visionOS: An Introduction

Dec 16 2025 · Swift 6, visionOS 26, Xcode 26

Lesson 02: Volumes & RealityView

Demo

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You can start with the app in the Starter folder or continue the build from lesson one.

import RealityKit
import RealityKitContent

RealityView { content in
  if let scene = try? await Entity(named: "Scene", in: realityKitContentBundle) {
    content.add(scene)
  }
}

NavigationSplitView {
  Text("Volume Tab")
    .font(.largeTitle)
    .foregroundColor(.orange)
} detail: {
  VolumeView()
}
.tabItem {
  Image(systemName: "cube")
  Text("Volume")
}


scene.availableAnimations.forEach { animation in
  scene.playAnimation(animation.repeat(), transitionDuration: 3, startsPaused: false)
}

@State var runAnimation = false

VStack {
  Button("Start") {
    runAnimation.toggle()
  }
  //..
}

} update: { content in
    if let scene = content.entities.first {

    }
}

if runAnimation {
  scene.availableAnimations.forEach { animation in
    scene.playAnimation(animation.repeat(),
    transitionDuration: 3, startsPaused: false)
  }
} else {
  scene.stopAllAnimations()
}
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