tab bar更新了什么
Asked on 06/16/2025
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在WWDC 2024中，Apple对Tab Bar进行了多项更新，特别是在iPadOS 18中。以下是一些主要的更新内容：
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视觉更新: Tab Bar在iPadOS 18中获得了新的紧凑外观，减少了垂直和水平的空白空间，使应用内容更加突出。
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结合侧边栏体验: 现有的侧边栏应用可以采用新的UITabBarController API，以获得结合Tab和侧边栏的体验。当侧边栏最小化时，它会动画化地回到Tab Bar中。
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自定义功能: 新的Tab Bar允许用户通过拖放来个性化侧边栏和Tab Bar。
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浮动设计: 在iOS 18中，Tab Bar被重新设计为浮动在网页上方，并动态缩小以将内容置于中心位置。
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SwiftUI更新: 在iOS 18中，TabView有了新的语法，使得在构建时更容易捕捉常见错误，并支持程序化选择。
这些更新旨在提升用户体验，使应用程序的导航更加直观和个性化。
有关详细信息，您可以查看以下相关的WWDC 2024会话：
- What’s new in UIKit (01:24)
- Elevate your tab and sidebar experience in iPadOS (00:52)
What’s new in UIKit
Explore everything new in UIKit, including tab and document launch experiences, transitions, and text and input changes. We’ll also discuss better-than-ever interoperability between UIKit and SwiftUI animations and gestures, as well as general improvements throughout UIKit.
Elevate your tab and sidebar experience in iPadOS
iPadOS 18 introduces a new navigation system that gives people the flexibility to choose between using a tab bar or sidebar. The newly redesigned tab bar provides more space for content and other functionality. Learn how to use SwiftUI and UIKit to enable customization features – like adding, removing and reordering tabs – to enable a more personal touch in your app.
Keynote
Don’t miss the exciting reveal of the latest Apple software and technologies.