Peter Steinberger
@steipete
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Recovering founder and coder. I bootstrapped a remote company before it was cool. Founder @PSPDFKit (exit to Insight). Also on the blue app. 🏳️🌈
Vienna, Austria
Joined March 2009
I've been coaching @cristinaponcela trough the nonprofit @OutInTech, and it's been *so* rewarding. Forgot how fun it is to work with someone brilliant and motivated. A month ago she didn't even had a Mac or a website, and now she's already mentioned in @iOSDevWeekly. 🥳.
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I can’t upgrade the firmware of my electrical toothbrush because I once did jailbreak my phone, and while that is no longer the case with running iOS 14, some files likely did remain so @Philips locks me out. cc @internetofshit
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How’s the Telegram app a nice native macOS app (~140MB) and WhatsApp (with Meta having like 100x more engineers) an Electron hog that needs ~4GB.
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Tried the GDPR data export from Spotify. By default, you get like 6 JSON files with almost nothing. After many emails and complaining and a month of waiting, I got a 250MB archive with basically EVERY INTERACTION I ever did with any Spotify client, all my searches. Everything.
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📣 Professional News: After 10 years of building PSPDFKit, I am moving into an advisory role. Really proud of what we’ve achieved so far, and with Insight Partners we team up with an investor that really understands our business & remote culture and will help us grow even faster.
PSPDFkit raises $116M, its first outside money; now nearly 1B people use apps powered by its collaboration, signing and markup tools by @ingridlunden.
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We’re slowly reaching the state where developing on Windows is better than macOS.
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Apple introduced "ListFormatter" in iOS 13 and it's an underused gem.
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Xcode. Not XCode, xCode or xcode. If you work full-time in Apple‘s dev ecosystem and spell this wrong, it says a lot about attention to detail.
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“My boss invited me for a one-on-one chat where they politely asked me to revert my change. I was aghast. The old code was a mess, and mine was clean!. I begrudginly complied, but it took me years to see they were right.”
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Task for you all: Switch the search engine to DuckDuckGo when you visit your parents this Christmas. They won’t notice and it’s just as good. Without the evil and creepy part of Google.
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They even store the brand of headphone I use. How do you even get that data, digging deep in CoreBluetooth?
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📣 Can you switch to an M1 MacBook as main dev machine? I've spent a week trying just that.
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I love the latest Facebook update. Makes me so much more productive! Now please let’s get that feature to Instagram and Twitter as well please.
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Writing UIKit in Objective-C after being in SwiftUI-Land.
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Setting a random background color is a great way to detect an accidental SwiftUI loop. The tricky part is understanding what triggers the loop tho.
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Google’s Crashlytics is now open-source! .(PR isn’t merged yet, but good enough to start digging in). This is great news for all the 10😅 Mac Catalyst developers out there waiting for a solution on crash reporting.
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The static analyzer in Xcode 8.3b definitely leveled up!
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TIL: “Starting with iOS 15, the system might decide to “pre-warm” your app before the user actually tries to open it and this can increase the chances of protected data not being available when you think it should be.”
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I wrote all this json structure code myself and just now discovered -.-.This would have saved me DAYS.
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"UILabels are actually stored as bitmaps, which could easily consume megabytes of memory. If you have labels that you sometimes set to hidden, set their text value to nil when they are no longer visible.”
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Farewell, old friend. He was 18. Loved my garden and meowed whenever he slept between me and the keyboard when I was coding too fast. The last year wasn‘t so easy anymore. Over the Rainbow Bridge, you go. 🌈
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I usually don‘t do political tweets, but I‘m proud of that.
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Wow is @Medium reaching a new level of aggressiveness? I’m not gonna make a login just to read an article. People, please use your own blog, don’t surrender control of your content. @MediumSupport
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Made the jump to iOS 12 and it’s basically a faster 11. No crashers so far, no incompatible apps. I am in the game since iOS 3 and never seen such a stable first beta. Props to the teams there!.
