Struct HorizontalScrollView 

pub struct HorizontalScrollView { /* private fields */ }

A HorizontalScrollView provides horizontal scrolling for content

Important Usage Notes for TabLayout

When using HorizontalScrollView with TabLayout for page switching:

1. Use pixel units: Page widths must be set using set_width_px(), not set_width()
2. Match dimensions: Use get_dimensions() to get screen width, then set each page width to match
3. Scroll position: Calculate scroll position as page_width * tab_index

Example

// Create HorizontalScrollView with snapping and no scrollbar
let scroll = activity.create_horizontal_scroll_view_with_params(
    Some(root_id), true, true, true
)?;

// Get width in pixels
let (page_width, _) = scroll.view().get_dimensions(activity)?;

// Create pages with pixel-based width
let page1 = activity.create_linear_layout(Some(content_id))?;
page1.view().set_width_px(activity, page_width)?;  // Use px, not dp!

// Scroll to page 2
scroll.set_scroll_position(activity, page_width * 2, 0, true)?;

Implementations

impl HorizontalScrollView

pub fn new(activity: &mut Activity, parent: Option<i64>) -> Result<Self>

Create a new HorizontalScrollView

pub fn new_with_params( activity: &mut Activity, parent: Option<i64>, fillviewport: bool, snapping: bool, nobar: bool, ) -> Result<Self>

Create a new HorizontalScrollView with custom parameters

pub fn id(&self) -> i64

Get the view ID

pub fn view(&self) -> &View

Get the underlying View

pub fn get_scroll_position(&self, activity: &mut Activity) -> Result<(i32, i32)>

Get the scroll position (x, y) in pixels

pub fn set_scroll_position( &self, activity: &mut Activity, x: i32, y: i32, smooth: bool, ) -> Result<()>

Set the scroll position

Arguments

• x - Horizontal scroll position in pixels
• y - Vertical scroll position in pixels (usually 0 for HorizontalScrollView)
• smooth - Whether to scroll smoothly or jump immediately