How to avoid duplicate contact name (data ) while loading contact info to listview?

Question

I am populating contact list details to list view successfully. My code:

  String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + \" ASC\";
         


        

Answer 1

You need to retrieve the data from the Cursor to HashSet (which don't allows duplicate itmes) and then pass the HashSet object to your ListView's Adapter

This is a dump solution but it will help you:

ListView listView;
Set listItems;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    listView = (ListView) findViewById(R.id.listView);
    listItems = new HashSet();

    String order = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC";
    Cursor curLog =  getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null,order); 

    if(curLog != null) {
        while(curLog.moveToNext()) {
            String str = curLog.getString(curLog.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME_PRIMARY));
            listItems.add(str);
        }
    }

    String listString = listItems.toString();
    listString = listString.substring(1,listString.length()-1);
    String[] newList = listString.split(", ");

    ArrayAdapter adapter = new ArrayAdapter(MainActivity.this, android.R.layout.simple_list_item_1, newList);
    listView.setAdapter(adapter);        
}

Good luck..