Remove ListView items in Android

Question

Can somebody please give me an example code of removing all ListView items and replacing with new items   I tried replacing the adapter items without success  My code is  populateList      results   populated arraylist with strings   ArrayAdapter lt String gt  adapter   new ArrayAdapter lt String gt  this                  android R layout simple list item 1  results     listview setAdapter adapter    adapter notifyDataSetChanged     listview setOnItemClickListener this          now populating list again  repopulateList      results1   populated arraylist with strings   ArrayAdapter lt String gt  adapter1   new ArrayAdapter lt String gt  this                  android R layout simple list item 1  results1     listview setAdapter adapter1    adapter1 notifyDataSetChanged     listview setOnItemClickListener this       Here repopulateList   method will add to ListView items  but it doesn t remove replace all ListView items

User · Answer

I think if u add the following code  it will work  listview invalidateViews      To remove an item  Just remove that item from the arraylist that we passed to the adapter and do listview invalidateViews    This will refresh the listview

User · Answer

Try this code  it works for me   public class Third extends ListActivity   private ArrayAdapter lt String gt  adapter  private List lt String gt  liste   Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity third        String   values   new String      Android    iPhone    WindowsMobile                    Blackberry    WebOS    Ubuntu    Windows7    Max OS X                    Linux    OS 2          liste   new ArrayList lt String gt          Collections addAll liste  values        adapter   new ArrayAdapter lt String gt  this                  android R layout simple list item 1  liste        setListAdapter adapter       Override   protected void onListItemClick ListView l  View v  int position  long id         liste remove position        adapter notifyDataSetChanged

User · Answer

names   db getSites                la   new ArrayAdapter lt String gt  EditSiteList this                      android R layout simple list item 1  names               EditSiteList this setListAdapter la               listview invalidateViews      this code works fine for me

User · Answer

Remove it from the adapter and then notify the arrayadapter that data set has changed   m adapter remove o   m adapter notifyDataSetChanged

User · Answer

It s simple  First you should clear your collection and after clear list like this code     yourCollection clear     setListAdapter null

User · Answer

You can use   adapter clear      that will remove all item of your first adapter then you could either set another adapter or reuse the adapter and add the items to the old adapter  If you use   adapter add     to add data to your list you don t need to call notifyDataSetChanged

User · Answer

At first you should remove the item from your list  Later you may empty your adapter and refill it with new list   private void add final List lt Track gt  trackList        MyAdapter bindingData   new MyAdapter MyActivity this  trackList        list    ListView  findViewById R id my list      TODO      list setAdapter bindingData            Click event for single list row     list setOnItemClickListener new OnItemClickListener              public void onItemClick AdapterView lt   gt  parent  View view                  final int position  long id                   ShowPlacePref places  position               AlertDialog Builder showPlace   new AlertDialog Builder                      Favoriler this               showPlace setMessage  Remove from list                 showPlace setPositiveButton  DELETE   new OnClickListener                     public void onClick DialogInterface dialog  int which                             trackList remove position     FIRST OF ALL REMOVE ITEM FROM LIST                     list setAdapter null      THEN EMPTY YOUR ADAPTER                      add trackList      AT LAST REFILL YOUR LISTVIEW  Recursively                                                  showPlace setNegativeButton  CANCEL   new OnClickListener                     public void onClick DialogInterface dialog  int which                                                   showPlace show

User · Answer

int count   adapter getCount    for  int i   0  i  lt  count  i       adapter remove adapter getItem i        then call notifyDataSetChanged

User · Answer

You can also use listView setOnItemLongClickListener to delete selected item  Below is the code      listView   name of your ListView    listView setOnItemLongClickListener new AdapterView OnItemLongClickListener              Override         public boolean onItemLongClick AdapterView lt   gt  parent  View view  int          position  long id                it will get the position of selected item from the ListView  final int selected item   position               new AlertDialog Builder MainActivity this                       setIcon android R drawable ic delete                       setTitle  Are you sure                           setMessage  Do you want to delete the selected item                           setPositiveButton  Yes   new DialogInterface OnClickListener                              Override                         public void onClick DialogInterface dialog  int which                                                        list remove selected item                               arrayAdapter notifyDataSetChanged                                                                          setNegativeButton  No    null  show                 return true

User · Answer

You will want to remove   the item from your adapter object and then just run the notifyDatasetChanged   on the Adapter  any ListViews will  should  recycle and update on it s own   Here s a brief activity example with AlertDialogs   adapter   new MyListAdapter this       lv    ListView  findViewById android R id list       lv setAdapter adapter       lv setOnItemClickListener new OnItemClickListener         public void onItemClick AdapterView lt   gt  a  View v  int position  long id            AlertDialog Builder adb new AlertDialog Builder MyActivity this           adb setTitle  Delete             adb setMessage  Are you sure you want to delete     position           final int positionToRemove   position          adb setNegativeButton  Cancel   null           adb setPositiveButton  Ok   new AlertDialog OnClickListener                 public void onClick DialogInterface dialog  int which                    MyDataObject remove positionToRemove                   adapter notifyDataSetChanged                             adb show

User · Answer

You should use only one adapter binded with the list of data you need to list When you need to remove and replace all items  you have to clear all items from data-list using  list clear    and then add new data using  list addAll List     here an example   List lt String gt  myList   new ArrayList lt String gt     ArrayAdapter lt String gt  adapter   new ArrayAdapter lt String gt  this        android R layout simple list item 1  myList   listview setAdapter adapter   listview setOnItemClickListener this    populateList       List lt String gt  result   getDataMethods        myList addAll result      adapter notifyDataSetChanged       repopulateList       List lt String gt  result   getDataMethods        myList clear       myList addAll result      adapter notifyDataSetChanged

[android] Remove ListView items in Android

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