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Something tells me nobody tried logging into a VPN since the Big Sur transition to iOS-style alerts. 😬
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The earth is literally burning because humanity can’t work together, but sure, Bitcoin will save us.
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We added metrics to see who's not using default font size on iOS, and the numbers were surprising! If you don't support Dynamic Type, you'll worsen the experience for at least a quarter of your users. Detailed stats + tips to support inside.
📱 🔍 More than a quarter of @pdfviewerapp users choose a non-default text size. Supporting Dynamic Type is not just a convenience feature - it helps make your app accessible to people who would normally not be able to use it.
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Here’s my take on SwiftUI and Jetpack Compose, how React Native and Flutter set the scene and what it means for the future of app development.
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C++17 is done! Here’s a quick overview of what’s new and what’s better.
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Homebrew 3 is out with native support for Apple Silicon!
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Austria legalizes gay marriage in 2019! I am no longer a second class citizen. 🏳️🌈❤️.
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Austria now offers an app to sign PDF documents with the same legal standing as a wet signature (via PAdES). They chose our PDF SDK. Mighty proud!.
🔏 Digitales Amt is an application implemented by the Austrian government in cooperation with the Austrian Federal Computing Centre (BRZ). Learn how the Austrian government uses our PDF SDK to bring digital signatures to everyone.
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If you run tests on CI, consider setting. COMPILER_INDEX_STORE_ENABLE=NO. In your xcconfig file. Nice speedup, and you don’t need Xcode’s indexing-while-compiling on CI nodes.
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The more I understand SwiftUI, the more I love it. Yes, there are bugs and warts, but what we have in iOS 14 is pretty amazing already. You’re just so fast to get things done. Im excited to see this framework grow at WWDC.
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Huh, there's a way to prevent the user deleting your app on iOS.
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Say what you want, but SwiftUI is extremely fun to use. I built a Twitter client in a few hours, starting with a base knowledge of basically zero, just by watching the 2020's Swift Intro from WWDC.
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Wow, App Store downloads changed massively since the pandemic event! (data is from @appfigures)
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Got @pdfviewerapp running on Marzipan 🤯. Featuring inline video, page curl, popovers, scrolling, text selection, inline forms, adding text, color inspector, search, editing documents - almost everything works. Took me half a day. Project is 1MLOC ObjC/C++. Major props to Apple!
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📣 New Blog Post: Jailbreaking for iOS Developers. If you don't try unc0ver this week, you're really missing out!
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I wish Apple would enforce SFSafariViewController on app review. Facebook‘s new „mobile browser“ is a joke and Instagram doesn‘t even offer to jump to Safari, have to copy the URL like a caveman. Won‘t change because KPIs/„engagement“. Props to Twitter for adopting it!.
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Shoutout to Toni. He takes time out of his day after every @pdfviewerapp update to give us an updated 1-star review because we don’t translate our *release notes* to German. Hardly anyone notices them. But Toni does. And he cares. A true patriot. He did this 36 times so far.
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Is that a stock feature? Completely undiscoverable.
Don’t move, mark, or delete emails one by one. Swipe down with two fingers over your messages to select multiple items in iOS 13 and iPadOS. Like this.
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If you're Bank of America, your view gets an additional setNeedsLayout in UIKit.
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Who at @github do I have to bribe to allow uploading MP4 files? It's cumbersome that we need to zip them so we can attach screen-recordings to pull requests. @natfriedman @rnystrom
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Don‘t use Medium.
So much helpful iOS content published years ago, now hidden behind a paywall. What a bummer.
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One of our junior devs built Snake inside a PDF. I smell a pivot.
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PSA: You want to add http/https to LSApplicationQueriesSchemes.
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Proud to have the possibility to give back to this amazing community! 💙.
📢 CocoaPods is a dependency manager for Apple’s platform, and it powers 75 percent of all apps made. Before, the CDN costs to keep the repo running were paid by an individual, but PSPDFKit is now taking care of the costs.
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I opened and closed a Storyboard. Didn’t do anything with it.
