1# BaseContext 2 3BaseContext is an abstract class that specifies whether a child class Context is used for the stage model or FA model. It is the parent class for all types of Context. 4 5> **NOTE** 6> 7> The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version. 8 9## Modules to Import 10 11```ts 12import { common } from '@kit.AbilityKit'; 13``` 14 15## Attributes 16 17**Atomic service API**: This API can be used in atomic services since API version 11. 18 19**System capability**: SystemCapability.Ability.AbilityRuntime.Core 20 21| Name | Type | Read-Only | Optional | Description | 22| -------- | ------ | ---- | ---- | ------- | 23| stageMode | boolean | No | No | Whether the child class Context is used for the stage model.<br>**true**: used for the stage model.<br>**false**: used for the FA model.| 24 25**Example** 26 27Take the stage model as an example. You can access the **stageMode** field through UIAbilityContext. 28 29```ts 30import { UIAbility, AbilityConstant, Want } from '@kit.AbilityKit'; 31 32class EntryAbility extends UIAbility { 33 onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) { 34 // EntryAbility onCreate, isStageMode: true 35 console.info(`EntryAbility onCreate, isStageMode: ${this.context.stageMode}`); 36 } 37} 38``` 39