Adding contacts using ContactsContract in batch

Can anyone please help me on adding new contacts in address book and apply them in batch by using new ContactsContract API? I could not find a proper tutorial on this.

I am able to add a single contact. But batch update fails with Unknown contacts being added.

Currently I am looping through while loop while collecting info. of users to write, store it in the ArrayList<ContentProviderOperation> and applying and

ContentProviderResult[] result = getContentResolver().applyBatch(ContactsContract.AUTHORITY, op_list);

But only one contact is updated with name and other are updated as unknown contacts.

Please help with a sample code which adds the fields like name,nickname,mobile,title,email,Skype id,work-country etc.

Any help ? Thanks .

This is my code that worked, you can add the fields as you require for other values:

int backRefIndex = 0

ArrayList<ContentProviderOperation> op_list = new ArrayList<ContentProviderOperation>();
                        
op_list.add(ContentProviderOperation.newInsert(RawContacts.CONTENT_URI).withValue(RawContacts.ACCOUNT_TYPE, null).withValue(RawContacts.ACCOUNT_NAME, null) 
                            .build());      
op_list.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI).withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, backRefIndex).withValue(ContactsContract.Data.MIMETYPE,ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE).withValue(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME, "Contact_name").build());

op_list.add(ContentProviderOperation.newInsert(Data.CONTENT_URI).withValueBackReference(Data.RAW_CONTACT_ID,backRefIndex).withValue(Phone.MIMETYPE,Phone.CONTENT_ITEM_TYPE).withValue(Phone.NUMBER,"1234567890").withValue(Phone.TYPE,Phone.TYPE_MOBILE).withValue(Phone.TYPE, Phone.TYPE_WORK).build());

try {
    ContentProviderResult[] result = context.getContentResolver().applyBatch(ContactsContract.AUTHORITY, op_list);
} catch (OperationApplicationException exp) {
    exp.printStackTrace();
} catch (RemoteException exp) {
    exp.printStackTrace();
}