SwiftUI Property Wrappers Version 2

[@maqusss]

29:25 we can simplify User class. Starting with iOS 14.5 "AppStorage property wrappers now work as expected when contained inside an ObservableObject, causing the system to emit the objectWillChange publisher.". This means we can change User class, and have just one property luckyNumber decorated with @AppStorage instead of @Published.

[@Jager-yoo]

I like how you show the natural trial and error process! This video helps me a lot to understand SwiftUI Basic. Thanks from Korea. 😄

[@candylover2456]

Great tutorial, all your tutorials are really great, thanks so much for helping others !

[@StewartLynch]

Thanks for your kind words

[@ArchAid1]

Loved this! Really nice and clear. Perhaps the best I've seen on property wrappers thus far (and I've seen a ton already). Thanks Stewart!

[@StewartLynch]

Thanks Michael. Appreciate the feedback.

[@jordibruin]

Very clear as we have come to expect from you Stewart, thanks and keep up the great work!

[@xxfkee]

Very straightforward explanation with easy-to-understand samples. Thanks!

[@StewartLynch]

Thanks. That is what I am hoping for.

[@Luxubu2020]

Thanks Stewart, I did not have to use the environment for the model sheet in the content view but the environment object did not crash on me. I am using Xcode 12.2. Wonder that changes since you had this lesson. Thank you for this great property wrappers V2.

[@StewartLynch]

It is possible. I believe I made that video while 12 was still in beta

[@larschristiansen3136]

A great presentation, and complementary to Donny Wals's publications. Thank you Stewart for explaining the concept and its application . Property Wrappers is a great complement to SwiftUI, a necessary one as a matter of fact. Is there any documentation from Apple on which wrappers are "official " language extensions ?

[@AndrewDChristie]

Thanks!

[@StewartLynch]

Thank you

[@muhammadusman-vc5re]

May GOD bless on you for this effort.

[@DavidKoontz]

Awesome walk thru! Thanks!

[@Mahadev-x7u]

Great Gratitude for Amazing Lessons ....👍

[@abdulwahabkhan4316]

Magnificent as always ... thanks a lot @Stewart ... Did u gonna make a video for the remaining Property Wrappers ??

[@StewartLynch]

Which ones are you interested in? There are so many. I just released on on creating your own custom property wrappers.

[@abdulwahabkhan4316]

@GestureState looks more interesting to me or other ones with similar names like @Envirment Vs @EnvirmentObject, @AppStorage Vs @SceneStorage ... but I am gonna leave it to you ... you know batter then me which one's are important and you should cover in your next video ...

[@StewartLynch]

I cover all of these in different videos where they apply. For example gestureState is covered when I cover all of the gestures. Here is a list of all my videos. www.notion.so/Stewart-Lynch-KZbin-Videos-b8114bb08d57437f9e05facc40774184

[@matthew_rodriguez]

Thanks for your super tutorials. It could be cool a tutorial about how to create custom property wrappers

[@StewartLynch]

Thanks. That is on my list to do.

[@savokid328]

Thank you very much! it helps me a lot!

[@arthur_darbinyan]

Very informative & clear. Thank you very much!!!!!!

[@indiekiduk]

24:36 In the App struct, should you wrap var user with @StateObject so it is not lost if the App struct is recreated by SwiftUI?

[@StewartLynch]

@Main is the entry point to the app so I don’t believe that it will get created, It is not a view.

[@indiekiduk]

Maybe an App is created every time a new scene is created? I'll have to test that to see but Apple are using @StateObject for their MailModel in the docs: developer.apple.com/documentation/swiftui/app

[@maqusss]

in examples from apple they use @StateObject in App struct

[@indiekiduk]

@@maqusss yes because @StateObject prevents initialisation of that object during previewing of Views where it isn’t required or a different version is used.

[@ZigBehaviour]

Another Crystal Clear presentation - greatly appreciated - I got an issues with UIKit warnings! relating to the use of .navigationBarTitle() and had to add .navigationViewStyle(StackNavigationViewStyle()) at the end of the NavigationView closure in ContentView.swift Also strangely I didn't find it necessary to add .environmentObject(user) on the creation of my ModalSheetView() have Apple modified the behaviour of sheets? It didn't crash for me and values updated fine!

[@StewartLynch]

You no longer have to add the environmentObject when presenting modal views. That was changed in a recent update.

[@Денис-ж3ф5р]

Would you mind please clarifying iOS targets in the future?

[@ZhengCheng]

Thank you very much!

[@АнасБенМустафа]

thanks sir, awesome

[@denisk3852]

Very useful. Thank you!

[@TK-tg1hx]

Thank you soooo much!

[@ganeshmahajan1985]

Very informative, Thanks for this 😊

[@ostanjaffcompany173]

Thanks a lot!

[@FailMachineInc]

thank you Stewart

[@Prashant-7]

Very helpful thank you

[@narasimhapoluparthi6285]

Awesome 👏

[@AndrewDChristie]

Thanks!

[@StewartLynch]

Thank you