SwiftUI Tutorial: What's the difference between @State, @ObjectBinding, and @EnvironmentObject?
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- čas přidán 19. 05. 2024
- If you want to understand how SwiftUI works with state, start here - this video walks you through how state works, why it matters, and how each of SwiftUI's state options work, all using hands-on code examples so you can see for yourself.
For more information on SwiftUI, see my free online book SwiftUI By Example: www.hackingwithswift.com/quic... - Věda a technologie
Watch next: How to fix slow List updates in SwiftUI - czcams.com/video/h0SgafWwoh8/video.html
Questions? Comments? Tweet me @twostraws.
IMPORTANT: ObjectBinding/BindableObject are deprecated now! @ObjectBinding is become @ObservedObject and BindableObject protocol is become ObservableObject as well as willChange become objectWillChange.
Simon Bachmann Thank you so much! This indeed saved a lot of trouble...
Was going to ask the same, I started swiftui recently and was confused with seeing ObjectBinding in this video! thanks
I was going to ask when to use ObservableObject and BindableObject, thanks! 😊
Ah that makes sense. Only started learning SwiftUI of late and was confused seeing those. Thanks for clearing up.
thank you 👌
If you are learning SwiftUI, you literally NEEEEED to watch this video! This scratched so many cognitive "itches" I had about Swift, it's almost scary. Thank you, thank you, thank you!
Been messing around with all three for a few days now, getting things to 'work'! This video really hit the nail on the head and now I truly understand the why. Thanks Paul, you're a legend :)
Please make more! I love the way you talk with passion and interest! Also the way you edit the videos with a final touch! Awesome job!!!
Every time I watch your videos it gives me a deeper understanding of the topic explained. Thank you so much!
This is the best video about this things I have ever watched. You make simple and more complicated examples and you describe them extremely well. Congrats and thanks!
Saying that this video is "HELPFUL" would be an understatement. However, I have no bigger words. LOL! In short, THANK YOU DUDE! The way you make things clear, is just something else.👌👌👌👌👌
These videos are soooooo good. Your teaching style is amazing and easy to follow, but not slow enough that I'm skipping around for the info. Clear, concise and concentrated. Superb! Also, you explain the WHY. It's so important, but what so many people miss.
Absolutely great stuff. You're making my Swift-learning experience a lot clearer.
I'm intrigued about "who taught you?" though.
Because I get the feeling you had a good teacher.
(This is where you say you're self-taught too)
This is an absolutely fantastic explanation for someone like me who doesn't know enough yet to distinguish the significant bits of what the docs are saying. Thank you so much! :D
I'm used .Net's, old Xaml's and to Qt Qml's (super elegant) property bindings. I was exactly looking for an intro on how SwiftUI does this. You found the perfect level between giving an overview and going into detail. Thanks!
Wow! Best SwiftUI video in the whole CZcams! Thank you!
This is THE best tutorial I've seen so far! And boy I've seen many.
Thanks Paul!
I've watched a few different videos on @State, @ObjectBinding and @EnvironmentObject and it didn't make that much sense. Your explanation was amazing, clear and high descriptive. Great job :)
I have saved 1 hour while watching you 20 minutes concrete and robust explanatory video. Thank you Paul.
Oh my goodness. This @EnvironmentObject thing might just save my life. Thank you thank you!
Excellent tutorial, I finally understand these concepts after trying a few other sources. Thanks Paul!
Paul you are smashing it again!!! Great breakdown of new tools!!!
Great great tutorial... first division university class... core concepts really well explained and introduced vía telling an incremental story... a must watch... Apple should absolutely use this video and upload it to SwiftUI developer library
💪🏻😀😎
Best no bs intro (experienced programmer here)
Stumbled upon your tutorials and explanations and it’s amazing. I am currently doing QA work and do some dev work too as I’m learning. However, this is preparing me for the future and I really appreciate your videos and explanations. I still want to transition from QA to dev because it’s more interesting but I know I have a while to go.
Been stuck on these concepts for days, this video really help improve my understanding!
You explain very easily even without the help of your two
dogs :) You are the best ! Hope you continue to make many more videos!
Best tutorial for the states. Loved it
Excellent! All gaps flled. Thank you. 👍🏻
Much of this video is not appropriate anymore, but the description of what state, binding, etc are is TOTALLY worth watching. I have watched so many videos, but this is the first time I have understood these concepts. Well done Paul!!
I’m just getting started. What would you recommend is the perfect video right now for this information? Thank you very much.
Great explanation, been trying to grasp this concept for a loooooong time, its finally coming together. Thank you
Hi Paul, thank you for the tutorials you are making. Helps me alot.
