Mobile og håndholdte enheders programmering. Programmering af apps

Interested in giving Microsoft¿s new Multi-platform App UI (MAUI) a try? This book provides developers with a comprehensive set of tools and hands-on coding to build their own cross-platform applications.The book is a comprehensive end-to-end guide on creating, building, and distributing .NET MAUI applications. As you walk through each new concept, .NET MAUI expert and Microsoft MVP Shaun Lawrence will show the concept's value and uses, and then have you apply it in a build-along application. You will work with this build-along application right up until you are ready to ship it to the relevant stores (e.g., App Store, etc.).The underlying theme through the book is to explain a key concept, show how to implement it directly in order to reinforce your understanding, and then show potential simplifications (e.g., alternative libraries) that can help you reduce the complexities of an applications code base. What You Will LearnCreate a .NET MAUI applicationApply commonly required techniquesApply more advanced techniques to make applications stand outKnow what to consider when distributing applications to the relevant storesTake an application from concept through to productionWho This Book Is ForDevelopers who are new to .NET MAUI and cross-platform development. A basic knowledge of C# is required, but no prior knowledge using .NET MAUI is required. Experienced developers also will find the book useful as it covers topics key to modern day development (such as accessibility, performance, and distribution). Xamarin Forms developers will find the book useful as key features new to .NET MAUI that will aid in the migration from Xamarin Forms to .NET MAUI are explained.

"Learn everything you need to know to use the powerful Unity engine to its full potential for 3D and 2D game development, simulation, artificial intelligence, and beyond. From the basics of scripting to techniques for interactivity, AI and behavior, animation, narrative, and networking, this flexible, mind-bogglingly popular engine is useful for anything that needs visuals and real-time simulation. With this thoroughly updated problem-solving cookbook, beginner and intermediate Unity developers will learn about the Unity engine through brief recipes that teach specific features of the software and scripting systems. You'll apply a collection of snippets of code to address common scenarios such as properly keeping score, accepting input, and sharing state over the network." --

Getting to Know Web GIS, a workbook with detailed, step-by-step exercises, teaches readers how to share resources online and build web GIS applications easily and quickly. It covers Esri's suite of web GIS technologies including ArcGIS Online, ArcGIS for Server, web app templates, WebApp Builder, API for JavaScript, mobile GIS apps, mobile SDKs, CityEngine, and 3D web maps. Holistic Approach: Unlike books that focus on individual products, this book teaches web GIS technologies as a holistic platform. Each chapter completes an application project using multiple products from server side to browser/client side. Easy to Apply: You don't have to be a developer to build web apps. This book facilitates immediate productivity. It teaches how to build engaging web apps without a single line of programming. The two chapters involving programming are easy to follow and don't require a strong programing background. Each of the 10 chapters in this book has a conceptual discussion section that gives readers the big picture and the principles, a system requirements section that helps instructors to prepare for the lab setup, a detailed tutorial section with abundant screenshots that confirm progress along the way, a Q/A section to answer common questions, an assignment section for readers to practice what they have just learned, and a robust reference section. This book is the result of the author's extensive working experience at Esri and teaching experience at Harvard University Extension and other universities. It is a practical manual for classroom lab work and on the job training for GIS students, instructors, GIS analysts, managers, web developers, and a broad range of GIS professionals.

Build production-grade web apps from scratch ¿ without using frameworks ¿ with Kotlin on the Java platform. Yoüll learn how to use and compose libraries, how to choose between different libraries, and the benefits of explicit and straight-forward code, vs. the implicit magic, conventions, and inversion of control you often see in frameworks.The book teaches the Kotlin language by building production-ready Kotlin code. Yoüll gain a deep understanding of the idiomatic use of the Kotlin language along with knowledge of how to apply Kotlin in production-grade web apps. The book also bridges the gap between building from scratch and using existing frameworks. For example, yoüll learn how to integrate Spring Security-based authentication in web apps written from scratch, so you can leverage existing tooling in your organization without having to take on the entire Spring framework. The first section of the book sets up thebase structure of your web app, such as routing, configuration files, and database migrations. The remaining chapters are broken into individual aspects of building production-ready web apps. Appendices at the end of the book explain how to use different libraries than the ones chosen in the main chapters, so you'll learn how to decouple your code from specific libraries, and choose between many different libraries to get the job done in your own web apps.What You Will LearnCompose libraries and manage boilerplate code using idiomatic and powerful KotlinManage and query SQL databases without ORMs and mapping layersWrite resilient and change-proof tests in support of test-driven development practicesCreate traditional, HTML-based web apps, APIs for JavaScript-based single-page web apps and native mobile appsManage parallelism and external service calls using Kotlin co-routinesDeploy to production using embedded servers, WAR files, and serverless approachesBridge the gap between custom-built apps and enterprise, using Spring Context and Spring SecurityWho This Book Is ForThe expert developer who is ready to take full control of the tech stack, and use the Kotlin language, type system, and standard library, to ship production-ready web apps. Readers should have prior programming experience. Experience with Java or another JVM language is helpful.

