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使用 SecureField 输入密码

使用 SecureField 隐藏敏感输入。

使用 SecureField 输入密码 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。

Hiding Sensitive Text

Passwords should never appear on screen as plain letters. SwiftUI gives you SecureField, a text field that masks every character. 🔒

Just Like TextField

A SecureField works exactly like a TextField: a placeholder and a binding. The only difference is the dots shown instead of the real characters.

SecureField("Password", text: $password)

It Still Needs State

Just like before, the typed value lives in a @State string. SecureField reads and writes it through the binding you pass with the $ prefix.

@State private var password = ""

The Real Value Is Yours

The dots are only for display. Your state string holds the actual text, so you can validate or send it even though the screen hides it.

A Bordered Look

Give it the same polish as any field. The textFieldStyle modifier with .roundedBorder makes a clean, tappable password box.

SecureField("Password", text: $password)
  .textFieldStyle(.roundedBorder)

Pairing With Username

A login screen usually stacks a normal TextField for the email above a SecureField for the password, each with its own state.

TextField("Email", text: $email)
SecureField("Password", text: $password)

Helping the System

Add textContentType(.password) so iOS offers saved passwords and Keychain suggestions, making sign-in faster for your users.

SecureField("Password", text: $password)
  .textContentType(.password)

New vs Existing Passwords

On a sign-up screen use .newPassword instead. iOS then suggests a strong, unique password and stores it in the Keychain.

SecureField("New password", text: $pw)
  .textContentType(.newPassword)

Reacting to Submit

SecureField supports onSubmit too. When the user taps return, run your login or move focus to the next field.

SecureField("Password", text: $pw)
  .onSubmit { logIn() }

Privacy by Default

Because the characters are masked, no one glancing at the screen sees the password. SecureField gives you that privacy for free.

Same Skills, Safer Field

Everything you learned about binding text still applies. SecureField is simply the safe choice whenever the input is a secret. ✨

Quick Check

What is the main difference between SecureField and TextField?

Recap

You masked secret input with SecureField, kept the real value in state, and used textContentType to help iOS suggest and save passwords. 🎉

常见问题解答

「使用 SecureField 输入密码」课时是免费的吗？

是的 — 「使用 SecureField 输入密码」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。

「使用 SecureField 输入密码」这节课中我会学到什么？

使用 SecureField 隐藏敏感输入。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。

「使用 SecureField 输入密码」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。

此课程中的所有课时

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