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GridView

A scrollable, 2D array of controls.

信息

GridView is very effective for large lists (thousands of items). Prefer it over wrapping Column or Row for smooth scrolling. See Flet Icons Browser for GridView usage example.

Examples​

Live example

import flet as ft

def main(page: ft.Page):
    page.title = "GridView Example"
    page.theme_mode = ft.ThemeMode.DARK
    page.padding = 50
    page.update()

    images = ft.GridView(
        expand=1,
        runs_count=5,
        max_extent=150,
        child_aspect_ratio=1.0,
        spacing=5,
        run_spacing=5,
    )

    page.add(images)

    for i in range(0, 60):
        images.controls.append(
            ft.Image(
                src=f"https://picsum.photos/150/150?{i}",
                fit=ft.ImageFit.NONE,
                repeat=ft.ImageRepeat.NO_REPEAT,
                border_radius=ft.border_radius.all(10),
            )
        )
    page.update()

ft.app(target=main, view=ft.WEB_BROWSER)

Properties​

auto_scroll​

True if scrollbar should automatically move its position to the end when children updated. Must be False for scroll_to() method to work.

child_aspect_ratio​

The ratio of the cross-axis to the main-axis extent of each child.

controls​

A list of Controls to display inside GridView.

horizontal​

True to layout GridView items horizontally.

max_extent​

The maximum width or height of the grid item.

on_scroll_interval​

Throttling in milliseconds for on_scroll event. Default is 10.

padding​

The amount of space by which to inset the children.

See Container.padding property for more information and possible values.

run_spacing​

The number of logical pixels between each child along the cross axis.

runs_count​

The number of children in the cross axis.

spacing​

The number of logical pixels between each child along the main axis.

Methods​

scroll_to(offset, delta, key, duration, curve)​

Moves scroll position to either absolute offset, relative delta or jump to the control with specified key.

See Column.scroll_to() for method details and examples.

Events​

on_scroll​

Fires when scroll position is changed by a user.

See Column.on_scroll for event details and examples.