When you add child views to a StackLayout, they will be arranged one after the other in the specified direction, either horizontally or vertically. By default, the orientation of a StackLayout is vertical, but you can change it to horizontal by setting the orientation property.

::: danger Important

StackLayout is a basic layout container often used excessively in complex layouts. Overusing it with many nested containers or numerous child views can result in poor performance and slow rendering. If you're extensively nesting <StackLayout>, consider switching to <GridLayout> or <FlexboxLayout> for better performance.

:::

By default, <StackLayout> stacks its child items vertically. The following example creates a vertical StackLayout of 3 equally-sized elements. Items are stretched to cover the entire width of the screen. Items are placed in the order they were declared in.

<StackLayout backgroundColor="#3c495e">
  <Label text="first" height="70" backgroundColor="#43B3F4" />
  <Label text="second" height="70" backgroundColor="#1089CA" />
  <Label text="third" height="70" backgroundColor="#075B88" />
</StackLayout>

Child elements of a vertical StackLayout can align themselves horizontally at left, center or right positions with the horizontalAlignment property.

For example, we can align child elements diagonally in a vertical StackLayout.

<StackLayout backgroundColor="#3c495e">
  <Label
    text="left"
    horizontalAlignment="left"
    width="33%"
    height="70"
    backgroundColor="#43B3F4"
  />
  <Label
    text="center"
    horizontalAlignment="center"
    width="33%"
    height="70"
    backgroundColor="#1089CA"
  />
  <Label
    text="right"
    horizontalAlignment="right"
    width="33%"
    height="70"
    backgroundColor="#075B88"
  />
  <Label
    text="stretch"
    horizontalAlignment="stretch"
    height="70"
    backgroundColor="#43B3F4"
  />
</StackLayout>

Setting orientation="horizontal" on the StackLayout will stack items horizontally. The following example creates a horizontal StackLayout of 3 equally-sized elements. Items are stretched to cover the entire height of the screen.

<StackLayout orientation="horizontal" backgroundColor="#3c495e">
  <Label text="first" width="70" backgroundColor="#43B3F4" />
  <Label text="second" width="70" backgroundColor="#1089CA" />
  <Label text="third" width="70" backgroundColor="#075B88" />
</StackLayout>

Child elements of a horizontal StackLayout can align themselves veritcally at top, center or bottom positions with the verticalAlignment property. The following example creates a diagonal stack of items with responsive sizes.

<StackLayout orientation="horizontal" backgroundColor="#3c495e">
  <Label
    text="top"
    verticalAlignment="top"
    width="70"
    height="33%"
    backgroundColor="#43B3F4"
  />
  <Label
    text="center"
    verticalAlignment="center"
    width="70"
    height="33%"
    backgroundColor="#1089CA"
  />
  <Label
    text="bottom"
    verticalAlignment="bottom"
    width="70"
    height="33%"
    backgroundColor="#075B88"
  />
  <Label
    text="stretch"
    verticalAlignment="stretch"
    width="70"
    backgroundColor="#43B3F4"
  />
</StackLayout>

orientation: string = 'vertical' | 'horizontal'

Specifies the direction of child elements in the StackLayout.

Valid values: vertical and horizontal.

Default value: vertical.

Additional inherited properties not shown. Refer to the API Reference