By Jeff Friesen, Dave Smith
Android is still one of many major cellular OS and improvement structures using today's cellular concepts and the apps environment. Android appears advanced, yet bargains various prepared improvement kits to these getting into Android with differing programming language ability sets.
Android Recipes: A Problem-Solution strategy courses you step by step via quite a lot of worthy subject matters utilizing entire and real-world operating code examples.
during this publication, you'll commence 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 way to accomplish useful initiatives touching on the consumer interface, communications with the cloud, gadget undefined, facts patience, communications among purposes, and interacting with Android itself. ultimately, you'll leverage a variety of libraries and Scripting Layer for Android (SL4A) to assist you practice projects extra fast, how one can 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 complicated techniques, in Android Recipes, you'll locate stay code examples. in case you begin a brand new undertaking, you could give some thought to copying and pasting the code and configuration records from this booklet, then enhancing them in your personal customization wishes. this may prevent loads of paintings over making a venture from scratch!
What you’ll learn
* become aware of Android structure and numerous Android-specific APIs
* how one can enhance a unit conversion app within the context of command-line/Android SDK and Eclipse/Android SDK environments
* find out how to accomplish a number of projects on the topic of the person interface and extra
* how you can use exterior libraries to save lots of effort and time
* tips on how to fast advance an app utilizing the Scripting Layer for Android (SL4A) software
* easy methods to strengthen app functionality through the use of the Android NDK
* guidance for designing filtered apps, performant apps, responsive apps, and seamless apps
Who this e-book is for
rookies to Android, in addition to extra comprehensive Android builders.
desk of Contents
* Getting all started with Android
* person Interface Recipes
* Communications and Networking
* Interacting with equipment and Media
* Persisting information
* Interacting with the process
* operating with Libraries
* Scripting Layer for Android
* Android NDK
* App layout directions
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Additional info for Android Recipes: A Problem-Solution Approach
Xml resource file to facilitate localization of the app to a different language, such as French or German. inputType identifies the kind of data that you want the user to enter. By default, any character can be entered. Because this is unacceptable when a number is required, "numberDecimal|numberSigned" is assigned to inputType. This string specifies that only decimal numbers can be entered. Furthermore, these numbers can be negative. maxLines restricts the number of lines of text that can be entered into a textfield.
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. NOTE: To complete installation, add the tools subdirectory to your PATH environment variable so that you can access the SDK’s command-line tools from anywhere in your filesystem.
For example, you can convert a specific number of degrees Celsius to its equivalent number of degrees Fahrenheit, a specific number of pounds to its equivalent number of kilograms, and so on. How It Works UC consists of a single activity (also named UC) that presents a user interface (revealed in Recipe 1–7) consisting of an input/output textfield for entering the number of units to convert and displaying the conversion result, a spinner for choosing a conversion, and buttons for clearing the textfield, performing the conversion, and closing the app.
Android Recipes: A Problem-Solution Approach by Jeff Friesen, Dave Smith