# @ohos.app.ability.AutoFillExtensionAbility (AutoFillExtensionAbility)(系统接口)

AutoFillExtensionAbility模块提供账号和密码的自动填充和保存功能, 继承自[ExtensionAbility](js-apis-app-ability-extensionAbility.md)。

> **说明：**
> 
> 本模块首批接口从API version 11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。  
>
> 本模块接口仅可在Stage模型下使用。
>
> 本模块为系统接口。

## 导入模块

```ts
import { AutoFillExtensionAbility } from '@kit.AbilityKit';
```

## 属性

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**参数：**

| 名称 | 类型 | 可读 | 可写 | 说明 |
| -------- | -------- | -------- | -------- | -------- |
| context | [AutoFillExtensionContext](js-apis-inner-application-autoFillExtensionContext-sys.md)  | 是 | 否 | AutoFillExtension的上下文环境，继承自ExtensionContext。 |


## AutoFillExtensionAbility.onCreate

onCreate(): void

AutoFillExtensionAbility创建时触发回调函数。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**示例：**

```ts
import { AutoFillExtensionAbility } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onCreate() {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onCreate');
  }
}
```

## AutoFillExtensionAbility.onFillRequest

onFillRequest(session: UIExtensionContentSession, request: FillRequest, callback: FillRequestCallback): void

当发起自动填充请求或者生成密码时触发此回调函数。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**参数：**

| 参数名 | 类型 | 必填 | 说明 |
| -------- | -------- | -------- | -------- |
| session | [UIExtensionContentSession](js-apis-app-ability-uiExtensionContentSession.md)  | 是 | AutoFillExtensionAbility界面内容相关信息。 |
| request | [FillRequest](js-apis-inner-application-autoFillRequest-sys.md#fillrequest)  | 是 | 自动填充数据。 |
| callback | [FillRequestCallback](js-apis-inner-application-autoFillRequest-sys.md#fillrequestcallback)  | 是 | 自动填充请求回调。 |

**示例：**

```ts
import { AutoFillExtensionAbility, UIExtensionContentSession, autoFillManager, common } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onFillRequest(session: UIExtensionContentSession,
                request: autoFillManager.FillRequest,
                callback: autoFillManager.FillRequestCallback) {
    hilog.info(0x0000, 'testTag', '%{public}s', 'autofill onFillRequest');
    hilog.info(0x0000, 'testTag', 'fill requestCallback: %{public}s', JSON.stringify(callback));
    hilog.info(0x0000, 'testTag', 'get request viewData: ', JSON.stringify(request.viewData));
    try {
      let localStorageData: Record<string, UIExtensionContentSession | string | autoFillManager.FillRequestCallback |
      autoFillManager.ViewData | common.AutoFillExtensionContext> = {
        'session': session,
        'message': 'AutoFill Page',
        'fillCallback': callback,
        'viewData': request.viewData,
        'context': this.context,
      };
      let storage_fill = new LocalStorage(localStorageData);
      if (session) {
        session.loadContent('pages/SelectorList', storage_fill);
      } else {
        hilog.error(0x0000, 'testTag', '%{public}s', 'session is null');
      }
    } catch (err) {
      hilog.error(0x0000, 'testTag', '%{public}s', 'failed to load content');
    }
  }
}
```

## AutoFillExtensionAbility.onSaveRequest

onSaveRequest(session: UIExtensionContentSession, request: SaveRequest, callback: SaveRequestCallback): void

当发起自动保存或者手动保存时触发此回调函数。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**参数：**

| 参数名 | 类型 | 必填 | 说明 |
| -------- | -------- | -------- | -------- |
| session | [UIExtensionContentSession](js-apis-app-ability-uiExtensionContentSession.md)  | 是 | AutoFillExtensionAbility界面内容相关信息。 |
| request | [SaveRequest](js-apis-inner-application-autoFillRequest-sys.md#saverequest)  | 是 | 保存请求数据。 |
| callback | [SaveRequestCallback](js-apis-inner-application-autoFillRequest-sys.md#saverequestcallback)  | 是 | 保存请求回调。 |

