# Context

> **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.


Provides the context for running code, including **applicationInfo** and **resourceManager**.

## Modules to Import

```
import AbilityContext from '@ohos.application.Ability';
```

## Usage


You must extend **AbilityContext** to implement this module.


## Attributes

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

| Name | Type | Readable | Writable | Description |
| -------- | -------- | -------- | -------- | -------- |
| resourceManager | ResourceManager | Yes | No | **ResourceManager** object. |
| applicationInfo | ApplicationInfo | Yes | No | Information about the application. |
| cacheDir | string | Yes | No | Cache directory of the application on the internal storage. |
| tempDir | string | Yes | No | Temporary file directory of the application. |
| filesDir | string | Yes | No | File directory of the application on the internal storage. |
| databaseDir | string | Yes | No | Storage directory of local data. |
| storageDir | string | Yes | No | Storage directory of lightweight data. |
| bundleCodeDir | string | Yes | No | Application installation path. |
| distributedFilesDir | string | Yes | No | Storage directory of distributed application data files. |
| eventHub | [EventHub](js-apis-eventhub.md) | Yes | No | Event hub information. |
| area | [AreaMode](#areamode) | Yes | Yes | Area in which the file to be access is located. |


## Context.createBundleContext

createBundleContext(bundleName: string): Context;

Creates an application context.

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

**Parameters**

| Name | Type | Mandatory | Description |
| -------- | -------- | -------- | -------- |
| bundleName | string | Yes | Application bundle name. |

**Return value**

| Type | Description |
| -------- | -------- |
| Context | Context of the application created. |

**Example**
    
  ```js
  import AbilityContext from '@ohos.application.Ability'
      class MainAbility extends AbilityContext {
          onWindowStageCreate(windowStage) {
              let test = "com.example.test";
              let context = this.context.createBundleContext(test);
      }
}

  ```


## Context.getApplicationContext

getApplicationContext(): ApplicationContext;

Obtains the context of this application.

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

**Return value**

| Type | Description |
| -------- | -------- |
| ApplicationContext | Application context obtained. |

**Example**
    
  ```js
  // This part is mandatory.
  let applicationContext = this.context.getApplicationContext();
  ```


## AreaMode

 Defines the area where the file to be access is located. Each area has its own content. 

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

| Name            | Value | Description |
| --------------- | ---- | --------------- |
| EL1             | 0    | Device-level encryption area. |
| EL2             | 1    | User credential encryption area. The default value is **EL2**. |