CNPropertyNotFetchedException应用程序崩溃

Question

我想要得到他们的名字以及swift 3.0和xcode 8.0中的电话号码的手机的所有联系人列表。下面 是代码

func get_all_user_contacts() 
{ 
    let status = CNContactStore.authorizationStatus(for: .contacts) 
    if status == .denied || status == .restricted 
    { 
     presentSettingsActionSheet() 
     return 
    } 

    // open it 

    let store = CNContactStore() 
    store.requestAccess(for: .contacts) { granted, error in 
     guard granted else 
     { 
      DispatchQueue.main.async { 
       self.presentSettingsActionSheet() 
      } 
      return 
     } 

     // get the contacts 

     var contacts = [CNContact]() 

     let request = CNContactFetchRequest(keysToFetch: [CNContactIdentifierKey as NSString, CNContactFormatter.descriptorForRequiredKeys(for: .fullName)]) 
     do 
     { 
      try store.enumerateContacts(with: request) 
      { contact, stop in 


       contacts.append(contact) 
      } 
     } 
     catch 
     { 
      print(error) 
     } 

     // do something with the contacts array (e.g. print the names) 

     let formatter = CNContactFormatter() 
     formatter.style = .fullName 
     for contact in contacts 
     { 
      let MobNumVar = ((contact.phoneNumbers.first?.value)! as CNPhoneNumber).stringValue 
      print(MobNumVar) 
      print(formatter.string(from: contact) ?? "???") 
     } 
    } 
} 

当我运行这个程序，它崩溃，我不知道我在哪里得到错误的。 任何人都可以帮助我..它将不胜感激。

Answer 1

你请求键

• CNContactIdentifierKey 
• CNContactFormatter.descriptorForRequiredKeys(for: .fullName) 

...但此时你试图访问contact.phoneNumber。

可以在keysToFetch只指定快捷键，所以你需要添加CNContactPhoneNumbersKey到阵列