How to use @AppStorage in SwiftUI | Bootcamp #52
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- In iOS applications, we can use App Storage / User Defaults to save small pieces of information that will persist between sessions. This means that if a user closes the app and re-opens it, these values will still be saved! The @AppStorage property wrappers lets us easily add and save data into UserDefaults. In this video we will first understand how UserDefaults work and then look at the subtle advantages that the App Storage property wrapper gives us.
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Literally the only SwiftUI videos I can sit through end to end. Clear, concise, but not presumptuous. Great stuff.
Don't stop doing this, you're the best. I hope you earn yourself tons of cash with those videos.
Thank you for creating such a comprehensive (and free) set of courses. I've tried several courses throughout the past years (some of them paid) and yours are by far the easiest to follow. I now use your playlists as a reference as I build my apps. Thank you, Nick!
Fantastic! Over the past year I worked though several paid courses and was never introduced to this and many other useful techniques introduced in this series! This series is so good I am now using it along with Nick's Swift Basics to help teach my daughter the fundamentals of coding.
It is incredibly rewarding to see comments like this! I really hope your daughter is able to follow along and grasp these concepts too. You'll have to let me know how she does! Thanks for the comment Joel 👍
Great. I think it is nice that you show that AppStorage is much leaner and cleaner than the older UserDefaults way. Thanks again!
Yes, I love the examples and real-world application you demonstrate in these videos. Great stuff indeed! :)
@16:00 Thanks for pointing out that the "@AppStorage.." line needs to be in every view that wants to use the stored value.
Thank you for making this clear and easy to understand.
You're welcome Danny. Thanks for watching!
Your content is blessing to community❤
Thanks for watching 😁
Great Video and clear explanation ... loved it .. ❤ .. keep it up.
This is the best opening, I've ever heard 🤘I never skip it.
Start watching from 13:22)
SwiftUI is much more powerful, thanks for the video
真的是太棒了！！This is awesome course！！！！ever！！thanks Nick！！！thanks
🎉😊
My man.
I did your dog gram course and use my and wished you had an updated course with FirebaseAuth and using Firestore database 😢 This is gold though🎉
I have a Firebase playlist coming in a few weeks 🤙
On Udemy** Great! Excited🔥
@@SwiftfulThinking Waiting
@@SwiftfulThinking waiting patiently 😩😇
Great video. I'm struggling to figure out how to use app storage for an array of strings ..... any thoughts? Thanks!
You need a quick extension for that: stackoverflow.com/questions/63166706/how-to-store-nested-arrays-in-appstorage-for-swiftui
Thank you🙌
Great tutorial! I want to wrap my object data into JSON files and stores them in local storage, do you have a tutorial for that?
Good day, Nick! Thanks a lot for such a beautiful video. Do you have, by any chance, a video about offline storage but for big data? Right now I'm building the App for the gym, and I want to store inside my app GIFs that will show the user their exercises, and I want to let my users access them in offline mode. , thank you in advance!
Yes, for images/videos I would save them in the FileManager and for other data I would save them in Core Data. Both are covered in the Continued Learning playlist, or you can search for them here: www.swiftful-thinking.com/search
@@SwiftfulThinking Thanks a lot , and good luck ! You are the best !
Awasome Bro...😎
Brooooo you’re moving fast bro
Perfect!
Cool
How do you force quit of the app in the simulator? Shift-Cmd-H followed by 2nd H just minimizes the app, but when you double click to restart the app the data is still there ("Nick") before any of the code has been added yet to persist it (e.g. 8:35)?
OK - I figured it out. After dragging it up. Long click and hold the corner of the app. Then you can swish it up to quit.
I watched your instagram video on the Udemy website. Its a great and wonderful video. May you please published the second video to complete instagram format such as follower and other features? Thank you for your teaching and your videos.
Thanks Sara! I will be creating a new Firebase series + course on this channel in the coming weeks and will be sure to include that. Thanks for watching :)
@@SwiftfulThinking Just bought the Udemy course! You should totally mention this in your videos. I didn't know you had one.
12:00 reference
16:15
Can I use AppStorage from inside my ViewModel? If not, what is the best way to achieve the same result?
This seems to be similar to using a pointer
Is it possible to get the same @AppStorage from a different script?
Cool!!!!!!!!!!!!!!!
How can I save a COMPUTED variable to app storage?
13:08 : tutorial begins
incorrect, it begins at 00:00 because this is a beginner course and I'm pretty sure most of us didn't know about UserDefaults in UIKit and it's a pretty important thing to know where @AppStorage originated from.
@@zenBoy323 A beginner course in SwiftUI is not the same thing as a beginner course in Swift.
Many come from Swift.
Just quick question @AppStorage working out side of View for example ... Does this work in @main Class ?
I believe the correct usage of @AppStorage is only used inside a View. You can just access UserDefaults directly if you need to do it in the @main struct.
It should be noted that you should not store authorization and confidential information in this storage, because it is possible to get access to them.
👍👍
Hi, Excuse me.
Does anyone know why when I try to use @AppStorage, there is always an error message saying 'Struct 'AppStorage' cannot be used as an attribute'.
I had the same thing and realised that I named my struct AppStorage(). If you change your struct name to something else and the corresponding preview name, you'll be good to go.
3:45
9:00
I think if ppl interested in using and learning @AppStorage, they probably already know what is exclamation mark and they already know how to safely unwrap optional😏 Anyway thanks for the video
Hey Nurlan! You're probably right haha. Thanks for watching!
Am I the only one who gets sleepy when watching coding courses?
It's not about the instructor, this one is great, but in general, I get sleepy when watching a programming course even if I'm coding along with the course😴
I get pumped and excited because I'm pretty passionate about learning this stuff! Maybe this just isn't your thing or if it is either watch courses earlier in the day or drink some strong coffee lol
@@zenBoy323 I wonder if it's really my thing cuz I've been programming for almost 4 years now yet I still get sleepy when watching a course