How to remove a contact programmatically in android

Question

I try the following code to remove contact with a specified number:

private void removeContact(Context context, String phone) {
    //context.getContentResol         


        

Answer 1

A better way to delete a contact is by removing all raw contacts using contact id

    final ArrayList ops = new ArrayList();
    final ContentResolver cr = getContentResolver();
    ops.add(ContentProviderOperation
            .newDelete(ContactsContract.RawContacts.CONTENT_URI)
            .withSelection(
                    ContactsContract.RawContacts.CONTACT_ID
                            + " = ?",
                    new String[] { allId.get(i) })
            .build());

        try {
            cr.applyBatch(ContactsContract.AUTHORITY, ops);
            int deletecontact = serialList.get(allId.get(i));

        } catch (RemoteException e) {
            e.printStackTrace();
        } catch (OperationApplicationException e) {
            e.printStackTrace();
        }
        //background_process();
        ops.clear();
    }

and dont forget to add permissions