电子说
本示例展示了应用市场英国威廉希尔公司网站 ,页面中包括Tab栏、运营横幅、精品应用、精品游戏等。
本示例使用一次开发多端部署中介绍的自适应布局能力和响应式布局能力进行多设备(或多窗口尺寸)适配,保证应用在不同设备或不同窗口尺寸下可以正常显示。
用到了媒体查询接口[@ohos.mediaquery]
本示例在预览器中的效果:
本示例在开发板上运行的效果:
使用说明:
gitee.com/li-shizhen-skin/harmony-os/blob/master/README.md
]AppMarket/entry/src/main/ets/
|---model
| |---HomeData.ets // 主页用到的图片资源
| |---HomeDataType.ets // 事件监听函数
|---pages
| |---index.ets // 英国威廉希尔公司网站
|---common
| |---BreakpointSystem.ets // 媒体查询
| |---Home.ets // 主容器
| |---IndexApps.ets // app模块(包含安装,展示图片,更多功能)
| |---IndexContent.ets // 内容模块
| |---IndexEntrance.ets // 下一步模块(箭头跳转组件)
| |---IndexHeader.ets // 头部组件
| |---IndexSwiper.ets // 轮播图
| |---TabBarItem.ets // 导航栏
本示例介绍如何使用自适应布局能力和响应式布局能力适配不同尺寸窗口,将页面分拆为5个部分。
1、在sm和md断点下,导航栏在底部;在lg断点下,导航栏在左侧。
2、通过Tab组件的barPosition和vertical属性控制TabBar的位置在主轴方向起始或结尾位置和水平或垂直方向,同时还可以通过barWidth和barHeight属性控制TabBar的尺寸,[源码参考]。
/*
* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import Home from '../common/Home'
import TabBarItem from '../common/TabBarItem'
import BreakpointSystem from '../common/BreakpointSystem'
@Entry
@Component
struct Index {
@State currentIndex: number = 0
@StorageProp('currentBreakpoint') currentBreakpoint: string = 'md'
private breakpointSystem: BreakpointSystem = new BreakpointSystem()
private onTabChange = (index: number) = > {
this.currentIndex = index
}
aboutToAppear() {
this.breakpointSystem.register()
}
aboutToDisappear() {
this.breakpointSystem.unregister()
}
@Builder
tabItem(index: number, title: Resource, icon: Resource, iconSelected: Resource) {
TabBarItem({
index: index,
currentIndex: this.currentIndex,
title: title,
icon: icon,
iconSelected: iconSelected
})
}
build() {
Tabs({ barPosition: this.currentBreakpoint === 'lg' ? BarPosition.Start : BarPosition.End }) {
TabContent() {
Home()
}
.tabBar(this.tabItem(0, $r('app.string.tabBar1'), $r('app.media.ic_home_normal'), $r('app.media.ic_home_actived')))
TabContent() {
}
.tabBar(this.tabItem(1, $r('app.string.tabBar2'), $r('app.media.ic_app_normal'), $r('app.media.ic_app_actived')))
TabContent() {
}
.tabBar(this.tabItem(2, $r('app.string.tabBar3'), $r('app.media.ic_game_normal'), $r('app.media.ic_mine_actived')))
TabContent() {
}
.tabBar(this.tabItem(3, $r('app.string.tabBar4'), $r('app.media.ic_search_normal'), $r('app.media.ic_search_actived')))
TabContent() {
}
.tabBar(this.tabItem(4, $r('app.string.tabBar4'), $r('app.media.ic_mine_normal'), $r('app.media.ic_mine_actived')))
}
.barWidth(this.currentBreakpoint === 'lg' ? 96 : '100%')
.barHeight(this.currentBreakpoint === 'lg' ? '60%' : 56)
.vertical(this.currentBreakpoint === 'lg')
.onChange(this.onTabChange)
.backgroundColor('#F1F3F5')
}
}
通过栅格实现标题栏和搜索栏:在sm和md断点下分两行显示,在lg断点下单行显示,[源码参考]。
/*
* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
@Component
export default struct IndexHeader {
@StorageProp('currentBreakpoint') currentBreakpoint: string = 'md'
@Builder searchBar() {
Stack({alignContent: Alignment.End}) {
TextInput({ placeholder: $r('app.string.search') })
.placeholderColor('#FF000000')
