1e41f4b71Sopenharmony_ci# ExtensionContext 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ciExtensionContext是Extension的上下文环境,继承自Context。 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ciExtensionContext模块提供访问特定Extension的资源的能力,对于拓展的Extension,可直接将ExtensionContext作为上下文环境,或者定义一个继承自ExtensionContext的类型作为上下文环境。 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ci> **说明:** 8e41f4b71Sopenharmony_ci> 9e41f4b71Sopenharmony_ci> - 本模块首批接口从API version 9开始支持。后续版本的新增接口,采用上角标单独标记接口的起始版本。 10e41f4b71Sopenharmony_ci> - 本模块接口仅可在Stage模型下使用。 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci## 导入模块 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci```ts 15e41f4b71Sopenharmony_ciimport { common } from '@kit.AbilityKit'; 16e41f4b71Sopenharmony_ci``` 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci## 属性 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci**原子化服务API:** 从API version 11开始,该接口支持在原子化服务中使用。 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.Core 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci| 名称 | 类型 | 可读 | 可写 | 说明 | 25e41f4b71Sopenharmony_ci| -------- | -------- | -------- | -------- | -------- | 26e41f4b71Sopenharmony_ci| currentHapModuleInfo | [HapModuleInfo](js-apis-bundleManager-hapModuleInfo.md) | 是 | 否 | 所属Hap包的信息。<br>(详见SDK目录下的 `api\bundle\hapModuleInfo.d.ts`) | 27e41f4b71Sopenharmony_ci| config | [Configuration](js-apis-app-ability-configuration.md) | 是 | 否 | 所属Module的配置信息。<br>(详见SDK目录下的 `api\@ohos.app.ability.Configuration.d.ts`) | 28e41f4b71Sopenharmony_ci| extensionAbilityInfo | [ExtensionAbilityInfo](js-apis-bundleManager-extensionAbilityInfo.md) | 是 | 否 | 所属Extension的信息。<br>(详见SDK目录下的 `api\bundle\extensionAbilityInfo.d.ts`) | 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci## 使用场景 31e41f4b71Sopenharmony_ciExtensionContext主要用于查询所属Extension的信息、Module的配置信息以及HAP包的信息,开发者可根据自身业务需求使用对应的信息。 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci**示例:** 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci```ts 36e41f4b71Sopenharmony_ci// 单例对象 GlobalContext.ts 37e41f4b71Sopenharmony_ciexport class GlobalContext { 38e41f4b71Sopenharmony_ci private static instance: GlobalContext; 39e41f4b71Sopenharmony_ci private _objects = new Map<string, Object>(); 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci private constructor() { 42e41f4b71Sopenharmony_ci } 43e41f4b71Sopenharmony_ci 44e41f4b71Sopenharmony_ci public static getContext(): GlobalContext { 45e41f4b71Sopenharmony_ci if (!GlobalContext.instance) { 46e41f4b71Sopenharmony_ci GlobalContext.instance = new GlobalContext(); 47e41f4b71Sopenharmony_ci } 48e41f4b71Sopenharmony_ci return GlobalContext.instance; 49e41f4b71Sopenharmony_ci } 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ci getObject(value: string): Object | undefined { 52e41f4b71Sopenharmony_ci return this._objects.get(value); 53e41f4b71Sopenharmony_ci } 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci setObject(key: string, objectClass: Object): void { 56e41f4b71Sopenharmony_ci this._objects.set(key, objectClass); 57e41f4b71Sopenharmony_ci } 58e41f4b71Sopenharmony_ci} 59e41f4b71Sopenharmony_ci``` 60e41f4b71Sopenharmony_ci 61e41f4b71Sopenharmony_ci```ts 62e41f4b71Sopenharmony_ciimport { FormExtensionAbility, formBindingData } from '@kit.FormKit'; 63e41f4b71Sopenharmony_ciimport { Want } from '@kit.AbilityKit'; 64e41f4b71Sopenharmony_ciimport { GlobalContext } from '../GlobalContext'; 65e41f4b71Sopenharmony_ci 66e41f4b71Sopenharmony_ciexport default class MyFormExtensionAbility extends FormExtensionAbility { 67e41f4b71Sopenharmony_ci onAddForm(want: Want) { 68e41f4b71Sopenharmony_ci console.log(`FormExtensionAbility onAddForm, want: ${want.abilityName}`); 69e41f4b71Sopenharmony_ci let dataObj1: Record<string, string> = { 70e41f4b71Sopenharmony_ci 'temperature': '11c', 71e41f4b71Sopenharmony_ci 'time': '11:00' 72e41f4b71Sopenharmony_ci }; 73e41f4b71Sopenharmony_ci GlobalContext.getContext().setObject("ExtensionContext", this.context); 74e41f4b71Sopenharmony_ci let obj1: formBindingData.FormBindingData = formBindingData.createFormBindingData(dataObj1); 75e41f4b71Sopenharmony_ci return obj1; 76e41f4b71Sopenharmony_ci } 77e41f4b71Sopenharmony_ci}; 78e41f4b71Sopenharmony_ci``` 79