Lochana Ragupathy :)