Using HiDebug APIs (ArkTS)

The HiDebug ArkTS APIs are independent. You can call them to obtain debugging information. For details about how to call the APIs, see the examples in @ohos.hidebug (HiDebug).

How to Develop

This topic describes how to call the HiDebug ArkTS API to obtain the system CPU usage.

1. Use DevEco Studio to create a project and select Empty Ability.

2. In the Project window, click entry > src > main > ets > pages to open the Index.ets file.

   Import the required dependencies.

   import { BusinessError } from '@kit.BasicServicesKit';
   import { hidebug, hilog } from '@kit.PerformanceAnalysisKit';
   

   Index.ets

   Define the test method.

   function testHiDebugArk () { // Implement the API as required.
     try {
       hilog.info(0x0000, 'testTag', `getSystemCpuUsage: ${hidebug.getSystemCpuUsage()}`);
     } catch (error) {
       hilog.info(0x0000, 'testTag', `error code: ${(error as BusinessError).code},
         error msg: ${(error as BusinessError).message}`);
     }
   }
   

   Index.ets

   Add a button to trigger the API call.

   Button('testHiDebugArk')
     .type(ButtonType.Capsule)
     .margin({
       top: 20
     })
     .backgroundColor('#0D9FFB')
     .width('60%')
     .height('5%')
     // Add a click event.
     .onClick(testHiDebugArk);
   

   Index.ets

3. Click Run, and then click the testHiDebugArk button on the device to trigger API calling.

4. At the bottom of DevEco Studio, switch to the Log tab and set the filter criteria to testTag to view related logs.

   10-22 15:46:04.587   19261-19261   A00000/com.sam...gtool/testTag  com.sampl...ebugtool  I     getSystemCpuUsage: 0.2878989952876323