无法使用addressBook框架在AddressBook中保存名称和电子邮件

Question

在我的应用程序中，我试图保存姓名和联系人号码以进行通讯录。

但是，当保存(使用下面的代码)时，我得到了错误：

/Users/mobility/Desktop/STAXApplication/STAXApplication/AccountsAndContactsViewController.m:739:61: Implicit conversion of Objective-C pointer type 'NSString *' to C pointer type 'CFTypeRef' (aka 'const void *') requires a bridged cast

我使用的代码是：

-(void)addRecord:(NSString *)name email:(NSString *)email number:(NSString *)number
{
    NSString *Name = name;
    NSString *Email = email;
    NSString *Number = number;

    ABRecordRef newPerson = ABPersonCreate();

    ABRecordSetValue(newPerson, kABPersonFirstNameProperty, Name, NULL);
    ABRecordSetValue(newPerson, kABPersonEmailProperty, Email, nil);

    //ABRecordSetValue(newPerson, kABPersonLastNameProperty, @"agrawal", NULL);
    //ABRecordSetValue(newPerson, kABPersonPhoneProperty, CFNu,NULL);

    ABMutableMultiValueRef multiPhone =     ABMultiValueCreateMutable(kABMultiStringPropertyType);

    ABMultiValueAddValueAndLabel(multiPhone, Number, kABPersonPhoneMainLabel, NULL);

    ABRecordSetValue(newPerson, kABPersonPhoneProperty, multiPhone,nil);

    ABAddressBookAddRecord(_addressBook, newPerson, NULL);

    BOOL saved = ABAddressBookSave(_addressBook, NULL);

    if(saved == YES)
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Saved" message:@"the contact has been saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
    }

    else
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@" Not Saved" message:@"Not saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
    }
}

在NSString和const之间存在着一些转换冲突的国王。如何进行转换？？我也用UTF8String ..。但不管用..。

Answer 1

你必须按以下方式架设桥梁

ABRecordSetValue(newPerson, kABPersonFirstNameProperty, (__bridge CFStringRef) Name, NULL);
ABRecordSetValue(newPerson, kABPersonEmailProperty, (__bridge CFStringRef) Email, nil);