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2023

Illustration: Developing Mixed-Source Swift Packages DEVELOPMENT  |  iOS • Swift • Objective-C • Tips Developing Mixed-Source Swift Packages Tips for publishing Swift packages that include both Swift and Objective-C source files.
Illustration: Uncovering SourceKit Limitations While Updating Our API Documentation DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Uncovering SourceKit Limitations While Updating Our API Documentation A post that goes into detail on how moving to Swift-first API documentation uncovered issues in SourceKit.

2021

Illustration: Reverse Engineering UIKit to Fix Our Top Crash DEVELOPMENT  |  iOS • Objective-C • Debugging • Insights Reverse Engineering UIKit to Fix Our Top Crash This blog post describes the process of reverse engineering UIKit to identify and fix our top crash in PSPDFKit for iOS.
Illustration: Deflaking CI Tests with xcresults DEVELOPMENT  |  iOS • Swift • Objective-C • Xcode • Testing Deflaking CI Tests with xcresults We’re sharing some techniques for tracking down and fixing flaky Xcode tests on CI.
Illustration: How to Bridge Native PSPDFKit for iOS Code to Flutter TUTORIALS  |  iOS • Flutter • Objective-C • How To How to Bridge Native PSPDFKit for iOS Code to Flutter A tutorial about how to bridge native PSPDFKit iOS code to Flutter.

2020

Illustration: Direct Calls with Objective-C DEVELOPMENT  |  iOS • macOS • Objective-C • Performance • Insights Direct Calls with Objective-C Apple introduced the objc_direct attribute in Xcode 12. Learn what it does and how you can use it to your advantage.
Illustration: NULL-Characters in Strings and Tales of Apple Radar DEVELOPMENT  |  iOS • Swift • Objective-C • Insights NULL-Characters in Strings and Tales of Apple Radar In iOS 11, Smart Punctuation caused data loss. Learn how we fixed the issue and how we are now cleaning up the OS-level workaround.
Illustration: An In-Depth Look at Blur Effect Materials on iOS TUTORIALS  |  iOS • Swift • Objective-C • UI/UX • Insights An In-Depth Look at Blur Effect Materials on iOS This blog post talks in detail about the blur effect materials on iOS and the challenges we faced in picking the appropriate effect for our SDK.
Illustration: Preventing Surprisingly Large Objective-C Type Encodings DEVELOPMENT  |  iOS • Objective-C • Tips Preventing Surprisingly Large Objective-C Type Encodings Objective-C stores type encoding in the binary. These encodings can become surprisingly large.
Illustration: How to Bridge Native iOS Code to React Native TUTORIALS  |  iOS • React Native • Objective-C • How To How to Bridge Native iOS Code to React Native A video tutorial about how to bridge native iOS code to React Native.
Illustration: How to Add Attribution to PDFs with PSPDFKit for iOS TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To How to Add Attribution to PDFs with PSPDFKit for iOS Learn how to include attribution when sharing the contents of a PDF.
Illustration: Adopting UIAppearance in Custom Views DEVELOPMENT  |  iOS • Swift • Objective-C • Tips • UI/UX Adopting UIAppearance in Custom Views Learn how to support styling your own custom views using UIAppearance.

