鸿蒙 APP 性能优化与 Next 原生合规实战

2. 启动优化应用

entry/src/main/ets/entryability/EntryAbility.ets

import { StartupOptimizationUtil } from '../utils/StartupOptimizationUtil';

export default class EntryAbility extends UIAbility {
    onWindowStageCreate(windowStage: window.WindowStage): void {
        StartupOptimizationUtil.getInstance().init();
        this.optimizeStartupTime();
        windowStage.loadContent('pages/Index', (err, data) => {
            if (err.code) {
                hilog.error(0x0000, 'EntryAbility', 'Failed to load content. Cause: %{public}s', JSON.stringify(err) ?? '');
                return;
            }
            hilog.info(0x0000, 'EntryAbility', 'Succeeded in loading content. Data: %{public}s', JSON.stringify(data) ?? '');
        });
    }

    async optimizeStartupTime(): Promise<void> {
        await StartupOptimizationUtil.getInstance().optimizeStartupTime();
        const startupTime = await StartupOptimizationUtil.getInstance().getStartupTime();
        hilog.info(0x0000, 'EntryAbility', '应用启动时间：%{public}dms', startupTime);
    }
}

2.2 渲染优化实现

1. 渲染优化工具类

entry/src/main/ets/utils/RenderingOptimizationUtil.ets

import rendering from '@ohos.rendering';

export class RenderingOptimizationUtil {
    private static instance: RenderingOptimizationUtil | null = null;
    private renderingHelper: rendering.RenderingHelper | null = null;

    static getInstance(): RenderingOptimizationUtil {
        if (!RenderingOptimizationUtil.instance) {
            RenderingOptimizationUtil.instance = new RenderingOptimizationUtil();
        }
        return RenderingOptimizationUtil.instance;
    }

    async init(): Promise<void> {
        if (!this.renderingHelper) {
            this.renderingHelper = rendering.createRenderingHelper();
        }
    }

    async optimizeRenderingEfficiency(): Promise<void> {
        if (!this.renderingHelper) {
            return;
        }
        await this.renderingHelper.optimizeRenderingEfficiency();
    }

    async getRenderingFrameRate(): Promise<number> {
        if (!this.renderingHelper) {
            return 0;
        }
        const result = await this.renderingHelper.getRenderingFrameRate();
        return result;
    }
}

2. 渲染优化应用

entry/src/main/ets/pages/HomePage.ets

import { RenderingOptimizationUtil } from '../utils/RenderingOptimizationUtil';

@Entry
@Component
struct HomePage {
    @State recommendedProducts: Array<ProductModel> = [];
    @State renderingFrameRate: number = 0;

    build() {
        Column({ space: 16 }) {
            Text(`渲染帧率：${this.renderingFrameRate}fps`).fontSize(14).textColor('#666666');
            Text('推荐商品').fontSize(18).fontWeight(FontWeight.Bold).textColor('#000000');
            ListComponent({ data: this.recommendedProducts, renderItem: (item: ProductModel, index: number) => {
                Row({ space: 16 }) {
                    Image(item.imageUrl).width(60).height(60).objectFit(ImageFit.Contain);
                    Column({ space: 8 }) {
                        Text(item.name).fontSize(14).fontWeight(FontWeight.Bold).textColor('#000000');
                        Text(`¥${item.price}`).fontSize(16).fontWeight(FontWeight.Bold).textColor('#FF0000');
                    }.layoutWeight(1);
                    Text(item.category).fontSize(14).textColor('#666666');
                }.width('100%').height('auto').padding(16).backgroundColor('#FFFFFF').borderRadius(12);
            }, onItemClick: (item: ProductModel, index: number) => {
                router.pushUrl({ url: '/pages/ProductDetailPage', params: { id: item.id } });
            }});
        }.width('100%').height('100%').padding(16).backgroundColor('#F5F5F5');
    }

    aboutToAppear() {
        RenderingOptimizationUtil.getInstance().init();
        this.optimizeRenderingEfficiency();
        this.getRecommendedProducts();
    }

    async optimizeRenderingEfficiency(): Promise<void> {
        await RenderingOptimizationUtil.getInstance().optimizeRenderingEfficiency();
        this.renderingFrameRate = await RenderingOptimizationUtil.getInstance().getRenderingFrameRate();
    }
}

2.3 网络优化实现

1. 网络优化工具类

entry/src/main/ets/utils/NetworkOptimizationUtil.ets

import network from '@ohos.network';

export class NetworkOptimizationUtil {
    private static instance: NetworkOptimizationUtil | null = null;
    private networkHelper: network.NetworkHelper | null = null;

    static getInstance(): NetworkOptimizationUtil {
        if (!NetworkOptimizationUtil.instance) {
            NetworkOptimizationUtil.instance = new NetworkOptimizationUtil();
        }
        return NetworkOptimizationUtil.instance;
    }

    async init(): Promise<void> {
        if (!this.networkHelper) {
            this.networkHelper = network.createNetworkHelper();
        }
    }

    async optimizeNetworkRequestSpeed(): Promise<void> {
        if (!this.networkHelper) {
            return;
        }
        await this.networkHelper.optimizeNetworkRequestSpeed();
    }

    async getNetworkRequestSpeed(): Promise<number> {
        if (!this.networkHelper) {
            return 0;
        }
        const result = await this.networkHelper.getNetworkRequestSpeed();
        return result;
    }
}

