Using Core Data With SwiftUI

Related tags

SwiftUI App BlogIdeaList-SwiftUI
Overview

Using Core Data With SwiftUI - An Introduction

This sample code project is associated with the following guides at andrewcbancroft.com:

Overview

How does Apple intend for us to use Core Data with SwiftUI?

This project demonstrates how to stitch things together.

It's a single-view app that can

  • Persist a list of BlogIdeas to a Core Data persistent store
  • Use the new @FetchRequest property wrapper to fetch BlogIdeas
  • Use the @Environment's managedObjectContext to create, update, and delete BlogIdeas

Within the code,

❇️ Alerts you to Core Data pieces

ℹ️ Alerts you to general info about what my brain was thinking when I wrote the code

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Comments
  • List doesn't update if the list order doesn't change

    List doesn't update if the list order doesn't change

    Suppose I have 3 ideas like: ideaTitle 1: A ideaTitle 2: B ideaTitle 3: C

    If I update the first idea's name to "Aa", the list will still show: ideaTitle 1: A ideaTitle 2: B ideaTitle 3: C

    Now, if i update idea 2's title to "aa" so it sorts before idea 1, the list will update to: ideaTitle 2: aa ideaTitle 1: Aa ideaTitle 3: C

    opened by SchwiftyUI 7
  • Broken in Beta v5?

    Broken in Beta v5?

    Hi Mate, Thanks for this great example on how to start SwiftUI!

    But: Are you able to run this code in preview currently? Whenever I try it dies with BlogIdeaList-SwiftUI.app crashed: communication with the app was interrupted

    Running in simulator works fine!

    Kind regards, Chris

    opened by ChristopherMeyering 3
  • Bug fix: Make edits to ideas appear in idea list

    Bug fix: Make edits to ideas appear in idea list

    • Identify blogIdea as an "@ObservedObject" on views.
    • Split out list rows into BlogIdeaCellView so that blogIdea can be identified as an "@ObservedObject", and therefore invalidate the view when changed.
    • Hack in override in BlogIdea class to call objectWillChange when willChangeValue is called to notify SwiftUI of changes so that it will invalidate/redraw affected views.
    opened by ggruen 2
  • Update to Xcode beta 6 and iOS beta 7

    Update to Xcode beta 6 and iOS beta 7

    In order to work on a real device the line will need to change to what I did.

    Here's the working code on a real device

    self.presentationMode.wrappedValue.dismiss()
    opened by heyjaywilson 2
Owner
Andrew Bancroft
I’m a relentless learner, passionate about discovery and about sharing new insights that come my way. Pluralsight Author | iOS & Swift | ASP.Net & C# | Data
Andrew Bancroft
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