This content originally appeared on DEV Community and was authored by ShuGang Zhou
HarmonyOS 5 News App Navigation Bar Implementation
Abstract
This article introduces the implementation of the navigation bar in the HarmonyOS 5.0 news application. It uses the ArkTS language to implement the NavBarBuilder and BarButton components to control the layout and style of the navigation bar.
Implementation Steps
- Define the
NavBarBuilderbuilder. - Define the
BarButtoncomponent. - Configure button styles and layouts.
Code Implementation
1. Define the NavBarBuilder Builder
@Builder
NavBarBuilder() {
Row({ space: 10 }) {
BarButton({ icon: $r('sys.media.ohos_ic_public_email') , type: 'normal' })
Blank()
BarButton({ icon: $r('sys.media.ohos_ic_public_search_filled') , type: 'normal' })
BarButton({ icon: $r('sys.media.ohos_ic_public_clock') , type: 'normal' })
}
.padding(15)
.width('100%')
}
2. Define the BarButton Component
@Component
struct BarButton {
icon: ResourceStr = ''
type: 'transparent' | 'normal' = 'transparent'
build() {
Row() {
Image(this.icon)
.width(24)
.height(24)
.fillColor(this.type === 'transparent' ? Color.White : Color.Black)
}
.justifyContent(FlexAlign.Center)
.width(40)
.aspectRatio(1)
.borderRadius(22)
.backgroundColor(this.type === 'transparent' ? '#45FFFFFF' : '#f3f4f5')
}
}
Summary
Key knowledge points include the use of the @Builder decorator, component definition, the use of the Row layout container, and the configuration of style attributes. By combining the NavBarBuilder and BarButton components, a flexible and configurable navigation bar is implemented.
This content originally appeared on DEV Community and was authored by ShuGang Zhou
ShuGang Zhou | Sciencx (2025-06-27T03:44:45+00:00) HarmonyOS5-NewsAPP-NavBar. Retrieved from https://www.scien.cx/2025/06/27/harmonyos5-newsapp-navbar/
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