2. 网络优化应用

entry/src/main/ets/services/ProductService.ets

import { NetworkOptimizationUtil } from '../utils/NetworkOptimizationUtil';

export class ProductService {
    async getProducts(): Promise<Array<ProductModel>> {
        await NetworkOptimizationUtil.getInstance().optimizeNetworkRequestSpeed();
        const requestSpeed = await NetworkOptimizationUtil.getInstance().getNetworkRequestSpeed();
        hilog.info(0x0000, 'ProductService', '网络请求速度：%{public}dms', requestSpeed);
        await new Promise(resolve => setTimeout(resolve, 1000));
        // 模拟返回数据
        return [] as Array<ProductModel>;
    }
}

三、Next 原生合规实战

3.1 合规目标

• 代码规范：符合鸿蒙开发规范；
• 权限合规：权限使用符合安全标准；
• 数据合规：数据处理符合隐私规范。

3.2 代码规范实现

entry/src/main/ets/utils/CodeStandardUtil.ets

import standard from '@ohos.standard';

export class CodeStandardUtil {
    private static instance: CodeStandardUtil | null = null;
    private standardHelper: standard.StandardHelper | null = null;

    static getInstance(): CodeStandardUtil {
        if (!CodeStandardUtil.instance) {
            CodeStandardUtil.instance = new CodeStandardUtil();
        }
        return CodeStandardUtil.instance;
    }

    async init(): Promise<void> {
        if (!this.standardHelper) {
            this.standardHelper = standard.createStandardHelper();
        }
    }

    async checkCodeStandard(): Promise<void> {
        if (!this.standardHelper) {
            return;
        }
        await this.standardHelper.checkCodeStandard();
    }

    async fixCodeStandardIssues(): Promise<void> {
        if (!this.standardHelper) {
            return;
        }
        await this.standardHelper.fixCodeStandardIssues();
    }
}

3.3 权限合规实现

entry/src/main/ets/utils/PermissionComplianceUtil.ets

import compliance from '@ohos.compliance';

export class PermissionComplianceUtil {
    private static instance: PermissionComplianceUtil | null = null;
    private complianceHelper: compliance.ComplianceHelper | null = null;

    static getInstance(): PermissionComplianceUtil {
        if (!PermissionComplianceUtil.instance) {
            PermissionComplianceUtil.instance = new PermissionComplianceUtil();
        }
        return PermissionComplianceUtil.instance;
    }

    async init(): Promise<void> {
        if (!this.complianceHelper) {
            this.complianceHelper = compliance.createComplianceHelper();
        }
    }

    async checkPermissionCompliance(): Promise<void> {
        if (!this.complianceHelper) {
            return;
        }
        await this.complianceHelper.checkPermissionCompliance();
    }

    async fixPermissionComplianceIssues(): Promise<void> {
        if (!this.complianceHelper) {
            return;
        }
        await this.complianceHelper.fixPermissionComplianceIssues();
    }
}

3.4 数据合规实现

entry/src/main/ets/utils/DataComplianceUtil.ets

import compliance from '@ohos.compliance';

export class DataComplianceUtil {
    private static instance: DataComplianceUtil | null = null;
    private complianceHelper: compliance.ComplianceHelper | null = null;

    static getInstance(): DataComplianceUtil {
        if (!DataComplianceUtil.instance) {
            DataComplianceUtil.instance = new DataComplianceUtil();
        }
        return DataComplianceUtil.instance;
    }

    async init(): Promise<void> {
        if (!this.complianceHelper) {
            this.complianceHelper = compliance.createComplianceHelper();
        }
    }

    async checkDataCompliance(): Promise<void> {
        if (!this.complianceHelper) {
            return;
        }
        await this.complianceHelper.checkDataCompliance();
    }

    async fixDataComplianceIssues(): Promise<void> {
        if (!this.complianceHelper) {
            return;
        }
        await this.complianceHelper.fixDataComplianceIssues();
    }
}

四、项目配置与部署

4.1 配置文件修改

在 entry/src/main/module.json5 中添加相关配置：

{
  "module": {
    "requestPermissions": [
      // ...
    ],
    "abilities": [
      // ...
    ],
    "widgets": [
      // ...
    ],
    "pages": [
      // ...
    ]
  }
}

4.2 项目部署

1. 编译项目：在 DevEco Studio 中点击 Build → Build HAP。
2. 部署到设备：将编译后的 HAP 文件部署至鸿蒙设备。
3. 测试验证：检查启动、渲染、网络优化效果及各项合规检查结果。

五、总结

本文完成了鸿蒙 APP 性能优化与 Next 原生合规的核心技术实现：

• 定义了性能优化架构（启动、渲染、网络、内存、电池）；
• 实现了基于 ArkTS 的工具类封装与能力调用；
• 完成了代码、权限、数据合规的检查与修复逻辑；
• 提供了项目配置与部署流程参考。

通过上述优化，可确保应用具备高性能表现并符合上架合规要求。