CODEWITHSUNDEEP
androidlistviewarraylist
NewDroidDev
NewDroidDev

Reputation: 1686

How to delete data in list view where its data came from the array list in android

I have a button and when I click it I want to delete the value of arraylist first index, and yes the first index in the array list is deleted. But the data in my listview that came from my arraylist is not deleted.
Here I got so far

public ArrayList<String> imagesFileName = new ArrayList<String>();

 mylist = new ArrayList<HashMap<String, String>>();
            for (int i = 0; i < imagesFileName.size(); i++) {
            HashMap<String, String> map = new HashMap<String, String>();
            map.put(FILE_NAME, filename[i]);
            map.put(DESCRIPTION, "desc");
            map.put(UPLOADEDBY, "uploadby");
            map.put(DATE_UPLOAD, "date_upload");
            map.put(ACTION, "delete");
            map.put(ID, String.valueOf(i));
            mylist.add(map);
    }


     adapter = new CustomArrayAdapter(getApplicationContext(), mylist, R.layout.attribute_ireport_list, 
             new String[]{FILE_NAME, DESCRIPTION, UPLOADEDBY, DATE_UPLOAD, ACTION, ID},
             new int[]{R.id.tv_File, R.id.txt_Desc, R.id.tv_UploadedBy, R.id.tv_DateUploaded, R.id.tv_Action, R.id.txt_id}, true);

        lv_iReport.setAdapter(adapter);
    //code for delete of first index
    btn_Upload = (Button) findViewById(R.id.button1);
    btn_Upload.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            imagesFileName.remove(0);
            adapter = new CustomArrayAdapter(getApplicationContext(), mylist, R.layout.attribute_ireport_list, 
                     new String[]{FILE_NAME, DESCRIPTION, UPLOADEDBY, DATE_UPLOAD, ACTION, ID},
                     new int[]{R.id.tv_File, R.id.txt_Desc, R.id.tv_UploadedBy, R.id.tv_DateUploaded, R.id.tv_Action, R.id.txt_id}, true);

                lv_iReport.setAdapter(adapter);

            Toast.makeText(getApplicationContext(), "Deleted", Toast.LENGTH_LONG).show();
        }
    });

Upvotes: 1

Views: 478

Answers (2)

Karn Shah
Karn Shah

Reputation: 501

try this:

 btn_Upload.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        mylist.remove(0);
        adapter.notifyDataSetInvalidated();       
    }
});

Upvotes: 2

marshallino16
marshallino16

Reputation: 2671

Simply use that :

myList.remove(object);
notifyDataSetChanged();

Upvotes: 0

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