迅速;来自UNUserNotificationCenter的HTTP请求无法正常工作：Internet连接似乎已离线

时间：2018-07-17 08:58:34

标签： ios swift xcode unusernotificationcenter

我正在使用Xcode Version 9.4.1 (9F2000)。

我在AppDelegate.swift中有此代码：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    UNUserNotificationCenter.current().delegate = self
    showPushButtons()
    return true
}
func httpRequest(file: String, postKey1: String, postValue1: String, postKey2: String, postValue2: String) {
    let url = URL(string: "https://www.example.com/\(file)")!
    var request = URLRequest(url: url)
    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
    request.httpMethod = "POST"
    let postString = "\(postKey1)=\(postValue1)&\(postKey2)=\(postValue2)"
    request.httpBody = postString.data(using: .utf8)
    let task = URLSession.shared.dataTask(with: request) { data, response, error in
        guard let data = data, error == nil else {
            print("error=\(String(describing: error))")
            return
        }
        if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
            print("statusCode should be 200, but is \(httpStatus.statusCode)")
            print("response = \(String(describing: response))")
        }

        let responseString = String(data: data, encoding: .utf8)
        print("responseString = \(String(describing: responseString))")
    }
    task.resume()
}
func showPushButtons(){
    let replyAction = UNTextInputNotificationAction(
        identifier: "reply.action",
        title: "Reply to message",
        textInputButtonTitle: "Send",
        textInputPlaceholder: "Write some text here")

    let pushNotificationButtons = UNNotificationCategory(
        identifier: "allreply.action",
        actions: [replyAction],
        intentIdentifiers: [],
        options: [])

    UNUserNotificationCenter.current().setNotificationCategories([pushNotificationButtons])
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    if  response.actionIdentifier  ==  "reply.action" {
        if let textResponse =  response as? UNTextInputNotificationResponse {
            let sendText =  textResponse.userText
            print("Received text message: \(sendText)")
            httpRequest(file: "message.php", postKey1: "message", postValue1: "Hello!", postKey2: "chat_user", postValue2: "Peter")
        }
    }
    completionHandler()
}

功能：

当接收到推送通知并进行强制触摸时，将显示文本字段和键盘（如WhatsApp等消息传递应用程序所知）。您可以编写一些文本，然后提交/发送。

您可以通过以下行获取并打印已提交的消息：

print("Received text message: \(sendText)")

这可以正常工作。

但是当尝试像这样将数据发送到我的服务器时：

httpRequest(file: "message.php", postKey1: "message", postValue1: "Hello!", postKey2: "chat_user", postValue2: "David")

它不起作用。无法访问我的服务器，并且在控制台日志中出现如下错误：

  

收到的短信：首先尝试

     

2018-07-19 08：45：00.643935 + 0200 MyApp [4307：1502538] + [CATransaction   同步]在交易中调用

     

2018-07-19 08：45：00.644639 + 0200 MyApp [4307：1502538] + [CATransaction   同步]在交易中调用

     

2018-07-19 08：45：13.091958 + 0200 MyApp [4307：1502647] TIC TCP连接   失败[1：0x1c4169a80]：1:50 Err（50）

     

2018-07-19 08：45：13.093089 + 0200 MyApp [4307：1502647]任务   <1E8151BB-7098-46CD-9F68-8AA0E320CB7D>。<1> HTTP加载失败（错误   代码：-1009 [1:50]）

     

收到的短信：第二次尝试

     

2018-07-19 08：45：13.094756 + 0200 MyApp [4307：1503029]任务   <1E8151BB-7098-46CD-9F68-8AA0E320CB7D>。<1>完成并出现错误-代码：   -1009

     

2018-07-19 08：45：13.096208 + 0200 MyApp [4307：1502538] + [CATransaction   同步]在交易中调用

     

2018-07-19 08：45：13.096580 + 0200 MyApp [4307：1502538] + [CATransaction   同步]在事务内调用error = Optional（Error   Domain = NSURLErrorDomain代码= -1009“ Internet连接似乎   处于离线状态。” UserInfo = {NSUnderlyingError = 0x1cc047320 {Error   Domain = kCFErrorDomainCFNetwork代码= -1009“（空）”   UserInfo = {_ kCFStreamErrorCodeKey = 50，_kCFStreamErrorDomainKey = 1}}，   NSErrorFailingURLStringKey = https://www.example.com/message.php，   NSErrorFailingURLKey = https://www.example.com/message.php，   _kCFStreamErrorDomainKey = 1，_kCFStreamErrorCodeKey = 50，NSLocalizedDescription = Internet连接似乎是   离线。}）

我的功能httpRequest()似乎可以正常工作，因为我可以像这样从didFinishLaunchingWithOptions调用它：

httpRequest(file: "message.php", postKey1: "message", postValue1: "Hello!", postKey2: "chat_user", postValue2: "David")

