Peter Friese
@peterfriese
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7,387
Following
1,904
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1,551
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15,167
Developer Advocate @Google on the @Firebase team · Gemini SDK · Book: · Newsletter:
Hamburg, Germany
Joined January 2009
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Last Seen Profiles
Pinned Tweet
Learn how to implement the App Store Hero Animation with SwiftUI's new NavigationTransition
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@twostraws
Make Xcode's Assistant aware of your ViewModels, Views, etc:
defaults write .dt.Xcode IDEAdditionalCounterpartSuffixes -array-add "ViewModel" "View" "Screen"
Quite handy when working with SwiftUI:
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Looking for the definitive resource to learn how to use Firebase in iOS apps?
I spent 100+ hours to build this FREE interactive tutorial that walks you through replicating Apple's reminders app using SwiftUI and Firebase:
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Waiting for WWDC and not sure how to spend your time?
How about learning how to use SwiftUI and
@Firebase
with this interactive tutorial!
Running just shy over 5 hours, this should give you a head start for next week.
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How would you like an interactive tutorial for SwiftUI and Firebase...?
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It might seem like a small thing, but this is actually a pretty big deal. Thanks for listening to our feedback, and bringing bindable list items to SwiftUI,
@luka_bernardi
,
@natpanferova
, and team!
#WWDC21
#SwiftUI
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If you've got 2.5 hours, this tutorial will change your understanding of SwiftUI views:
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Look what was in the post today!
More details (and how to get your personal copy) at
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👋🏻 Hey Apple developers!
Here are some quick tips for setting up Firebase with iOS.
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👋🏻 Hey Apple developers!
Here are some quick tips for setting up Firebase with iOS.
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Me when your app asks me to create an account before I can even try it first:
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With all the information Apple shared about async/await and structured concurrency at
#wwdc21
, it easy to get lost. So here is a quick guide to get you started. /1
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If you'd like to learn how to build SwiftUI components, check out this hands-on interactive tutorial I built for you!
You will learn:
- Different techniques for composing views
- How to make your views customisable
- Making your views interactive
- And how to style your views
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If you like Xcode, you will love CodeEdit. It's a native code editor for macOS, heavily inspired by Xcode. Great work,
@austincondiff
and team!
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Don't map your Firestore documents manually, folks. Tell your friends, too.
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For a chance to win a signed copy of my book “Asynchronously Programming with SwiftUI and Combine”, come to my workshop “Building Reusable SwiftUI Components” at
@IOSDEVUK
(starting at 1pm).
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👋🏻 Hey Apple developers!
Here are some quick tips for setting up Firebase with iOS.
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You can now use the
@RemoteConfigProperty
wrapper to connect your SwiftUI views to Firebase Remote Config.
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Just finished uploading the slides for my talk "Building Reusable SwiftUI Components" that I gave at
@SwiftConf
.
Thanks everyone who attended, and all the inspiring conversations we had about views, components, and architecture for SwiftUI apps!
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Also, for a chance to win a signed copy of my book “Asynchronous Programming with SwiftUI and Combine”, come to my talk “Building Reusable SwiftUI components” at
@swiftheroes_it
this Friday, 15:15.
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When building UIs in SwiftUI, you can easily end up with a large chunk of code that is hard to understand.
Here are three simple things you can do to fix this:
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Oh, look - the designer of the Magic Mouse has a new job:
Apple's self-driving car could feature VR technology and no windows:
3K
2K
11K
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Learn how to build re-usable SwiftUI components in my talk at
@AppriseConf
on March 23rd in Oslo!
For a chance to win a hand-signed copy of my book "Asynchronous Programming with SwiftUI and Combine", like and RT this tweet, and attend my talk.
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👋🏻 Hey Apple developers!
Here are some quick tips for setting up Firebase with iOS.
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Follow along as I replicate Apple's Reminder app using SwiftUI 3 and Firebase! /1
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Unpopular opinion: light mode screenshots are easier to read on most projectors.
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I’ve created a landing page for the DocC tutorials I created. Here are two of them - more will follow:
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Calling all Firebase developers - we want to hear from you! Did you build something amazing using
@Firebase
? Found a creative use for one of our APIs? Come write for us and the community at .
