Download Android Recipes: A Problem-Solution Approach by Jeff Friesen, Dave Smith PDF

By Jeff Friesen, Dave Smith

Android remains to be one of many top cellular OS and improvement systems riding today's cellular options and the apps atmosphere. Android appears advanced, yet deals quite a few geared up improvement kits to these entering Android with differing programming language ability sets.

Android Recipes: A Problem-Solution procedure courses you step by step via quite a lot of valuable issues utilizing whole and real-world operating code examples.

during this ebook, you'll begin with a recap of Android structure and app basics, after which get right down to company and construct an app with Google’s Android SDK on the command line and Eclipse. subsequent, you'll tips on how to accomplish functional projects referring to the person interface, communications with the cloud, machine undefined, info endurance, communications among purposes, and interacting with Android itself. eventually, you'll methods to leverage numerous libraries and Scripting Layer for Android (SL4A) to assist you practice projects extra quick, easy methods 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 complicated ideas, in Android Recipes, you'll locate dwell code examples. in the event you commence a brand new venture, you could examine copying and pasting the code and configuration records from this booklet, then editing them in your personal customization wishes. this may prevent loads of paintings over making a undertaking from scratch!

What you’ll learn

* become aware of Android structure and diverse Android-specific APIs
* the best way to strengthen 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 relating to the consumer interface and extra
* tips on how to use exterior libraries to avoid wasting effort and time
* the best way to fast improve an app utilizing the Scripting Layer for Android (SL4A) software
* the way to develop app functionality by utilizing the Android NDK
* directions for designing filtered apps, performant apps, responsive apps, and seamless apps

Who this e-book is for
novices to Android, in addition to extra complete Android builders.

desk of Contents

* Getting begun with Android
* consumer Interface Recipes
* Communications and Networking
* Interacting with equipment and Media
* Persisting facts
* Interacting with the method
* operating with Libraries
* Scripting Layer for Android
* Android NDK
* App layout instructions

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Additional resources for Android Recipes: A Problem-Solution Approach

Example text

Html). You’ll want to locate documentation on these types quickly as you dig deeper into Android app development. Listing 1–9 next describes the UC class, which extends Activity. This class first declares position and multipliers fields:  position stores the zero-based index of the conversion selected via the spinner, and defaults to 0 (the first conversion displayed by the spinner). Storing the spinner’s position in this field simplifies choosing an appropriate conversion to perform. CHAPTER 1: Getting Started with Android  multipliers stores an array of multiplier values, with each entry corresponding to a spinner value.

All of the app’s work takes place in the overriding onCreate(Bundle) method: no other methods are required, which helps to keep this app simple. onCreate(Bundle) first invokes its same-named superclass method, a rule that must be followed by all overriding activity methods. main) to establish the app’s user interface. main identifies a resource, a piece of data required by an app’s code, and which you maintain independently of the code by storing it in a separate file. NOTE: Resources simplify app maintenance, make it easier to adapt a user interface to different screen sizes, and facilitate adapting an app to different languages.

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.

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