Form

一个 SwiftUI Form 组件，用于以结构化布局收集用户输入。

iOS

tvOS

Included in Expo Go

GitHub

npm

更新日志

Recommended version:

~58.0.1

Expo UI Form 与官方 SwiftUI Form API 相对应。它提供一个容器，用于对数据输入控件进行分组，例如设置或检查面板中的控件。

安装

Terminal

- npx expo install @expo/ui

- yarn expo install @expo/ui

- pnpm expo install @expo/ui

- bun expo install @expo/ui

If you are installing this in an existing React Native app, make sure to install expo in your project.

用法

基本表单

BasicFormExample.tsx

import { Host, Form, TextField } from '@expo/ui/swift-ui';

export default function BasicFormExample() {
  return (
    <Host style={{ flex: 1 }}>
      <Form>
        <TextField placeholder="Enter your name" />
      </Form>
    </Host>
  );
}

带分区的表单

使用 Section 组件对表单中相关的控件进行分组。

FormWithSectionsExample.tsx

import { useState } from 'react';
import {
  Host,
  Form,
  Section,
  TextField,
  Toggle,
  Button,
} from '@expo/ui/swift-ui';

export default function FormWithSectionsExample() {
  const [notifications, setNotifications] = useState(false);
  const [darkMode, setDarkMode] = useState(false);

  return (
    <Host style={{ flex: 1 }}>
      <Form>
        <Section title="Profile">
          <TextField placeholder="Name" />
          <TextField placeholder="Email" />
        </Section>

        <Section title="Preferences">
          <Toggle
            label="Enable notifications"
            isOn={notifications}
            onIsOnChange={setNotifications}
          />
          <Toggle
            label="Dark mode"
            isOn={darkMode}
            onIsOnChange={setDarkMode}
          />
        </Section>

        <Section>
          <Button
            label="Save changes"
            onPress={() => console.log('Saved!')}
          />
        </Section>
      </Form>
    </Host>
  );
}

带自定义背景的表单

使用 scrollContentBackground 修饰符来自定义或隐藏表单的背景。

FormBackgroundExample.tsx

import { Host, Form, Section, TextField } from '@expo/ui/swift-ui';
import {
  scrollContentBackground,
  background,
} from '@expo/ui/swift-ui/modifiers';

export default function FormBackgroundExample() {
  return (
    <Host style={{ flex: 1 }}>
      <Form
        modifiers={[
          scrollContentBackground('hidden'),
          background('#F0F0F0'),
        ]}>
        <Section title="Custom Background">
          <TextField placeholder="Enter text" />
        </Section>
      </Form>
    </Host>
  );
}

不可滚动的表单

使用 scrollDisabled 修饰符可阻止表单滚动。

注意： scrollDisabled 修饰符仅在 iOS 16+ 和 tvOS 16+ 上可用。

NonScrollableFormExample.tsx

import { useState } from 'react';
import {
  Host,
  Form,
  Section,
  TextField,
  Toggle,
} from '@expo/ui/swift-ui';
import { scrollDisabled } from '@expo/ui/swift-ui/modifiers';

export default function NonScrollableFormExample() {
  const [isOn, setIsOn] = useState(false);

  return (
    <Host style={{ flex: 1 }}>
      <Form modifiers={[scrollDisabled()]}>
        <Section title="Settings">
          <Toggle
            label="Enable feature"
            isOn={isOn}
            onIsOnChange={setIsOn}
          />
        </Section>
      </Form>
    </Host>
  );
}

下拉刷新表单

使用 refreshable 修饰符添加下拉刷新功能。

RefreshableFormExample.tsx

import { useState, useCallback } from 'react';
import { Host, Form, Section, Text } from '@expo/ui/swift-ui';
import { refreshable } from '@expo/ui/swift-ui/modifiers';

export default function RefreshableFormExample() {
  const [lastRefresh, setLastRefresh] = useState(new Date());

  const handleRefresh = useCallback(async () => {
    // Simulate network request
    await new Promise(resolve => setTimeout(resolve, 1500));
    setLastRefresh(new Date());
  }, []);

  return (
    <Host style={{ flex: 1 }}>
      <Form modifiers={[refreshable(handleRefresh)]}>
        <Section title="Pull to refresh">
          <Text>
            Last refreshed: {lastRefresh.toLocaleTimeString()}
          </Text>
        </Section>
      </Form>
    </Host>
  );
}

API

import { Form } from '@expo/ui/swift-ui';

Component

`Form`

iOS

tvOS

Type: React.Element<FormProps>

FormProps

`children`

iOS

tvOS

Type: ReactNode

The content of the form.

Inherited props

CommonViewModifierProps