DriverExtensionContext

The DriverExtensionContext module provides the context of DriverExtensionAbility. It inherits from ExtensionContext.

The DriverExtensionContext module provides the operations that need to be actively initiated in the DriverExtensionAbility implementation.

NOTE

• The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.
• The APIs of this module can be used only in the stage model.

Modules to Import

import common from '@ohos.app.ability.common';

How to Use

Before using DriverExtensionContext, you need to obtain it through a DriverExtensionAbility child class instance.

  import DriverExtensionAbility, { DriverExtensionContext } from '@ohos.app.ability.DriverExtensionAbility';

  let context : DriverExtensionContext | undefined;
  class EntryAbility extends DriverExtensionAbility {
    onInit() {
      context = this.context; // Obtain DriverExtensionContext.
    }
  }

DriverExtensionContext.updateDriverState

updateDriverState(): void;

Updates the driver state. This interface is reserved and does not provide specific functionality currently.

System capability: SystemCapability.Driver.ExternalDevice

Example

if (context != null) {
  context.updateDriverState();
}