Android Applicaiton - How to get birthday of a con

问题:

I am working on an android application for which I need to match the birthday of each contact against current date and if positive, process some business logic, which needs the complete contact details.

I have found ways to read birthdays of contacts or the contacts themselves separately, but am confused as to how to combine both. Can somebody please provide some direction.

Thanks

回答1:

Found the answer after some looking out on the web. The way this has to be done is :

• Get list of contacts
• For each contact, get contactId
• Get birthday using the contactid

Following is the code snippet :

ContentResolver cr = getContentResolver(); //getContnetResolver()
String[] projection = new String[] { ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME };

Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, projection, null, null,
            ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");

while (cur.moveToNext()) {

   Map<String, String> contactInfoMap = new HashMap<String, String>();
   String contactId = cur.getString(cur.getColumnIndex(ContactsContract.Data._ID));
   String displayName =  cur.getString(cur.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));     

    String columns[] = {
         ContactsContract.CommonDataKinds.Event.START_DATE,
         ContactsContract.CommonDataKinds.Event.TYPE,
         ContactsContract.CommonDataKinds.Event.MIMETYPE,
    };

    String where = Event.TYPE + "=" + Event.TYPE_BIRTHDAY + 
                    " and " + Event.MIMETYPE + " = '" + Event.CONTENT_ITEM_TYPE + "' and "                  + ContactsContract.Data.CONTACT_ID + " = " + contactId;

    String[] selectionArgs = null;
    String sortOrder = ContactsContract.Contacts.DISPLAY_NAME;

    Cursor birthdayCur = cr.query(ContactsContract.Data.CONTENT_URI, columns, where, selectionArgs, sortOrder); 
    if (birthdayCur.getCount() > 0) {
        while (birthdayCur.moveToNext()) {
             String birthday = birthdayCur.getString(birthdayCur.getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE));
        }
    }
    birthdayCur.close();

   }    

    cur.close();