.NET MAUI in Action teaches you to build cross-platform applications with the skills you already have as a .NET developer. There's no platform-specific knowledge needed to get started; you'll learn everything you need about Android, iOS, and more through the book's hands-on guidance. You'll dive straight into creating apps and rapidly progress from "Aloha World" to To-Do list apps, a movie recommender app, and eventually a full-stack solution using enterprise architecture patterns. You'll also learn how to use GitHub Actions to deploy robust, testable, and maintainable apps. Learn how to deliver a consistent look and feel for your apps across platforms while tailoring your user experience to relevant devices. Throughout, you'll use the built-in controls of .NET MAUI and learn how to develop your own custom solutions. You'll soon be confidently delivering complex apps without mastering platform-specific skill sets. About the reader For experienced .NET developers.

This book is a detailed guide that will help learners get started with NativeScript programming. It talks about the basics and then moves on to practical exercises to help readers quickly gain the required knowledge. This book is meant for both NativeScript developers as well as learners without a formal NativeScirpt background

The authors of this book " Frequently asked Interview Q & A in Scala" have conducted so many Java/J2EE/Scala interviews at various companies and meticulously collected the most effective scala interview notes with simple, straightforward explanations. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for scala interview to start their career in Information technology. Answers of all the questions are short and to the point. This book contains 100+ questions and answers and we assure that you will get 90% frequently asked Scala interview questions going through this book. It will clear your fundamentals, concepts and boost your confidence to appear any Scala interview in any companies anywhere in the world whether it is telephonic or face to face.

Swift has become the number one language used in iOS and macOS development. Frequently Asked Interview Q & A in Swift Programming book contains 100+ questions and answers and we assure that you will get 90% frequently asked interview questions in Swift programming. This book will clear your fundamentals, concepts and boost your confidence to appear any iOS development interview in any companies anywhere in the world whether it is telephonic or face to face.Please check this out: Our other best-selling books are-500+ Java & J2EE Interview Questions & Answers-Java & J2EE Programming200+ Frequently Asked Interview Questions & Answers in iOS Development200 + Frequently Asked Interview Q & A in SQL, PL/SQL, Database Development & Administration100+ Frequently Asked Interview Questions & Answers in Scala100+ Frequently Asked Interview Q & A in Swift Programming100+ Frequently Asked Interview Q & A in Python ProgrammingFrequently asked Interview Q & A in Java programmingFrequently Asked Interview Questions & Answers in J2EE100+ Frequently Asked Interview Questions & Answers in Android DevelopmentFrequently asked Interview Q & A in Angular JSFrequently asked Interview Q & A in Database TestingFrequently asked Interview Q & A in Mobile TestingFrequently asked Interview Q & A in Test Automation-Selenium Testing200+ Frequently Asked Interview Questions & Answers in Manual Testing

