ContentProvider

public List<Fri> lodcontacts(){    //得到客户端    ContentResolver cr = getContentResolver();    Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);    if(cursor.moveToFirst()){        do {            Fri fri = new Fri();            //联系人的姓名            String contactsName = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));            //联系人在数据库中的ID            String pId = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));            Cursor phoneCursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + pId, null, null);            String nuber=null;            if(phoneCursor.moveToFirst()){                do {                    //电话号码                    nuber=phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));                }while (phoneCursor.moveToNext());                fri.name=contactsName;                fri.phone=nuber;                list.add(fri);            }        }while (cursor.moveToNext());    }    return list;}

public class Fri {   public String name;   public String phone;}