harmony 鸿蒙@ohos.brightness (Screen Brightness)
@ohos.brightness (Screen Brightness)
The brightness module provides an API for setting the screen brightness.
NOTE
The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
The APIs provided by this module are system APIs.
Modules to Import
import brightness from '@ohos.brightness';
brightness.setValue
setValue(value: number): void
Sets the screen brightness.
System API: This is a system API.
System capability: SystemCapability.PowerManager.DisplayPowerManager
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| value | number | Yes | Brightness value. The value ranges from 0 to 255. |
Error codes
For details about the error codes, see Screen Brightness Error Codes.
| ID | Error Message |
|---|---|
| 4700101 | If connecting to the service failed. |
Example
try {
brightness.setValue(128);
} catch(err) {
console.error('set brightness failed, err: ' + err);
}
你可能感兴趣的鸿蒙文章
harmony 鸿蒙System Common Events (To Be Deprecated Soon)
harmony 鸿蒙System Common Events
harmony 鸿蒙API Reference Document Description
harmony 鸿蒙Enterprise Device Management Overview (for System Applications Only)
harmony 鸿蒙BundleStatusCallback
harmony 鸿蒙@ohos.bundle.innerBundleManager (innerBundleManager)
harmony 鸿蒙@ohos.distributedBundle (Distributed Bundle Management)
harmony 鸿蒙@ohos.bundle (Bundle)
harmony 鸿蒙@ohos.enterprise.EnterpriseAdminExtensionAbility (EnterpriseAdminExtensionAbility)
- 所属分类： 后端技术
- 本文标签：
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
8、 openharmony