iOS plugin and contact view

Hi,

my goal is to add a contact to iOS devices from unity currently I'm using this as my plugin:

 #import "PluginFunctions.h"
 #import "ContactsUI/ContactsUI.h"
 #import "Contacts/Contacts.h"
 
 @implementation iOSPlugin
 
 - (id)init
 {
     self = [super init];
     return self;
 }
 extern "C"{
     void addContact(const char* cName,const char* cCity,const char* cStreet,const char* cPostalCode,const char* cCountry,const char* cPhoneNumber,const char* cEmail,const char* cOrganization,const char* cTitle)
     {
         NSString *name = [NSString stringWithUTF8String:cName];
         NSString *city = [NSString stringWithUTF8String:cCity];
         NSString *street = [NSString stringWithUTF8String:cStreet];
         NSString *postalCode = [NSString stringWithUTF8String:cPostalCode];
         NSString *country = [NSString stringWithUTF8String:cCountry];
         NSString *phoneNumber = [NSString stringWithUTF8String:cPhoneNumber];
         NSString *email = [NSString stringWithUTF8String:cEmail];
         NSString *organization = [NSString stringWithUTF8String:cOrganization];
         NSString *title = [NSString stringWithUTF8String:cTitle];
         NSLog(@"%@", name);
         NSLog(@"%@", city);
         NSLog(@"%@", street);
         NSLog(@"%@", postalCode);
         NSLog(@"%@", country);
         NSLog(@"%@", phoneNumber);
         NSLog(@"%@", email);
         NSLog(@"%@", organization);
         NSLog(@"%@", title);
 
         CNContactStore *store = [[CNContactStore alloc] init];
         
         // create contact
         CNMutableContact *mutContact = [[CNMutableContact alloc] init];
         
         mutContact.givenName = name;
         
         CNMutablePostalAddress *address = [[CNMutablePostalAddress alloc] init];
         address.city = city;
         address.street = street;
         address.city = city;
         address.postalCode = postalCode;
         address.country = country;
         
         CNLabeledValue *labeledValue = [CNLabeledValue labeledValueWithLabel:CNLabelHome value:address];
         mutContact.postalAddresses = @[labeledValue];
         
         CNLabeledValue *phone = [CNLabeledValue labeledValueWithLabel:CNLabelHome value:[CNPhoneNumber phoneNumberWithStringValue:phoneNumber]];
         mutContact.phoneNumbers = @[phone];
         
         CNLabeledValue *mail = [CNLabeledValue labeledValueWithLabel:CNLabelHome value:[NSString stringWithString:email]];
         mutContact.emailAddresses = @[mail];
         
         mutContact.organizationName = organization;
         mutContact.jobTitle = title;
         
         CNSaveRequest *saveRequest = [[CNSaveRequest alloc] init];
         [saveRequest addContact:mutContact toContainerWithIdentifier:[store defaultContainerIdentifier]];
         [store executeSaveRequest:saveRequest error:nil];
     }
     
 
 }
 
 @end

i can add a contact this way but its just in the background and i want to open the contact view and let the user confirm the shown contact or cancel the action from what I've read i have to work with

     CNContactViewController *controller = [CNContactViewController viewControllerForUnknownContact:mutContact];

but i don't know how to actually do this (probably cause by my lack of knowledge on iOS topics and therefore not being able to phrase a good google search)

so i can't use "self" as the controllers delegate because we are in an extern C area

i can get the Unity view controller with

 `extern UIViewController *UnityGetGLViewController();`

but so far i wasn't able to use it because of different types

Any help appreciated!