iOS8中的地址簿授权

在iOS 7中,系统询问用户是否允许我的应用程序访问他的地址簿,但是因为iOS8没有任何请求.每次我在启动“MyGetAddressesOfContacts”函数之前检查ABAddressBookGetAuthorizationStatus时,Status等于kABAuthorizationStatusNotDetermined.
就像你在这里看到的：

if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusDenied)
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"No permission" message:@"This App has no permition to access your contacts. Please check it in your privacy settings of your device." delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
    [alert show];

    return nil;
}

// This AlertView pops up every time!
if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined)
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Why this App needs your contacts" message:@"In the following your device will ask you whether this App is allowed to access your contacts. [...]" delegate:self cancelButtonTitle:@"I understand" otherButtonTitles: nil];

    [alert show];
}

在此检查之后,我将启动MyGetAddressesOfContacts函数,如下所示：

ABAddressBookRef addressBook = ABAddressBookCreate();
NSArray *contactArr = (NSArray *)CFBridgingrelease(ABAddressBookcopyArrayOfAllPeople(addressBook));
NSMutableDictionary *dPersons = [[NSMutableDictionary alloc] init];

for (int i = 0; i < [contactArr count]; i++)
{
    ABRecordRef person = (ABRecordRef)CFBridgingRetain([contactArr objectAtIndex:i]);
    Nsstring *firstName = (__bridge_transfer Nsstring*)ABRecordcopyValue(person,kABPersonFirstNameProperty);
    Nsstring *lastName = (__bridge_transfer Nsstring*)ABRecordcopyValue(person,kABPersonLastNameProperty);
    Nsstring *sPersonName = [Nsstring stringWithFormat:@"%@ %@",firstName,lastName];

    ABMultiValueRef address = ABRecordcopyValue(person,kABPersonAddressproperty);
    Nsstring *sAddress;

    for(CFIndex j = 0; j < ABMultiValueGetCount(address); j++)
    {
        CFDictionaryRef addressDict = ABMultiValuecopyValueAtIndex(address,j);

        CFStringRef streetValue = CFDictionaryGetValue(addressDict,kABPersonAddressstreetKey);
        CFStringRef cityValue = CFDictionaryGetValue(addressDict,kABPersonAddressCityKey);
        CFStringRef countryValue = CFDictionaryGetValue(addressDict,kABPersonAddressCountryKey);

        sAddress = [Nsstring stringWithFormat:@"%@ %@,%@",streetValue,cityValue,countryValue];
        [dPersons setobject:sAddress forKey: [Nsstring stringWithFormat:@"%@%d %ld",@"AddressFromNameID",i,j]];
    }

    [dPersons setobject:sPersonName forKey: [Nsstring stringWithFormat:@"%@ %d",@"NameWithID",i]];
}

return dPersons;

希望有人能提供帮助.