Mvvm Android Example

I need to express this using MVVM / Binding. we also use in this project retrofit and Glide Library. Please add a description of what problem your code solves in less general terms. 4a of Android-Binding library as well. gradle file. One of the easier to understand articles about those three patterns in Android. Google released the Data Binding library in May 2015, and it is the hero that can save the interfacing between the XML layouts and the Java classes. The one we use in Shopify's Point of Sale (POS) for Android app is the Model-View-ViewModel (MVVM) pattern based on Google's App Architecture Guide which was announced last year at Google I/O 2017. From Beginner To Expert In Android Jetpack Architecture Components, MVVM, Dagger, Retrofit, Room, … All In One Course! Become a highly qualified Professional Level Android Developer by mastering most demanded Android skills of 2019!. 0 includes Compose Live Preview, Code Completion, and a full sample of a Compose app. New versions, new practices and tools emerge constantly. Now it's time to make a flexible architecture for Android using DataBinding! For example, we will. You can check the sample code on Github ; If you want to learn about MVVM, check this article; Data Binding, easy to learn and really powerful. Model View ViewModel MVVM Android Example Model View ViewModel (MVVM) is an architectural pattern applied in applications to separate user interface code from data and business logic. As always demo code will be on the my GitHub, here at almirvuk/Xamarin. In this example I’ll show how to open a URL using the Java HttpURLConnection class. In this part, after comparing MVVM to MVC and MVP, I write a sample android application in MVVM using RxJava with complete source code on GitHub. I'm going to show how this works through a very simple example. Forms applications, particularly when data-binding and MVVM are used. June 23, 2019 admin Kotlin No Comment on 3. MVVMExample. Example Hope that this tutorial was helpful for you in your process of development or learning Xamarin. MVVM is a design pattern for organizing GUI applications that has become popular on Android. Xamarin Forms is great for writing decent looking applications on all three major mobile platforms - iOS, Android and Windows Mobile. Questions: I currently do a lot of WPF development and have started creating some basic Android apps. While I've participated in lots of discussions online about MVVM, it occurred to me that beginners who are learning the pattern have very little to go on and a lot of conflicting resources to wade. If you haven't already, add Firebase to your Android project. Android BasicNavigation App implementation. NET , Design Patterns Tags: C# , WPF For those familiar with the MVVM (Model, View, View-Model) pattern in. You make a simple view model, you use it in the UI layer and you make a model layer with which the view model communicates. 0 release, material design came in to picture and allot of changes were made in various APIs. Model is a concept that defines the business logic. (C# for android). 9/16/2014 · An article presented by ShivPrasad Koirala which covers complete step by step tutorial on WPF MVVM Architecture like Leveraging PRISM, Simple 3 layer example and GLUE code problem, Adding actions, Decoupling actions and so on. We’ll create a functional reactive ViewModel using Darts Stream API. This library helps reduce boilerplate code in android applications: a useful implementation of Model-View-ViewModel pattern by leveraging the new Android Data Binding. In this tutorial, you will learn how to reduce code complexity and how to maintain a clean and reusable structure of your code by using MVVM pattern. This Android SQLite tutorial explains the following, How to create a new database with a table (Employee table) in your application. The main purpose of the toolkit is to accelerate the creation and development of MVVM applications in WPF, Silverlight, Windows Store, Windows Phone and Xamarin. Read our tutorial series - Architecture Component. Sample Data Binding implementation using the MVVM Light toolkit with Xamarin Android Framework Data binding links the business logic and UI, and provides a clean workflow. Here is an example of using the messaging aggregator feature of MVVM Light. Understanding MVVM on Android Tutorial 03 - Networking with Retrofit2 Android Architecture Now that we have defined our model, the next step is define our network calls. You can check the sample code on Github If you want to learn about MVVM, check this article; Data Binding, easy to learn and really powerful. The reason for this blog is that it seems most of the examples out there online either deprecated or just try to s Minimal Android MVVM Databinding Setup with Kotlin | Through the binary Through the binary. The MVVM_model class is our data model, and the MVVM_viewManager class is our viewModel (in my opinion, the term "viewModel" is somewhat confusing, so I've used "viewManager" instead). net A badly written code is a NIGHTMARE (when needed to maintain). Sample of MVVM with Android Data Binding Library. Requirement. The project follows a typical MVVM pattern where all the complexity of the View is deferred to a ViewModel. Building