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Advanced Debugging with Xcode and LLDB is a must-watch. I learned quite a few new tricks, such as using backticks to eval Swift before using ObjC. Also, that 🚽 shortcut is just great.
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“Apple isn’t paying OpenAI as part of the partnership (…) Instead, Apple believes pushing OpenAI’s brand and technology to hundreds of millions of its devices is of equal or greater value than monetary payments.”
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fastlane is joining the Mobile Native Foundation! Thanks to everyone pushing for that!
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“Phil Schiller says the goal of the App Store was to treat everybody the same”. Riiiight. Some get these special entitlement exceptions, others don’t even get a reply when they ask. All animals are equal, but some animals are more equal than others.
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After a two years burnout-hiatus, I finally found motivation to work on something new. Using web tech this time, not interested in dealing with walled gardens anymore.
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Objective-C is 36 years old.
HTML is 27 years old. CSS is 23 years old. JavaScript is 24 years old.
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Apple playing hurt baby. The App Store helped Spotify so much!! We provide all the API!!1!. Nobody would buy iPhones without support for apps. It’s in their own best interest to provide a dev toolkit and support.
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Google just blank out removed our Android app on Christmas night from the store without prior warning, for a small metadata issue that can be fixed in 20 seconds. But no, we need to upload a new binary. I prefer Apple’s process of reviewing. Before, not at a random time after.
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“Though it seemed completely automated, Just Walk Out relied on more than 1,000 people in India watching and labeling videos to ensure accurate checkouts.” 🤣💀
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📢 Extremely proud to ship the 1.0 of PDF Viewer for iOS. It’s free, it’s powerful, and we’re just getting started!
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Meanwhile, my new MacBook Pro came! At least parts of it 🙃
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📣 InterposeKit is a modern library to swizzle elegantly in Swift. This one has a few cute features: replacing the implementation instead of the problematic selector dance, listening for class loading, add code before/instead/after and undo your hooks.
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defaults write com. apple.dt.Xcode XcodeCloudUpsellPromptEnabled -bool false.(remove the space after com.).
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Bought a flat in London. New life chapter starting soon! 💃.
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📣 The Case for deprecating UITableView. Yes, for real. No, we’re not crazy.
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Fun fact: Amazon is calling me Ralf for about 10 years now. Over the years I tried various ways through their support to change that, but they can't figure it out. Every single name entry is set to Peter, yet every email is sent to Ralf. 🤷♂️
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Reminds when at the time I asked the Safari Mobile team how they managed to build all these smooth transitions with custom view controller presentation. “Oh nononono, the whole app is one view controller, rest is just views that we animate. You can’t really build that with VCs”.
Notice what happens when tapping “Write a review” when a card in the App Store is open. Someone didn’t use custom UIVC transitions to implement cards…
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Remember when we laughed about Android’s variety of screen sizes?.
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„One group I knew at Apple even made “Not a Regression” T-shirts. If a bug isn’t a regression, they don’t have to fix it. That’s why the iCloud photo upload bug and the contact syncing bug I mentioned above may never be fixed.“
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That’s a pretty good article on how to mess with AppStore apps/inject custom code.
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Upgraded to the new 16-inch MacBook Pro. What a beast. Keyboard feels old-school-great. Compiling is easily 20% faster than the mid 2019 model WITH THE SAME CPU. Just because it has better thermals. (No, I’m not getting a c̶a̶r̶ Mac Pro).
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OMG I can finally delete my 2009 app experiments.
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📣 Folks, we have an opening on our iOS team again. Come work with me!. Upside: Remote, great team, interesting challenges. 40 hours are enough. Downside: Objective-C++ 🤡, Everyone does support, writes docs and blog posts. Apple might hire you away.
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Apple now runs ObjC in the browser. 🤯.
What have I been working on lately? Just a few days ago, iWork 10.0 shipped with iCloud apps that now include features extracted from the native codebase (C++/ObjC), using WebAssembly!.
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