1e41f4b71Sopenharmony_ci# @ohos.app.ability.EmbeddedUIExtensionAbility (跨进程界面嵌入扩展能力)
2e41f4b71Sopenharmony_ci
3e41f4b71Sopenharmony_ciEmbeddedUIExtensionAbility为开发者提供了跨进程界面嵌入的能力,继承自[UIExtensionAbility](js-apis-app-ability-uiExtensionAbility.md)。目前EmbeddedUIExtensionAbility只能被同应用的UIAbility拉起,并且仅允许在拥有多进程权限的场景下使用。各类Ability的继承关系详见[继承关系说明](./js-apis-app-ability-ability.md#ability的继承关系说明)。
4e41f4b71Sopenharmony_ci
5e41f4b71Sopenharmony_ci> **说明:**
6e41f4b71Sopenharmony_ci>
7e41f4b71Sopenharmony_ci> 本模块首批接口从API version 12 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。
8e41f4b71Sopenharmony_ci>
9e41f4b71Sopenharmony_ci> 本模块接口仅可在Stage模型下使用。
10e41f4b71Sopenharmony_ci
11e41f4b71Sopenharmony_ci## 导入模块
12e41f4b71Sopenharmony_ci
13e41f4b71Sopenharmony_ci```ts
14e41f4b71Sopenharmony_ciimport { EmbeddedUIExtensionAbility } from '@kit.AbilityKit';
15e41f4b71Sopenharmony_ci```
16e41f4b71Sopenharmony_ci
17e41f4b71Sopenharmony_ci## 属性
18e41f4b71Sopenharmony_ci
19e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.AbilityCore
20e41f4b71Sopenharmony_ci
21e41f4b71Sopenharmony_ci| 名称 | 类型 | 只读 | 必填 | 说明 |
22e41f4b71Sopenharmony_ci| -------- | -------- | -------- | -------- | -------- |
23e41f4b71Sopenharmony_ci| context | [UIExtensionContext](js-apis-inner-application-uiExtensionContext.md) | 否 | 否 | 上下文。 |
24e41f4b71Sopenharmony_ci
25e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onCreate
26e41f4b71Sopenharmony_ci
27e41f4b71Sopenharmony_cionCreate(): void
28e41f4b71Sopenharmony_ci
29e41f4b71Sopenharmony_ciEmbeddedUIExtensionAbility创建时回调,执行初始化业务逻辑操作。
30e41f4b71Sopenharmony_ci
31e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.Core
32e41f4b71Sopenharmony_ci
33e41f4b71Sopenharmony_ci**示例:**
34e41f4b71Sopenharmony_ci
35e41f4b71Sopenharmony_ci  ```ts
36e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility } from '@kit.AbilityKit';
37e41f4b71Sopenharmony_ci
38e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
39e41f4b71Sopenharmony_ci
40e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
41e41f4b71Sopenharmony_ci    onCreate() {
42e41f4b71Sopenharmony_ci      console.info(TAG, `onCreate`);
43e41f4b71Sopenharmony_ci    }
44e41f4b71Sopenharmony_ci  }
45e41f4b71Sopenharmony_ci  ```
46e41f4b71Sopenharmony_ci
47e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onSessionCreate
48e41f4b71Sopenharmony_ci
49e41f4b71Sopenharmony_cionSessionCreate(want: Want, session: UIExtensionContentSession): void
50e41f4b71Sopenharmony_ci
51e41f4b71Sopenharmony_ci当EmbeddedUIExtensionAbility界面内容对象创建后调用。
52e41f4b71Sopenharmony_ci
53e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.Core
54e41f4b71Sopenharmony_ci
55e41f4b71Sopenharmony_ci**参数:**
56e41f4b71Sopenharmony_ci
57e41f4b71Sopenharmony_ci| 参数名 | 类型 | 必填 | 说明 |
58e41f4b71Sopenharmony_ci| -------- | -------- | -------- | -------- |
59e41f4b71Sopenharmony_ci| want | [Want](js-apis-app-ability-want.md) | 是 | 当前EmbeddedUIExtensionAbility的Want类型信息,包括Ability名称、Bundle名称等。 |
60e41f4b71Sopenharmony_ci| session | [UIExtensionContentSession](js-apis-app-ability-uiExtensionContentSession.md) | 是 | EmbeddedUIExtensionAbility界面内容相关信息。 |
61e41f4b71Sopenharmony_ci
62e41f4b71Sopenharmony_ci**示例:**
63e41f4b71Sopenharmony_ci
64e41f4b71Sopenharmony_ci  ```ts
65e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility, Want, UIExtensionContentSession } from '@kit.AbilityKit';
66e41f4b71Sopenharmony_ci
67e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
68e41f4b71Sopenharmony_ci
69e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
70e41f4b71Sopenharmony_ci    onSessionCreate(want: Want, session: UIExtensionContentSession) {
71e41f4b71Sopenharmony_ci      console.info(TAG, `onSessionCreate, want: ${JSON.stringify(want)}`);
72e41f4b71Sopenharmony_ci    }
73e41f4b71Sopenharmony_ci  }
74e41f4b71Sopenharmony_ci  ```
75e41f4b71Sopenharmony_ci
76e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onSessionDestroy
77e41f4b71Sopenharmony_ci
78e41f4b71Sopenharmony_cionSessionDestroy(session: UIExtensionContentSession): void
79e41f4b71Sopenharmony_ci
80e41f4b71Sopenharmony_ci当EmbeddedUIExtensionAbility界面内容对象销毁后调用。
81e41f4b71Sopenharmony_ci
82e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.Core
83e41f4b71Sopenharmony_ci
84e41f4b71Sopenharmony_ci**参数:**
85e41f4b71Sopenharmony_ci
86e41f4b71Sopenharmony_ci| 参数名 | 类型 | 必填 | 说明 |
87e41f4b71Sopenharmony_ci| -------- | -------- | -------- | -------- |
