Monday 20 July 2015

MVC pattern in Android?

MVC pattern in Android?

Is it possible to implement the Model-View-Controller pattern in Java for Android? Or is it already implemented through Activities? Or is there a better way to implement the MVC pattern for Android?
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22 
Your question is very good. But the answer marked as solution is not correct in my opinion. It might misguide several people. –  Saghar Jan 16 '14 at 15:33
1 
Check out my 2 posts starting here Android Architecture: MV? –  Dori Apr 3 at 17:32
   
Question is very good. –  Sreekanth Karumanaghat Jun 15 at 7:20

19 Answers

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In Android you don't have MVC, but you have the following:
  • You define your user interface in various XML files by resolution, hardware, etc.
  • You define your resources in various XML files by locale, etc.
  • You extend clases like ListActivityTabActivity and make use of the XML file by inflaters.
  • You can create as many classes as you wish for your business logic.
  • A lot of Utils have been already written for you - DatabaseUtils, Html.
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188 
if you're trying to imply that a static xml file is the view and an activity is a presenter/controller then you're missing the part of MVC/MVP pattern actually decouples the view and presenter. You cannot instantiate an activity without talking to your layout/view. Really what you want to do is use composition and embed the activity/layout into a view class and the have all the application/presentation logic decoupled out into their respective classes. While what you describe is MVC... it's a very bad, strongly coupled MVC. Which is poor to work with. Especially if you wish to unit test. –  JDPeckham Apr 14 '11 at 23:20 
35 
Android is terrible at MVC. Android's API philosophy is template/inheritance over composition; which makes it bad for testing too. That being said, there are ways to get MVC out of android, but it is not intuitive. –  Paul Nikonowicz Dec 13 '11 at 16:57
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I'm writing a Android Architecture series which teaches/demonstrates how to implement MVC (and other patterns) in Android. Check it out: therealjoshua.com/2011/11/android-architecture-part-1-intro – user123321 Dec 20 '11 at 3:02 
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This is what Google itself says about MVC in Android: No results found for +mvc site:developer.android.com. –  18446744073709551615 Apr 20 '12 at 9:29 
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For anyone who says that "Android is MVC" please try Backbone.js (yes, client side js) for a week, and then come back and say that "Android is MVC". You'll finally understand the question and why we keep asking :) –  Mark Peterson Feb 13 '14 at 17:12

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