Android Apps with MVVM and Data Binding The Model-View-ViewModel (MVVM) pattern is for more than just Microsoft. The main purpose of this app is to show MVVM sample implementation using the new Google Architectural components LiveData and ViewModel. Two-Way Data Binding on Android: Observing Your View with XML (MVVM) pattern on Android. You will learn data binding, commanding, and navigations in Xamarin Forms. We are going to see how this architecture can be used to write decoupled, testable, and maintainable code. There are different types of buttons used in android such as CompoundButton, ToggleButton, RadioB. By John Papa; 10/04/2011; Want to see Model-View-ViewModel (MVVM) without all the "helpers"? Perhaps you thought I was kidding in my previous column, "Fundamental MVVM". People-MVVM - Android Sample to explain Model View View Model and DataBinding in android applications #opensource. The Udemy Android Architecture Components & MVVM Masterclass free download also includes 7 hours on-demand video, 7 articles, 13 downloadable resources, Full lifetime access, Access on mobile and TV, Assignments, Certificate of Completion and much more. And they give you the idea that you can do fancy things like this: android:visibility=" @{age < 13 ? View. In this article, I am going to discuss the implementation of MVVM pattern in Android (Java) with the help of Android-Binding framework. Programming Android applications doesn't stand still. activity_sample_mvvm); 复制代码. MVVM Android Sample with auto devops. View Layer is a combination of Activity/Fragment with XML and binding. 設計ってなんのためにするの?. Android Data Binding - Example. The high level features that MvvmCross provides you with are: MVVM architecture pattern. Android simple MVVM example. This article references a sample app to demonstrate the implementation of using an MVVM approach. Android by example : MVVM +Data Binding -> Model (Part 2) If you’re unfamiliar with the terms data binding or MVVM pattern, refer to part 1 for a quick refresher before continuing along this part. Two questions: First: I tried the provided MVVM sample, because it interest me the most currently. Introduction To Android Architecture Components. It typically stores th. In our previous tutorial, we created a basic travel app using Xamarin. There were many examples, but most of them were written with the PC version of Visual Studio (VS). With this pattern, Activities and Fragments become very lightweight. Android data binding is an Android Studio IDE built-in feature, and it’s compatible for all Android versions since API 7. Forms, Universal Windows Platform (UWP) and Windows Presentation Framework (WPF). And they give you the idea that you can do fancy things like this: android:visibility=" @{age < 13 ? View. Android BasicNavigation App implementation. Build a Modern Android app using MVVM, Dagger2, RxJava &more, Learn the latest Android technologies including Dagger2, MVVM, Kotlin, RxJava, Retrofit, Mockito and Glide. This is a demonstration of using Android architectural component ViewModel for a simple MVVM design pattern. Android Studio 4. Implementing MVVM via Data Binding is a very convenient way to build Android apps. During Google I/O, Google introduced architecture components which includes LiveData and ViewModel which facilitates developing Android app using MVVM pattern. In Android Studio, if you get errors when you paste code or during the build process, select Build >Clean Project. For example, for Android resources we created a IResourceProvider, that exposes methods like String getString(@StringRes final int id). This is Tutorial of Mvvm , first basic example how we can create Viewmodel. In short, the application displays a list of article items each containing a featured image of the article, its title, excerpt and two buttons navigating to hypothetical article comments and detail. MVVM is the best approach for Xamarin. Get rid of the development and maintenance cost for creating your app twice. In this tutorial, we will learn how to perform the MVVM approach in Xamarin. Note: This is known to be broken at the moment. In this example, we will Bind a WPF Listbox using ObservableCollection from WPF ViewModel. Using MVVM is highly recommended in Cross- Platform development. For example, for Android resources we created a IResourceProvider, that exposes methods like String getString(@StringRes final int id). The question is whether there is anything about Android that prevents developers from adopting these architectural patterns. mvvm-navigation-dagger - Android Navigation Component + Dagger DI based implementation (Optional) The mvvm-core module is a core module the other modules depend on. c and perform the obliged activity on that the selected object. Based on which, you can separate the flow that reaches to data source but your selection of which data source to be selected is triggered from your model. In this episode I cover a helper library that I have created, MVVM Helpers, and is used by thousands of develope. You will learn data binding, commanding, and navigations in Xamarin Forms. You find the view in your Activity, then set content on it. The MVVM_model class is our data model, and the MVVM_viewManager class is our viewModel (in