By Jeff Friesen, Dave Smith
Android remains to be one of many prime cellular OS and improvement structures using today's cellular techniques and the apps environment. Android appears advanced, yet deals various equipped improvement kits to these getting into Android with differing programming language ability sets.
Android Recipes: A Problem-Solution method courses you step by step via quite a lot of invaluable subject matters utilizing whole and real-world operating code examples.
during this booklet, you'll start up with a recap of Android structure and app basics, after which get all the way down to enterprise and construct an app with Google’s Android SDK on the command line and Eclipse. subsequent, you'll the right way to accomplish useful initiatives concerning the person interface, communications with the cloud, machine undefined, information endurance, communications among functions, and interacting with Android itself. eventually, you'll easy methods to leverage a variety of libraries and Scripting Layer for Android (SL4A) to assist you practice projects extra speedy, tips on how to use the Android NDK to spice up app functionality, and the way to layout apps for functionality, responsiveness, seamlessness, and more.
rather than summary descriptions of advanced options, in Android Recipes, you'll locate reside code examples. in case you begin a brand new undertaking, you could ponder copying and pasting the code and configuration documents from this ebook, then enhancing them in your personal customization wishes. this may prevent loads of paintings over making a undertaking from scratch!
What you’ll learn
* realize Android structure and diverse Android-specific APIs
* tips to increase a unit conversion app within the context of command-line/Android SDK and Eclipse/Android SDK environments
* easy methods to accomplish numerous projects relating to the person interface and extra
* easy methods to use exterior libraries to save lots of effort and time
* tips on how to speedy boost an app utilizing the Scripting Layer for Android (SL4A) software
* find out how to improve app functionality by utilizing the Android NDK
* directions for designing filtered apps, performant apps, responsive apps, and seamless apps
Who this publication is for
novices to Android, in addition to extra entire Android builders.
desk of Contents
* Getting begun with Android
* consumer Interface Recipes
* Communications and Networking
* Interacting with gadget and Media
* Persisting facts
* Interacting with the procedure
* operating with Libraries
* Scripting Layer for Android
* Android NDK
* App layout directions
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Extra resources for Android Recipes: A Problem-Solution Approach
This file is synchronized to the Activity subclass previously specified via the --activity or -a option. bin is the output directory for the Apache Ant build script. properties is a customizable properties file for the build system. You can edit this file to override default build settings used by Apache Ant, and provide a pointer to your keystore and key alias so that the build tools can sign your app when built in release mode (discussed in Recipe 1–8). xml is the Apache Ant build script for this project.
7 or later for Windows so that you can build Android projects. NOTE: If a JDK is already installed on your development platform, take a moment to ensure that it meets the previously listed version requirement (5 or 6). 4, which is not supported for Android development. Also, Gnu Compiler for Java is not supported. tgz (Linux). exe. This tool automates must of the installation process. zip. After unarchiving this file, move the unarchived android-windows-sdk home directory to a convenient location in your filesystem; for example, you might move the unarchived C:\unzipped\android-sdk_r08-windows\android-sdk-windows home directory to the root directory on your C: drive, resulting in C:\android-sdk-windows.
TextArrayResId requires the ID of an array resource that stores strings (such as "Degrees Celsius to Degrees Fahrenheit"), which happen to identify different kinds of conversions. xml (described later in this recipe). textViewResId requires the ID of the layout resource used to create the spinner’s look. simple_spinner_item argument passed to this parameter is a predefined ID stored in the android package’s R class’s nested layout class. simple_spinner_item describes a spinner that looks something like a Java Swing combobox.