How to Hide Volume Indicator in SwiftUI for iOS Apps

Описание: Learn to eliminate the system volume overlay in your SwiftUI iOS applications using MPVolumeView with a custom volume slider.
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This video is based on the question https://stackoverflow.com/q/73999179/ asked by the user 'Perry Wang' ( https://stackoverflow.com/u/19323309/ ) and on the answer https://stackoverflow.com/a/74734364/ provided by the user 'Malte' ( https://stackoverflow.com/u/9263076/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Hide Volume Indicator in SwiftUI for iOS Apps

Creating a music player app in iOS comes with its own set of challenges, especially when it comes to managing the audio interface. One common issue developers face is the appearance of the system volume overlay when changing volume. If you want to maintain a clean user interface by hiding this overlay, you may find that most existing solutions refer to UIKit methods rather than SwiftUI. In this guide, we will guide you through creating a custom volume slider using SwiftUI that hides the volume indicator effectively.

Understanding the Problem

The system volume overlay can be disruptive when users change the volume on your app's interface. Developers often rely on MPVolumeView, which is part of UIKit, to control the audio volume, but this comes with its own UI elements that may not be desirable. Here’s a common problem raised by developers:

Volume Overlay Appears: Even when employing the MPVolumeView, the default volume indicator is displayed when the volume is adjusted, which can interfere with the custom design of your app.

Key Points to Address

Hiding the system volume overlay while retaining volume control functionality is essential for a polished user interface.

SwiftUI does not natively provide a way to manage audio volume without the default overlay appearing.

Step-by-Step Solution

After thorough exploration, here's a complete solution that builds a custom volume slider in SwiftUI without displaying the system's default volume controller. Follow these steps to implement your volume control.

Step 1: Create a Custom Volume Slider

First, let's create a VolumeSliderView that utilizes an internal view model to manage the volume state.

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Step 2: Create the Volume View

Next, we will need to create a VolumeView that uses UIViewRepresentable to integrate the UIKit component seamlessly into SwiftUI.

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Step 3: Manage Volume with View Model

Use an observable object to manage the volume level and ensure that the volume can be adjusted without showing the overlay.

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Conclusion

This method allows you to maintain control over the audio level without letting the system's volume indicator interrupt user experience. Although it may feel a bit hacky to keep an instance of the MPVolumeView hidden, this is currently the only method that works effectively with SwiftUI.

By following the steps outlined above, you should now have a functional and aesthetically cohesive volume controls in your music player app. This technical solution will elevate the overall user experience and make your app stand out in a competitive marketplace.

Hope this helps you create a more engaging interface in your iOS applications!