Android. Aplikacje wielowątkowe. Techniki przetwarzania

Anders Göransson

Wykorzystaj w pełni potencjał wątków! Jeżeli chcesz tworzyć aplikacje dostarczające użytkownikom doskonałych wrażeń, jeżeli chcesz wykonywać skomplikowane zadania szybciej lub po prostu musisz jednocześnie wykonywać różne działania — naucz się korzystać z wątków. Tworzenie programów wielowątkowych jest trudne, ale opanowanie tej sztuki pozwoli Ci osiągnąć wymierne korzyści! Ta książka w całości poświęcona jest korzystaniu z wątków na platformie Android. Dzięki niej poznasz przeróżne sposoby asynchronicznego przetwarzania oraz ich zalety i wady. Jednak na samym początku zapoznasz się z podstawowymi informacjami dotyczącymi wielowątkowości w języku Java. Dowiesz się, w jaki sposób wątki komunikują się ze sobą i synchronizują dostęp do zasobów oraz jak nimi zarządzać. Kolejne rozdziały zawierają sporą dawkę wiedzy na temat różnych technik asynchronicznych. Zapoznanie się z ich treścią ułatwi Ci wybór techniki, która spełni Twoje wymagania, gdy sam zabierzesz się za tworzenie aplikacji wielowątkowej. Książka ta jest obowiązkową lekturą dla programistów chcących w pełni wykorzystać możliwości platformy Android. Podstawy wielowątkowości w Javie i systemie Android. Komunikacja wątków w obrębie procesu i pomiędzy procesami. Zastosowanie strategii redukowania ryzyka powstawania wycieków pamięci. Zarządzanie cyklem życia wątku podstawowego. Sekwencyjne uruchamianie zadań w wątku tła za pomocą klasy HandlerThread. Używanie frameworku wykonawcy Javy do kontrolowania i anulowania wątków. Obsługa wykonywania zadań w tle za pomocą klas AsyncTask oraz IntentService. Uzyskiwanie dostępu do dostawców treści za pomocą klasy AsyncQueryHandler. Używanie ładowarek do aktualizowania interfejsu użytkownika nowymi danymi. Przewodnik po świecie wątków platformy Android!

Android Application Development Cookbook. Over 100 recipes to help you solve the most common problems faced by Android Developers today - Second Edition

Rick Boyer, Kyle Mew

The Android OS has the largest installation base of any operating system in the world; there has never been a better time to learn Android development to write your own applications, or to make your own contributions to the open source community!This “cookbook” will make it easy for you to jump to a topic of interest and get what you need to implement the feature in your own application. If you are new to Android and learn best by “doing,” then this book will provide many topics of interest. Starting with the basics of Android development, we move on to more advanced concepts, and we’ll guide you through common tasks developers struggle to solve. The first few chapters cover the basics including Activities, Layouts, Widgets, and the Menu. From there, we cover fragments and data storage (including SQLite), device sensors, the camera, and GPS. Then we move on more advanced topics such as graphics and animation (including OpenGL), multi-threading with AsyncTask, and Internet functionality with Volley. We’ll also demonstrate Google Maps and Google Cloud Messaging (also known as Push Notifications) using the Google API Library.Finally, we’ll take a look at several online services designed especially for Android development. Take your application big-time with full Internet web services without having to become a server admin by leveraging the power of Backend as a Service (BaaS) providers.

Android Application Development with Maven. Learn how to use and configure Maven to support all phases of the development of an Android application

Patroklos Papapetrou, Jonathan LALOU

Android Application Programming with OpenCV. For Java developers OpenCV is a fantastic opportunity to benefit from the popularity of image related mobile apps on Android. This book teaches you all you need to know about computer vision with practical projects

Joseph Howse

Take a smartphone from your pocket, and within a few seconds, you can snap a photo, manipulate it, and share it with the world. You have just achieved mass production of image data. With a computer vision library such as OpenCV, you can analyze and transform copious amounts of image data in real time on a mobile device. The upshot to this is that you, as developers, can provide mobile users with many new kinds of images, constantly highlighting certain visual features that are of artistic or practical interest. Android is a convenient platform for such experiments because it uses a high-level language (Java), it provides standardized interfaces for sharing image data between applications, and it is mostly open source, so everyone can study its implementation.Android Application Programming with OpenCV is a practical, hands-on guide that covers the fundamental tasks of computer vision—capturing, filtering, and analyzing images-with step-by-step instructions for writing both an application and reusable library classes.Android Application Programming with OpenCV looks at OpenCV's Java bindings for Android and dispels mysteries such as which version of these bindings to use, how to integrate with standard Android functionality for layout, event handling, and data sharing, and how to integrate with OpenGL for rendering. By following the clear, concise, and modular examples provided in this book, you will develop an application that previews, captures, and shares photos with special effects based on color manipulation, edge detection, image tracking, and 3D rendering.Beneath the application layer, you will develop a small but extensible library that you can reuse in your future projects. This library will include filters for selectively modifying an image based on edge detection, 2D and 3D image trackers, and adapters to convert the Android system's camera specifications into OpenCV and OpenGL projection matrices. If you want a quick start in computer vision for Android, then this is the book for you.By the end of Android Application Programming with OpenCV, you will have developed a computer vision application that integrates OpenCV, Android SDK, and OpenGL.

