harmony 鸿蒙ArkUI Layout Development (ArkTS)

2023-06-24
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ArkUI Layout Development (ArkTS)

What should I do if the height settings in position do not take effect?

Applicable to: OpenHarmony 3.2 Beta 5 (API version 9)

Solution

When position is set for a container component, it is taken out of normal flow and works independently from the outer container. In this case, the height does not take effect. You can replace the outer container with a stack to solve this issue.

How do I implement horizontal scrolling on a <Grid> component?

Applicable to: OpenHarmony 3.2 Beta 5 (API version 9)

Set rowsTemplate (the number of rows) for the <Grid> component and do not set columnsTemplate (the number of columns). In this way, the <Grid> component scrolls horizontally when its content does not fit within its width.

What should I do if the <List> component cannot be dragged to the bottom when it is used with another component and does not have the size specified?

Applicable to: OpenHarmony 3.2 Beta 5 (API version 9)

Add the layoutWeight attribute for the <List> component so that it takes up the remaining height (or width, depending on the scrolling direction) adapatively.

By default, the <List> component, as a scrollable container, takes up the entire screen height. When it is used with any component whose height is fixed, you need to explicitly add the layoutWeight attribute for the <List> component so that it takes up the remaining height instead of the entire screen height.

Can tab switching be disabled for the <Tabs> component?

Applicable to: OpenHarmony 3.2 Release (API version 9)

No. This feature is not supported.

How do I intercept the onBackPress event so that it does not trigger page return?

Applicable to: OpenHarmony 3.2 Release (API version 9)

If true is returned in onBackPress, the page executes its own return logic instead of the default return logic.

Reference

onBackPress.

How do I implement a sticky header for a list item group in the <List> component?

Applicable to: OpenHarmony 3.2 Release (API version 9)

You can use the sticky attribute of the <List> component together with the <ListItemGroup> component. Specifically, set the sticky attribute of the <List> component to StickyStyle.Header and set the header parameter of the corresponding <ListItemGroup> component.

Reference

Adding a Sticky Header