harmony 鸿蒙@ohos.uiAppearance (UI Appearance)
@ohos.uiAppearance (UI Appearance)
The uiAppearance module provides basic capabilities for managing the system appearance. It allows for color mode configuration currently, and will introduce more features over time.
NOTE
The APIs of this module are supported since API version 10. Updates 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 uiAppearance from '@ohos.uiAppearance'
DarkMode
Enumerates the color modes.
System capability: SystemCapability.ArkUI.UiAppearance
|Name|Value|Description| |–|–|–| |ALWAYS_DARK|0|The system is always in dark mode.| |ALWAYS_LIGHT|1|The system is always in light mode.|
uiAppearance.setDarkMode
setDarkMode(mode: DarkMode, callback: AsyncCallback<void>): void
Sets the system color mode. This API uses an asynchronous callback to return the result.
Permission required: ohos.permission.UPDATE_CONFIGURATION
System capability: SystemCapability.ArkUI.UiAppearance
Parameters
|Name|Type|Mandatory|Description| |–|–|–|–| |mode|DarkMode|Yes|Color mode to set.| |callback|AsyncCallback<void>|Yes|Callback used to return the result.|
Error codes
For details about the error codes, see UI Appearance Error Codes.
|ID|Error Message| |–|–| |500001|Internal error.|
Example
import uiAppearance from '@ohos.uiAppearance'
import { BusinessError } from '@ohos.base';
try {
uiAppearance.setDarkMode(uiAppearance.DarkMode.ALWAYS_DARK, (error) => {
if (error) {
console.error('Set dark-mode failed, ' + error.message);
} else {
console.info('Set dark-mode successfully.');
}
})
} catch (error) {
let message = (error as BusinessError).message;
console.error('Set dark-mode failed, ' + message);
}
uiAppearance.setDarkMode
setDarkMode(mode: DarkMode): Promise<void>;
Sets the system color mode. This API uses a promise to return the result.
Permission required: ohos.permission.UPDATE_CONFIGURATION
System capability: SystemCapability.ArkUI.UiAppearance
Parameters
|Name|Type|Mandatory|Description| |–|–|–|–| |mode|DarkMode|Yes|Color mode to set.|
Return value
Type | Description |
---|---|
Promise<void> | Promise that returns no value. |
Error codes
For details about the error codes, see UI Appearance Error Codes.
|ID|Error Message| |–|–| |500001|Internal error.|
Example
import uiAppearance from '@ohos.uiAppearance'
import { BusinessError } from '@ohos.base';
try {
uiAppearance.setDarkMode(uiAppearance.DarkMode.ALWAYS_DARK).then(() => {
console.info('Set dark-mode successfully.');
}).catch((error:Error) => {
console.error('Set dark-mode failed, ' + error.message);
});
} catch (error) {
let message = (error as BusinessError).message;
console.error('Set dark-mode failed, ' + message);
}
uiAppearance.getDarkMode
getDarkMode(): DarkMode;
Obtains the system color mode.
Permission required: ohos.permission.UPDATE_CONFIGURATION
System capability: SystemCapability.ArkUI.UiAppearance
Return value
|Type|Description| |–|–| |DarkMode|Color mode obtained.|
Error codes
For details about the error codes, see UI Appearance Error Codes.
|ID|Error Message| |–|–| |500001|Internal error.|
Example
import uiAppearance from '@ohos.uiAppearance'
import { BusinessError } from '@ohos.base';
try {
let darkMode = uiAppearance.getDarkMode();
console.info('Get dark-mode ' + darkMode);
} catch (error) {
let message = (error as BusinessError).message;
console.error('Get dark-mode failed, ' + message);
}
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