# @ohos.app.ability.common (Context)

You can use this module to reference the ability public module class.

> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

## Modules to Import

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

## UIAbilityContext

type UIAbilityContext = _UIAbilityContext.default

Defines the level-2 module UIAbilityContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_UIAbilityContext.default](js-apis-inner-application-uiAbilityContext.md) | Level-2 module UIAbilityContext.|

## AbilityStageContext

type AbilityStageContext = _AbilityStageContext.default

Defines the level-2 module AbilityStageContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_AbilityStageContext.default](js-apis-inner-application-abilityStageContext.md) | Level-2 module AbilityStageContext.|

## ApplicationContext

type ApplicationContext = _ApplicationContext.default

Defines the level-2 module ApplicationContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_ApplicationContext.default](js-apis-inner-application-applicationContext.md) | Level-2 module ApplicationContext.|

## BaseContext

type BaseContext = _BaseContext.default

Defines the level-2 module BaseContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_BaseContext.default](js-apis-inner-application-baseContext.md) | Level-2 module BaseContext.|

## Context

type Context = _Context.default

Defines the level-2 module Context.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_Context.default](js-apis-inner-application-context.md) | Level-2 module Context.|

## ExtensionContext

type ExtensionContext = _ExtensionContext.default

Defines the level-2 module ExtensionContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_ExtensionContext.default](js-apis-inner-application-extensionContext.md) | Level-2 module ExtensionContext.|

## FormExtensionContext

type FormExtensionContext = _FormExtensionContext.default

Defines the level-2 module FormExtensionContext.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_FormExtensionContext.default](../apis-form-kit/js-apis-inner-application-formExtensionContext.md) | Level-2 module FormExtensionContext.|

## VpnExtensionContext<sup>11+<sup>

type VpnExtensionContext = _VpnExtensionContext.default

Defines the level-2 module VpnExtensionContext.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_VpnExtensionContext.default](../apis-network-kit/js-apis-inner-application-VpnExtensionContext.md) | Level-2 module VpnExtensionContext.|

## EventHub

type EventHub = _EventHub.default

Defines the level-2 module EventHub.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_EventHub.default](js-apis-inner-application-eventHub.md) | Level-2 module EventHub.|

## PacMap

type PacMap = _PacMap

Defines the level-2 module PacMap.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

| Type| Description|
| --- | --- |
| [_PacMap](js-apis-inner-ability-dataAbilityHelper.md#pacmap) | Level-2 module PacMap.|

## AbilityResult

type AbilityResult = _AbilityResult

Defines the level-2 module AbilityResult.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_AbilityResult](js-apis-inner-ability-abilityResult.md) | Level-2 module AbilityResult.|

## AbilityStartCallback<sup>11+<sup>

type AbilityStartCallback = _AbilityStartCallback

Defines the level-2 module AbilityStartCallback.

**Atomic service API**: This API can be used in atomic services since API version 11.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_AbilityStartCallback](js-apis-inner-application-abilityStartCallback.md) | Level-2 module AbilityStartCallback.|

## ConnectOptions

type ConnectOptions = _ConnectOptions

Defines the level-2 module ConnectOptions.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_ConnectOptions](js-apis-inner-ability-connectOptions.md) | Level-2 module ConnectOptions.|

## UIExtensionContext<sup>10+</sup>

type UIExtensionContext = _UIExtensionContext.default

Defines the level-2 module UIExtensionContext.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_UIExtensionContext.default](js-apis-inner-application-uiExtensionContext.md) | Level-2 module UIExtensionContext.|

## EmbeddableUIAbilityContext<sup>12+<sup>

type EmbeddableUIAbilityContext = _EmbeddableUIAbilityContext.default

Defines the level-2 module EmbeddableUIAbilityContext.

**Atomic service API**: This API can be used in atomic services since API version 12.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_EmbeddableUIAbilityContext.default](js-apis-inner-application-EmbeddableUIAbilityContext.md) | Level-2 module EmbeddableUIAbilityContext.|

## PhotoEditorExtensionContext<sup>12+<sup>

type PhotoEditorExtensionContext = _PhotoEditorExtensionContext.default

Defines the level-2 module PhotoEditorExtensionContext.

**System capability**: SystemCapability.Ability.AppExtension.PhotoEditorExtension

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_PhotoEditorExtensionContext.default](js-apis-app-ability-photoEditorExtensionContext.md) | Level-2 module PhotoEditorExtensionContext.|

## UIServiceProxy<sup>14+<sup>

type UIServiceProxy = _UIServiceProxy.default

Defines the level-2 module UIServiceProxy.

**Atomic service API**: This API can be used in atomic services since API version 14.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_UIServiceProxy.default](js-apis-inner-application-uiserviceproxy.md) | Level-2 module UIServiceProxy.|

## UIServiceExtensionConnectCallback<sup>14+<sup>

type UIServiceExtensionConnectCallback = _UIServiceExtensionConnectCallback.default

Defines the level-2 module UIServiceExtensionConnectCallback.

**Atomic service API**: This API can be used in atomic services since API version 14.

**System capability**: SystemCapability.Ability.AbilityRuntime.Core

**Model restriction**: This API can be used only in the stage model.

| Type| Description|
| --- | --- |
| [_UIServiceExtensionConnectCallback.default](js-apis-inner-application-uiServiceExtensionconnectcallback.md) | Level-2 module UIServiceExtensionConnectCallback.|


**Example**

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

let uiAbilityContext: common.UIAbilityContext;
let abilityStageContext: common.AbilityStageContext;
let applicationContext: common.ApplicationContext;
let baseContext: common.BaseContext;
let context: common.Context;
let uiExtensionContext: common.UIExtensionContext;
let extensionContext: common.ExtensionContext;
let formExtensionContext: common.FormExtensionContext;
let vpnExtensionContext: common.VpnExtensionContext;
let eventHub: common.EventHub;
let pacMap: common.PacMap;
let abilityResult: common.AbilityResult;
let abilityStartCallback: common.AbilityStartCallback;
let connectOptions: common.ConnectOptions;
let embeddableUIAbilityContext: common.EmbeddableUIAbilityContext;
let photoEditorExtensionContext: common.PhotoEditorExtensionContext;
let uiServiceProxy : common.UIServiceProxy;
let uiServiceExtensionConnectCallback : common.UIServiceExtensionConnectCallback;
```