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DEVELOPMENT Kotlin Android Development Kotlin Non-Nullable Pitfall Under what circumstances a non-nullable value might be null.

DEVELOPMENT Android Kotlin Development Pairs and Triples in Kotlin (And Why You Shouldn't Use Them) An under the hood overview of pairs and triples in Kotlin. TUTORIALS Java Kotlin PDF How To Converting a PDF to an Image in Java How to convert PDFs to images using PSPDFKit Library for Java. TUTORIALS Java Kotlin PDF How To Java PDF Editor: How to Programmatically Edit PDFs Using Java Learn how to edit PDFs with PSPDFKit's Java PDF editor library. DEVELOPMENT Kotlin Android How To Development Kotlin Context Receivers — A Preview A short summary about the upcoming Kotlin feature, context receivers. TUTORIALS Java Kotlin PDF How To Programmatically Editing a PDF Using Java How to use PSPDFKit Library for Java to perform various editing operations on a PDF document programmatically. BLOG Android Kotlin Insights Java-to-Kotlin Conversion Best Practices This blog post provides a few handy tips for performing Java-to-Kotlin conversion. DEVELOPMENT Android Kotlin Jetpack Compose Insights Development How We Expose Jetpack Compose APIs A few lessons we learned about API design for modern Android.

DEVELOPMENT Android Kotlin Tips Development Autosizing Fonts for Android EditTexts Transfer Android's TextView autosizing capability to EditTexts DEVELOPMENT Android Kotlin Jetpack Compose UI/UX Development Introducing Jetpack Compose Support The Android PDF SDK you know and love now supports Jetpack Compose! TUTORIALS Android Kotlin How To Jetpack Compose PDF Opening a PDF in a Jetpack Compose Application How to open a PDF in a Jetpack Compose application. TUTORIALS Android Kotlin Java How To Creating and Filling Out Forms Programmatically on Android This blog post shows how to create and fill out forms programmatically on Android. DEVELOPMENT Android Kotlin Development Avoiding Primitive Type Saturation in Kotlin Enough of fun getString(string: String): String – let's make greater use of Kotlin's powerful type system. TUTORIALS Android Kotlin PDF How To Annotations Embedding Audio in PDFs: Sound Annotations in Depth An introduction to PDF sound annotations. TUTORIALS Android Kotlin How To Converting an Image to PDF in Kotlin Learn how to convert an image to PDF using PSPDFKit for Android and Kotlin. TUTORIALS Android Kotlin Security Signing PDF How To Digital Signing on Android How digital signing and contained signatures on Android work. TUTORIALS Android Kotlin How To Performing OCR on Android A post showing how to use PSPDFKit for Android to perform OCR on scanned documents.

DEVELOPMENT Android Kotlin Insights Development How Updating to Kotlin 1.4 Broke Our Linter Rules How the update to Android Gradle plugin 4.1 and Kotlin 1.4 can break custom linter rules, and how to fix it. TUTORIALS Android Kotlin How To Redaction How to Create Multiple Redactions with Search on Android Learn how you can leverage the redaction functionality of PSPDFKit for Android to effectively remove text patterns from documents. TUTORIALS Android How To Kotlin Adding a Persistent Annotation Sidebar Learn how to put together all the components PSPDFKit provides to build a custom Annotation UI. DEVELOPMENT Android Kotlin Tips Productivity Development Think First, Code Later A case study on how we design features and APIs for PSPDFKit for Android. DEVELOPMENT Android Kotlin Tips Productivity Testing Development How to Reduce Flakiness in Automated UI Testing on Android This blog post discusses tips and best practices on how to reduce flakiness in automated UI testing on Android. TUTORIALS Java Kotlin PDF How To How to Merge Two or More PDFs into a Single PDF Using Java (or Kotlin) Learn how to merge multiple PDFs in Java (or Kotlin) the simple way — with code examples, explanations, and extra features. DEVELOPMENT Android Kotlin Tips UI/UX Development Change Android Themes Instantly Using the Circular Reveal Animation This blog post investigates how to achieve nice animations when changing themes. TUTORIALS Android Kotlin PDF How To Inserting an Image into a PDF on Android We provide a step-by-step explanation of how to insert an image into a PDF on Android.

