MVVMKit

MVVMKit is a protocol oriented library that defines a possible way to adopt the MVVM in your iOS application. Optionally MVVMKit give you the possibility to take out the navigation responsibility from the view model and put it inside a Coordinator type.

In general using MVVMKit most of yout software types should belong to one of the following categories:

Model

The actual data manipulated of your applications. Model type can be NSManagedObject fetched from a Core Data database or Codable instances coming from a web server.

Responsibilities

• Maintain the state of the application

UIView

The user interface. On iOS views are typically subclasses of UIView.

Responsibilities

• Show the application content.
• Deliver the user interaction to the a UIViewController

UIViewController

A subclass of UIViewController

Responsibilities

• Deliver the user interaction to the a View Model
• Bind the View Model on the view

Note: on iOS we divide the View entity of the MVVM pattern in two entities: UIView and UIViewController.

View Model

The actual "brain" of a scene of your application.

Responsibilities:

• Manage the model
• Present the model in way it is immediately suitable for the view
• Notify the view controller when it should update the view (a.k.a. make a bind)

Coordinator

Is the entity responsible for the application navigation.

Responsibilities

• Decide which is (and how to show) the next view controller
• Instantiate view controllers and associated view models doing appropriate dependency injection

Grapical representation

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Installation

MVVMKit is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'MVVMKit'

Author

drakon-ag, alfogrillo@gmail.com

License

MVVMKit is available under the MIT license. See the LICENSE file for more info.