Nsfetchedresultscontroller not updating
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To reflect the new order in the table view, the table view cell that corresponds with the old position of the managed object is deleted and a new table view cell is inserted at the new position of the managed object.Run the application in the simulator or on a physical device to see the result. Create a Show segue from the prototype cell in the view controller to the note view controller, setting the segue's identifier to Segue Note View Controller.
I've designed this course to take you down a guided learning path. You build apps and then learn a ton of principles within those apps. If you already know Swift then you can skip the Swift section since the changes between Swift 2 and Swift 3 are minor. We cover those changes periodically throughout the course so don't worry about watching Swift videos again if you already know Swift.Welcome to the world's most comprehensive course on i OS development.This course is designed like an in-person coding bootcamp to give you the most amount of content and help with the least amount of cost.How does the fetched results controller know when a record is added, updated, or deleted?A managed object context broadcasts notifications for three types of events: notifications.However, when I select a list item, nothing really happens.
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.Another set of explanations (for example, articles “Core Data Gotcha” and “NSFetched Results Controller with predicate ignores changes merged from different NSManaged Object Context”) mention that when the.While in the heat of the project, I settled on the first solution, which introduced a new set of issues that were solved but not always to my satisfaction.Let's now take a closer look at the , did Change section Info: NSFetched Results Section Info, at Section Index section Index: Int, for type: NSFetched Results Change Type) optional public func controller Will Change Content(_ controller: NSFetched Results Controller If a new managed object was inserted into the managed object context, we insert a row into the table view at the corresponding index path.The table view and table view data source handle the details of the insertion. If the order of the collection changes, a move event is triggered.Visit Git Hub to clone or download the project we created in the previous tutorial and open it in Xcode.