HarmonyOS API：容器组件

// xxx.ets
@Entry
@Component
struct ListItemExample {
  private arr: number[] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

  build() {
    Column() {
      List({ space: 20, initialIndex: 0 }) {
        ForEach(this.arr, (item) => {
          ListItem() {
            Text('' + item)
              .width('100%').height(100).fontSize(16)
              .textAlign(TextAlign.Center).borderRadius(10).backgroundColor(0xFFFFFF)
          }
        }, item => item)
      }.width('90%')
    }.width('100%').height('100%').backgroundColor(0xDCDCDC).padding({ top: 5 })
  }
}

// xxx.ets
@Entry
@Component
struct ListItemExample2 {
  @State message: string = 'Hello World'

  @Builder itemEnd() {
    Row () {
      Button("Del").margin("4vp")
      Button("Set").margin("4vp")
    }.padding("4vp").justifyContent(FlexAlign.SpaceEvenly)
  }

  build() {
    Column() {
      List({space:10}) {
        ListItem() {
          Text(this.message) {
          }
          .width('100%')
          .height(100)
          .fontSize(16)
          .textAlign(TextAlign.Center)
          .borderRadius(10)
          .backgroundColor(0xFFFFFF)
        }
        .swipeAction({ end:this.itemEnd})

        ListItem() {
          Text(this.message) {
          }
          .width('100%')
          .height(100)
          .fontSize(16)
          .textAlign(TextAlign.Center)
          .borderRadius(10)
          .backgroundColor(0xFFFFFF)
        }
        .swipeAction({ start:this.itemEnd})
      }
    }
    .padding(10)
    .backgroundColor(0xDCDCDC)
    .width('100%')
    .height('100%')
  }
}

// xxx.ets
@Entry
@Component
struct ListItemGroupExample {
  private timetable: any = [
    {
      title:'星期一',
      projects:['语文', '数学', '英语']
    },
    {
      title:'星期二',
      projects:['物理', '化学', '生物']
    },
    {
      title:'星期三',
      projects:['历史', '地理', '政治']
    },
    {
      title:'星期四',
      projects:['美术', '音乐', '体育']
    }
  ]

  @Builder itemHead(text:string) {
    Text(text)
      .fontSize(20)
      .backgroundColor(0xAABBCC)
      .width("100%")
      .padding(10)
  }

  @Builder itemFoot(num:number) {
    Text('共' + num + "节课")
      .fontSize(16)
      .backgroundColor(0xAABBCC)
      .width("100%")
      .padding(5)
  }

  build() {
    Column() {
      List({ space: 20 }) {
        ForEach(this.timetable, (item) => {
          ListItemGroup({ header:this.itemHead(item.title), footer:this.itemFoot(item.projects.length) }) {
            ForEach(item.projects, (project) => {
              ListItem() {
                Text(project)
                  .width("100%").height(100).fontSize(20)
                  .textAlign(TextAlign.Center).backgroundColor(0xFFFFFF)
              }
            }, item => item)
          }
          .borderRadius(20)
          .divider({ strokeWidth: 1, color: 0xDCDCDC }) // 每行之间的分界线
        })
      }
      .width('90%')
      .sticky(StickyStyle.Header|StickyStyle.Footer)
    }.width('100%').height('100%').backgroundColor(0xDCDCDC).padding({ top: 5 })
  }
}

// Navigator.ets
@Entry
@Component
struct NavigatorExample {
  @State active: boolean = false
  @State Text: object = {name: 'news'}

  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Start, justifyContent: FlexAlign.SpaceBetween }) {
      Navigator({ target: 'pages/container/navigator/Detail', type: NavigationType.Push }) {
        Text('Go to ' + this.Text['name'] + ' page')
          .width('100%').textAlign(TextAlign.Center)
      }.params({ text: this.Text }) // 传参数到Detail页面

      Navigator() {
        Text('Back to previous page').width('100%').textAlign(TextAlign.Center)
      }.active(this.active)
      .onClick(() => {
        this.active = true
      })
    }.height(150).width(350).padding(35)
  }
}

// Detail.ets
import router from '@ohos.router'

@Entry
@Component
struct DetailExample {
  // 接收Navigator.ets的传参
  @State text: any = router.getParams()['text']

  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Start, justifyContent: FlexAlign.SpaceBetween }) {
      Navigator({ target: 'pages/container/navigator/Back', type: NavigationType.Push }) {
        Text('Go to back page').width('100%').height(20)
      }

      Text('This is ' + this.text['name'] + ' page')
        .width('100%').textAlign(TextAlign.Center)
    }
    .width('100%').height(200).padding({ left: 35, right: 35, top: 35 })
  }
}

// Back.ets
@Entry
@Component
struct BackExample {
  build() {
    Column() {
      Navigator({ target: 'pages/container/navigator/Navigator', type: NavigationType.Back }) {
        Text('Return to Navigator Page').width('100%').textAlign(TextAlign.Center)
      }
    }.width('100%').height(200).padding({ left: 35, right: 35, top: 35 })
  }
}