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# ProgressViewStyle

A type that applies standard interaction behavior to all progress views
within a view hierarchy.

```
@MainActor @preconcurrency protocol ProgressViewStyle
```

## Overview

To configure the current progress view style for a view hierarchy, use the
[`progressViewStyle(_:)`](/documentation/SwiftUI/View/progressViewStyle(_:)) modifier.

A type conforming to this protocol inherits `@preconcurrency @MainActor`
isolation from the protocol if the conformance is included in the type’s
base declaration:

```
struct MyCustomType: Transition {
    // `@preconcurrency @MainActor` isolation by default
}
```

Isolation to the main actor is the default, but it’s not required. Declare
the conformance in an extension to opt out of main actor isolation:

```
extension MyCustomType: Transition {
    // `nonisolated` by default
}
```

## Topics

### Getting built-in progress view styles

[`automatic`](/documentation/SwiftUI/ProgressViewStyle/automatic)

The default progress view style in the current context of the view being
styled.

[`circular`](/documentation/SwiftUI/ProgressViewStyle/circular)

The style of a progress view that uses a circular gauge to indicate the
partial completion of an activity.

[`linear`](/documentation/SwiftUI/ProgressViewStyle/linear)

A progress view that visually indicates its progress using a horizontal
bar.

### Creating custom progress view styles

[`makeBody(configuration:)`](/documentation/SwiftUI/ProgressViewStyle/makeBody(configuration:))

Creates a view representing the body of a progress view.

[`ProgressViewStyle.Configuration`](/documentation/SwiftUI/ProgressViewStyle/Configuration)

A type alias for the properties of a progress view instance.

[`Body`](/documentation/SwiftUI/ProgressViewStyle/Body)

A view representing the body of a progress view.

### Supporting types

[`DefaultProgressViewStyle`](/documentation/SwiftUI/DefaultProgressViewStyle)

The default progress view style in the current context of the view being
styled.

[`CircularProgressViewStyle`](/documentation/SwiftUI/CircularProgressViewStyle)

A progress view that uses a circular gauge to indicate the partial
completion of an activity.

[`LinearProgressViewStyle`](/documentation/SwiftUI/LinearProgressViewStyle)

A progress view that visually indicates its progress using a horizontal bar.


---

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