my opinion, the term "viewModel" is somewhat confusing, so I've used "viewManager" instead). In this example lets see how to implement Data Binding in Android application. Let’s have a look at a simple example in which we will be using MVVM approach. MVVM stands for M odel V iew V iew M odel,. With this pattern, Activities and Fragments become very lightweight. In this example I’ll show how to open a URL using the Java HttpURLConnection class. In this example, we will Bind a WPF Listbox using ObservableCollection from WPF ViewModel. Android Studio 4. Using MVVM is highly recommended in Cross- Platform development. Building Android Apps with MVVM and Data Binding The Model-View-ViewModel (MVVM) pattern is for more than just Microsoft. Write SQLite Data Access Object (DAO) class for handling database create, read, update and delete (CRUD) operations on the table. It cannot directly talk to the View. Forms, Universal Windows Platform (UWP) and Windows Presentation Framework (WPF). The whole point of MVVM is to separate layers containing logic from the view layer. When binding a viewModel function to a property in xml certain function prefixes like get or is are dropped. Understanding The Difference Between MVC, MVP and MVVM Design Patterns there’s a framework called MVVMCross that allows you to integrate MVVM design pattern to Android and iOS platforms. You make a simple view model, you use it in the UI layer and you make a model layer with which the view model communicates. You'll learn about what they are and how they interact with each other. programming rest Ruby scala spring testing tips tools tutorial web windows windows. Pros for using ViewModel on Android. In my last post I wrote that i might have written my first tutorial about how to create an MVVM App with the following characteristics: MVVM architecture (Model - View - ViewModel) Dagger 2 DataBinding Retrofit RxJava This is a tutorial for Android programmers with experience in creating Android App, so I suppose there the…. I used the MVVM Light (Galasoft) framework. 7 MVVM-To-Do-App VS DeviceInfo-Sample. MVVM is a great paradigm that stands on its own and is only made better with a nice binding framework. Thanks to MVVM Light the complexity displaying collections in an Android app are greatly reduced. Each project is unique, and to make a custom architecture that will reflect and support its needs, you can take several architectures and use elements from them, for example combining MVC and MVVM. The initial. MVP is a design pattern and when it comes to Android development some of the examples available online are heavy on theories. 0 - built hand in hand with Compose for powerful, integrated tooling support. Properly reasoning about what a ViewModel is and is not, is crucial to correctly applying the MVVM pattern. These components typically contain both business and UI logic. You have to give your code a firm structure, prevent yourself from putting all the code inside an activity or fragment and make many smaller classes which have a single. Xamarin Evolve 2016: MVVM Made Simple with Xamarin. The project follows a typical MVVM pattern where all the complexity of the View is deferred to a ViewModel. DukeScript enables you to develop mobile Applications that run on iOS and Android. NET platform. Repository get data from local and remote server. This blog is all about implementing REST API in the Android app using Android retrofit mvvm dagger livedata rxjava, Android Architecture Components introduce by Google and Dagger 2 which make our code more clear and reusable and easy to modify if needed. Letting the Activity do the data handling isn’t a good idea. View Models At the core of every MVVM framework is the ViewModel - while this class is the most interesting aspect of the MVVM pattern, it is also the most misunderstood. Android Architecture Components official page Architecture Components: Improve Your App's Design — 5 minute Youtube video by Lyla from Google Room Persistence Library — Room provides an abstraction layer over SQLite to allow fluent database access while harnessing the full power of SQLite. Implementing MVVM on Android is a very popular topic with lots of information. He codes in Windows, WPF, Xamarin (iOS and Android), Unity, ASP. MVVM: Example application. Android Data Binding also allowed developers to streamline MVVM architecture easier. In this tutorial, you will learn how to reduce code complexity and how to maintain a clean and reusable structure of your code by using MVVM pattern. Model – View – ViewModel is an architectural pattern which will empower you to write manageable, maintainable, cleaner and testable code. There are many explanations, tutorials, blog posts on architectural patterns in applications, mostly MVVM, MVP and MVC, but most of them are too hard to digest for one who is not much familiar with the subject. Android simple MVVM example 1. Introduction To Android Architecture Components. The MVVM_model class is our data model, and the MVVM_viewManager class is our viewModel (in my opinion, the term "viewModel" is somewhat confusing, so I've used "viewManager" instead). In any case, it is always better to use it for your architecture that not using it at all. When the activity is