Archive

2023

DEVELOPMENT iOS Insights Debugging Tips Development Debugging in iOS: Resolving UITextView Flickering Issues A debugging story that includes some tips and tricks DEVELOPMENT SwiftUI iOS Swift Development Debugging A Tryst with SwiftUI, Or: How I Learned to Stop Worrying and Enjoy Building UIs A blog post about one of our engineers and his experience using SwiftUI.

2021

DEVELOPMENT iOS Objective-C Debugging Insights Development 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. DEVELOPMENT iOS Swift Tips Debugging Development Debugging Image Loading and Cropping Performance on iOS We talk about using the Image I/O and Core Graphics APIs to improve the image loading and cropping performance in the PSPDFKit iOS SDK. DEVELOPMENT Signing PDF Debugging Support Development How We Debugged a Customer Problem with a Signed PDF This blog post details how the PDF expertise of the PSPDFKit team helped unblock a customer with a tricky PDF problem. DEVELOPMENT Web Tips Debugging Insights Development How to Identify Browser Bugs Strategies to adopt for identifying browser bugs, and what to do after spotting one. DEVELOPMENT C++ Tips Debugging Development Time Travel Debugging for C/C++ A quick look at reverse debugging/time travel debugging for C/C++.

2020

DEVELOPMENT Swift Tips Debugging Development An Introduction to LLDB Reproducers An introduction to an experimental feature in LLDB, Reproducers, that helps reproduce bugs in the debugger itself. DEVELOPMENT Web JavaScript WebAssembly Debugging Insights Development The State of Debugging in WebAssembly We share our tips and tricks for debugging issues in WebAssembly and look to the future to see what's coming. DEVELOPMENT iOS Swift Debugging Insights Development The Hidden Trap in Selective Table View and Collection View Reloads Learn how to properly update cells in a table view or collection view without crashing. DEVELOPMENT Web Debugging Insights Development Text Selection Regression in Chrome 83 How we noticed a Chrome regression and shipped a workaround in a timely fashion. PRODUCTS macOS Releases Debugging Introducing PDF Inspector PDF Inspector is a powerful diagnostic tool for reading and analyzing PDF files.

2019

DEVELOPMENT Android Debugging Development NDK Debugging A set of tips for debugging native NDK code in Android apps. DEVELOPMENT C++ Tips Debugging Development When C++ Doesn't Move C++ move semantics make your code more efficient, but sometimes a move is not performed. In this blog post, we explore why. DEVELOPMENT Web Debugging Development Debug Emscripten with the Tracing API How to debug memory usage in an Emscripten app. DEVELOPMENT iOS Swift Tips Debugging Development Adding Logging to Crash Reports Understanding crash reports is often difficult without extra context. Learn how we attach application logs to crash reports via Google's Firebase Crashlytics in the free PDF Viewer for iOS app. DEVELOPMENT Android Debugging Development Android Debug Bridge Tricks and Tips An introduction to Android Debug Bridge (adb) and an overview of some tricks. DEVELOPMENT Android Tips Debugging Development Inspecting APK Files This article discusses the basics of Android reverse engineering using the Apktool, smali, and Java decompilers.

2018

DEVELOPMENT iOS Debugging Tips Development How to Extend LLDB to Provide a Better Debugging Experience Explore the extensibility capabilities of LLDB, a debugger for Swift, C, C++, and Objective-C code. DEVELOPMENT Android Debugging Productivity Development The Subtle Art of Real-Time Debugging With Android Studio Debugging in real time with Android Studio.

2017

DEVELOPMENT iOS Debugging Xcode Development User Breakpoints in Xcode User breakpoints are a not very well known feature in Xcode but they are very powerful and can improve your debugging experience and show issues more prominent. DEVELOPMENT Android Tips Debugging Development How to Fix a Bug, Blindfolded. This is a story about fixing a bug, even when all the tools go kaput.

2016

DEVELOPMENT iOS Debugging Tips Development Debugging a specific instance with scripted breakpoints When debugging an issue that is somewhere deep inside your code, you easily end up debugging a class that has lots of living instances. Sometimes, you are only interested in a very particular one. This can become very tedious work. DEVELOPMENT iOS Debugging Tips Development Writing Good Bug Reports At PSPDFKit, we work every day to read through developers' bug reports. In fact, we forward many of them to the engineers at Apple. While this post is Apple-centric, many details can be applied to any sort of bug reporting. DEVELOPMENT PDF Debugging Insights Development Just a simple bookmark When books became digital, bookmarks became more complicated. Instead of stuffing a piece of paper in a book, you now had to store a digital marker, which is not always as simple as it looks. DEVELOPMENT iOS Debugging Development Investigating Thread Safety of UIImage DEVELOPMENT iOS Tips Debugging Development Debugging Rotation Issues Discover how we resolved a freezing issue in our Document Editor app after rotation, ensuring smooth user interaction and event handling.