我點擊推送通知後無法打開detailedViewController

Question

我想顯示一個主視圖seque的detailViewController。 appdelegate.swift的

相關的部分：

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], 
       fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { 
    print("Notification: basic delegate (background fetch)") 
    // If you are receiving a notification message while your app is in the background, 
    // this callback will not be fired till the user taps on the notification launching the application. 
    // Print message ID. 
    if let messageID = userInfo[gcmMessageIDKey] { 
     print("2 Message ID: \(messageID)") 
     print("2 message : \(userInfo)") 
     openPostDetail(userInfo: userInfo) 
    } 
    completionHandler(UIBackgroundFetchResult.newData) 
} 

func openPostDetail(userInfo: [AnyHashable: Any]) { 


    let post_id = userInfo["post_id"] as? String 

    print("post_id: \(post_id) ") 

    let baseURL = URL(string: websiteUrl) 
    //89169?_embed 
    let postId = "89169" 
    let url = URL(string: "wp-json/wp/v2/posts/\(postId)?_embed", relativeTo: baseURL) 
    var newPost :Posts? 
    URLSession.shared.dataTask(with:url!, completionHandler: {(data, response, error) in 
     guard let data = data, error == nil else { return } 
     do { 
      let json: NSDictionary = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as! NSDictionary 
      newPost = Posts(post: json) 
      print("author: \(String(describing: newPost?.postAuthor))") 


      let sb = UIStoryboard(name: "Main", bundle: nil) 
      let rootVC = sb.instantiateViewController(withIdentifier: "mainView") as! NewsViewController 
      let otherVC = sb.instantiateViewController(withIdentifier: "postDetailIdn") as! PostDetailTableViewController 
      otherVC.post = newPost! 

      rootVC.navigationController?.pushViewController(otherVC, animated: true) 



     } catch let error as NSError { 
      print(error) 
     } 
    }).resume() 


} 

` 當我在推送通知挖掘我得到這個錯誤： 試圖從比主線程或網絡中的其他線程獲取網絡鎖定線。這可能是從輔助線程調用UIKit的結果。現在崩潰...

感謝您提前

Answer 1

您需要更新主線程上的用戶界面。

DispatchQueue.main.async { 
     let sb = UIStoryboard(name: "Main", bundle: nil) 
        var navigationController = UIApplication.sharedApplication().keyWindow?.rootViewController as! UINavigationController 
        let otherVC = sb.instantiateViewController(withIdentifier: "postDetailIdn") as! PostDetailTableViewController 
        otherVC.post = newPost! 

        navigationController?.pushViewController(otherVC, animated: true) 
}