88e41f4b71Sopenharmony_ci| session | [UIExtensionContentSession](js-apis-app-ability-uiExtensionContentSession.md) | 是 | EmbeddedUIExtensionAbility界面内容相关信息。 |
89e41f4b71Sopenharmony_ci
90e41f4b71Sopenharmony_ci**示例:**
91e41f4b71Sopenharmony_ci
92e41f4b71Sopenharmony_ci  ```ts
93e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility, UIExtensionContentSession } from '@kit.AbilityKit';
94e41f4b71Sopenharmony_ci
95e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
96e41f4b71Sopenharmony_ci
97e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
98e41f4b71Sopenharmony_ci    onSessionDestroy(session: UIExtensionContentSession) {
99e41f4b71Sopenharmony_ci      console.info(TAG, `onSessionDestroy`);
100e41f4b71Sopenharmony_ci    }
101e41f4b71Sopenharmony_ci  }
102e41f4b71Sopenharmony_ci  ```
103e41f4b71Sopenharmony_ci
104e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onForeground
105e41f4b71Sopenharmony_ci
106e41f4b71Sopenharmony_cionForeground(): void
107e41f4b71Sopenharmony_ci
108e41f4b71Sopenharmony_ciEmbeddedUIExtensionAbility生命周期回调,当EmbeddedUIExtensionAbility从后台转到前台时触发。
109e41f4b71Sopenharmony_ci
110e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.AbilityCore
111e41f4b71Sopenharmony_ci
112e41f4b71Sopenharmony_ci**示例:**
113e41f4b71Sopenharmony_ci
114e41f4b71Sopenharmony_ci  ```ts
115e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility } from '@kit.AbilityKit';
116e41f4b71Sopenharmony_ci
117e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
118e41f4b71Sopenharmony_ci
119e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
120e41f4b71Sopenharmony_ci    onForeground() {
121e41f4b71Sopenharmony_ci      console.info(TAG, `onForeground`);
122e41f4b71Sopenharmony_ci    }
123e41f4b71Sopenharmony_ci  }
124e41f4b71Sopenharmony_ci  ```
125e41f4b71Sopenharmony_ci
126e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onBackground
127e41f4b71Sopenharmony_ci
128e41f4b71Sopenharmony_cionBackground(): void
129e41f4b71Sopenharmony_ci
130e41f4b71Sopenharmony_ciEmbeddedUIExtensionAbility生命周期回调,当EmbeddedUIExtensionAbility从前台转到后台时触发。
131e41f4b71Sopenharmony_ci
132e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.AbilityCore
133e41f4b71Sopenharmony_ci
134e41f4b71Sopenharmony_ci**示例:**
135e41f4b71Sopenharmony_ci
136e41f4b71Sopenharmony_ci  ```ts
137e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility } from '@kit.AbilityKit';
138e41f4b71Sopenharmony_ci
139e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
140e41f4b71Sopenharmony_ci
141e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
142e41f4b71Sopenharmony_ci    onBackground() {
143e41f4b71Sopenharmony_ci      console.info(TAG, `onBackground`);
144e41f4b71Sopenharmony_ci    }
145e41f4b71Sopenharmony_ci  }
146e41f4b71Sopenharmony_ci  ```
147e41f4b71Sopenharmony_ci
148e41f4b71Sopenharmony_ci## EmbeddedUIExtensionAbility.onDestroy
149e41f4b71Sopenharmony_ci
150e41f4b71Sopenharmony_cionDestroy(): void | Promise<void>
151e41f4b71Sopenharmony_ci
152e41f4b71Sopenharmony_ciEmbeddedUIExtensionAbility生命周期回调,在销毁时回调,执行资源清理等操作。
153e41f4b71Sopenharmony_ci在执行完onDestroy生命周期回调后,应用可能会退出,从而可能导致onDestroy中的异步函数未能正确执行,比如异步写入数据库。可以使用异步生命周期,以确保异步onDestroy完成后再继续后续的生命周期。
154e41f4b71Sopenharmony_ci
155e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Ability.AbilityRuntime.Core
156e41f4b71Sopenharmony_ci
157e41f4b71Sopenharmony_ci**返回值:**
158e41f4b71Sopenharmony_ci
159e41f4b71Sopenharmony_ci| 类型              | 说明                                                         |
160e41f4b71Sopenharmony_ci| ----------------- | ------------------------------------------------------------ |
161e41f4b71Sopenharmony_ci| void \| Promise\<void> | 无返回结果或无返回结果的Promise对象。       |
162e41f4b71Sopenharmony_ci
163e41f4b71Sopenharmony_ci**示例:**
164e41f4b71Sopenharmony_ci
165e41f4b71Sopenharmony_ci  ```ts
166e41f4b71Sopenharmony_ci  import { EmbeddedUIExtensionAbility } from '@kit.AbilityKit';
167e41f4b71Sopenharmony_ci
168e41f4b71Sopenharmony_ci  const TAG: string = '[testTag] EmbeddedUIExt';
169e41f4b71Sopenharmony_ci
170e41f4b71Sopenharmony_ci  export default class EmbeddedUIExt extends EmbeddedUIExtensionAbility {
171e41f4b71Sopenharmony_ci    onDestroy() {
172e41f4b71Sopenharmony_ci      console.info(TAG, `onDestroy`);
173e41f4b71Sopenharmony_ci    }
174e41f4b71Sopenharmony_ci  }
175e41f4b71Sopenharmony_ci  ```
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