Android uses ListView to bulk Delete Item methods _android

The example in this article describes how Android uses ListView to bulk Delete item. Share to everyone for your reference, specific as follows:

Use the checkbox to select one or more item, and then delete them in bulk.

The program operation effect chart is as follows:

Start the code below:

(The code has been corrected, and the problem of rolling disturbances is resolved)

Package com.test.adapter;
Import java.util.ArrayList;
Import Java.util.HashMap;
Import java.util.List;
Import Java.util.Map;
Import android.app.ListActivity;
Import Android.content.Context;
Import Android.os.Bundle;
Import Android.view.LayoutInflater;
Import Android.view.Menu;
Import Android.view.MenuItem;
Import Android.view.View;
Import Android.view.ViewGroup;
Import Android.widget.AdapterView;
Import Android.widget.AdapterView.OnItemClickListener;
Import Android.widget.BaseAdapter;
Import Android.widget.CheckBox;
Import Android.widget.ListView;
Import Android.widget.TextView;
Import Android.widget.Toast;
Import Com.test.adapter.ArrayAdapterActivity.ListVIewAdapter.ViewHolder; /** * ListView Bulk Delete Item * @author MANYMORE13 * * */public class Arrayadapteractivity extends Listactivity {private L
  Istviewadapter Ladapter;
  Private list<string> strlist = new arraylist<string> ();
  Private list<boolean> boollist = new arraylist<boolean> (); Boolean visflag = fAlse;
  ListView LV; Static String str[] ={"1 Apples", "2 Bananas", "3 Oranges", "4 Kiwi", "5 Plums", "6 Sugarcane", "7 Litchi", "8 Peaches", "9 cantaloupe", "10 Grapes", "11 cantaloupe", "12 Longan", "13 Longan", "14", "
  15 "," 16 "," 17 "," 18 "," 19 "," 20 "};
  CheckBox CB;
      {for (int i=0;i<str.length;i++) {strlist.add (str[i]);
    Boollist.add (FALSE);
    } @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Ladapter = new Listviewadapter (this);
    LV = This.getlistview ();
    Lv.setadapter (Ladapter);
    Lv.setscrollbarstyle (1); Lv.setonitemclicklistener (New Onitemclicklistener () {@Override public void Onitemclick (ADAPTERVIEW&LT;?&G T Parent, view view, int position, long id) {if (Visflag) {Viewholder Viewholder
          = (Viewholder) view.gettag ();
          ViewHolder.cb.toggle ();
          if (viewHolder.cb.isChecked ()) {Boollist.set (position, true);
 }else{Boollist.set (position, false);         }
        }
      }
    });
    Class Listviewadapter extends Baseadapter {context C;
    Layoutinflater Minflater;
      Listviewadapter (Context context) {c = context;
    Minflater = Getlayoutinflater ();
    @Override public int GetCount () {return strlist.size ();
    @Override public Object getitem (int position) {return strlist.get (position);
    @Override public long getitemid (int position) {return position; @Override Public View getview (final int position, View Convertview, ViewGroup parent) {viewho
      Lder holder = null;
        if (Convertview = = null) {holder = new Viewholder ();
        Convertview = minflater.inflate (R.layout.list_item, NULL);
        Holder.tv = (TextView) Convertview.findviewbyid (R.id.textview);
        HOLDER.CB = (CheckBox) Convertview.findviewbyid (R.id.checkbox);
      Convertview.settag (holder); }else{Holder = (Viewholder) convertview.gettag ();
      } holder.tv.setText (Strlist.get (position));
      Holder.cb.setChecked (Boollist.get (position));
      if (Visflag) {holder.cb.setVisibility (view.visible);
      else {holder.cb.setVisibility (view.invisible);
    return convertview;
      Class Viewholder {TextView TV;
    CheckBox CB;
    @Override public boolean Oncreateoptionsmenu (Menu menu) {menu.add (0, 0, 0, batch processing);
    Menu.add (0, 1, 0, "confirm deletion");
  return Super.oncreateoptionsmenu (menu); @Override public boolean onoptionsitemselected (MenuItem item) {switch (Item.getitemid ()) {case 0:/
            /Bulk Processing {if (Visflag) {Visflag = false;
            for (int i=0; i<boollist.size (); i++) {Boollist.set (I, false);
          } else {Visflag = true; } THIS.LADAPTer.notifydatasetinvalidated ();
        Break
              Case 1://Determine delete {if (boollist.size () >0) {if (Visflag) {
              for (int location=0; location<boollist.size ();)
                  {if (Boollist.get (location)) {Boollist.remove (location);
                  Strlist.remove (location);
                Continue
              } location++;
          }} this.ladapter.notifyDataSetChanged ();
        Break
  } return super.onoptionsitemselected (item);

 }
}

and List_item.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/" Android "android:orientation=" vertical "android:layout_width=" fill_parent "android:layout_height=" "Fill_parent"
  ;
      <relativelayout android:layout_width= "fill_parent" android:layout_height= "wrap_content" > <TextView
      Android:id= "@+id/textview" android:layout_width= "wrap_content" android:layout_height= "Wrap_content"
      android:text= "@string/hello" android:layout_alignparentleft= "true" android:layout_centervertical= "true" /> <checkbox android:id= "@+id/checkbox" android:layout_width= "Wrap_content" Android:layout_hei ght= "Wrap_content" android:layout_alignparentright= "true" android:visibility= "Gone" android:focusable= "F" Alse "android:focusableintouchmode= false" android:clickable= "false"/> </RelativeLayout>

 ;/linearlayout>

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I hope this article will help you with the Android program.