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POWhy the addressbook can not remain up-to-date with ios?
 

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  1. POWhy the addressbook can not remain up-to-date with ios?
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    <p>I'm writing a custom addressbook app in ios and I use a singleton addressbookRef.</p> <p>Here is my operation steps:</p> <pre><code>+ (ABAddressBookRef) sharedAddressBook { static ABAddressBookRef ref = nil; if ( ref == nil ) { ref = ABAddressBookCreate(); } return ( ref ); } </code></pre> <p>step1: Open my addressbook app</p> <pre><code> ABAddressBookRef addressBook = [ABAddressBook sharedAddressBook]; ABRecordRef person = ABAddressBookGetPersonWithRecordID( addressBook, 83 ); NSString* name= ABRecordCopyValue(person,kABPersonFirstNameProperty); NSLog(@"%@",name); </code></pre> <p>console print "aaa".</p> <p>step2:</p> <p>quit my app(enterBackground, not kill), change the "aaa" person name to "bbb" by using the system dialer.</p> <p>step3:</p> <p>open my app(enterForeground), do the same thing</p> <pre><code>ABAddressBookRef addressBook = [ABAddressBook sharedAddressBook]; ABRecordRef person = ABAddressBookGetPersonWithRecordID( addressBook, 83 ); NSString* name= ABRecordCopyValue(person,kABPersonFirstNameProperty); NSLog(@"%@",name); </code></pre> <p>console print "aaa".</p> <p><strong>My question is</strong></p> <p>1.Why the console print "aaa", not "bbb" when used the old addressBookRef? When i change the [ABAddressBook sharedAddressBook] to ABAddressBookCreate(), everything seems to be ok. Why the old addressBookRef can not keep up-to-date?</p> <p>2.Should I need do ABAddressBookCreate() at enterForeground everytime?</p> <p>3.is the recordID changed when I edit the person info? I suspect.</p>
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    1. USNiru Mukund Shah
    1. USbigjava
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    1. COthanks.I used the solution below: ABAddressBookRegisterExternalChangeCallback is being invoked when I resume back my application.But my question still exists,like this:stackoverflow.com/questions/7138718/… Should I need to recreate the ABAddressBookRef = ABAddressBookCreate() in MyAddressBookExternalChangeCallback? the data is stale if i just use ABAddressBookSave(the old ABAddressBookRef).
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      1. USbigjava
    2. COrecord ID remains same.. onlything is you need new Addressbook reference to get new data. It works like database instances.
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      1. USibiren
 

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