MBP - What does MBP stand for? The Free Dictionary

 

android mbp

The Android default templates encourages the creation of large activities or fragments. These components typically contain both business and UI logic. This makes testing and therefore the maintenance of Android applications harder. Several patterns are popular within the Android . Dec 06,  · Model–view–presenter (MVP) is a derivation of the model–view–controller (MVC) architectural pattern which mostly used for building user interfaces. In MVP, the presenter assumes the Author: Bipin Pandey. 在 Android中很重要的一点就是对UI的操作基本上需要异步进行也就是在MainThread中才能操作UI,所以对View与Model的切断分离是 合理的。 此外Presenter与View、Model的交互使用接口定义交互操作可以进一步达到松耦合也可以通过接口更加方便地进行单元测试。.


Android Architecture with MVP or MVVM - Tutorial


We have a video player application that we developed as a weekend hobby project which does a few things like slow motion, reverse and zoom. Needed to make the video listing part of my application crash free, easy to maintain and extend, android mbp.

I have never professionally written code in Android, so all the explanations below would be from a beginners perspective. This article is implementation of the ideas I learned from the below article, android mbp. Please go through the below article to better understand the concepts. Like most architectural patterns MVP is open to a lot of variety and experimentation and its implementation can be ambiguous.

So you can modify your implementation according to your needs as long as your implementation meets the android mbp objectives. Now, android mbp, the android activity seems to give the functionality of view since we do things like setContentView in OnCreate. Activity at the same time maintains the android lifecycle events like onCreate onResume etc which would be the business logic i.

Another simple example to show how they are entangled. Most of you would agree that debugging an Activity code with several lines of code registering UI components and at the same time also having a few lines of business logic embedded here and there is a huge pain. This makes Activity a natural choice for keeping the responsibility for business logic. After all we want keep the view to be dumb module android mbp only has the functionality to load the UI elements.

For more detail on this topic, you can go through this article explaining why activities are not UI elements, android mbp. The complete code is available on github. Please check out android-video-listing-mvp. I will walk through the code of my app and try to explain how I checked the boxes for the objectives of MVP, android mbp.

Now, This part of the application was the most straight forward to implement, android mbp. We used ContentProvider provided by Android to get list of videos. As contentProvider is provided by android out of the box, so we needed nothing more than few lines of code to setup contentprovider and query it to get the list of videos.

You can refer to VideoListManagerImpl. LoaderCallbacks was used to get automatic events of videos list updating. If we latter plan to replace this with my SQLite Database as it does not return. The replacement can be done with minimum friction as the code is structured in MVP format. This Manager class follows the contract of VideoListManager.

Some android mbp argue that the Manager class belongs to the model, I favor Manager class as part of Presenter but do not completely disagree with those who think android mbp, as the long as the code is cleanly separated. Tomorrow replacing ContentProvider with sqLite will be fairly easy as long as the new manager class implements the above interface my contract and updates the presenter with list of videos in the format required by the interfacenothing needs to change anywhere else in my code.

We used a ViewMvp Interface that returns the root view to the presenter which can be further used for communications between presenter and view for the user interactions.

This ViewMvp interface described above is a very general interface and as the 4 concrete views in the demo application needed a little more functionality like returning the ListView etc, we defined them as sub-interface of the ViewMvp. Check out the implementation VideoListFragmentView to get a better understanding. Unlike other MVP articles you can find the code here done for a real world application handling complexities like giving animations during swipes, providing functionalities like searching sorting and handling the communication between fragments and activities.

This approach of making the view a dumb holder of UI without any logic embedded in it, implemented through an interface also helps us with. Adapters, Since we are using a ListView, we need to implement it using an Adapter. We use the well documented ViewHolder pattern that works well to display the list elements inside the ListView. Check the implementation of the adapter here. The presenter is the core of the application, it initializes the view and the model, also sets android mbp the communication framework for handling user interaction and model data changes.

The logic of searching, sorting, video share, delete, rename and what happens when a user chooses a video, all that business logic goes in this bucket. List of functionalities of the Presenter are. Presenter doing all that does not contain any view implementation details as well as the details of data storage mechanism in the model, android mbp.

The presenter depends only on the contract which we enforce using interfaces. Below is an example of how I initialize the view and model in the presenter onCreate method. As discussed above Activities and Fragments take up the role of Presenter. The role of presenter is further split to manage the model interaction through the manager android mbp. Refer android mbp the implementation of the Presenter from here, android mbp.

I recommend you to check my git repository for complete implementation details of android video listing in mvp. This has a simple, android mbp, clean, efficient and very easily extendable implementations of Video Listing Functionality in Android. Checkout our Video Player. Github android mbp. If you liked the article, do press the recommend button. Thanks for your time.

Sign in, android mbp. Get started. Archive About Submit your article, android mbp. Android MVP for Beginners. Nitin Agarwal Follow. Software Developer BlueStacks. AndroidPub Follow. See responses 6.

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MVP for Android: how to organize the presentation layer

 

android mbp

 

Oct 24,  · Android MVP Architecture: Sample App. This repository contains a detailed sample app that implements MVP architecture using Dagger2, GreenDao, RxJava, FastAndroidNetworking, PlaceHolderView and AndroidDebugDatabase. Architecture Blueprint. Project Structure. Read the below listed articles. They describe the MVP concepts and the Project. 在 Android中很重要的一点就是对UI的操作基本上需要异步进行也就是在MainThread中才能操作UI,所以对View与Model的切断分离是 合理的。 此外Presenter与View、Model的交互使用接口定义交互操作可以进一步达到松耦合也可以通过接口更加方便地进行单元测试。. Apr 18,  · Android MVP for Beginners. Android Activity And MVP. The android framework makes it really easy to start development of any idea that you have in mind, but this structure of code very soon becomes unmanageable with a lot of spaghetti code and classes with different functionalities all mixed into one activity/fragment traduiyre.gq: Nitin Agarwal.