How to Remove a Contact Programmatically in Android

How to delete a particular contact using contact id?

try the following code:

            final ArrayList ops = new ArrayList();
        final ContentResolver cr = getContentResolver();
        ops.add(ContentProviderOperation
                .newDelete(ContactsContract.RawContacts.CONTENT_URI)
                .withSelection(
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID
                                + " = ?",
                        new String[] { selected_contact_IDfromlist })
                .build());
        AlertDialog alertDialog = new AlertDialog.Builder(this).create();
        alertDialog.setTitle("Delete This Contact!");
        alertDialog.setMessage("Are you Sure you want to delete this contact?");
        alertDialog.setButton(getString(R.string.callLog_delDialog_yes), new DialogInterface.OnClickListener() {    // DEPRECATED
          public void onClick(DialogInterface dialog, int which) {
            try {
                cr.applyBatch(ContactsContract.AUTHORITY, ops);
                background_process();
                ops.clear();
            } catch (OperationApplicationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

            } catch (RemoteException e) {
                // System.out.println(" length :"+i);
            }
                return;
        } }); 
        alertDialog.setButton2(getString(R.string.callLog_delDialog_no), (DialogInterface.OnClickListener)null);    // DEPRECATED
        try {
            alertDialog.show();
        }catch(Exception e) {
            //              Log.e(THIS_FILE, "error while trying to show deletion yes/no dialog");
        }

Delete a single phone type number from a contact

Each number from same contact has it's own ID. You should use it for deleting. But you also need contact ID. You can get it using this line of code:

contactID = cursor.getInt(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));

Then you delete the number using following code:

Cursor cur = contentResolver.query(RawContacts.CONTENT_URI, 
            new String[]{RawContacts._ID},
            RawContacts.CONTACT_ID + "=?", 
            new String[] {contactID.toString()}, null);
    int rowId=0;;
    if(cur.moveToFirst()){
        rowId = cur.getInt(cur.getColumnIndex(RawContacts._ID));
    }

    ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>();
    String selectPhone = Data.RAW_CONTACT_ID + " = ? AND " + 
                         Data.MIMETYPE + " = ? AND " + 
                         Phone._ID + " = ?";
    String[] phoneArgs = new String[] { Integer.toString(rowId), 
                                        Phone.CONTENT_ITEM_TYPE, 
                                        ID.toString()};

    ops.add(ContentProviderOperation.newDelete(Data.CONTENT_URI)
            .withSelection(selectPhone, phoneArgs).build());
    try {
        contentResolver.applyBatch(ContactsContract.AUTHORITY, ops);
    } catch (RemoteException e) {
        e.printStackTrace();
    } catch (OperationApplicationException e) {
        e.printStackTrace();
    }

Android Studio Delete contact

try this.

for delete.

public static void deleteContact(ContentResolver contactHelper, String 
number) {
ArrayList<ContentProviderOperation> ops = new 
ArrayList<ContentProviderOperation>();
String[] args = new String[] { String.valueOf(getContactID(contactHelper, 
number))};
ops.add(ContentProviderOperatio.newDelete(RawContacts.CONTENT_URI).withSelecti
  on(RawContacts.CONTACT_ID + "=?", args).build());
 try {
  contactHelper.applyBatch(ContactsContract.AUTHORITY, ops);
  } catch (RemoteException e) {
  e.printStackTrace();
 } catch (OperationApplicationException e) {
e.printStackTrace();
}
}

and getid

private static long getContactID(ContentResolver contactHelper,String 
number) {
Uri contactUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, 
Uri.encode(number));
String[] projection = { PhoneLookup._ID };
Cursor cursor = null;
try {
cursor = contactHelper.query(contactUri, projection, null, null,null);
if (cursor.moveToFirst()) {
int personID = cursor.getColumnIndex(PhoneLookup._ID);
return cursor.getLong(personID);
}
return -1;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (cursor != null) {
cursor.close();
cursor = null;
}
}
return -1;
}

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