Android: Alignment needs to be done through the content itself. Windows: Set IsDynamicOverflowEnabled='False' for proper behavior. IOS and Android: Please refer to the Padding section.Īndroid: Stretch and Left are supported. IOS: Always use HorizontalAlignment.Stretch. IOS and Android: Fixed and can't be changed. To intercept back navigation, you must replace the native back button with your own custom button using NavigationCommand (see below). The navigation can't be intercepted or canceled. The Frame will raise the Navigated event, and its state will automatically be updated to reflect the navigation. On iOS, tapping the back button automatically triggers a back navigation on the native UINavigationController (which is part of the native Frame implementation). It's the responsibility of the application's navigation controller to eventually call Frame.GoBack(). On Android, tapping the back button triggers SystemNavigationService.BackRequested. Whenever the CommandBar is part of a Page whose Frame has a non-empty back stack, the back button will be displayed.

Back buttonĪn important difference with this mode is the presence of a back button. You must use VisibleBoundsPadding.PaddingMask='Top' on CommandBar to properly support the notch or punch-holes on iOS and Android. Additionally, you can't customize the visual states of either the CommandBar or its AppBarButtons. In this mode, the CommandBar can't be fully customized like other templatable controls would. The rest of this document will exclusively cover this mode. Transitions when navigating between pages. Native pressed states (ripple), native overflow menu. It uses platform-specific controls to ensure a more native user experience. This mode is the preferred one and is enabled by default. We usually avoid using this mode, and prefer to use the Native one instead.This mode hasn't been extensively tested.It is templatable and supports a template that's almost identical to UWP's default CommandBar. The CommandBar supports 2 different modes: Mode This document exists to highlight some of the differences you might encounter when working with the native mode of CommandBar on either iOS or Android. In most cases, you should refer to the official CommandBar documentation. The CommandBar in Uno is designed to be used the same way you would use the CommandBar on UWP.

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