.placeholderFont({ size: 16, weight: 400 })
.textAlign(TextAlign.Start)
.caretColor('#FF000000')
.width('100%')
.height(40)
.fontWeight(400)
.padding({ top: 9, bottom: 9 })
.fontSize(16)
.backgroundColor(Color.White)
Image($r('app.media.ic_public_search'))
.width(16)
.height(16)
.margin({ right: 20 })
}.height(56).width('100%')
}
@Builder titleBar() {
Text($r('app.string.tabBar1'))
.fontSize(24)
.fontWeight(500)
.fontColor('#18181A')
.textAlign(TextAlign.Start)
.height(56)
.width('100%')
}
build() {
GridRow() {
GridCol({ span: { xs: 12, lg: 8 } }) {
this.titleBar()
}
GridCol({ span: { xs: 12, lg: 4 } }) {
this.searchBar()
}
}
.width('100%')
.height(this.currentBreakpoint === 'lg' ? 56 : 112)
.padding({ left: 12, right: 12 })
}
}
2、在sm和md断点下,标题栏和搜索栏占满12列,此时会自动换行显示。
3、在lg断点下,标题栏占8列而搜索栏占4列,此时标题栏和搜索栏在同一行中显示。
实现不同断点下的运营横幅:通过Swiper组件的displayCount属性,sm断点下显示一张图片,md断点下显示两张图片,lg断点下显示三张图片。
通过将justifyContent参数配置为FlexAlign.SpaceEvenly实现均分布局:在不同的断点下,快捷入口的5个图标始终均匀排布。
通过List组件能力,实现延伸能力场景:随着可用显示区域的增加,精品应用中显示的图标数量也不断增加,[源码参考]。
/*
* Copyright (c) 2022-2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { AppItem, MyAppSource } from '../model/HomeDataType'
@Component
export default struct IndexApps {
private title: Resource
@StorageProp('currentBreakpoint') currentBreakpoint: string = 'md'
private apps: AppItem[] = []
@Builder
appListHeader() {
Row() {
Text(this.title)
.width(100)
.fontSize(16)
.textAlign(TextAlign.Start)
.fontWeight(500)
Blank()
Text($r('app.string.more'))
.fontSize(14)
.textAlign(TextAlign.End)
.fontWeight(400)
.margin({ right: 2 })
Image($r('app.media.ic_public_arrow_right'))
.width(12)
.height(18)
.opacity(0.9)
.objectFit(ImageFit.Fill)
}
.margin({ bottom: 9, top: 9 })
.width('100%')
.alignItems(VerticalAlign.Bottom)
}
@Builder
appListItem(app:AppItem) {
Column() {
Image(app.image)
.width(this.currentBreakpoint === 'lg' ? 80 : 56)
.height(this.currentBreakpoint === 'lg' ? 80 : 56)
.margin({ bottom: 8 })
Text(app.title)
.width(this.currentBreakpoint === 'lg' ? 80 : 56)
.height(16)
.fontSize(12)
.textAlign(TextAlign.Center)
.fontColor('#18181A')
.margin({ bottom: 8 })
Text($r('app.string.install'))
.width(this.currentBreakpoint === 'lg' ? 80 : 56)
.height(28)
.fontColor('#0A59F7')
.textAlign(TextAlign.Center)
.borderRadius(this.currentBreakpoint === 'lg' ? 26 : 20)
.fontWeight(500)
.fontSize(12)
.padding({ top: 6, bottom: 6, left: 8, right: 8 })
.backgroundColor('rgba(0,0,0,0.05)')
}
}
build() {
Column() {
this.appListHeader()
List({ space: this.currentBreakpoint === 'lg' ? 44 : 20}) {
LazyForEach(new MyAppSource(this.apps), app = > {
ListItem() {
this.appListItem(app)
}
}, app = > app.id)
}
.width('100%')
.height(this.currentBreakpoint === 'lg' ? 140 : 120)
.listDirection(Axis.Horizontal)
}
.width('100%')
.height(this.currentBreakpoint === 'lg' ? 188 : 164)
.padding({ bottom: 8, left: 12, right: 12 })
}
}
`HarmonyOS与OpenHarmony鸿蒙文档籽料:mau123789是v直接拿`
通过将上述各页面在List() {}中引用组件后,可实现英国威廉希尔公司网站 的组件整合渲染,即可完成整体页面开发。
审核编辑 黄宇
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