| type | string | Yes | Type of event to subscribe to. The value **periodReach** means the period reached event, which is triggered when the period of frame capturing reaches the value of the **frame** parameter.|
| frame | number | Yes | Period during which frame rendering is listened. The value must be greater than **0**. |
| frame | number | Yes | Period during which frame capturing is listened. The value must be greater than **0**. |
| callback | (position: number) => {} | Yes | Callback invoked when the event is triggered. |
> The initial APIs of this module are supported since API version 9. API version 9 is a canary release for trial use. The APIs of this version may be unstable.
Obtains the fault information about the current process. This API uses a callback to return the fault information array obtained, which contains a maximum of 10 pieces of fault information.
Obtains the fault information about the current process. This API uses an asynchronous callback to return the fault information array obtained, which contains a maximum of 10 pieces of fault information.
> The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## Constraints
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@@ -17,7 +18,7 @@ import featureAbility from '@ohos.ability.featureAbility'
Switches a given mission to the foreground, with the startup parameters for the switch specified, such as the window mode and device ID. This API uses an asynchronous callback to return the result.
Switches a given mission to the foreground, with the startup parameters for the switching specified. This API uses an asynchronous callback to return the result.
Switches a given mission to the foreground, with the startup parameters for the switch specified, such as the window mode and device ID. This API uses a promise to return the result.
Switches a given mission to the foreground, with the startup parameters for the switching specified. This API uses a promise to return the result.
> - The APIs of this module are no longer maintained since API version 7. It is recommended that you use [`@ohos.batteryInfo`](js-apis-battery-info.md) instead.
>
> - The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
| type | [WindowType](#windowtype) | Yes | Yes | Type of the system bar whose properties are changed. Only the navigation bar and status bar are supported.|
| type | [WindowType](#windowtype) | Yes | Yes | Type of the system bar whose properties are changed. Only the status bar and navigation bar are supported.|
| isEnable | boolean | Yes | Yes | Whether the system bar is displayed. |
| region | [Rect](#rect) | Yes | Yes | Current position and size of the system bar. |
| backgroundColor | string | Yes | Yes | Background color of the system bar. The value is a hexadecimal RGB or aRGB color value and is case insensitive, for example, **\#00FF00** or **\#FF00FF00**.|
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@@ -488,7 +488,7 @@ Obtains the top window of the current application. This API uses a promise to re
| isLayoutFullScreen | boolean | Yes | Whether the window layout is in full-screen mode, in which the status bar and navigation bar are displayed.|
| isLayoutFullScreen | boolean | Yes | Whether to enable the full-screen mode for the window layout, in which the status bar and navigation bar are displayed.|
| callback | AsyncCallback<void> | Yes | Callback used to return the execution result. |
**Example**
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| isLayoutFullScreen | boolean | Yes | Whether the window layout is in full-screen mode, in which the status bar and navigation bar are displayed.|
| isLayoutFullScreen | boolean | Yes | Whether to enable the full-screen mode for the window layout, in which the status bar and navigation bar are displayed.|