没有任何问题。这也意味着我的域和服务器运行正常。

但是为什么不能从我的httpRequest()函数调用我的UNUserNotificationCenter函数呢？

当收到推送通知时，我的应用程序当然处于后台或关闭状态。我是否需要一些特殊的代码才能使其在后台模式下工作？

1 个答案:

答案 0 :(得分：0)

这是AppDelegate.swift中我的工作代码：

//  AppDelegate.swift

import UIKit
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    var window: UIWindow?
    var backgroundTask: UIBackgroundTaskIdentifier = UIBackgroundTaskInvalid

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        UNUserNotificationCenter.current().delegate = self
        pushAction()
        return true
    }
    func registerForPushNotifications() {
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {
            (granted, error) in
            print("\nPermission granted: \(granted)\n")
            self.pushAction()
            guard granted else { return }
            self.getNotificationSettings()
        }
    }
    func getNotificationSettings() {
        UNUserNotificationCenter.current().getNotificationSettings { (settings) in
            print("\nNotification settings: \(settings)\n")
            guard settings.authorizationStatus == .authorized else { return }
            DispatchQueue.main.async(execute: {
                UIApplication.shared.registerForRemoteNotifications()
            })
        }
    }
    func httpRequest(file: String, postKey1: String, postValue1: String, postKey2: String, postValue2: String) {
        let url = URL(string: "https://www.example.com/\(file)")!
        var request = URLRequest(url: url)
        request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
        request.httpMethod = "POST"
        let postString = "\(postKey1)=\(postValue1)&\(postKey2)=\(postValue2)"
        request.httpBody = postString.data(using: .utf8)
        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            guard let data = data, error == nil else {
                print("\nerror=\(String(describing: error))\n")
                return
            }
            if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
                print("\nstatusCode should be 200, but is \(httpStatus.statusCode)\n")
                print("\nresponse = \(String(describing: response))\n")
            }
            let responseString = String(data: data, encoding: .utf8)
            print("\nresponseString = \(String(describing: responseString))\n")
        }
        task.resume()
    }
    func application(_ application: UIApplication,
                     didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let tokenParts = deviceToken.map { data -> String in
            return String(format: "%02.2hhx", data)
        }
        let token = tokenParts.joined()
        print("\nDevice Token: \(token)\n")
    }
    func application(_ application: UIApplication,
                     didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("\nFailed to register: \(error)\n")
    }
    func pushAction(){
        let replyAction = UNTextInputNotificationAction(
            identifier: "reply.action",
            title: "Reply to message",
            options:[],
            textInputButtonTitle: "Send",
            textInputPlaceholder: "Input/write text here")

        let pushNotificationButtons = UNNotificationCategory(
            identifier: "allreply.action",
            actions: [replyAction],
            intentIdentifiers: [],
            options: [])

        UNUserNotificationCenter.current().setNotificationCategories([pushNotificationButtons])
    }
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
//        If you don’t want to show notification when app is open, do something else here and make a return here.
//        Even if you don’t implement this delegate method, you will not see the notification on the specified controller. So, you have to implement this delegate and make sure the below line execute. i.e. completionHandler.
        completionHandler([.sound,.alert,.badge])
    }
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

        if response.actionIdentifier  ==  "reply.action" {
            if let textResponse =  response as? UNTextInputNotificationResponse {
                if UIApplication.shared.applicationState != .active{
                    self.registerBackgroundTask()
                }
                let sendText =  textResponse.userText
                print("\nReceived text message: \(sendText)\n")
                DispatchQueue.global(qos: .background).async {
                    self.httpRequest(file: "message.php", postKey1: "message", postValue1: sendText, postKey2: "user", postValue2: "Peter")
                }
            }
        }
        completionHandler()
    }
    func  registerBackgroundTask() {
        backgroundTask = UIApplication.shared.beginBackgroundTask { [weak self] in
            self?.endBackgroundTask()
        }
        assert(backgroundTask != UIBackgroundTaskInvalid)
    }
    func endBackgroundTask() {
        print("\nBackground task ended.\n")
        UIApplication.shared.endBackgroundTask(backgroundTask)
        backgroundTask = UIBackgroundTaskInvalid
    }
}

别忘了：

–创建推送证书

–您将在控制台日志中看到设备令牌

–像这样在您的aps负载中添加"category":"allreply.action"：

{
    "aps":{
        "alert":{
            "title":"Hello",
            "body":"This is a test!"
            },
            "badge":0,
            "sound":"default",
            "category":"allreply.action"
    }
}

在Push Notifications中启用Background Modes和Capabilities：

enter image description here enter image description here

非常感谢to Raza K. from Freelancer.com！

相关问题
最新问题