harmony 鸿蒙@ohos.arkui.performanceMonitor (Performance Monitor)
@ohos.arkui.performanceMonitor (Performance Monitor)
The performanceMonitor module provides APIs for performance monitoring indicators: response delay, completion delay, and frame loss rate.
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 performanceMonitor from '@ohos.arkui.performanceMonitor';
ActionType
Enumerates types of actions that trigger user scenes.
System capability: SystemCapability.ArkUI.ArkUI.Full
|Name|Value|Description| |–|–|–| |LAST_DOWN|0|Pressing against the screen.| |LAST_UP|1|Lifting a finger off the screen.| |FIRST_MOVE|2|First swiping on the screen.|
performanceMonitor.begin
begin(scene: string, startInputType: ActionType, note?: string): void
Starts a user scene.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
|Name|Type|Mandatory|Description| |–|–|–|–| |scene|string|Yes|User scene ID.| |startInputType|ActionType|Yes|Type of action that triggers the user scene.| |note|string|No|Important information about the user scene.|
Example
performanceMonitor.begin("LAUNCHER_APP_LAUNCH_FROM_ICON", performanceMonitor.ActionType.LAST_UP, "APP_START_BEGIN");
performanceMonitor.end
end(scene: string): void
Ends a user scene.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters |Name|Type|Mandatory|Description| |–|–|–|–| |scene|string|Yes|User scene ID, which corresponds to that in begin.|
Example
performanceMonitor.end("LAUNCHER_APP_LAUNCH_FROM_ICON");
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