By Paul Ferrill
Seasoned Android Python with SL4A is for programmers and hobbyists who are looking to write apps for Android units with no need to profit Java first. Paul Ferrill leads you from fitting the Scripting Layer for Android (SL4A) to writing small scripts, to extra complex and fascinating initiatives, and at last to importing and packaging your courses to an Android gadget. Android runs scripts in lots of scripting languages, yet Python, Lua, and Beanshell are fairly renowned. such a lot programmers recognize multiple programming language, so they have the simplest instrument for no matter what job they need to complete. seasoned Android Python with SL4A explores the area of Android scripting through introducing you to crucial open-source programming languages which are on hand on Android-based undefined. seasoned Android Python with SL4A starts off via exploring the Android software improvement kit and then exhibits you ways to establish an Eclipse-based Android improvement atmosphere. then you strategy the area of Android programming by utilizing Beanshell, which runs at the Dalvik, and studying tips to write small courses to manage an Android machine. subsequent, observe how Lua, a light-weight language ideally suited for scripting on smaller units, can paintings with Android. Lua can be utilized for small yet very important initiatives, like SMS encryption and synchronizing pictures with flickr. final, yet in no way least, you will find the realm of Python scripting for SL4A, and the ability contained in the complete variety of Python modules that may mix with the Android SDK. you are going to learn how to write small location-aware apps to get you all started, yet by means of the top of this ebook, you can find your self writing totally GUI-fied functions working at the Android machine! professional Android Python with SL4A is rounded out with a bankruptcy on dispensing and packaging scripts, a ability that you will locate very invaluable as you succeed in out to a much wider viewers along with your courses. What you’ll examine comprehend the SL4A discover the Android software improvement equipment Write scripts to manage an Android mobile Write and execute complete Python and purposes the best way to write easy apps utilizing Facades discover the entire Android improvement procedure, from improvement to packaging Who this ebook is for it is a ebook for starting and intermediate Android builders, and a publication for someone coding in Python, Lua or exploring Beanshell. desk of Contents creation Getting begun with Android Scripting Navigating the Android SDK constructing Androids Scripts with Eclipse Exploring the Android API history Scripting Python Utilities Python Dialog-Based GUIs Python for GUI with WebUI Packaging and dispensing Your Scripts
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This is a good point to define a few terms that you9ll see throughout the rest of this book. apk files. zip files containing everything needed by the application. zip, you can open it with any archive tool and examine the contents. Most Android devices come from the manufacturer with the systems files protected to prevent any inadvertent or malicious manipulation. The Android operating system (OS) is essentially Linux at the core and provides much of the same functionality you would find on any Linux desktop.
This same mechanism allows components to be replaced by the user. Underlying all applications is a set of services and systems, including: A rich and extensible set of Views that can be used to build an application, including lists, grids, text boxes, buttons, and even an embeddable web browser Content Providers that enable applications to access data from other applications (such as Contacts) or to share their own data A Resource Manager, providing access to non-code resources such as localized strings, graphics, and layout files A Notification Manager that enables all applications to display custom alerts in the status bar An Activity Manager that manages the lifecycle of applications and provides a common navigation backstack舡1 All Android applications are based on three core components: activities, services, and receivers.