how many contacts in contact list

问题:

How can I tell how many contacts there are in the contact list? I got the contact number, but one person can have more than one contact and I want to account for this in finding the total number of contacts in the contact list.

回答1:

To find the count of phone numbers of all the contacts

Cursor cursor =  managedQuery(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);

int count = cursor.getCount();

To find the count of all the phone numbers of a particular RawContactID (pass the contact id value in rawContactId).

Cursor cursor =  managedQuery(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.RAW_CONTACT_ID + " = " + rawContactId, null, null);

    int count = cursor.getCount();

The number of contacts displayed in the ContactsListActivity consists can be determined by following query.

Cursor cursor =  managedQuery(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);

int count = cursor.getCount();

However if a person has been entered under multiple accounts then only a single instance is obtained by the above query as ContactsContract.Contacts combines all such contacts.

Cursor cursor =  managedQuery(RawContacts.CONTENT_URI, null, null, null, null);

int count = cursor.getCount();

The relation between ContactsContract.Contacts and RawContacts can be found out at http://developer.android.com/resources/articles/contacts.html

Hope this resolves your doubt!

回答2:

A really old thread, but if you want to count contacts WITH phone numbers you can use this:

Cursor cursor =  managedQuery(ContactsContract.Contacts.CONTENT_URI, null, ContactsContract.Contacts.HAS_PHONE_NUMBER, null, null);
int count = cursor.getCount();

Of course managedQuery is deprecated now, but this can help in a bind :)