application crashes at ABMultiValueRef

Question

I am trying to access address book emails of iPad.

The part of code is :

ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);
ABRecordRef recordRef = ABAddressBookCopyDefaultSource(addressBookRef);
CFArrayRef arrayRef  = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBookRef, recordRef, kABPersonSortByFirstName);

for(int i = 0;i<ABAddressBookGetPersonCount(addressBookRef);i++)
{
      ABRecordRef ref = CFArrayGetValueAtIndex(arrayRef, i);
      ABMultiValueRef emails = ABRecordCopyValue(ref, kABPersonEmailProperty);
      .
      .
      .
      .

The crash is reproducible only on client iPad-Mini. we tried to reproduce crash but its not happening.

After analyzing the debug build we got to know that crash is happening in Line "ABMultiValueRef emails = ABRecordCopyValue(ref, kABPersonEmailProperty);". The crash is not happening every time. It happening once in 2-3 attempt to access addressBook emails. only for client.

My doubt is "ABRecordRef ref = CFArrayGetValueAtIndex(arrayRef, i);" may be nil or empty. But in what case this may be nil or empty?

can any one help me to know what may be the reason for crash.

What does the crash log say? – n00bProgrammer Sep 09 '14 at 05:45 — n00bProgrammer, Sep 09 '14 at 05:45
@n00bProgrammer: sorry we cant get crash logs form client.. – Raju Sep 09 '14 at 05:52 — Raju, Sep 09 '14 at 05:52

score 0 · Accepted Answer · answered Sep 09 '14 at 05:45

The reason might be that ABAddressBookGetPersonCount returns the number of all people in the address book, whereas ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering returns all people of only 1 source, and their number might be different. Additionally I suggest that you check for errors like below. Of course you had also to CFRelease any returned CF object.

    CFErrorRef error = nil;
    ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, &error);
    if (addressBookRef != nil) {
        ABRecordRef recordRef = ABAddressBookCopyDefaultSource(addressBookRef);
        CFArrayRef arrayRef  = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBookRef, recordRef, kABPersonSortByFirstName);
        const unsigned int nrAllPeopleInSource = (unsigned int)CFArrayGetCount (arrayRef);
        if (arrayRef != nil) {
//            for(int i = 0;i<ABAddressBookGetPersonCount(addressBookRef);i++)
            /*
             ABAddressBookGetPersonCount returns the number of all people in the address book, whereas
             ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering returns all people of only 1 source, and their number might be different.
             */
            for(int i = 0;i<nrAllPeopleInSource;i++)
            {
                ABRecordRef ref = CFArrayGetValueAtIndex(arrayRef, i);
                ABMultiValueRef emails = ABRecordCopyValue(ref, kABPersonEmailProperty);
                // ... further code
            }
        } else {
            // no person found
        }
    } else {
        // addressbook could not be opened, lookup error
    }

Can u please tell in what scenario can we reproduce crash? because its not happening on our device? or how can we make "ABRecordRef" nil? — Raju, Sep 09 '14 at 05:59
To reproduce the crash on your device, it should be enough to add a further source to your addressbook that contains at least one person. Common sources are iCloud or an additional CardDAV server. I guess your default source is iCloud. An additional CardDAV server can be e.g. created for testing purposes using the OSX server. — Reinhard Männer, Sep 09 '14 at 06:18
can u please tell, if "ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering" returns all people of only 1 source.. How to get all people in all source..? — Raju, Sep 10 '14 at 10:24
You could use ABAddressBookCopyArrayOfAllPeople, but than you had to sort them by your own. One more thing: You could also enable a further CardDAV server, if you have e.g. the Facebook app installed, and you switch in the systems settings / Facebook contacts to ON. — Reinhard Männer, Sep 10 '14 at 13:21

application crashes at ABMultiValueRef

1 Answers1