2019

Illustration: Adopting Dark Mode on iOS and Ensuring Backward Compatibility DEVELOPMENT  |  iOS • Swift • Objective-C • UI/UX Adopting Dark Mode on iOS and Ensuring Backward Compatibility A comprehensive overview of adopting Dark Mode in an iOS app, along with a few tips to make the process of development easier.
Illustration: Customizing Segmented Controls in PSPDFKit TUTORIALS  |  iOS • Swift • Objective-C • How To Customizing Segmented Controls in PSPDFKit We show how to customize the segmented controls in the document info coordinator.
Illustration: How to Create a Game with PDF and JavaScript TUTORIALS  |  iOS • Objective-C • JavaScript • How To How to Create a Game with PDF and JavaScript This blog post explains how to extend the link creation API in PSPDFKit to create JavaScript actions and build a simple tic-tac-toe PDF game.
Illustration: Is My Document a Valid PDF? TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To Is My Document a Valid PDF? This article looks at multiple factors used to determine the validity of a PDF.
Illustration: Secure Documents with PSPDFKit for iOS TUTORIALS  |  iOS • Swift • Objective-C • PDF • How To • Security Secure Documents with PSPDFKit for iOS How to secure documents using PSPDFKit for iOS.
Illustration: Embracing the Limits of UIActivityViewController DEVELOPMENT  |  iOS • Objective-C • Insights Embracing the Limits of UIActivityViewController We talk about our experience in implementing the new sharing flow.
Illustration: Writing and Maintaining Good Code Documentation DEVELOPMENT  |  iOS • macOS • Swift • Objective-C • Tips Writing and Maintaining Good Code Documentation Tips, tricks, and techniques for documenting your code the correct way.
Illustration: Converting an Attributed String to a PDF TUTORIALS  |  iOS • Swift • Objective-C • How To Converting an Attributed String to a PDF How to convert a string with formatting to a PDF.

2018

Illustration: Self-Sizing Table View Cells in Practice DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Self-Sizing Table View Cells in Practice A look at self-sizing table view cells for apps supporting iOS 10, 11, and 12, covering three implementation approaches and some pitfalls I encountered supporting these across our UI in PSPDFKit.
Illustration: Using Signposts for Performance Tuning on iOS DEVELOPMENT  |  iOS • Swift • Objective-C • Performance Using Signposts for Performance Tuning on iOS A look at the different ways that we measure and try to improve performance at PSPDFKit.
Illustration: Challenges of Adopting Drag and Drop DEVELOPMENT  |  iOS • Objective-C • Insights Challenges of Adopting Drag and Drop A recap of how we integrated drag-and-drop support into our Document Editor in iOS.
Illustration: Failable Methods with Djinni DEVELOPMENT  |  iOS • Android • C++ • Objective-C Failable Methods with Djinni In this article, we have look at using result types to model failable computations in the Djinni IDL.

2017

Illustration: Even Swiftier Objective-C DEVELOPMENT  |  iOS • Swift • Objective-C Even Swiftier Objective-C
Illustration: Linting and Code Formatting at PSPDFKit DEVELOPMENT  |  C++ • Objective-C • Java • JavaScript • Tips Linting and Code Formatting at PSPDFKit How we do code formatting in C++/Objective-C/Java/JavaScript
Illustration: Internationalization - Right to Left Support for Mobile Apps DEVELOPMENT  |  iOS • Objective-C • Xcode Internationalization - Right to Left Support for Mobile Apps What Right to Left Support Actually Means and How We Implemented It
Illustration: The Struggle with Action Extensions DEVELOPMENT  |  iOS • Objective-C • Tips The Struggle with Action Extensions Pitfalls when developing a Share or an Action Extension
Illustration: The Case for Deprecating UITableView DEVELOPMENT  |  iOS • Swift • Objective-C • Insights The Case for Deprecating UITableView
Illustration: Super Fast Builds Using distcc DEVELOPMENT  |  Android • iOS • Objective-C • C++ Super Fast Builds Using distcc How to dramatically shorten your build times with distcc.

2016

Illustration: Spicing up status messages DEVELOPMENT  |  iOS • Objective-C • Tips • UI/UX Spicing up status messages At PSPDFKit, we likely spend just as much time polishing the UI as we do implementing PDF features or tweaking the performance. Here's a look at how one of our developers explored improving our status messages.
Illustration: Swifty Objective-C DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Swifty Objective-C
Illustration: Surprises with Swift Extensions DEVELOPMENT  |  iOS • Swift • Objective-C • Insights Surprises with Swift Extensions