Adding And Deleting Contact By Code?

to display the contact i have used this coding

Code:
Cursor cursor = getContacts();
String[] fields = new String[] { ContactsContract.Data.DISPLAY_NAME };
//this.setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_checked,));
SimpleCursorAdapter adapter =
new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_checked, cursor, fields,
newint[] { R.id.contactEntryText });
mContactList.setAdapter(adapter);

exception is thrown, i got successful in textview but i want it in listview(scrollable) to add the contact, i have used the code

Code:

ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>();
ops.add(ContentProviderOperation.newInsert(Data.CONTENT_URI)
.withValue(Data.RAW_CONTACT_ID,0)
.withValue(Data.MIMETYPE, Phone.CONTENT_ITEM_TYPE)
.withValue(Phone.NUMBER, "1-800-GOOG-411")
.withValue(Phone.TYPE, Phone.TYPE_CUSTOM)
.withValue(Phone.LABEL, "free directory assistance")

[code]....

i both add and delete i am not getting any error, but it is not reflected nither in the contact nor in the textView.