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You should use view controllers to handle all the functionality of your views and subviews and the user interaction.Use window controllers to implement the functionality associated to the application windows, like setting up the root view controller, resizing, repositioning, setting the title, etc.

The view should now look like this: It’s time to use the superpowers of auto layout to make this view look great.It’s time to get your hands dirty adding some code to show the products details in the view.In order to refer to the labels and image view from code you need to add an Like most UI elements, labels and image views are built of multiple subviews, so make sure that you have the correct view selected.You might like to read Gabriel Miro’s excellent tutorial on windows and window controllers before embarking upon this view controllers tutorial, but it’s not a requirement.Enough introduction — let’s kick off with some theory!Apple has designed the frameworks available on OS X around the Model-View-Controller design pattern, and as such has provided various controller objects that are responsible for managing the UI.

View controllers are responsible for hooking up the model layer to the view layer, and have an incredibly important role in the architecture of your OS X app.

To follow this tutorial you’ll need the most recent version of OS X and Xcode installed on your mac.

There’s no starter project — you’ll build a great app from scratch!

In this OS X view controllers tutorial you’ll discover the wide range of functionality that is baked into vanilla view controllers, along with learning how you can create your own view controller subclasses to build up your app in an easy-to-understand manner.

You’ll see how the life cycle methods allow you to hook into important events for the UI of your app, together with how view controllers compare with window controllers.

Now we’ll set up the auto layout constraints for this view. On the canvas, the view controller is connected to the container view with an embed segue.

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