Great explanation, love your professional tutorial
I think this is the best tutorial video you’ve ever made.
Your content is gold. Thanks Paul!
Hi Paul. Thank you for this awesome video. Excellent tutorial. Your explanation is accurate, concise, and clear. Congrats!
This is well described and very helpful video indeed. Keep the good work up,,, you are doing a commendable job for the community.
You're a great teacher, easy to understand.
Great videos, thank you so much. I'd like to suggest you a subject for the next videos, it would be great to see how to work with CoreData and SwiftUI!
Thank you very much! This was the first time I really understood what was going on...
Thanks for the great explanation, Paul! Now most of the magic behind SwiftUI is much clearer for me :-)
Thanks Paul - great visuals for the video along with your clear instruction.
+1 for the request for a basic Swifty I app that uses core data.
Great vid!! Love the explanations!
I love SwiftUI n I love this Tutorial too. This is awesome.
Thank you for this tutorial!
You make really great videos, and thank you for that. Regarding this one: My projects have no SceneDelegate, so an update would be highly appreciated. Where and how do you set up the global varible in the .app file?
Your clarity is awesome. Can you do one that uses Core Data?
maybe he already did one go check : )
Core Data with SwiftUI
@@rickstrickland2464 oh now i get it : )
I wasn't able to make it work too, got to figure a good way to make managed objects conform to bindableObject
I’ve been an iOS dev for 1 week :) i think you can pull initial startup data out of core data in the scene delegate. Then pass that data into EnvironmentObjects so it can be accessible to all child view from main. Then each sub view can perform CRUD operations on it with core data. This method may not be great if you’re pulling a lot of data into memory. Perhaps there is a better way? Would love to hear!
Now this now a year later, it's so clear. Thanks
Much needed explanation!! Thanks Paul
BEST EXPLANATIONS !! BIG UP!!!
Paul, we generally keep state as a completely different place to the UI components themselves, this provides a layer between state/transport and UI.
EXCELLENT Explanation !!!
~AMAZING~ This is SOOO helpful!!!
This is priceless. Thank you
Being an iOS & React developer feels great with SwiftUI. :)
Amazing video, teaches us core concept in a very good way. BUT The Victor Hugo reference nailed it!!!
Love all your tutorials. Would be great to have in depth tutorials on Combine framework as well.
Great video @twostraws very well explained and delivered! Time to write some SwiftUI...
This is the best explanation so far! However, I do hope you can add in explanation of @Binding besides these 3.
Thank you so much for this video. You have amazing good teaching skills!
Awsome Teacher.. thank you for your great lecture
Thatks for this cool video ! Great explanation.
"please just stop and thnik for one moment how amazing that is" is the one possible definition when it comes to swiftui.
What a clear explanation! Thanks! Also understandable for a beginner like me :-)
Just learning Swift.. this was really helpful. And I caught your bread and 24601 reference… Cheers for that one!!! 🥃
Loved it! Clear tutorial.
Thank you so much, your explanation of these concepts is very clear
I've learned a lot from this. Thank you!
thanks so much for this explanation, it works well to understands the way these annotations works, also if now the Object binding pattern is changed since the video was @published :)
Thank you! Great work
Excellent tutorial! Thanks!
Great explanation!
Your videos are awesome man.
You are cool! Total covering, thanks a lot
Excellent explanation!
Great explanation! Thank you
Awesome video Paul
U r superb explaining ❤
This is Great! Thank you Paul
Awesome video, super concise!
Thank you so much for this!!
Very cool! Much simpler than managing state in android.
fantastic tutorial. great
Nest video for a guy who comes from java and python. Thanks!
Very good explanation, learnt a lot 👍
Another great video - thank you.
tchai! that was clear and refreshing.
5:46 beautiful example on how @State keyword works
You are really brilliant smart.... What a wonderful explain!? Thank you sooooo much!
Great explanation. Thanks.
Awesome tutorial
Awesome explanations! Nothing else to say :-D
Thanks for your tutorial
Finally my company decided to start the next project using SwiftUI on iOS 13 and here I am, BOOOM :)
These clarity is awesome. Could you please re-visit this again, once GM release happened for iOS 13. As the Combine framework is also in beta, and could have changes before GM release happens in September/October month.
Great video! Thank you!
Love❤️ this Video.
Excellent. Thank you so much ☺️☺️👍
Hi Paul, love your videos. I have a question regarding spriteKit, now that swiftUI is here, what happens to spritekit logic? Has that changed too, how do we use it now with all this new code logic?
This is a superb video.
Great explanation
3:59 is my favourite part of the the video 🤯
Great video! Thank you