harmony 鸿蒙Span

2022-08-09
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Span

As a child of the <Text> and <RichEditor> components, the <Span> component is used to display inline text.

NOTE

This component is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.

Since API version 10, this component can inherit the attributes of the <Text> parent component. That is, if no attribute is set for this component, it inherits the attributes (if set) of its parent component. Only the following attributes can be inherited: fontColor, fontSize, fontStyle, fontWeight, decoration, letterSpacing, textCase, and fontfamily.

Child Components

Not supported

APIs

Span(value: string|Resource)

Since API version 9, this API is supported in ArkTS widgets.

Parameters

Name	Type	Mandatory	Description
value	string \|Resource	Yes	Plain text.

Attributes

In addition to the universal text style attributes, the following attributes are supported.

Name	Type	Description
decoration	{ type: TextDecorationType, color?: ResourceColor }	Style and color of the text decorative line. Default value: { type: TextDecorationType.None color: Color.Black } Since API version 9, this API is supported in ArkTS widgets.
letterSpacing	number \|string	Letter spacing. A negative value tightens the spacing; a positive value loosens the spacing, and the letters are spread farther apart with the value. Since API version 9, this API is supported in ArkTS widgets.
textCase	TextCase	Text case. Default value: TextCase.Normal Since API version 9, this API is supported in ArkTS widgets.
font¹⁰⁺	Font	Text style, covering the font size, font width, Font family, and font style.

Events

Among all the universal events, only the click event is supported.

NOTE

As the <Span> component does not include size information, the target attribute of the ClickEvent object returned by the click event is invalid.

Example

// xxx.ets
@Entry
@Component
struct SpanExample {
  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Start, justifyContent: FlexAlign.SpaceBetween }) {
      Text('Basic Usage').fontSize(9).fontColor(0xCCCCCC)
      Text() {
        Span('In Line')
        Span(' Component')
        Span(' !')
      }

      Text() {
        Span('This is the Span component').fontSize(12).textCase(TextCase.Normal)
          .decoration({ type: TextDecorationType.None, color: Color.Red })
      }

      // Add a line under the text.
      Text('Text Decoration').fontSize(9).fontColor(0xCCCCCC)
      Text() {
        Span('I am Underline-span').decoration({ type: TextDecorationType.Underline, color: Color.Red }).fontSize(12)
      }

      Text() {
        Span('I am LineThrough-span')
          .decoration({ type: TextDecorationType.LineThrough, color: Color.Red })
          .fontSize(12)
      }

      Text() {
        Span('I am Overline-span').decoration({ type: TextDecorationType.Overline, color: Color.Red }).fontSize(12)
      }

      // Set the letter spacing.
      Text('LetterSpacing').fontSize(9).fontColor(0xCCCCCC)
      Text() {
        Span('span letter spacing')
          .letterSpacing(0)
          .fontSize(12)
      }

      Text() {
        Span('span letter spacing')
          .letterSpacing(-2)
          .fontSize(12)
      }

      Text() {
        Span('span letter spacing')
          .letterSpacing(3)
          .fontSize(12)
      }


      // Set the text case.
      Text('Text Case').fontSize(9).fontColor(0xCCCCCC)
      Text() {
        Span('I am Lower-span').fontSize(12)
          .textCase(TextCase.LowerCase)
          .decoration({ type: TextDecorationType.None })
      }

      Text() {
        Span('I am Upper-span').fontSize(12)
          .textCase(TextCase.UpperCase)
          .decoration({ type: TextDecorationType.None })
      }
    }.width('100%').height(250).padding({ left: 35, right: 35, top: 35 })
  }
}

Span