AuthorKeyur Patel is a Manager of Siya Infotech Solutions, a leading iPhone development and Android development company. He has more than 7 years’ experience in mobile app development using all kind of app development techniques and tools. ArchivesCategories |
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There are four different iOS architectural patterns and all of them have and the differences between them are explained. All these iOS architecture layers MVC, MVP, MVVM, and VIPER that might be helpful while developing the appropriate iOS application architecture. The Model-View-Controller Pattern: MVC is the fundamental pattern that has proven itself as a useful tool in multiple technologies, contributed to their development, and is generally a helpful assistant for developers. If you are looking for the ask architects what the best way to realize this pattern, most likely to get different versions and solutions. The great part of these A significant feature of all the patterns is the detachment of UI from the coding logic, which designers to do without need to consider the code. MVC pattern is capable of separating UI elements from the domain logic and from the data. Therefore, MVC in its original view consists of three categories that constitute its name. The breakdown, offers better understanding the entities, reuse them, and test them separately. By dividing the entities into various components, it is easy to define their contribution to a good architecture, which has the features of balanced duty distribution and inexpensive maintenance. MVP: With Bindings and Hooters: There is the other flavor of the MVP , Supervising Controller MVP. This includes direct binding of the View and the Model while the Presenter still handles actions from the View and it is also capable of changing the View. Supervising Presenter variant of the MVP: Vague responsibility, separation is bad, as well as tight coupling of the View and the Model. That is very much similar to how things work in Cocoa desktop development. MVVM:
What is the View Model in the iOS reality? It is generally UIKit independent representation of your View and its state. The View Model invokes changes in the Model and updates itself with the updated Model, and since we have a binding between the View and the View Model, the first is updated accordingly. The last nominee is very interesting as it does not belong to the MV category. iOS Patterns VIPER: VIPER takes another step towards that separation and offers five layers instead of the usual three. Interactor has domain logic that is connected to the Entities, for example, the creation of a new entity which retrieving from the server. For these it’s better to user services and Managers that are treated more like external dependencies, not parts of the VIPER module. Presenter contains certain important logic attached to the UI and calls out for methods on the Interactor. Entities are nothing but a simple data objects which are not related to the data access layer which is the Interactor responsibility. Router manages transitions between the VIPER modules. VIPER module can use for app’s screen or for the entire user story. For example, authentication process can take one screen or more than consecutive screens. However, it is up to iOS developer to figure out the optimal size of your module. These are the core separation of duties differences between VIPER and MV(X)-like patterns: 1. Model-based logic shifts to the Interactor level. 2. Entities are data structures that stay idle. 3. Presenter does not alter the data, but has Controller/Presenter/ViewModel UI representation duties migrated into it. VIPER is the first template to tackle the navigation problem and it is using Router for that purpose. Interactor: It contains business logic related to the data or networking, like creating new instances of entities from the server. For those purposes, you will see use some Services and Managers which are not considered as a part of VIPER module but instead it is an external dependency. Presenter: Contains the UI related business logic, which invokes methods on the Interactor. Entities: Plain data objects, not the data access layer, because that is a responsibility of the Interactor. Router: Responsible for the segues between the VIPER modules. VIPER module can be a one screen or the whole user story of the application think of authentication, which can either only for one screen or several related ones. Moreover, VIPER module can be your app’s screen or the entire user story. For example, authentication process can take one screen or several consecutive screens. It’s up important for you to decide the optimal size of your module. These are the core separation of duties differences between VIPER and MV(X)-like patterns: 1. Model-based logic shifts to the Interactor level. 2. Entities are data structures that stay idle 3. Presenter does not alter the data, but has Controller/Presenter/ViewModel UI representation duties migrated into it. Viper is able to tackle the navigation problem and it utilizes Router. Conclusion: Here, I went through several architectural patterns, and try to give certain answers to what bothered you, but I have no doubt that you realized that there is no specific rule for selecting an architecture pattern is a matter of weighting tradeoffs for that specific project.
Therefore, it is naturally possible to have a mix of architectures in the same app. For example: you’ve started with MVC, then you realized that one screen became too hard to with the MVC and switched to the MVVM, but only for this particular screen. There is no need to refactor other screens for which the MVC does work fine, because both of architectures are very compatible.To develop apps using iOS architecture you should hire iPhone app developers who have the capacity to develop an app using various kinds of above discussed methods.
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The contribution of mobile applications in smartphones is surely one of the biggest high-tech move and many people called it trans-tech. iPhone apps able to bring more personal computing experience. Today iOS applications are used in many major operational fields. A few years ago, people were drenched into traditional methods to book a taxi, banking operations. But, things become easier and efficient as soon as iPhone applications started emerging. Thus, it has created a huge demand for iOS Application Development Companies. Below are some most important criteria’s for developing iOS app which help new iPhone app developers to take through the whole iOS app development process. 1. Strength: iOS is most reliable app development platform. Moreover, it involves huge scope and tremendous opportunity for beginners to flourish their career. Swift and Objective-C are two widely used application development languages for iOS that’s why developers need to be perfect in technical terms of these two languages. Both languages include complex syntax, API, and methods. Thus, developers should have skill to deal with Swift and Objective-C as it needs lots of hard work and experience to develop effective iOS app. 2. Rough Idea of Application: It is always very good for the developers to have clear idea and written blueprint of application which they are going to create. For example, drawing the layout of application and its features speed up the entire development process. It is more beneficial when an entire team is working on iOS application development. As every development team member, can come up with creative ideas. This detailed planning surely makes iOS app development procedure easier and faster. Pre-development documentation helps developers to make clear workflow of application development in right direction. 3. Application Design: Application design acts as an interaction medium to access the application functionality. Responsive app design adds freshness and uniqueness to the applications. Developers should keep UI design simple and original instead stretch it to excessive creativity. Also, the creation of screen thumbnails is great thing to do to determine how each screen will appear when users go through the application. Developers can also opt for other online tools to provide amazing UI designing components. 4. Cocoa Framework: Development tool plays a vital part in the creation of an application. Apple allows development using frameworks which allow developers to learn iOS development without any kind of difficulty. The rich collection of commands helps iOS developers to make the application more professional. For example, Cocoa touch. This framework offers APIs and features to develop applications for Mac OS and OS X. Moreover, using this allows developers to optimize application source code as even complex syntax can be written in one line. 5. Xcode: iOS applications are developed with iOS SDK along with Xcode IDE. Xcode is not just editor but also static support analysis tool for the purpose of iOS app development. This is excellent tool to detect bugs during the compilation of application source code. The auto-complete feature improves the speed of debugging. It is generally easy to do all development using Xcode. 6. Interface Builder: Interface builder is an application which allows developers to build interface visually. Developers can simply drag-and-drop built-in components to application’s interface. For example, button, labels, scroll bars, sliders, lists etc. iPhone app developers should use interface builder to link targets and actions performed on that applications. Conclusion: There are thousands of iOS apps get launched in App Store daily. To develop brand new iOS applications, beginners need to have strong app monetization and marketing plan to manage success out of it. The ideas and strategies of iPhone Developers should be creative to gain success and high profits in the market. ___________________________________ |