re-created for a configuration change, the new activity has to re-fetch the list of users. Reviews Review Policy. The first step in this exercise is to create the new project. Some of the things it offers are: An MVVM framework including IOC (inversion of control) and a view factory. In this blog post tutorial I will do simple MVVM binding in Xamarin. Two-Way Data Binding on Android: Observing Your View with XML (MVVM) pattern on Android. Today we also released the first canary of Android Studio 4. Learn MVVM fundamentals by building this simple Twitter app. Note: This is known to be broken at the moment. To help with your understanding, I suggest you take a look at the repository for this sample app here. I wonder that there is no handling of the life cycle in case of an orientation change. These components typically contain both business and UI logic. Android BasicNavigation App implementation. The high level features that MvvmCross provides you with are: MVVM architecture pattern. First create an an im folder in res,then create an xml with name. Whether using WPF, ASP. VISIBLE} ". So let's explore the necessary steps to set up a project with data binding, a RecyclerView and MVVM—and write clean code in the process. This post was previously posted on the Noser Engineering Blog. The whole point of MVVM is to separate layers containing logic from the view layer. Every viewmodel can communicate with another viewmodel without any association between them. Introduction of model-view-viewmodel architecture & small android project which will be helpful for developers for understanding MVVM. Android MVVM Tutorial – Build an App using MVVM Design Pattern. MvvmCross is a cross-platform MVVM framework that enables developers to create powerful cross platform apps. \$\endgroup\$ - Mast Sep 26 '18 at 6:35. In our travel app, for simplicity, we use standard data types of Dictionary and Array to represent the data. Easier SQLite With Room. MVVM and Dialogs Category:. programming rest Ruby scala spring testing tips tools tutorial web windows windows. This example illustrates how to implement a MVVM pattern (see Model View ViewModel) in an application for RTF text editing. Following design guidelines definitely does help achieve this. Android development tutorials, programming examples on android fundamentals, material design, styles and themes, user interface, data storage, libraries, retrofit. But to implement these patterns is also a big problem for beginners. Android Service: onUnbind Method Okay this method in the Android bound service implementation is sort of special, as it can control the life-cycle of a service. Note: You’ll find all the code for this project in the following Github repo. The implementation of the IResourceProvider will contain a reference to the Context but, the ViewModel will only refer to an IResourceProvider injected. In Android, the MVP and MVVM patterns are very popular, they help having a good architecture in our projects. As much as I don't like theory, sometimes it's important to know it before jumping. MVVM takes a lot of work out of creating apps by auto You've created a Xamarin. I am sharing one of the issues which I faced to load image URL on image view with help of Picasso. 設計ってなんのためにするの?. Creating the ViewModel Example Project. Just google "MVVM :Xamarin" and you will get a lot of good tutorials and lessons. programming rest Ruby scala spring testing tips tools tutorial web windows windows. Here is a quick sample with two pages and navigation. In this episode I cover a helper library that I have created, MVVM Helpers, and is used by thousands of develope. It supports Xamarin. An example of a complete architecture could be Clean Architecture, though there are many other options. April 25, 2014 how to do Mvvm on Android. Another option is instead of binding the view into the interface fields, we bind the elements of the view into the properties of the view model - this is MVVM. A badly written code is a NIGHTMARE (when needed to maintain). In this video, you'll learn about the need for architecture patterns like MVVM and define the layers of an MVVM app. Read our tutorial series - Architecture Component. TicTacToe-MVVM - Sample android application used to learn the Model View View Model pattern and DataBinding in Android. Master RxJava , Dagger with MVVM for Android Development 3. See how to use the Android Architecture. Android design and developer advocate Nick Butcher has spoken at countless mobile conferences and events on behalf of Google and the Android community. It might expose as actions the ability to bid, buy, or contact the seller. To enable the usage of data binding in your Android application, add the following snippet to the app/build. Another option is instead of binding the view into the interface fields, we bind the elements of the view into the properties of the view model - this is MVVM. You'll also learn about how MVVM relates to other patterns such as MVC and MVP. More than 1 year has passed since last update. While I've participated in lots of discussions online about MVVM, it occurred to me that beginners who are learning the pattern have very little to go on and a lot of conflicting resources to wade. Repository get data from local