With Beginning Android Web Apps Development, you'll learn how to apply HTML5, CSS3, JavaScript, Ajax and other Web standards for use on the Android mobile platform, by building a variety of fun and visually stimulating games and other web applications! If you've done some basic web development, and you want to build your skills to create exceptional web apps, you'll find everything you seek in the discussions and examples in this book.Each application you'll build in Beginning Android Web Application Development will show you solutions that you can apply to many of your own projects. Each example shares techniques and coding solutions that will inspire your own work. You'll learn how to tie your Android apps into Twitter through two apps that you'll build: Who's that Tweet?!, a quiz game based on celebrity accounts, and I Love Ham, a coding investigation into search phrases and rhyming. Your Android web app development skills will then proceed in another direction, as you discover the power of HTML5 in two game apps: Scavenger Hunt, which introduces you to the HTML5 GPS location API, and Spies!, a location-based application that shows you how to use CSS3, Ajax, and HTML5 within multi-player environments. You'll also create an Android web application which checks the arrival time of buses and light-rails through the use of Portland, Oregon's open Tri-Met data API! This app is a great template for other apps you may want to build in the future, and showcases the important techniques for incorporating cloud-based apps into web games. After reading Beginning Android Web Apps Development, you will have built real apps and developed along the way the skills you'll need to create highly interactive, professional web applications... and, your journey will be engaging and enjoyable!

Understand and develop immersive animations along with animated stickers for Telegram using Bodymovin, After Effects and LottieFiles and integrate them in your React Native apps using this color guide to UI animationsKey Features:Explore key principles of storytelling, 2D digital animation, and design thinkingCreate animations in After Effects, learn how to export them with both Bodymovin and LottieFiles plugins, and tweak them using the LottieFiles platformUnderstand how to implement Lottie animations with React NativeBook Description:Lottie is a small and scalable JSON-based animation file. LottieFiles is the platform where Lottie animations can be uploaded, tested, and shared. By combining the LottieFiles plugin and the LottieFiles platform, you'll be able to create stunning animations that are easy to integrate in any device. You'll also see how to use the Bodymovin plugin in After Effects to export your animation to a JSON file.The book starts by giving you an overview of Lottie and LottieFiles. As you keep reading, you'll understand the entire Lottie ecosystem and get hands-on with classic 2D animation principles. You'll also get a step-by-step guided tour to ideate, sketch for storytelling, design an icon that will fulfill the needs and expectations of users based on UX, and finally animate it in Adobe After Effects. This will help you get familiar with the After Effects environment, work with vector shape layers, create and modify keyframes using layer properties, explore path and mask features, and adjust timing easily to create professional-looking animations.By the end of this animation book, you'll be able to create and export your own Lottie animations using After Effects and implement them in mobile apps using React Native. You'll also have an understanding of 2D animation best practices and principles that you can apply in your own projects.What You Will Learn:Get started with Lottie and integrate animations either by creating them from scratch or by downloading them through LottieFilesExplore the key principles of 2D classic animationUnderstand the basics to create your first animation using After EffectsExport your animations into Lottie JSON files through BodymovinIntegrate your very first Lottie icon animation inside your React Native appControl your animation within the app through React APIs, while exploring best practices and common pitfallsWho this book is for:This book is for developers and engineers who are already familiar with React Native, as well as UX and UI designers who want to create their own animations and integrate them with their platforms through React Native. Basic knowledge of JavaScript programming is assumed. Beginner-level illustration skills are also preferred, although not necessary.

Become a professional iOS developer with the most in-depth and advanced guide to Swift 5.3, Xcode 12.4, ARKit 4, Core ML, and iOS 14's new featuresKey FeaturesExplore the world of iOS app development through practical examplesUnderstand core iOS programming concepts such as Core Data, networking, and the Combine frameworkExtend your iOS apps by adding augmented reality and machine learning capabilities, widgets, App Clips, Dark Mode, and animationsBook DescriptionMastering iOS 14 development isn't a straightforward task, but this book can help you do just that. With the help of Swift 5.3, you'll not only learn how to program for iOS 14 but also be able to write efficient, readable, and maintainable Swift code that reflects industry best practices.This updated fourth edition of the iOS 14 book will help you to build apps and get to grips with real-world app development flow. You'll find detailed background information and practical examples that will help you get hands-on with using iOS 14's new features. The book also contains examples that highlight the language changes in Swift 5.3. As you advance through the chapters, you'll see how to apply Dark Mode to your app, understand lists and tables, and use animations effectively. You'll then create your code using generics, protocols, and extensions and focus on using Core Data, before progressing to perform network calls and update your storage and UI with the help of sample projects. Toward the end, you'll make your apps smarter using machine learning, streamline the flow of your code with the Combine framework, and amaze users by using Vision framework and ARKit 4.0 features.By the end of this iOS development book, you'll be able to build apps that harness advanced techniques and make the best use of iOS 14's features.What Will You LearnBuild a professional iOS application using Xcode 12.4 and Swift 5.3Create impressive new widgets for your apps with iOS 14Extend the audience of your app by creating an App ClipImprove the flow of your code with the Combine frameworkEnhance your app by using Core LocationIntegrate Core Data to persist information in your appTrain and use machine learning models with Core MLCreate engaging augmented reality experiences with ARKit 4 and the Vision framework

