We iterate through all services and inform them what just happened so they can perform specific work. The idea is simple: The AppDelegate gets only one responsibility: informing all of its services what just happened: the app started, the app entered background, e.t.c. The AppDelegate keeps pointers to different service objects in an array called services: We can solve the problem by using the same idea behind the Strategy Pattern Splitting things up to smaller methods is not a good idea here as this class still keeps a lot of responsibilities spread across smaller methods. Things which generally should not be together are now gobbled together in one giant class called AppDelegate.Developers can't parallelise work because they all work on the same class.You break the Single Responsibility principle, because the AppDelegate now handles too many things, changes for more than one reason.If you keep all of them in the AppDelegate you get will suffer because: Setting up: crash reporting, analytics, feedback gathering, setting up a coredata stack, handling remote notifications, handling url schemes. How could it? The App delegate has tens of different responsibilities by default. Episodes 2-6 strongly recommended for fully understanding VIPER.īut VIPER doesn't and cannot solve the problem of large AppDelegate classes. VIPER in its turn is an interpretation of Uncle Bob's clean architecture presented in episode 7. It was a revelatory new architecture which split up nicely the responsibilities into business rules, data formatting, data presentation, data acquisition and made our iOS apps entirely testable. A simple and elegant architecture 25 January 2016Ī long time ago the entire iOS community was presented with VIPER. Is this a good alternative for AppDelete fast copy. AppCleaner is a free software that lets you completely remove applications, and will deliver a comprehensive list of the files that are associated with each.
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