TUTORIALS Android Kotlin How To Persisting the Tabs State on Android A blog post describing how to persist the tabs state inside PdfActivity. DEVELOPMENT Android Kotlin Tips Accessibility Insights Development How We Improved Keyboard Navigation Accessibility in Our Android SDK A look at the steps we took to start improving the accessibility of our Android SDK. TUTORIALS Android Kotlin PDF How To Add a Watermark to a PDF on Android How to add a watermark to a PDF on Android. TUTORIALS Android Kotlin PDF How To Merge PDF Documents on Android We'll take a look at two ways to merge PDF documents on Android. DEVELOPMENT Android Kotlin Java Insights Development What Is an Intent? An overview of intents, their uses, and pitfalls to consider. DEVELOPMENT Android Kotlin Tips Development How Do I Fix NetworkOnMainThreadException? A post detailing what NetworkOnMainThreadException is and how to prevent it. TUTORIALS Android Kotlin PDF How To How to View PDF on Android This article presents existing free or open source libraries for opening PDF files in Android apps. DEVELOPMENT Android Kotlin Tips Development Retaining Objects Using a Fragment An overview of how to use a fragment to retain objects during a configuration change. DEVELOPMENT Android Kotlin Insights Development Kotlin Coroutines A look at Kotlin coroutines and how they compare to other solutions for concurrency. DEVELOPMENT Android Kotlin Tips Jetpack Compose Development Using ViewModels to Retain State on Android How to use Android's ViewModel class to retain complex objects across configuration changes. DEVELOPMENT Android Kotlin JavaScript React Native Development Sharing Business Logic Using React Native Not only can React Native be used to provide the UI for your application, but it is also a convenient way to share business logic. DEVELOPMENT Android Kotlin Tips Instant Development How to Test REST API Clients in Android Apps This article shows how we built simple and flexible integration tests for PSPDFKit Instant that are using a custom abstraction layer on top of an OkHttp mocked web server. DEVELOPMENT Android Kotlin Tips Development Using the Bottom Navigation View in Android An introduction to implementing bottom navigation in your app with a simple example that incorporates synced page switching as well.

DEVELOPMENT Android Kotlin Insights Development What are Kotlin contracts and how are they useful? An overview of the experimental Kotlin Contracts API. DEVELOPMENT Android RxJava Kotlin Tips Development RxJava for Multi-Level Data Retrieval RxJava can be useful for many things, and in this post, we’ll have a look at how to use it to add offline support to your app. DEVELOPMENT Android Kotlin Tips Development Moving Your Gradle Build Scripts to Kotlin Another take on writing your project's Gradle build files in pure Kotlin code. TUTORIALS Android Kotlin How To PDF Best PDF Viewer for Android: How to Create a PDF on Android Discover the best PDF viewers for Android and learn how to create PDFs with different methods, from using built-in tools to integrating powerful libraries like PSPDFKit. DEVELOPMENT Android Java Kotlin Tips Development Async Stacktraces in Android Studio How to create asynchronous stacktraces in Android Studio and IntelliJ. DEVELOPMENT Android RxJava Kotlin Insights Development RxJava Is Async yet Blocking An explanation of why RxJava is both asynchronous and blocking. DEVELOPMENT Android Kotlin Insights Development Using Kotlin to Make the PSPDFKit API Even Better Kotlin provides the ability to extend any class with new functionality, and we can use this to expand the PSPDFKit API. DEVELOPMENT Android Kotlin Insights Development Simple Kotlin Tips for Beginners Useful tricks for beginners to start writing better code with Kotlin.

DEVELOPMENT Android Kotlin Java Security Development Secure Media Playback on Android Picking smart defaults with security in mind when playing videos on Android. DEVELOPMENT Android Kotlin RxJava Tips Development Writing Concise Code with Kotlin and RxJava Tips and tricks how to write readable, concise, and beautiful code using the Kotlin language and RxJava.

DEVELOPMENT Android Kotlin Java Tips Development A clean status bar with Android System UI and QuickDemo How to enable Android's demo mode using a quick setting tile DEVELOPMENT Android Java Kotlin Development Restoring State in Android MVP Architecture State restoration is an important part of the Android framework, but we might encounter problems with it when implementing MVP architecture. DEVELOPMENT Android Kotlin RxJava Tips Development Android animations powered by RxJava The purpose of this post is to show you how to combine RxJava features with animations on Android to create a great user interface without a lot of nested code. DEVELOPMENT Android Kotlin Development Kotlin-Ready Online Guides Our Guides received a large update – now with Kotlin usage examples.