如何使用swift从iPhone联系人中检索电子邮件？

Question

我是新来的swift。我使用APAdressBook Framework来检索iPhone中的联系人。每件事情都可以正常工作到IOS 8.4，但是在模拟器和iPhone设备的IOS 9中检查时，它不会访问联系人，甚至不会显示警报消息，如您想访问任何联系人如果是的话，可以面对这种类型的问题请给我你的宝贵答案？

Answer 1

Apple Inc.从iOS 9引入Contacts.framework。因此，最好使用此框架来检索联系人。

以下是从联系人应用获取电子邮件或整个联系人的方法。

将Contacts.framework添加到您的项目中。

创建或添加类型头文件的新文件并给出如yourProjectName-Bridging-Header.h这样的名称将#import <Contacts/Contacts.h>语句写入文件并保存并设置来自构建设置的此文件的适当路径。

现在创建方法

func getAllContacts() { 

    let status = CNContactStore.authorizationStatusForEntityType(CNEntityType.Contacts) as CNAuthorizationStatus 

    if status == CNAuthorizationStatus.Denied { 

     let alert = UIAlertController(title:nil, message:"This app previously was refused permissions to contacts; Please go to settings and grant permission to this app so it can use contacts", preferredStyle:UIAlertControllerStyle.Alert) 
     alert.addAction(UIAlertAction(title:"OK", style:UIAlertActionStyle.Default, handler:nil)) 
     self.presentViewController(alert, animated:true, completion:nil) 
     return 
    } 

    let store = CNContactStore() 
    store.requestAccessForEntityType(CNEntityType.Contacts) { (granted:Bool, error:NSError?) -> Void in 

     if !granted { 

      dispatch_async(dispatch_get_main_queue(), {() -> Void in 

       // user didn't grant access; 
       // so, again, tell user here why app needs permissions in order to do it's job; 
       // this is dispatched to the main queue because this request could be running on background thread 
      }) 
      return 
     } 

     let arrContacts = NSMutableArray() // Declare this array globally, so you can access it in whole class. 

     let request = CNContactFetchRequest(keysToFetch:[CNContactIdentifierKey, CNContactEmailAddressesKey, CNContactBirthdayKey, CNContactImageDataKey, CNContactPhoneNumbersKey, CNContactFormatter.descriptorForRequiredKeysForStyle(CNContactFormatterStyle.FullName)]) 

     do { 

      try store.enumerateContactsWithFetchRequest(request, usingBlock: { (contact:CNContact, stop:UnsafeMutablePointer<ObjCBool>) -> Void in 

       let arrEmail = contact.emailAddresses as NSArray 

       if arrEmail.count > 0 { 

        let dict = NSMutableDictionary() 
        dict.setValue((contact.givenName+" "+contact.familyName), forKey: "name") 
        let emails = NSMutableArray() 

        for index in 0...arrEmail.count { 

         let email:CNLabeledValue = arrEmail.objectAtIndex(index) as! CNLabeledValue 
         emails .addObject(email.value as! String) 
        } 
        dict.setValue(emails, forKey: "email") 
        arrContacts.addObject(dict) // Either retrieve only those contact who have email and store only name and email 
       } 
       arrContacts.addObject(contact) // either store all contact with all detail and simplifies later on 
      }) 
     } catch { 

      return; 
     } 
    } 
} 

调用此方法，你想self.getAllContacts()

而当你想要检索

for var index = 0; index < self.arrContacts.count; ++index { 

      let dict = self.arrContacts[index] as! NSDictionary 
      print(dict.valueForKey("name")) 
      print(dict.valueForKey("email")) 
     }