Loosely Coupled: How Android Components are Stitched Together

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Loosely Coupled Corey Leigh Latislaw CoreyLatislaw.com

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http://www.digitaltrends.com/mobile/android-way-cheaper-than-ios/ $276 $650 Android iPhone Average Price

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2013 2014 2018 ... Source: http://www.idc.com/getdoc.jsp?containerId=prUS24857114 Global Shipments 1.8 Billion 1.2 Billion 1 Billion

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5% 80% 15% Source: http://www.idc.com/getdoc.jsp?containerId=prUS24857114 Android iOS Market Share

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Source: http://www.idc.com/getdoc.jsp?containerId=prUS24857114 "Shipments will more than double between now and 2018 within key emerging markets, including India, Indonesia, and Russia. In addition, China will account for nearly a third of all smartphone shipments in 2018."

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Source: google.com

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Android Architecture

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Intents

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Manifest “Android applications consist of loosely coupled components, bound by the application manifest that describes each component and how they interact. The manifest is also used to specify the application's metadata, its hardware and platform requirements, external libraries, and required permissions.” Meier, Reto (2012). Professional Android 4 Application Development (Kindle 1533-1535). John Wiley and Sons. Kindle Edition.

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Demo

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Activity

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Demo

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Fragments

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Demo

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Views

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http://developer.android.com/design/building-blocks/index.html

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Demo

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Resource System

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Resources Using layout resources decouples your presentation layer from the application logic, providing the flexibility to change the presentation without changing code. This makes it possible to specify different layouts optimized for different hardware conﬁgurations, even changing them at run time based on hardware changes (such as screen orientation changes). Meier, Reto (2012). Professional Android 4 Application Development (Loc.2816-2818). John Wiley and Sons. Kindle Edition.

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