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Discover how to effectively manage your SwiftUI app's toolbar in full-screen mode, enhancing user experience and minimizing distractions with practical solutions.
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How to Hide Your Toolbar in SwiftUI When Full Screen

If you're developing a SwiftUI app and want to improve user experience by managing the toolbar visibility during full-screen mode, you're in the right place. The behavior of toolbars in applications such as the Preview app can be particularly useful when it comes to creating a cleaner workspace by hiding or collapsing the toolbar when in full screen. Let's dive into how you can replicate this feature in your own SwiftUI application.

The Challenge: Managing Toolbar Visibility

Many SwiftUI developers struggle with displaying toolbars only when necessary. Specifically, you may want your main window to showcase a toolbar while other windows operate without one, especially when in full-screen mode.

Here are the key elements of the challenge:

You want to make sure that all windows except the main one do not display a toolbar or that it collapses.

You're working with multiple WindowGroups and possibly experimenting with different styles and settings.

The Solution: Implementing a Toolbar Hiding Mechanism

Achieving the desired behavior involves accessing the underlying NSWindow and setting a custom delegate that implements specific full-screen options. Below, I'll break down the steps you need to take to make this happen.

Step 1: Create a NSViewRepresentable to Find the Window

First, you need a way to get a reference to the underlying window. You can accomplish this by creating an NSViewRepresentable. Here is how it can be coded:

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Step 2: Create a Custom Window Delegate

Next, you will need to define a custom delegate for the NSWindow. The delegate will handle the toolbar behavior as you enter full-screen mode. Here’s how you can implement this:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Setting Up Your View

Finally, integrate the custom delegate within your SwiftUI view. This ensures that your window listens for the full-screen events and applies the behavior you want.

Here’s how to set up the ContentView:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion: Your Toolbar Management is Ready

With this setup, your ContentView will automatically hide the toolbar when entering full-screen mode, creating a cleaner interface. Users can easily access the toolbar again by moving their cursor to the top of the screen.

By applying these steps, your SwiftUI application will behave more like the professional apps that users appreciate – free from unnecessary distractions while providing essential controls when needed. Give it a try and enhance the user experience in your SwiftUI applications!