The hierarchy of a heading in relation to other headings.
Assistive technologies can use this to improve a user's navigation
through multiple headings. When users navigate through top level
headings they expect the content for each heading to be unrelated.
For example, you can categorize a list of available products into sections,
like Fruits and Vegetables. With only top level headings, this list requires no
heading hierarchy, and you use the ``unspecified`` heading level. On the other hand, if sections
contain subsections, like if the Fruits section has subsections for varieties of Apples,
Pears, and so on, you apply the ``h1`` level to Fruits and Vegetables, and the ``h2``
level to Apples and Pears.
Except for ``h1``, be sure to precede all leveled headings by another heading with a level
that's one less.
Creates a new instance with the specified raw value.
If there is no value of the type that corresponds with the specified raw
value, this initializer returns `nil`. For example:
enum PaperSize: String {
case A4, A5, Letter, Legal
}
print(PaperSize(rawValue: "Legal"))
// Prints "Optional(PaperSize.Legal)"
print(PaperSize(rawValue: "Tabloid"))
// Prints "nil"
- Parameter rawValue: The raw value to use for the new instance.
get · iOS 15.0+
rawValue
TypeScript
getRawValue($self: AccessibilityHeadingLevel): number
Swift declaration
var rawValue: UInt { get }
The corresponding value of the raw type.
A new instance initialized with `rawValue` will be equivalent to this
instance. For example:
enum PaperSize: String {
case A4, A5, Letter, Legal
}
let selectedSize = PaperSize.Letter
print(selectedSize.rawValue)
// Prints "Letter"
print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!)
// Prints "true"
