Struct SemanticsCustomAction 

pub struct SemanticsCustomAction {
    pub label: String,
    /* private fields */
}

Re-export the UI crate so applications can depend on a single crate. A screen-reader action that is not a click, e.g. Compose’s customActions = listOf(CustomAccessibilityAction("Pause") { … }).

TalkBack surfaces these through its actions menu rather than by activating the node, which is the only way to reach a command that has no on-screen control — pausing a game whose whole surface is one tap-to-launch target.

Fields

label: String

What the screen reader reads out in its actions menu.

Implementations

impl SemanticsCustomAction

pub fn new( label: impl Into<String>, handler: impl Fn() + 'static, ) -> SemanticsCustomAction

pub fn invoke(&self)

Trait Implementations

impl Clone for SemanticsCustomAction

fn clone(&self) -> SemanticsCustomAction

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SemanticsCustomAction

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for SemanticsCustomAction

impl PartialEq for SemanticsCustomAction

Two custom actions are the same action when they read the same.

The handler is deliberately excluded. A semantics recorder runs on every collection, so the closure is a fresh Rc each time and comparing handler identity would report “the tree changed” on every frame — which on Android means re-serialising and re-publishing the whole virtual-view tree across JNI 60 times a second. Handlers are looked up in the live semantics tree at the moment the action fires (see perform_custom_action), so a handler that is newer than the last published snapshot is still the one that runs.

fn eq(&self, other: &SemanticsCustomAction) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.