图片

用于显示 SF 符号的 SwiftUI 图片组件。

iOS

tvOS

Bundled version:

~55.0.2

Expo UI 图片使用 SwiftUI Image API 显示 SF 符号。SF 符号是苹果提供的一个可配置符号库。

🌐 Expo UI Image displays SF Symbols using the SwiftUI Image API. SF Symbols are a library of configurable symbols provided by Apple.

安装

🌐 Installation

Terminal

- npx 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

🌐 Usage

基本 SF 符号

🌐 Basic SF Symbol

BasicImageExample.tsx

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

export default function BasicImageExample() {
  return (
    <Host matchContents>
      <Image systemName="star.fill" />
    </Host>
  );
}

按尺寸和颜色

🌐 With size and color

ImageSizeColorExample.tsx

import { Host, HStack, Image } from '@expo/ui/swift-ui';

export default function ImageSizeColorExample() {
  return (
    <Host matchContents>
      <HStack spacing={16}>
        <Image systemName="heart.fill" size={24} color="red" />
        <Image systemName="star.fill" size={32} color="orange" />
        <Image systemName="bell.fill" size={40} color="blue" />
      </HStack>
    </Host>
  );
}

带有变量值

🌐 With variable value

某些 SF 符号会根据变量值改变其外观。使用 variableValue 属性，取值范围在 0.0 到 1.0 之间，以控制渲染的符号。需要 iOS 16.0 及以上版本和 SF Symbols 4.0 及以上版本。

🌐 Some SF Symbols alter their appearance based on a variable value. Use the variableValue prop with a value between 0.0 and 1.0 to control the rendered symbol. Requires iOS 16.0+ and SF Symbols 4.0+.

ImageVariableExample.tsx

import { Host, HStack, Image } from '@expo/ui/swift-ui';

export default function ImageVariableExample() {
  return (
    <Host matchContents>
      <HStack spacing={16}>
        <Image systemName="chart.bar.fill" size={32} variableValue={0.3} />
        <Image systemName="chart.bar.fill" size={32} variableValue={0.6} />
        <Image systemName="chart.bar.fill" size={32} variableValue={1.0} />
      </HStack>
    </Host>
  );
}

应用接口

🌐 API

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

The variable value that alters the symbol's appearance. A number between 0.0 and 1.0. Only works with SF Symbols that support variable values (SF Symbols 4.0+).

Inherited Props

CommonViewModifierProps