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我正在尝试创建一个具有自定义界面的应用程序，用于搜索一个人的通讯录。搜索本地通讯录似乎很容易，但我不知道如何在 Exchange 通讯录源中搜索个人/记录（即 ABSourceType == kABSourceTypeExchangeGAL）。我正在使用以下代码查找 Exchange 通讯录源并对其进行查询，但我只得到一个空数组。我知道在 Exchange 通讯录中询问整个人员列表不可能返回所有条目，但是当我查询它时，我会期望该列表的某个子集。同样，我得到一个空数组。

如何在 Exchange 通讯录源中搜索联系人？

#define CFNIL(x) if(x){CFRelease(x); x=nil;}
    //code

    ABAddressBookRef _addressbook = ABAddressBookCreate();
    CFArrayRef allSources = ABAddressBookCopyArrayOfAllSources(_addressbook);
    ABRecordRef exchangeSource;

    for(CFIndex i =0; i<CFArrayGetCount(allSources); i++)
    {
        ABRecordRef source = (ABRecordRef)CFArrayGetValueAtIndex(allSources, i);

        NSNumber *sourceTypeNumber = (NSNumber*)((CFNumberRef)ABRecordCopyValue(source, kABSourceType));
        NSString *sourceTypeName = (NSString *)((CFStringRef)ABRecordCopyValue(source, kABSourceNameProperty));

        int sourceType = [sourceTypeNumber intValue];
        if (sourceType == kABSourceTypeExchangeGAL) 
        {
            exchangeSource = source;
        }
        [sourceTypeNumber release];
        [sourceTypeName release];
    }

    if(exchangeSource)
    {
        /*
         This finds matches in the local device addressbook
        NSArray *people = (NSArray *)ABAddressBookCopyPeopleWithName(_addressbook, CFSTR("joe"));
        for(int i=0;i<[people count]; i++)
        {
            ABRecordRef person = (ABRecordRef)[people objectAtIndex:i];
            ABMultiValueRef emails = (ABMultiValueRef)ABRecordCopyValue(person, kABPersonEmailProperty);
            NSLog(@"emails: %@",emails);
            [((NSArray*)emails) release];
        }
        [people release];
         */

        //this array is always empty
        CFArrayRef search = ABAddressBookCopyArrayOfAllPeopleInSource (_addressbook,exchangeSource);
        NSLog(@"%@", search);
        CFNIL(search);
    }
    CFNIL(exchangeSource);
    CFNIL(_addressbook);
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