and remote server. Like in MVP, DataManager holds a reference to the RestApi (like Retrofit), database (SQLite), etc. This isn't just an Android MVVM tutorial. The best practices approach for organizing Android applications into logical components has evolved over the last few years. For any developer there is nothing better than having a clean, structured code. People-MVVM - Android Sample to explain Model View View Model and DataBinding in android applications #opensource. Android Studio 4. If you are familiar with MVVM, you can skip this section completely. Fortunately, there is an easy solution to move navigation logic from the Views to the ViewModels using MVVM Light. MVVM Light is extremely popular to build client applications in XAML. iOS, Xamarin. DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Learn android app development step by step and download source code for example app. available to simplify MVVM implementations. The main purpose of the toolkit is to accelerate the creation and development of MVVM applications in WPF, Silverlight, Windows Store, Windows Phone and Xamarin. An Android application built using Clean + MVVM architecture. MVVM example. Note: This is Part 1 of a three part series. The MVVM_model class is our data model, and the MVVM_viewManager class is our viewModel (in my opinion, the term "viewModel" is somewhat confusing, so I've used "viewManager" instead). This article is an attempt by me to explain through a simple example the MVVM pattern along with Data binding. Just google "MVVM :Xamarin" and you will get a lot of good tutorials and lessons. Implementing MVVM on Android is a very popular topic with lots of information. Simple as that. This lowers the barrier of entry significantly for. On this blog I’ve shown a variety of ways to use Java to open a URL connection, and then read data from that connection, including my How to open and read from a URL with the Java URL and URLConnection classes tutorial. Talk about MVVM given at STRV Android Meetup in Nov/2016. MVVM stands for Model, View, ViewModel. Model View ViewModel MVVM Android Example. Using MVVM is highly recommended in Cross- Platform development. Forms application with XAML, now it's time to add some functionality to it using the Model-View-ViewModel (MVVM) pattern. MVVM architecture with the data binding library December 15, 2016. There are a lot of MVVM plugins or libraries like FreshMVVM, MVVMCross, Prism, etc. Model-View-ViewModel in Android. android { dataBinding{ enabled true} } 复制代码. RxJava Master Class with MVVM for Android Development Course learn Android Reactive programming using RxJava, RxAndroid and Kotlin with Retrofit and Android Architecture components What you’ll learn. Building Android Apps with MVVM and Data Binding The Model-View-ViewModel (MVVM) pattern is for more than just Microsoft. Tue 09/10: Implicit and explicit intents. MVVM Architecture on Android. Forms and Prism. LiveData - Lifecycle aware Observable data holder class. Android data binding is an Android Studio IDE built-in feature, and it's compatible for all Android versions since API 7. Dependency Injection With Dagger 2. Grid — Handle millions of records and provides built-in. The Image above represents a quick and dirty way of understanding MVVM architectural pattern in Android. You're probably already tired of using findViewById, or maybe Kotlin Android Extensions worked for you for some time, but now you're finding some edgy cases where you are missing some things. A Model-View-ViewModel library for Android apps. (C# for android). Android ViewModel architecture is an efficient way to keep the data separate from the View Logic. I describe my approach using Data Binding Library from Google. This article discusses how can these components serve an android app that follows MVVM. We are explaining how dagger2 provides solution to tight coupling problem. An example for who are all going to start learning Kotlin programming language to develop Android application. Model-View-Presenter (MVP) architecture is widely used in today's Android apps to separate the view from the presentation logic and the model by introducing a presenter. Following design guidelines definitely does help achieve this. April 25, 2014 how to do Mvvm on Android. NET development, one conundrum that you've probably pondered, or at least read about, is what to do about showing a dialog. android documentation: MVVM (Architecture) Syntax quirks with DataBinding. A basic sample android application to understand MVVM in a very simple way. Forms is a layer built on top of Xamarin that allows developers to create apps for Android, iOS, and Windows Phone using a single codebase. MVVM stands for Model, View, ViewModel. You can directly bind two WPF elements together, but the common use of databinding is to bind some kind of data to the view. MVVM is a design pattern for organizing GUI applications that has become popular on Android. When binding a viewModel function to a property in xml certain function prefixes like get or is are dropped. More information is available at MVVM. For anyone that is just starting out with Forms, navigation can be very frustrating. See Understanding migrations with Room. You’re probably already tired of using