**示例：**

```ts
import { AutoFillExtensionAbility, UIExtensionContentSession, autoFillManager, common } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onSaveRequest(session : UIExtensionContentSession,
                request : autoFillManager.SaveRequest,
                callback : autoFillManager.SaveRequestCallback) {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onSaveRequest');
    try {
      let localStorageData: Record<string, UIExtensionContentSession | string | autoFillManager.SaveRequestCallback |
      autoFillManager.ViewData | common.AutoFillExtensionContext> = {
        'session': session,
        'message': 'AutoFill Page',
        'fillCallback': callback,
        'viewData': request.viewData,
        'context': this.context,
      };
      let storage_save = new LocalStorage(localStorageData);
      if (session) {
        session.loadContent('pages/SavePage', storage_save);
      } else {
        hilog.error(0x0000, 'testTag', '%{public}s', 'session is null');
      }
    } catch (err) {
      hilog.error(0x0000, 'testTag', '%{public}s', 'failed to load content');
    }
  }
}
```

## AutoFillExtensionAbility.onUpdateRequest<sup>12+</sup>

onUpdateRequest(request: UpdateRequest): void

当收到更新请求时触发此回调函数。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**参数：**

| 参数名 | 类型 | 必填 | 说明 |
| -------- | -------- | -------- | -------- |
| request | [UpdateRequest](js-apis-inner-application-autoFillRequest-sys.md#updaterequest12)  | 是 | 更新请求。 |

**示例：**

```ts
import { AutoFillExtensionAbility, autoFillManager } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onUpdateRequest(request: autoFillManager.UpdateRequest) {
    hilog.info(0x0000, 'testTag', '%{public}s', 'on update request, view data is: %{public}s',
      JSON.stringify(request.viewData));
  }
}
```

## AutoFillExtensionAbility.onSessionDestroy

onSessionDestroy(session: UIExtensionContentSession): void

当AutoFillExtensionAbility界面内容对象销毁后调用。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**参数：**

| 参数名 | 类型 | 必填 | 说明 |
| -------- | -------- | -------- | -------- |
| session | [UIExtensionContentSession](js-apis-app-ability-uiExtensionContentSession.md) | 是 | AutoFillExtensionAbility界面内容相关信息。 |

**示例：**

```ts
import { AutoFillExtensionAbility, UIExtensionContentSession } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onSessionDestroy(session : UIExtensionContentSession) {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onSessionDestroy');
  }
}
```

## AutoFillExtensionAbility.onForeground

onForeground(): void

当AutoFillExtensionAbility从后台转到前台时触发。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**示例：**

```ts
import { AutoFillExtensionAbility } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onForeground() {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onForeground');
  }
}
```

## AutoFillExtensionAbility.onBackground

onBackground(): void

当AutoFillExtensionAbility从前台转到后台时触发。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**示例：**

```ts
import { AutoFillExtensionAbility } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onBackground() {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onBackground');
  }
}
```

## AutoFillExtensionAbility.onDestroy

onDestroy(): void | Promise&lt;void&gt;

在AutoFillExtensionAbility销毁时回调，执行资源清理等操作。回调结束直接返回，或者使用Promise异步回调。

**系统能力**：SystemCapability.Ability.AbilityRuntime.AbilityCore

**返回值：**

| 类型                                  | 说明                            |
| ------------------------------------- | ------------------------------- |
| void&nbsp;\|&nbsp;Promise&lt;void&gt; | 无返回值或者以Promise形式返回。 |

**示例：**

```ts
import { AutoFillExtensionAbility } from '@kit.AbilityKit';
import { hilog } from '@kit.PerformanceAnalysisKit';

class MyAutoFillExtensionAbility extends AutoFillExtensionAbility {
  onDestroy() {
    hilog.info(0x0000, 'testTag', '%{public}s', 'onDestroy');
  }
}
```