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View

View is the top most container for all other controls.

A root view is automatically created when a new user session started. From layout perspective the View represents a Column control, so it has a similar behavior and shares same properties.

Properties​

appbar​

A AppBar control to display at the top of the Page.

auto_scroll​

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

bgcolor​

Background color of the view.

can_pop​

This property controls whether the view can be uncoditionally removed from navigation either programmatically, say by modifying page.views list, or when a user uses device back button.

By default, can_pop is True which means the view will be removed with no questions asked. However, if you set View.can_pop to False then you can add View.on_confirm_pop event handler where you can open an alert dialog to confirm or do other checks and then call View.confirm_pop(True|False) method to either allow or prevent view from removal.

Another use case is setting page.views[0].canPop = False for root view to prevent closing the app with hardware back button on Android.

controls​

A list of Controls to display on the Page.

For example, to add a new control to a page:

page.controls.append(ft.Text("Hello!"))
page.update()

or to get the same result as above using page.add() shortcut method:

page.add(ft.Text("Hello!"))

To remove the top most control on the page:

page.controls.pop()
page.update()

Value is of a list of Controls.

decoration​

The background decoration.

Value is of type BoxDecoration.

drawer​

A NavigationDrawer control to display as a panel sliding from the start edge of the view.

end_drawer​

A NavigationDrawer control to display as a panel sliding from the end edge of the view.

floating_action_button​

A FloatingActionButton control to display on top of Page content.

floating_action_button_location​

Describes position of floating_action_button

Value is of type FloatingActionButtonLocation

foreground_decoration​

The foreground decoration.

Value is of type BoxDecoration.

fullscreen_dialog​

Whether this view is a full-screen dialog.

In Material and Cupertino, being fullscreen has the effects of making the app bars have a close button instead of a back button. On iOS, dialogs transitions animate differently and are also not closeable with the back swipe gesture.

Value is of type bool and defaults to False.

horizontal_alignment​

How the child Controls should be placed horizontally.

Value is of type CrossAxisAlignment and defaults to CrossAxisAlignment.START.

on_scroll_interval​

Throttling in milliseconds for on_scroll event.

Value is of type int and defaults to 10.

padding​

A space between page contents and its edges.

Value is of type PaddingValue and defaults to padding.all(10).

route​

View's route - not currently used by Flet framework, but can be used in a user program to update page.route when a view popped.

Value is of type str

scroll​

Enables a vertical scrolling for the Page to prevent its content overflow.

Value is of type ScrollMode.

spacing​

Vertical spacing between controls on the Page. Default value is 10 virtual pixels. Spacing is applied only when vertical_alignment is set to MainAxisAlignment.START, MainAxisAlignment.END or MainAxisAlignment.CENTER.

Value is of type [OptionalNumber] and defaults to 10

vertical_alignment​

How the child Controls should be placed vertically.

Value is of type MainAxisAlignment and defaults to MainAxisAlignment.START.

Methods​

confirm_pop(allow: bool)​

Either allow or cancel view removal from the navigation. Used together with View.can_pop property and View.on_confirm_pop event.

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_confirm_pop​

Fires when a view is about to be removed from the navigation. Allows to ask user for confirmation or do other checks and either allow or cancel removal of a view by calling View.confirm_pop(True | False) method. This event is fired if View.can_pop set to False.

on_scroll​

Fires when scroll position is changed by a user.

Event handler argument is of type OnScrollEvent.

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