Details:
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I remember my first day at the
@google
office in London (Belgrave House on Buckingham Palace Road) like it's yesterday.
A lot of things have changed in the past 10 years, but I am still as excited about my job as I was back then. Maybe even more! Over the years,...
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Join me on a journey to replicate the iOS Reminders app using SwiftUI and 🔥
@Firebase
! In the first part of this series, I'll show you how to build the UI using SwiftUI and Combine:
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Oh, look who dropped by in Hamburg to get a tour of the Google office! It’s
@mikaela__caron
!
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These might be some of the most lickable UI components I've ever seen. Go ahead and try them out - but be prepared to never come back...
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Someone just said something really nice about a piece of work of mine, and it made me feel sooo good 🤗
Here's your reminder to give praise to people when they did something nice. It doesn't cost you, but it will light up their day ☀️
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Typing calls to methods with many optional parameters used to be a pain. With Xcode 14, this is now much easier, thanks to fuzzy code completion - check this out:
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Time for some Keynote Magic!
Here is how I re-created the animation you can see in Apple's SwiftUI intro tutorial - just using Keynote.
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Version 15.3 beta (15E5178i) includes menu commands for exporting the current preview snapshot. Super useful when you're building DocC tutorials.
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Sign in with Apple is *the* authentication mechanism of choice on iOS. Here is how you can use it in your
@Firebase
project:
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Sound on!
Me when your app asks me to create an account before I can even try it first:
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Can't wait to share w/ you what we've been working on so you can Build with Gemini!
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Building complex form validation logic can be messy. Not so when you combine SwiftUI and Combine:
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Behind the scenes of producing a Firebase Stories interview.
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Inspired by
@merowing_
's talk about
@Injection4Xcode
at
@swiftheroes_it
, I decided to see if this works for
@Firebase
(particularly Firestore) as well. Check this out: hot reloading a SwiftUI app!
With these time savings, I think I can call it a day. Thanks, Krzysztof and John!
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In Not only Swift issue
#49
:
🧠 Gemini LLM in your Swift apps
🛡️ Secure code with Typestate
👀 Trigger property observers
🔁 Overload SwiftUI's onSubmit
⌨️ Xcode keyboard shortcuts
🔑 Don't ship API keys!
🤝 Life of an Open Source dev
👀 A little secret
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Welcome to day 2 of
@swiftheroes_it
! The room is PACKED!
First presentation of the day
@swiftheroes_it
:
@icanzilb
takes us on a roller coaster of UI development through the years, starting with text-based UIs: “A 100% SwiftUI app”
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@twostraws
Show build times in Xcode's status bar:
defaults write .dt.Xcode ShowBuildOperationDuration YES
(all on one line)
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As a Developer Advocate, I am legally obliged to eat avocado toast at least once a week:
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🔥 Quick Firebase Tip 🔥
Most of Firebase's API calls are asynchronous. If you're using Swift, you've got three options to make asynchronous calls:
1) Trailing closures
2) Combine
3) async/await
Curious to learn more? Read on 👉🏻 /1
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👋🏻 Hey
#visionOS
developers! If you're trying to add Firebase to your visionOS project, and the compiler just shows you a long list of errors, don't fret!
Instead, set FIREBASE_SOURCE_FIRESTORE=1 before launching Xcode:
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When building UIs in SwiftUI, you can easily end up with a large chunk of code that is hard to understand.
Here are three simple things you can do to fix this:
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🔥 Quick Firebase Tip 🔥
Most of Firebase's API calls are asynchronous. If you're using Swift, you've got three options to make asynchronous calls:
1) Trailing closures
2) Combine
3) async/await
Curious to learn more? Read on 👉🏻 /1
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The new Swift macros are 🔥 stuff!
Macros enable you to write code that generates code from your code.
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SwiftUI's view styling APIs are one of the most underappreciated parts of the framework. Learn why they are much more powerful than you might have thought.
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Finishing up my script for “Getting Started with Firestore on iOS” before heading to the studio at Google’s London campus at King’a Cross. Can you spy Sparky?
