工具栏与导航标题
向栏中添加标题和工具栏按钮。
工具栏与导航标题 是 CoddyKit 上的免费 SwiftUI Academy 课时。 这是第 3 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 SwiftUI Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 SwiftUI Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Naming the Screen
Every screen deserves a clear name. The navigationTitle modifier puts a heading in the navigation bar so users always know where they are. 🧭
.navigationTitle("Inbox")Where the Title Goes
Attach navigationTitle to the content inside the NavigationStack, not to the stack itself. The bar then reads the title from the current screen.
NavigationStack {
List { }
.navigationTitle("Inbox")
}Large vs Inline
By default the title is large and shrinks as you scroll. Use navigationBarTitleDisplayMode to force a compact inline style instead.
.navigationBarTitleDisplayMode(.inline)Adding Toolbar Buttons
The toolbar modifier lets you place buttons in the navigation bar, like an add button or an edit action for the current screen.
.toolbar {
Button("Add") { addItem() }
}Choosing a Placement
Wrap each control in a ToolbarItem and pick a placement so buttons land on the correct side of the bar.
.toolbar {
ToolbarItem(placement: .topBarTrailing) {
Button("Add") { }
}
}Leading and Trailing
Use topBarLeading for the left edge and topBarTrailing for the right. These adapt automatically for right-to-left languages. 🌍
Icons in the Bar
Toolbar buttons often use SF Symbols instead of words to stay compact. A small image keeps the bar tidy on every device.
Button {
addItem()
} label: {
Image(systemName: "plus")
}Many Buttons at Once
You can add several ToolbarItem entries in one toolbar block, grouping related actions like edit, share, and add together.
The Bottom Toolbar
Placement is not limited to the top. Use bottomBar to pin actions to the bottom of the screen for thumb-friendly controls.
ToolbarItem(placement: .bottomBar) {
Button("Done") { }
}Titles Follow the Stack
Each pushed screen sets its own title, and the bar updates as you navigate. The previous title even becomes the back button label.
Keep Bars Uncluttered
Resist filling the bar with buttons. Two or three clear actions keep the screen calm and easy to scan.
Quick Check
Which modifier adds buttons to the navigation bar?
Recap: Toolbar & Title
You name screens with navigationTitle and add buttons with toolbar and ToolbarItem placements. Up next, driving navigation entirely from code. 🚀
常见问题解答
「工具栏与导航标题」课时是免费的吗？
是的 — 「工具栏与导航标题」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 SwiftUI Academy 课程的其余内容，请升级到 CoddyKit PRO。 SwiftUI Academy 课程共包含 4 节课。
「工具栏与导航标题」这节课中我会学到什么？
向栏中添加标题和工具栏按钮。 你通过在浏览器中直接运行的动手代码来练习 SwiftUI Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 SwiftUI Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 SwiftUI Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 3 节课，共 4 节。
「工具栏与导航标题」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 SwiftUI Academy 课中编写并运行代码吗？
能。每节 SwiftUI Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。