鸿蒙ArkUI学习实现一个轮播图、一个九宫格、一个图文列表。然后请求第三方HTTPAPI加载数据，使用了axios鸿蒙扩展库来实现第三方API数据加载并动态显示数据。

import {
    navigateTo
} from '../common/Page'

import axios, {
    AxiosResponse
} from '@ohos/axios'

interface IDataDataAttr {
    "title": string
}
interface IDataData {
    "img": string,
    "remark": string,
    "id": number,
    "title": string,
    "attr": IDataDataAttr
}
interface IData {
    "msg": string,
    "code": number,
    "data": IDataData[]
}

@Entry
@Component
export struct Index {

    @Provide data: IData = {
        "code": 0,
        "msg": "",
        "data": [{
            "title": "",
            "remark": "",
            "id": 0,
            "attr": {
                "title": ""
            },
            "img": ""
        }]
    }


    async dataApi() {
        try {
            const response: AxiosResponse = await axios.post < IData,
            AxiosResponse < IData > , null > ('https://php.diygw.com/article.php');
            this.data = response ? response.data : null
        } catch (error) {
            console.error(JSON.stringify(error));
        }
    }
    async onPageShow() {
        await this.dataApi()
    }

    async aboutToAppear() {
        await this.onPageShow()
    }

    build() {
        Column() {
            Navigation()
                .width('100%')
                .height('56vp')
                .backgroundColor('#07c160')
                .title(this.NavigationTitle())
                .titleMode(NavigationTitleMode.Mini)
                .align(Alignment.Center)
                .hideBackButton(true)
            Scroll() {
                Flex({
                    direction: FlexDirection.Column
                }) {
                    Flex() {
                        Swiper() {
                            Column() {
                                Image($r('app.media.pic1')).objectFit(ImageFit.Fill).width('100%').height('150vp')
                                Text('滑块一').width('100%').textAlign(TextAlign.Start).backgroundColor("rgba(0,0,0,0.28)").padding(10).position({
                                    y: 110
                                })
                            }
                            Column() {
                                Image($r('app.media.pic2')).objectFit(ImageFit.Fill).width('100%').height('150vp')
                                Text('滑块二').width('100%').textAlign(TextAlign.Start).backgroundColor("rgba(0,0,0,0.28)").padding(10).position({
                                    y: 110
                                })
                            }
                            Column() {
                                Image($r('app.media.pic3')).objectFit(ImageFit.Fill).width('100%').height('150vp')
                                Text('滑块三').width('100%').textAlign(TextAlign.Start).backgroundColor("rgba(0,0,0,0.28)").padding(10).position({
                                    y: 110
                                })
                            }
                        }.interval(3000).autoPlay(true).loop(true)
                        .indicatorStyle({
                            size: 30,
                            selectedColor: '#fff',
                            color: 'rgba(51, 51, 51, 0.39)'
                        })
                    }
                    Grid() {
                        ForEach(this.data.data, (item) => {
                            GridItem() {
                                Column({
                                    space: 5
                                }) {
                                    Image(item.img).objectFit(ImageFit.Fill).width('42vp').height('42vp')
                                    Text(item.title).fontSize('12fp').width('100%').textAlign(TextAlign.Center)
                                }.width('100%')
                            }
                        }, item => JSON.stringify(item));
                    }.padding({
                        top: '10vp',
                        bottom: '10vp'
                    }).height(Math.ceil(this.data.data.length / 3) * 71 + 20).columnsTemplate('1fr 1fr 1fr ')
                    .rowsGap(15).layoutDirection(GridDirection.Row)
                    List() {
                        ListItem() {
                            Flex({
                                direction: FlexDirection.Row,
                                alignItems: ItemAlign.Center,
                            }) {
                                Image($r('app.media.grid1')).flexShrink(0).objectFit(ImageFit.Fill).width('42vp').height('42vp')
                                Column() {
                                    Text('菜单一').fontSize('14fp').width('100%')
                                    Text('说明文字').fontSize('12fp').width('100%')
                                }.padding({
                                    left: 5
                                })
                                Image($r('app.media.ic_arrow')).flexShrink(0).objectFit(ImageFit.Contain).width('12vp').height('24vp')
                            }.width('100%')
                        }.padding(15).borderWidth({
                            bottom: 1
                        }).borderColor('#efefef')
                        ListItem() {
                            Flex({
                                direction: FlexDirection.Row,
                                alignItems: ItemAlign.Center,
                            }) {
                                Image($r('app.media.grid2')).flexShrink(0).objectFit(ImageFit.Fill).width('42vp').height('42vp')
                                Column() {
                                    Text('菜单二').fontSize('14fp').width('100%')
                                    Text('说明文字').fontSize('12fp').width('100%')
                                }.padding({
                                    left: 5
                                })
                                Image($r('app.media.ic_arrow')).flexShrink(0).objectFit(ImageFit.Contain).width('12vp').height('24vp')
                            }.width('100%')
                        }.padding(15).borderWidth({
                            bottom: 1
                        }).borderColor('#efefef')
                        ListItem() {
                            Flex({
                                direction: FlexDirection.Row,
                                alignItems: ItemAlign.Center,
                            }) {
                                Image($r('app.media.grid3')).flexShrink(0).objectFit(ImageFit.Fill).width('42vp').height('42vp')
                                Column() {
                                    Text('菜单三').fontSize('14fp').width('100%')
                                    Text('说明文字').fontSize('12fp').width('100%')
                                }.padding({
                                    left: 5
                                })
                                Image($r('app.media.ic_arrow')).flexShrink(0).objectFit(ImageFit.Contain).width('12vp').height('24vp')
                            }.width('100%')
                        }.padding(15).borderWidth({
                            bottom: 1
                        }).borderColor('#efefef')
                    }

                }.height('100%')
            }.height('100%').layoutWeight(1)
        }.alignItems(HorizontalAlign.Start).height('100%')
    }

    @Builder
    NavigationTitle() {
        Column() {
            Text('首页')
                .width('100%')
                .textAlign(TextAlign.Center)
                .height('28vp')
                .fontSize('20fp')
                .fontWeight(500)
                .fontColor('#fff')
        }
    }


}