IOS7中讀取不到通訊錄的問題 大部分原因是沒有判斷系統版本來構造ABAddressBookRef

下面是兩個本人程序中的兩個方法，請參考。所有版本中已測試沒有問題。

//獲取通訊錄
-(void)GetUserAddressBook
{
    //獲取通訊錄權限
    ABAddressBookRef ab = NULL;
    // ABAddressBookCreateWithOptions is iOS 6 and up.
    if (&ABAddressBookCreateWithOptions) {
        CFErrorRef error = nil;
        ab = ABAddressBookCreateWithOptions(NULL, &error);
        
        if (error) { NSLog(@"%@", error); }
    }
    if (ab == NULL) {
        ab = ABAddressBookCreate();
    }
    if (ab) {
        // ABAddressBookRequestAccessWithCompletion is iOS 6 and up. 適配IOS6以上版本
        if (&ABAddressBookRequestAccessWithCompletion) {
            ABAddressBookRequestAccessWithCompletion(ab,
                                                     ^(bool granted, CFErrorRef error) {
                                                         if (granted) {
                                                             // constructInThread: will CFRelease ab.
                                                             [NSThread detachNewThreadSelector:@selector(constructInThread:)
                                                                                      toTarget:self
                                                                                    withObject:CFBridgingRelease(ab)];
                                                         } else {
                                                             //                                                             CFRelease(ab);
                                                             // Ignore the error
                                                         }
                                                     });
        } else {
            // constructInThread: will CFRelease ab.
            [NSThread detachNewThreadSelector:@selector(constructInThread:)
                                     toTarget:self
                                   withObject:CFBridgingRelease(ab)];
        }
    }
}
//獲取到addressbook的權限
-(void)constructInThread:(ABAddressBookRef) ab
{
    NSLog(@"we got the access right");
    CFArrayRef results = ABAddressBookCopyArrayOfAllPeople(ab);
    NSMutableArray* contactArray = [[NSMutableArray alloc]init];
    for(int i = 0; i < CFArrayGetCount(results); i++)
    {
        ABRecordRef person = CFArrayGetValueAtIndex(results, i);
        //姓
        NSString *firstName = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonFirstNameProperty));
        //姓音標
//        NSString *firstNamePhonetic = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonFirstNamePhoneticProperty));
        //名
        NSString *lastname = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonLastNameProperty));
        //名音標
//        NSString *lastnamePhonetic = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonLastNamePhoneticProperty));
        //公司
        NSString *Organization = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonOrganizationProperty));
        //讀取jobtitle工作
//        NSString *jobtitle = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonJobTitleProperty));
        //讀取department部門
        NSString *department = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonDepartmentProperty));
        //讀取birthday生日
        NSDate *birthday = (NSDate*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonBirthdayProperty));
        //讀取nickname呢稱
        double birthdayString = [birthday timeIntervalSince1970];
        NSString *nickname = (NSString*)CFBridgingRelease(ABRecordCopyValue(person, kABPersonNicknameProperty));
        //讀取電話多值
        NSString* phoneString = @"";
        ABMultiValueRef phone = ABRecordCopyValue(person, kABPersonPhoneProperty);
        for (int k = 0; k