问题: 当执行下面InsertNewMobileContactsBriefToClient方法的时候。会有80%+的几率出现系统闪退!

• 程序块

-(void)InsertNewMobileContactsBriefToClient
{
    CFErrorRef myError = NULL;
    ABAddressBookRef addressBook = nil;
    addressBook = ABAddressBookCreateWithOptions(NULL, &myError);
    if(myError)
    {
        if(addressBook)
            CFRelease(addressBook);
        return;
    }
    __weak typeof(self) weakSelf  = self;
    ABAddressBookRequestAccessWithCompletion(addressBook,
                                             ^(bool granted, CFErrorRef error) {
                                                 if (granted) {
                                                     [weakSelf InsertNewContactsToDb:addressBook];
                                                 } else {
                                                     // Handle the error
                                                 }
                                                 
                                                 if(addressBook)
                                                     CFRelease(addressBook);
                                             });
    
}

-(void)InsertNewContactsToDb:(ABAddressBookRef)addressBook
{
    CFArrayRef personArray = ABAddressBookCopyArrayOfAllPeople(addressBook);
    NSInteger count = CFArrayGetCount(personArray);
   NSLog(@"SysContact.InsertNewMobileContactsBriefToClient:手机中共有%ld位联系人",(long)count);
    
    for(int i=0;i<count;i++)
    {
        [NSThread sleepForTimeInterval:0.01];
        ABRecordRef person = CFArrayGetValueAtIndex(personArray, i);
        NSInteger personId = ABRecordGetRecordID(person);
        
        //读入到的记录保存到数据库
    }
    
    NSLog(@"从手机中新导入了%d个联系人..完成！",totalCount);
    if(personArray)
        CFRelease(personArray);
}

通过友盟收集到的日志信息为:[Application received signal SIGSEGV]类型的错误，通过反解析发现
以下代码块会闪退

   if(addressBook)
   CFRelease(addressBook);

解决方法

• 移除方法InsertNewContactsToDb中的以下代码:

      if(personArray)
       CFRelease(personArray);

原来
CFArrayRef personArray = ABAddressBookCopyArrayOfAllPeople ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, &myError) 为同一个addressbook对象。
只能释放一个。

参考地址:
http://stackoverflow.com/questions/1209130/iphone-sdk-exc-bad-access-with-cfrelease-for-abaddressbookref