Android Application Security Essentials. Security has been a bit of a hot topic with Android so this guide is a timely way to ensure your apps are safe. Includes everything from Android security architecture to safeguarding mobile payments

Pragati Rai

In today's techno-savvy world, more and more parts of our lives are going digital, and all this information is accessible anytime and anywhere using mobile devices. It is of the utmost importance that you understand and implement security in your apps that will reduce the likelihood of hazards that will wreck your users' experience.Android Application Security Essentials takes a deep look into Android security from kernel to the application level, with practical hands-on examples, illustrations, and everyday use cases. This book will show you how to overcome the challenge of getting the security of your applications right.Android Application Security Essentials will show you how to secure your Android applications and data. It will equip you with tricks and tips that will come in handy as you develop your applications.We will start by learning the overall security architecture of the Android stack. Securing components with permissions, defining security in a manifest file, cryptographic algorithms and protocols on the Android stack, secure storage, security focused testing, and protecting enterprise data on your device is then also discussed in detail. You will also learn how to be security-aware when integrating newer technologies like NFC and mobile payments into your Android applications.At the end of this book, you will understand Android security at the system level all the way to the nitty-gritty details of application security for securing your Android applications.

Android Design Patterns and Best Practice. Create reliable, robust, and efficient Android apps with industry-standard design patterns

Kyle Mew

Are you an Android developer with some experience under your belt? Are you wondering how the experts create efficient and good-looking apps? Then your wait will end with this book! We will teach you about different Android development patterns that will enable you to write clean code and make your app stand out from the crowd. The book starts by introducing the Android development environment and exploring the support libraries. You will gradually explore the different design and layout patterns and get to know the best practices of how to use them together. Then you’ll then develop an application that will help you grasp activities, services, and broadcasts and their roles in Android development. Moving on, you will add user-detecting classes and APIs such as gesture detection, touch screen listeners, and sensors to your app. You will also learn to adapt your app to run on tablets and other devices and platforms, including Android Wear, auto, and TV. Finally, you will see how to connect your app to social media and explore deployment patterns as well as the best publishing and monetizing practices.The book will start by introducing the Android development environment and exploring the support libraries. You will gradually explore the different Design and layout patterns and learn the best practices on how to use them together. You will then develop an application that will help you grasp Activities, Services and Broadcasts and their roles in Android development. Moving on, you will add user detecting classes and APIs such as at gesture detection, touch screen listeners and sensors to our app. You will also learn to adapt your app to run on tablets and other devices and platforms, including Android Wear, Auto, and TV. Finally, you will learn to connect your app to social media and explore deployment patterns and best publishing and monetizing practices.

Android Development with Kotlin. Enhance your skills for Android development using Kotlin

Igor Wojda, Marcin Moskala

Nowadays, improved application development does not just mean building better performing applications. It has become crucial to find improved ways of writing code. Kotlin is a language that helps developers build amazing Android applications easily and effectively. This book discusses Kotlin features in context of Android development. It demonstrates how common examples that are typical for Android development, can be simplified using Kotlin. It also shows all the benefits, improvements and new possibilities provided by this language.The book is divided in three modules that show the power of Kotlin and teach you how to use it properly. Each module present features in different levels of advancement. The first module covers Kotlin basics. This module will lay a firm foundation for the rest of the chapters so you are able to read and understand most of the Kotlin code. The next module dives deeper into the building blocks of Kotlin, such as functions, classes, and function types. You will learn how Kotlin brings many improvements to the table by improving common Java concepts and decreasing code verbosity. The last module presents features that are not present in Java. You will learn how certain tasks can be achieved in simpler ways thanks to Kotlin.Through the book, you will learn how to use Kotlin for Android development. You will get to know and understand most important Kotlin features, and how they can be used. You will be ready to start your own adventure with Android development with Kotlin.

Android Flash. Zaawansowane programowanie aplikacji mobilnych

Stephen Chin, Oswald Campesato, Dean Iverson, Paul Trani

Wejdź w świat tworzenia oprogramowania dla urządzeń mobilnych! Platforma Android z każdym dniem zdobywa tysiące kolejnych użytkowników. Andy Rubin - odpowiedzialny za nią w Google - pochwalił się aktywacją 700 tysięcy nowych urządzeń z tym systemem każdego dnia. Robi wrażenie? Pomyśl, jak wykorzystać ten rynek i stworzyć aplikację, która podbije serca użytkowników. Dzięki możliwości wykorzystania technologii Flash teraz jest to jeszcze łatwiejsze! "Android Flash. Zaawansowane programowanie aplikacji mobilnych" to kompletny przewodnik po budowaniu skomplikowanych, zajmujących aplikacji dla Androida. Dzięki tej książce nauczysz się programować smartfony Android oraz tablety z wykorzystaniem najpopularniejszych frameworków służących do tworzenia bogatych aplikacji internetowych (RIA) dla Androida - Flash i Flex. Gdy wraz z autorami przejrzysz już zestaw narzędzi programistycznych Flasha, dowiesz się, jak dodawać multimedia, animacje i efekty specjalne do aplikacji. Zrozumiesz, jak działa optymalizowanie dla różnorodnych wyświetlaczy oraz jak wykorzystać dane wejściowe pochodzące z aparatu, GPS, mikrofonu i akcelerometru. Poznasz metody tworzenia certyfikatów podpisywania kodu oraz uzyskiwania jak najlepszej wydajności aplikacji. Zapoznasz się z dużą ilością praktycznego, dobrze skomentowanego kodu i zbudujesz trzy kompletne projekty: program do rysowania, odtwarzacz muzyczny Flash oraz aplikację AIR przechowującą informacje o stanach witryn w bazie danych SQLite. Sprawdź możliwości technologii Flash dla platformy Android. Korzystaj z usług geolokalizacyjnych Sprawdź położenie telefonu za pomocą wbudowanych sensorów Wykorzystaj narzędzia przeznaczone dla technologii Flash Opublikuj aplikację w Android Market! Twórz atrakcyjne aplikacje mobilne za pomocą Flasha, Fleksa i Androida!