findViewById, or maybe Kotlin Android Extensions worked for you for some time, but now you’re finding some edgy cases where you are missing some things. See how to use the Android Architecture. But to implement these patterns is also a big problem for beginners. MVVM Survival Guide for Enterprise Architectures in Silverlight and WPF will get you up to speed and ready to take advantage of this powerful new presentation platform. MVP in Android is widely used design pattern as it is more testable and readable. Activities and their lifecycle. The Android default templates encourages the creation of large activities or fragments. The model in this application is composed of 3 classes:. Learn android app development step by step and download source code for example app. In this article, I am going to discuss the implementation of MVVM pattern in Android (Java) with the help of Android-Binding framework. LiveData - Lifecycle aware Observable data holder class. With kt-mvvm you write your application once and deploy it to desktop, Android, iOS and browser with the help of portable presenters. AppRTCMobile is an Android application using WebRTC Native APIs via JNI (JNI wrapper is documented here). A very simple and easy to follow tutorial about Android ViewModel. Before we look at any code, we should get a basic understanding of MVVM (Model-View-ViewModel). In this tutorial you are going to learn all you need to know to have an idea about what MVVM actually is. Include this at the top of the app gradle file for kotlin compiler. But since Android’s 5. In this sixth installment of developing Android apps with Kotlin, we explore architectural patterns, particularly MVVM and how it works. Tue 09/10: Implicit and explicit intents. Forms using Fresh MVVM. Let's Get Started. Write SQLite Data Access Object (DAO) class for handling database create, read, update and delete (CRUD) operations on the table. This article is an attempt by me to explain through a simple example the MVVM pattern along with Data binding. Two questions: First: I tried the provided MVVM sample, because it interest me the most currently. We first need to add the MVVM Light package to each project in our solution (PCL, Android, iOS, and any flavor of Windows that you are supporting). In this article, we are discussing MVVM design pattern in Android and how we can solve existing problems with MVVM design pattern. What is MVVM First Application? In this chapter, we will learn how to use MVVM patterns for simple input screen and the WPF application that you could already be used to. April 25, 2014 how to do Mvvm on Android. Understanding MVVM on Android Tutorial 01 - MVC vs MVP vs MVVM Android Architecture As an android developer, you may have been asked by an employer/client to implement an architecture pattern when developing your app. Xamarin Evolve 2016: MVVM Made Simple with Xamarin. In my previous blog, I have showed you some main classes in MVVM Light Tookit. To put it to the test, let’s see if I can take all of that code (apart from the WPF window) and use it in a Xamarin Android application… Creating an Android ReactiveUI project in Xamarin. There aren't many ways to approach MVVM and it is not such a complicated pattern. Example Hope that this tutorial was helpful for you in your process of development or learning Xamarin. gradle file. Basic Xaml/VM binding 3. Let’s check how it works on the example below to be more aware of the advantages that go with data binding. It is only there to be opposed by the VM, ViewModel, which is what matters for MVVM, and for this article. Approaching MVVM on Android. Navigation Architecture Component is released as a part of JetPack and androidx package. android and xamrin. 2- Android MVVM with Dagger2, Retrofit, RxAndroid. In this blog, I will show a simple MVVM Light Toolkit example. Something showcasing the following would be awesome: 1. MVVM is also supported and encouraged by Google itself. More information is available at MVVM. Type “adb install [options] package-name” and you can. Conclusion & Recommendations MVVM is a suitable architectural pattern for business apps. Forms and Prism. In this chapter, we will learn how to use MVVM patterns for simple input screen and the WPF application that you may already be used to. This article is dedicated for beginners who would like to know more about Model-View-ViewModel (MVVM) design pattern and why MVVM has to be used. I have found some issues by using it with Xamarin. Today we also released the first canary of Android Studio 4. Idea of article was to give a complete example (from start to finish) of master and detail screens using MVVM pattern which could be used as a starting point for some. Use MVVM only when you need it. Especially for the phone. For example, your app may include a list of users in one of its activities. For example, you can implement MVVM in Android using at least three different approaches: Completely manual. If you are familiar with MVVM, you can skip this section completely. Data is fetched from MS SQL Database table : tblCountries To see How you can fetch data from MS SQL Database and bind it to WPF Listbox (Basic, not MVVM), please see this post. Following design guidelines definitely does help achieve this.