Fueled by falling display hardware costs and rising demand, digital signage and pervasive displays are becoming ever more ubiquitous. Such systems have traditionally been used for advertising and information dissemination, with digital signage commonplace in shopping malls, airports and public spaces. While advertising and broadcasting announcements remain important applications, developments in sensing and interaction technologies are enabling entirely new classes of display applications that tailor content to the situation and audience of the display. As a result, signage systems are beginning to transition from simple broadcast systems to rich platforms for communication and interaction. In this lecture, we provide an introduction to this emerging field for researchers and practitioners interested in creating state-of-the-art pervasive display systems. We begin by describing the history of pervasive display research, providing illustrations of key systems, from pioneering work on supporting collaboration to contemporary systems designed for personalized information delivery. We then consider what the near future might hold for display networks -- describing a series of compelling applications that are being postulated for future display networks. Creating such systems raises a wide range of challenges and requires designers to make a series of important trade-offs. We dedicate four chapters to key aspects of pervasive display design: audience engagement, display interaction, system software, and system evaluation. These chapters provide an overview of current thinking in each area. Finally, we present a series of case studies of display systems and our concluding remarks.

It is easy to imagine that a future populated with an ever-increasing number of mobile and pervasive devices that record our minute goings and doings will significantly expand the amount of information that will be collected, stored, processed, and shared about us by both corporations and governments. The vast majority of this data is likely to benefit us greatly—making our lives more convenient, efficient, and safer through custom-tailored and context-aware services that anticipate what we need, where we need it, and when we need it. But beneath all this convenience, efficiency, and safety lurks the risk of losing control and awareness of what is known about us in the many different contexts of our lives. Eventually, we may find ourselves in a situation where something we said or did will be misinterpreted and held against us, even if the activities were perfectly innocuous at the time. Even more concerning, privacy implications rarely manifest as an explicit, tangible harm. Instead, most privacy harms manifest as an absence of opportunity, which may go unnoticed even though it may substantially impact our lives.In this Synthesis Lecture, we dissect and discuss the privacy implications of mobile and pervasive computing technology. For this purpose, we not only look at how mobile and pervasive computing technology affects our expectations of—and ability to enjoy—privacy, but also look at what constitutes "e;"e;privacy"e;"e; in the first place, and why we should care about maintaining it. We describe key characteristics of mobile and pervasive computing technology and how those characteristics lead to privacy implications. We discuss seven approaches that can help support end-user privacy in the design of mobile and pervasive computing technologies, and set forward six challenges that will need to be addressed by future research.The prime target audience of this lecture are researchers and practitioners working in mobile and pervasive computing who want to better understand and account for the nuanced privacy implications of the technologies they are creating. Those new to either mobile and pervasive computing or privacy may also benefit from reading this book to gain an overview and deeper understanding of this highly interdisciplinary and dynamic field.

Notifications provide a unique mechanism for increasing the effectiveness of real-time information delivery systems. However, notifications that demand users' attention at inopportune moments are more likely to have adverse effects and might become a cause of potential disruption rather than proving beneficial to users.In order to address these challenges a variety of intelligent notification mechanisms based on monitoring and learning users' behavior have been proposed. The goal of such mechanisms is maximizing users' receptivity to the delivered information by automatically inferring the right time and the right context for sending a certain type of information. This book presents an overview of the current state of the art in the area of intelligent notification mechanisms that rely on the awareness of users' context and preferences. We first present a survey of studies focusing on understanding and modeling users' interruptibility and receptivity to notifications from desktops and mobile devices. Then, we discuss the existing challenges and opportunities in developing mechanisms for intelligent notification systems in a variety of application scenarios.