harmony 鸿蒙slider

  • 2023-06-24
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slider

The <Slider> component is used to quickly adjust settings, such as the volume and brightness.

NOTE

This component is supported since API version 4. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

Not supported

Attributes

Name Type Default Value Mandatory Description
min number 0 No Minimum value of the slider.
max number 100 No Maximum value of the slider.
value number 0 No Initial value of the slider.
id string - No Unique ID of the component.
style string - No Style declaration of the component.
class string - No Style class of the component, which is used to refer to a style table.
ref string - No Reference information of child elements, which is registered with the parent component on $refs.

Events

Name Parameter Description
change ChangeEvent Triggered when the value changes.
click - Triggered when the component is clicked.
longpress - Triggered when the component is long pressed.
swipe5+ SwipeEvent Triggered when a user quickly swipes on the component.

Table 1 ChangeEvent

Attribute Type Description
progress(deprecated5+) string Current value of the slider.
value5+ number Current value of the slider.

Styles

Name Type Default Value Mandatory Description
color &lt;color&gt; #000000 No Background color of the slider.
selected-color &lt;color&gt; #ffffff No Selected color of the slider.
width &lt;length&gt; |&lt;percentage&gt;5+ - No Component width.
If this attribute is not set, the default value 0 is used.
height &lt;length&gt; |&lt;percentage&gt;5+ - No Component height.
If this attribute is not set, the default value 0 is used.
padding &lt;length&gt; 0 No Shorthand attribute to set the padding for all sides.
The attribute can have one to four values:
- If you set only one value, it specifies the padding for all the four sides.
- If you set two values, the first value specifies the top and bottom padding, and the second value specifies the left and right padding.
- If you set three values, the first value specifies the top padding, the second value specifies the left and right padding, and the third value specifies the bottom padding.
- If you set four values, they respectively specify the padding for top, right, bottom, and left sides (in clockwise order).
padding-[left|top|right|bottom] &lt;length&gt; 0 No Left, top, right, and bottom padding.
margin &lt;length&gt; |&lt;percentage&gt;5+ 0 No Shorthand attribute to set the margin for all sides. The attribute can have one to four values:
- If you set only one value, it specifies the margin for all the four sides.
- If you set two values, the first value specifies the top and bottom margins, and the second value specifies the left and right margins.
- If you set three values, the first value specifies the top margin, the second value specifies the left and right margins, and the third value specifies the bottom margin.
- If you set four values, they respectively specify the margin for top, right, bottom, and left sides (in clockwise order).
margin-[left|top|right|bottom] &lt;length&gt; |&lt;percentage&gt;5+ 0 No Left, top, right, and bottom margins.
border-width &lt;length&gt; 0 No Shorthand attribute to set the margin for all sides.
border-color &lt;color&gt; black No Shorthand attribute to set the color for all borders.
border-radius &lt;length&gt; - No Radius of round-corner borders.
background-color &lt;color&gt; - No Background color.
display string flex No How and whether to display the box containing an element. Available values are as follows:
- flex: flexible layout
- none: not rendered
[left|top] &lt;length&gt; |&lt;percentage&gt;6+ - No Edge of the element.
- left: left edge position of the element. This attribute defines the offset between the left edge of the margin area of a positioned element and left edge of its containing block.
- top: top edge position of the element. This attribute defines the offset between the top edge of a positioned element and that of a block included in the element.

Example

<!-- xxx.hml -->
<div class="container">
  <text>slider start value is {{startValue}}</text>
  <text>slider current value is {{currentValue}}</text>
  <text>slider end value is {{endValue}}</text>
  <slider min="0" max="100" value="{{value}}" onchange="setvalue" style="width: 20%;height: 10%"></slider>
</div>
/* xxx.css */
.container {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}
// xxx.js
export default {
  data: {
    value: 0,
    startValue: 0,
    currentValue: 0,
    endValue: 100,
  },
  setvalue(e) {
    this.currentValue = e.value;
  }
}

slider

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