How to remove listview all items

Question

In my app  if you click on a button then i want to remove all the listview items  Here  i am using the base adapter for adding the items to the list view    How can i remove the listview items dynamically

User · Answer

An other approach after trying the solutions below. When you need it clear, just initialise your list to new clear new list.

List<ModelData> dataLists = new ArrayList<>();
                RaporAdapter adapter = new RaporAdapter(AyrintiliRapor.this, dataLists);
                listview.setAdapter(adapter);

Or set visibility to Gone / Invisible up to need

img_pdf.setVisibility(View.INVISIBLE);

User · Answer

if you used List object and passed to the adapter you can remove the value from the List object and than call the notifyDataSetChanged   using adapter object   for e g    List lt String gt  list   new ArrayList lt String gt     ArrayAdapter adapter    adapter   new ArrayAdapter lt String gt  DeleteManyTask this               android R layout simple list item 1               String   list toArray new String 0      listview    ListView  findViewById R id list   listview setAdapter adapter    listview setAdapter listAdapter     for remove do this way  list remove index     or list clear    adpater notifyDataSetChanged      or without list object remove item from list   adapter clear    adpater notifyDataSetChanged

User · Answer

ListView operates based on the underlying data in the Adapter  In order to clear the ListView you need to do two things    Clear the data that you set from adapter   Refresh the view by calling notifyDataSetChanged   For example  see the skeleton of SampleAdapter below that extends the BaseAdapter   public class SampleAdapter extends BaseAdapter        ArrayList lt String gt  data       public SampleAdapter             this data   new ArrayList lt String gt                public int getCount             return data size               public Object getItem int position            return data get position              public long getItemId int position            return position             public View getView int position  View convertView  ViewGroup parent               your View         return null            Here you have the ArrayList lt String gt  data as the data for your Adapter  While you might not necessary use ArrayList  you will have something similar in your code to represent the data in your ListView  Next you provide a method to clear this data  the implementation of this method is to clear the underlying data structure   public void clearData            clear the data     data clear        If you are using any subclass of Collection  they will have clear   method that you could use as above   Once you have this method  you want to call clearData and notifyDataSetChanged on your onClick thus the code for onClick will look something like       listView is your instance of your ListView SampleAdapter sampleAdapter    SampleAdapter listView getAdapter    sampleAdapter clearData        refresh the View sampleAdapter notifyDataSetChanged

User · Answer

You can do this   listView setAdapter null

User · Answer

use any one of the bellow options which suites your requirement   listview removeViews 1 listview getChildCount       or  listview removeViewInLayout your view

User · Answer

I just clean the arraylist   try values clear     values   new ArrayList lt String gt     values clear     ArrayAdapter  lt String gt  adapter  adapter   new ArrayAdapter lt String gt  this  R layout list android R id text1  values    lista setAdapter adapter

User · Answer

You can only use   lv setAdapter null

User · Answer

I used this statement and it worked for me      setListAdapter null    This one calls a default constructor that does nothing in a class extends BaseAdapter

User · Answer

For me worked this way   private ListView yourListViewName  private List lt YourClassName gt  yourListName          yourListName   new ArrayList lt  gt     yourAdapterName   new yourAdapterName this  R layout your layout name  yourListName           if  yourAdapterName getCount    gt  0       yourAdapterName clear       yourAdapterName notifyDataSetChanged       yourAdapterName add new YourClassName yourParameter1  yourParameter2         yourListViewName setAdapter yourAdapterName

User · Answer

Remove the data from the adapter and call adapter notifyDataSetChanged

User · Answer

Call setListAdapter   again  This time with an empty ArrayList

[android] How to remove listview all items

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