harmony 鸿蒙@ohos.app.ability.Configuration (Configuration)
@ohos.app.ability.Configuration (Configuration)
The Configuration module defines environment change information. Configuration is an interface definition and is used only for field declaration.
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.
Modules to Import
import Configuration from '@ohos.app.ability.Configuration';
Attributes
System capability: SystemCapability.Ability.AbilityBase
Name | Type | Readable | Writable | Description |
---|---|---|---|---|
language | string | Yes | Yes | Language of the application, for example, zh. |
colorMode | ColorMode | Yes | Yes | Color mode. The default value is COLOR_MODE_LIGHT. The options are as follows: - COLOR_MODE_NOT_SET: The color mode is not set. - COLOR_MODE_LIGHT: light mode. - COLOR_MODE_DARK: dark mode. |
direction | Direction | Yes | No | Screen orientation. The options are as follows: - DIRECTION_NOT_SET: The screen orientation is not set. - DIRECTION_HORIZONTAL: horizontal direction. - DIRECTION_VERTICAL: vertical direction. |
screenDensity | ScreenDensity | Yes | No | Pixel density of the screen. The options are as follows: - SCREEN_DENSITY_NOT_SET: The pixel density is not set. - SCREEN_DENSITY_SDPI: 120. - SCREEN_DENSITY_MDPI: 160. - SCREEN_DENSITY_LDPI: 240. - SCREEN_DENSITY_XLDPI: 320. - SCREEN_DENSITY_XXLDPI: 480. - SCREEN_DENSITY_XXXLDPI: 640. |
displayId | number | Yes | No | ID of the display where the application is located. |
hasPointerDevice | boolean | Yes | No | Whether a pointer device, such as a keyboard, mouse, or touchpad, is connected. |
For details about the fields, see the ohos.app.ability.Configuration.d.ts file.
Example
import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import EnvironmentCallback from '@ohos.app.ability.EnvironmentCallback';
import Want from '@ohos.app.ability.Want';
export default class EntryAbility extends UIAbility {
onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
let envCallback: EnvironmentCallback = {
onConfigurationUpdated(config) {
console.info(`envCallback onConfigurationUpdated success: ${JSON.stringify(config)}`);
let language = config.language;
let colorMode = config.colorMode;
let direction = config.direction;
let screenDensity = config.screenDensity;
let displayId = config.displayId;
let hasPointerDevice = config.hasPointerDevice;
}
onMemoryLevel(level){
console.log('onMemoryLevel level: ${level}');
}
};
try {
let applicationContext = this.context.getApplicationContext();
let callbackId = applicationContext.on('environment', envCallback);
console.log('callbackId: ${callbackId}');
} catch (paramError) {
console.error(`error: ${paramError.code}, ${paramError.message}`);
}
}
}
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