IOS App 正在关闭允许访问地址簿

Question

我的应用程序包含访问地址簿的请求。当我按下警报中的“允许”按钮时，应用程序正在关闭。哪里可能出错？有代码：

func getContactFromCNContact() -> [CNContact] {
        let contactStore = CNContactStore()
        let keysToFetch = [
            CNContactFormatter.descriptorForRequiredKeys(for: .fullName),
            CNContactGivenNameKey,
            CNContactMiddleNameKey,
            CNContactFamilyNameKey,
            CNContactEmailAddressesKey,
            CNContactPhoneNumbersKey,
            CNContactImageDataKey,
        ] as [Any]
        
        var allContainers: [CNContainer] = []
        do {
            allContainers = try contactStore.containers(matching: nil) 
        
        var results: [CNContact] = []
        
        for container in allContainers {
            
            let fetchPredicate = CNContact.predicateForContactsInContainer(withIdentifier: container.identifier)
            do {
                let containerResults = try contactStore.unifiedContacts(matching: fetchPredicate, keysToFetch: keysToFetch as! [CNKeyDescriptor])
                results.append(contentsOf: containerResults)
            } catch {
                print("Error fetching results for container")
            }
        }
        return results
    }

Answer 1

确保您的Info.plist 中有密钥NSContactsUsageDescription 的使用说明且不为空。