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<String> adapter = new ArrayAdapter<String>(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<String> adapter1 = new ArrayAdapter<String>(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.

score 80 · Answer 1 · edited Oct 17 '16 at 05:20

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<?> 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();
        }
    });

MyDataObject would be whatever your ultimate backing store is. Most of the time, you don't just want to remove items from being DISPLAYED, you also want to remove them from some database, or some server, or some file storage. Esharp was just leaving a reminder that you need to remember to really delete the data, in addition to removing it from display. — Nate, Aug 19 '11 at 22:32

score 26 · Answer 2 · answered Nov 03 '10 at 06:51

26

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

answered Nov 03 '10 at 06:51

Labeeb Panampullan

34,521
28
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score 19 · Answer 3 · answered Apr 01 '10 at 07:51

19

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

answered Apr 01 '10 at 07:51

Janusz

187,060
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6

There is no clear() for my CustomAdapter that extends from BaseAdapter! – Dr.jacky Aug 02 '14 at 17:20

score 15 · Answer 4 · answered Jan 17 '12 at 10:55

15

int count = adapter.getCount();
for (int i = 0; i < count; i++) {
 adapter.remove(adapter.getItem(i));
}

then call notifyDataSetChanged();

answered Jan 17 '12 at 10:55

Rex

193
1
6

7

Should be `adapter.remove(adapter.getItem(0));`? – Ishtar Jan 17 '12 at 11:34
`adapter.remove(adapter.getItem(0));` this will only remove the first element but if you want to remove all of them then go for what i have posted.. – Rex Jan 18 '12 at 09:57
4

Ishtar's comment is correct. The above code will attempt to remove items past the end of the list. Each iteration through the list removes one item, so by the time i is equal to (count - 1), you have a one-item list and getItem(i) will fail. – Eddie Sullivan Jan 02 '13 at 14:17
you can simply items from end to start in this way: for (int i = count-1; i >= 0; i--) { adapter.remove(adapter.getItem(i)); } – Maziar Aboualizadehbehbahani Jan 18 '13 at 14:24
3

IndexOutOfRange approaching. – Niki Romagnoli Nov 06 '14 at 17:14

score 10 · Answer 5 · answered Nov 25 '11 at 22:44

10

Remove it from the adapter and then notify the arrayadapter that data set has changed.

m_adapter.remove(o);
m_adapter.notifyDataSetChanged();

answered Nov 25 '11 at 22:44

Atma

29,141
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score 4 · Answer 6 · answered Aug 28 '13 at 14:54

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<String> myList = new ArrayList<String>();
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,       android.R.layout.simple_list_item_1, myList);
listview.setAdapter(adapter);
listview.setOnItemClickListener(this);

populateList(){
   List<String> result = getDataMethods();

   myList.addAll(result);
   adapter.notifyDataSetChanged();
}

repopulateList(){
   List<String> result = getDataMethods();

   myList.clear();
   myList.addAll(result);
   adapter.notifyDataSetChanged();
}

score 4 · Answer 7 · answered Mar 17 '11 at 05:28

            names = db.getSites();
            la = new ArrayAdapter<String>(EditSiteList.this,
                    android.R.layout.simple_list_item_1, names);
            EditSiteList.this.setListAdapter(la);
            listview.invalidateViews();

this code works fine for me.

score 3 · Answer 8 · answered May 29 '15 at 02:46

Try this code, it works for me.

public class Third extends ListActivity {
private ArrayAdapter<String> adapter;
private List<String> 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<String>();
     Collections.addAll(liste, values);
     adapter = new ArrayAdapter<String>(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();
  }
}

score 1 · Answer 9 · answered Jan 25 '15 at 14:21

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<Track> 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<?> 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();
        }

    });

}

score 1 · Answer 10 · answered Mar 06 '15 at 11:57

1

It's simple .First you should clear your collection and after clear list like this code :

 yourCollection.clear();
 setListAdapter(null);

answered Mar 06 '15 at 11:57

zheek

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score 1 · Answer 11 · answered Oct 28 '19 at 13:16

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<?> 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;
        }
    });

score 0 · Answer 12 · edited Mar 22 '23 at 10:51

0

Try this:

String text = ( (TextView) view).getText().toString();<br>
adapter.remove(text);

edited Mar 22 '23 at 10:51

kometen

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answered Sep 14 '21 at 15:43

Abhinav Pandey

87
1
2

Remove ListView items in Android

12 Answers12

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