背景：
前几篇学习了元服务，后面几期就让我们开发简单的元服务吧，里面丰富的内容大家自己加，本期案例 仅供参考
先上本期效果图 ，里面图片自行替换
效果图1完整代码案例如下：
import { authentication } from '@kit.AccountKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
@Entry
@ComponentV2
struct Index {
readonly PAGE_FULL: string = "100%";
readonly PRE_96: string = "96%";
readonly SIZE_40: number = 40;
readonly SIZE_30: number = 30;
readonly SIZE_20: number = 20;
readonly SIZE_16: number = 16;
readonly SIZE_8: number = 8;
readonly SIZE_4: number = 4;
@Local origin: string = '山园小梅・其一'
@Local author: string = '林逋'
@Local content: string = '疏影横斜水清浅，暗香浮动月黄昏。'
@Local category: string = '古诗文 - 自然 - 梅花'
@Local status: number = 0
// {
// "content": "疏影横斜水清浅，暗香浮动月黄昏。",
// "author": "林逋",
// "origin": "山园小梅・其一",
// "category": "古诗文 - 自然 - 梅花"
// },
// {
// "content": "秋风生渭水，落叶满长安。",
// "author": "贾岛",
// "origin": "忆江上吴处士",
// "category": "古诗文 - 四季 - 秋天"
// },
// {
// "content": "等闲识得东风面，万紫千红总是春。",
// "author": "朱熹",
// "origin": "春日",
// "category": "古诗文 - 四季 - 春天"
// }
build() {
Column() {
Row({ space: this.SIZE_8 }) {
Image($r('app.media.miaoyujiyu'))
.width(this.SIZE_20)
.height(this.SIZE_20)
Text($r('app.string.EntryAbility_label'))
.fontSize(14)
.fontColor(Color.White)
}
.width(this.PAGE_FULL)
.borderRadius({ topLeft: 12, topRight: 12 })
.height(this.SIZE_40)
.linearGradient({
angle: 45,
colors: [['#51A3AF', 0.1], ['#468C9E', 1.0]]
})
.padding({
left: this.SIZE_16,
right: this.SIZE_16
})
Column({ space: this.SIZE_8 }) {
Text(this.origin)
.fontSize(18)
.fontWeight(FontWeight.Bolder)
.fontColor('#3F3F61')
Text(this.author)
.fontSize(14)
.fontWeight(FontWeight.Medium)
.fontColor('#9D9D9D')
Text(this.content)
.fontSize(16)
.fontColor('#454561')
Text(' ' + this.category)
.fontSize(16)
.fontColor('#999999').margin({ left: 20 })
Row({ space: 8 }) {
Text('刷新')
Image($r('app.media.uaxing'))
.width(this.SIZE_20)
.height(this.SIZE_20)
.fillColor(Color.White)
}
.borderWidth(1)
.margin({ top: 30 })
.borderRadius(12)
.borderColor('#51A3AF')
.width('30%')
.justifyContent(FlexAlign.Center)
.padding(5)
.onClick(() => {
// {
// "content": "疏影横斜水清浅，暗香浮动月黄昏。",
// "author": "林逋",
// "origin": "山园小梅・其一",
// "category": "古诗文 - 自然 - 梅花"
// },
// {
// "content": "秋风生渭水，落叶满长安。",
// "author": "贾岛",
// "origin": "忆江上吴处士",
// "category": "古诗文 - 四季 - 秋天"
// },
// {
// "content": "等闲识得东风面，万紫千红总是春。",
// "author": "朱熹",
// "origin": "春日",
// "category": "古诗文 - 四季 - 春天"
// }
// {
// "content": "明月松间照，清泉石上流。",
// "author": "王维",
// "origin": "山居秋暝",
// "category": "古诗文 - 自然 - 山水"
// }
console.log(`xxxthis.status ： ---` + this.status)
this.status = this.status + 1
if (this.status == 0) {
this.content = '疏影横斜水清浅，暗香浮动月黄昏。'
this.author = '林逋'
this.origin = '山园小梅・其一'
this.category = '古诗文 - 自然 - 梅花'
} else if (this.status == 1) {
this.content = '秋风生渭水，落叶满长安。'
this.author = '贾岛'
this.origin = '忆江上吴处士'
this.category = '古诗文 - 四季 - 秋天'
} else if (this.status == 2) {
this.content = '等闲识得东风面，万紫千红总是春。'
this.author = '朱熹'
this.origin = '春日'
this.category = '古诗文 - 四季 - 春天'
} else if (this.status == 3) {
this.content = '明月松间照，清泉石上流。'
this.author = '王维'
this.origin = '山居秋暝'
this.category = '古诗文 - 自然 - 山水'
this.status = -1
}
})
}
.width(this.PAGE_FULL)
.margin({ top: 10 })
.padding({ top: this.SIZE_4, bottom: this.SIZE_8 })
}
.width('86%')
.height('40%')
.borderWidth(1)
.borderRadius(12)
.margin({ left: 23, top: 70, right: 13 })
.borderColor('#51A3AF')
// .padding(16)
}
aboutToAppear() {
hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
this.loginWithHuaweiID();
}
/**
* Sample code for using HUAWEI ID to log in to atomic service.
* According to the Atomic Service Review Guide, when a atomic service has an account system,
* the option to log in with a HUAWEI ID must be provided.
* The following presets the atomic service to use the HUAWEI ID silent login function.
* To enable the atomic service to log in successfully using the HUAWEI ID, please refer
* to the HarmonyOS HUAWEI ID Access Guide to configure the client ID and fingerprint certificate.
*/
private loginWithHuaweiID() {
// Create a login request and set parameters
let loginRequest = new authentication.HuaweiIDProvider().createLoginWithHuaweiIDRequest();
// Whether to forcibly launch the HUAWEI ID login page when the user is not logged in with the HUAWEI ID
loginRequest.forceLogin = false;
// Execute login request
let controller = new authentication.AuthenticationController();
controller.executeRequest(loginRequest).then((data) => {
let loginWithHuaweiIDResponse = data as authentication.LoginWithHuaweiIDResponse;
let authCode = loginWithHuaweiIDResponse.data?.authorizationCode;
// Send authCode to the backend in exchange for unionID, session
}).catch((error: BusinessError) => {
hilog.error(0x0000, 'testTag', 'error: %{public}s', JSON.stringify(error));
if (error.code == authentication.AuthenticationErrorCode.ACCOUNT_NOT_LOGGED_IN) {
// HUAWEI ID is not logged in, it is recommended to jump to the login guide page
}
});
}
}