update

Notes/AppDelegate.swift

@@ -17,12 +17,12 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         
-        if let content = PreferencesStorage.main.getContent(filename: "main.txt") {
-            let note = Note(context: AppDelegate.viewContext)
-            note.content = content
-            AppDelegate.shared.saveContext()
-            print("default note created")
-        }
+//        if let content = PreferencesStorage.main.getContent(filename: "main.txt") {
+//            let note = Note(context: AppDelegate.viewContext)
+//            note.content = content
+//            AppDelegate.shared.saveContext()
+//            print("default note created")
+//        }
         
         // Override point for customization after application launch.
         return true
@@ -53,6 +53,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         */
         let container = NSPersistentCloudKitContainer(name: "Notes")
         container.loadPersistentStores(completionHandler: { (storeDescription, error) in
+            
             if let error = error as NSError? {
                 // Replace this implementation with code to handle the error appropriately.
                 // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
@@ -68,6 +69,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
                 fatalError("Unresolved error \(error), \(error.userInfo)")
             }
         })
+        
+//        container.viewContext.mergePolicy = NSMergeByPropertyStoreTrumpMergePolicy
+//        container.viewContext.automaticallyMergesChangesFromParent = true
+        
         return container
     }()
 

Notes/NoteViewController.swift

@@ -7,6 +7,7 @@
 
 import Foundation
 import UIKit
+import CoreData
 
 class NoteViewController : UIViewController, UITextViewDelegate {
     
@@ -37,7 +38,9 @@ class NoteViewController : UIViewController, UITextViewDelegate {
         
         /// Store notifications
         
-        NotificationCenter.default.addObserver(self, selector: #selector(self._storeRemoteChange(notification:)), name: .NSPersistentStoreCoordinatorStoresDidChange, object: nil)
+        print("REGISTER")
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(self._storeRemoteChange(notification:)), name: NSPersistentCloudKitContainer.eventChangedNotification, object: nil)
         
         /// Keyboard notifications
         
@@ -63,7 +66,11 @@ class NoteViewController : UIViewController, UITextViewDelegate {
         request.sortDescriptors = [NSSortDescriptor(key: "lastEditDate", ascending: false)]
         
         do {
-            self.note = try AppDelegate.viewContext.fetch(request).first
+            let notes = try AppDelegate.viewContext.fetch(request)
+            
+            print("notes in store : \(notes.count)")
+            
+            self.note = notes.first
             self.textView.text = self.note?.content
         } catch {
             print("Fetch error = \(error)")
@@ -73,8 +80,10 @@ class NoteViewController : UIViewController, UITextViewDelegate {
     
     @objc fileprivate func _storeRemoteChange(notification: Notification) {
         print("_storeRemoteChange...")
+        DispatchQueue.main.async {
             self._loadLastNote()
         }
+    }
     
     func textViewDidChange(_ textView: UITextView) {
         PreferencesStorage.main.requestStorage(filename: "main.txt", content: textView.text)
@@ -155,4 +164,8 @@ class NoteViewController : UIViewController, UITextViewDelegate {
         
     }
 
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+    
 }