MMVMi: A Validation Model for MVC and MVVM Design Patterns in iOS Applications

摘要

Design patterns have gained popularity as they provide strategies for solving specific problems. This paper explores two common design patterns in iOS development field: Model View Controller (MVC) and Model View ViewModel (MVVM) design patterns. The paper investigates the problems with MVC design pattern. Then, it introduces a validation model that detects MVC problems, and helps programmers make the decision to switch between MVC and MVVM design pattern. The proposed validation model consists of two phases: phase one is to detect MVC problems, and phase two is to validate the relation between MVVM objects. The model was then applied to a Cloudy app as a case study. As a result, the model was able to detect MVC problems. The relation between MVVM objects was also validated. Further, this research provided some recommended solutions to satisfy the relations between MVVM objects in the project.