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I know I’m not the only one who is super excited about this milestone - *all* of Firebase’s products can now be integrated using Swift Package Manager.
👏🥳 And with this, *all* Firebase's products now support Swift Package Manager.
Check out the blog for full details →
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I hear
@FloWritesCode
is in the UK at
@swift_leeds
- but he’s also at
#FirebaseSummit
in New York in
@charlotteCLiang
’s talk thanks to his work on the
@FirestoreQuery
property wrapper! 🔥
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Calling all Swift developers - if you're interested in using Swift in Cloud Functions for Firebase, vote on this UserVoice idea suggested by
@mortenditlevsen
:
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SwiftUI can render basic Markdown, but sometimes you need more advanced features, like tables, headings, blockquotes, and more.
@gonzalezreal
wrote a fantastic library for this: MarkdownUI.
Check it out:
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Can you map a struct to a Firestore document and save it to a collection in a single line of code?
Reply here with your solutions and come back tomorrow to compare notes!
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Did you know Firestore supports Codable out of the box, making mapping documents to Swift types a one-liner?
Interested to learn more? I’m working on a comprehensive article - feel free to follow along as I write it:
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So I condensed all the cool new pieces of information from this conversation and some additional research into a blog post. Thanks to everyone who contributed! Enjoy:
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Apple announced that they are going to open source Foundation, written entirely in Swift, for Swift.
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A common source of confusion I see in many StackOverflow questions is that most Firebase API calls are asynchronous. Here is how to call them:
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Going by train has the undoubted advantage of having some quiet time to work on my slides.
#appdevcon
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Some exciting things coming in Swift 5.5. For example, here are some refactorings to help you migrate your callback-style code to using async/await.
Great work by
@_hamishknight
!
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The official Swift Programming Language book is now published with DocC.
Can't wait to see interactive tutorials for all the language features!
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Having trouble catching up on all of the 175 videos Apple released at WWDC23?
@WWDCNotes
is here to help by providing written summaries of many of the sessions.
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SwiftUI is constantly evolving: actionSheet has been deprecated, but confirmationDialog offers a much better API.
Learn more about confirmation dialogs and interactive dismissal (and how to prevent it):
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When building UIs in SwiftUI, you can easily end up with a large chunk of code that is hard to understand.
Here are three simple things you can do to fix this:
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My post about error handling in Combine is taking shape! Currently at 14k characters, and there’s still ground to cover. Interested in reading a preview? If this tweet gets at least 14 likes, I will share a preview link. I might or might not write about incremental back off…
@migueldeicaza
I'm working on a blog post about error handling in Combine that shows some techniques for exposing errors to the actual users (in the screenshot above, this is mostly for the developer's benefit).
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ICYMI: Firestore supports Codable. No need to map your documents manually. Codable also gives you all the flexibility you need (changing attribute names, mapping only partial documents, etc.). Full details in our comprehensive guide:
📑💯 Friends don't let friends map their Firestore documents manually.
In this episode of
#FirebaseBytes
,
@peterfriese
shows you how Codable can help map your documents, with code that's easier to read and less error-prone.
Start learning →
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Firebase developer writing SwiftUI code at their desk in the Google office.
Gotta love the fireplace 😍
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🎁 We're GIVING AWAY three tickets to our workshop "SwiftUI & Firebase" at plSwift next week!
For a chance to win, like and RT this tweet - we will draw the lucky winners tomorrow.
Details about the workshop:
Firebase & SwiftUI workshop by
@peterfriese
and
@coelho_dev
- authentication
- fetching data
- real-time sync
- security rules
and much more, all using Combine and async/await
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If you're using xcodes to download and install Xcodes (you should!), you'll want to make sure to install aria2 as well. This will use up to 16 parallel connections, making the process **a lot** faster.
See the docs:
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iOS developers - I'm curious: do you run a personal blog, and if so, where do you host it?
Feel free to reply with a link to your blog (after voting, of course)!
Hashnode
47
Dev Community
29
Medium
124
Self-hosted
268
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SwiftUI - Greatest Hits of 2022 w/
@malinsundberg
at
@IOSDEVUK
#iOSDevUK
- answering the question “can you build apps entirely in SwiftUI?”
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