# @ohos.app.ability.ConfigurationConstant (ConfigurationConstant)

The **ConfigurationConstant** module provides the enumerated values of the environment configuration information.

> **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

```ts
import ConfigurationConstant from '@ohos.app.ability.ConfigurationConstant';
```

## ConfigurationConstant.ColorMode

You can obtain the value of this constant by calling the **ConfigurationConstant.ColorMode** API.

**System capability**: SystemCapability.Ability.AbilityBase

| Name| Value| Description| 
| -------- | -------- | -------- |
| COLOR_MODE_NOT_SET | -1 | Unspecified color mode.| 
| COLOR_MODE_DARK | 0 | Dark mode.| 
| COLOR_MODE_LIGHT | 1 | Light mode.| 


## ConfigurationConstant.Direction<sup>9+</sup>

You can obtain the value of this constant by calling the **ConfigurationConstant.Direction** API.

**System capability**: SystemCapability.Ability.AbilityBase

| Name| Value| Description| 
| -------- | -------- | -------- |
| DIRECTION_NOT_SET | -1 | Unspecified direction.| 
| DIRECTION_VERTICAL | 0 | Vertical direction.| 
| DIRECTION_HORIZONTAL | 1 | Horizontal direction.| 


## ConfigurationConstant.ScreenDensity<sup>9+</sup>

You can obtain the value of this constant by calling the **ConfigurationConstant.ScreenDensity** API.

**System capability**: SystemCapability.Ability.AbilityBase

| Name| Value| Description| 
| -------- | -------- | -------- |
| SCREEN_DENSITY_NOT_SET | 0 | The screen pixel density is not set.| 
| SCREEN_DENSITY_SDPI | 120 | The pixel density of the screen is 'sdpi'.| 
| SCREEN_DENSITY_MDPI | 160 | The pixel density of the screen is 'mdpi'.| 
| SCREEN_DENSITY_LDPI | 240 | The pixel density of the screen is 'ldpi'.| 
| SCREEN_DENSITY_XLDPI | 320 | The pixel density of the screen is 'xldpi'.| 
| SCREEN_DENSITY_XXLDPI | 480 | The pixel density of the screen is 'xxldpi'.| 
| SCREEN_DENSITY_XXXLDPI | 640 | The pixel density of the screen is 'xxxldpi'.|