HarmonyOS 如何获取控件的组件标识属性？

Question

如题：HarmonyOS 如何获取控件的组件标识属性？

Answer 1

可以通过getInspectorByKey9+getInspectorByKey(id: string): string来获取指定id的组件的所有属性，不包括子组件信息。参考示例代码如下：

// xxx.ets
import { IntentionCode } from '@ohos.multimodalInput.intentionCode'

class Utils {
  static rect_left: number
  static rect_top: number
  static rect_right: number
  static rect_bottom: number
  static rect_value: Record<string, number>

  //获取组件所占矩形区域坐标
  static getComponentRect(key:string):Record<string, number> {
    let strJson = getInspectorByKey(key)
    let obj:Record<string, string> = JSON.parse(strJson)
    console.info("[getInspectorByKey] current component obj is: " + JSON.stringify(obj))
    let rectInfo:string[] = JSON.parse('[' + obj.$rect + ']')
    console.info("[getInspectorByKey] rectInfo is: " + rectInfo)
    Utils.rect_left = JSON.parse('[' + rectInfo[0] + ']')[0]
    Utils.rect_top = JSON.parse('[' + rectInfo[0] + ']')[1]
    Utils.rect_right = JSON.parse('[' + rectInfo[1] + ']')[0]
    Utils.rect_bottom = JSON.parse('[' + rectInfo[1] + ']')[1]
    return Utils.rect_value = {
      "left": Utils.rect_left, "top": Utils.rect_top, "right": Utils.rect_right, "bottom": Utils.rect_bottom
    }
  }
}

@Entry
@Component
struct IdExample {
  @State text: string = ''

  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {

      Button() {
        Text('onKeyTab').fontSize(25).fontWeight(FontWeight.Bold)
      }.margin({ top: 20 }).backgroundColor('#0D9FFB')
      .onKeyEvent(() => {
        this.text = "onKeyTab"
      })

      Button() {
        Text('click to start').fontSize(25).fontWeight(FontWeight.Bold)
      }.margin({ top: 20 })
      .onClick(() => {
        console.info(getInspectorByKey("click"))
        console.info(JSON.stringify(getInspectorTree()))
        this.text = "Button 'click to start' is clicked"
        setTimeout(() => {
          sendEventByKey("longClick", 11, "") // 向id为"longClick"的组件发送长按事件
        }, 2000)
      }).id('click')

      Button() {
        Text('longClick').fontSize(25).fontWeight(FontWeight.Bold)
      }.margin({ top: 20 }).backgroundColor('#0D9FFB')
      .gesture(
        LongPressGesture().onActionEnd(() => {
          console.info('long clicked')
          this.text = "Button 'longClick' is longclicked"
          setTimeout(() => {
            let rect = Utils.getComponentRect('onTouch') // 获取id为"onTouch"组件的矩形区域坐标
            let touchPoint: TouchObject = {
              id: 1,
              type: TouchType.Down,
              x: rect.left + (rect.right - rect.left) / 2, // 相对于组件左上角的水平方向坐标
              y: rect.top + (rect.bottom - rect.top) / 2, // 相对于组件左上角的垂直方向坐标
              screenX: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的水平方向坐标，API10已废弃，采用windowX替代
              screenY: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的垂直方向坐标，API10已废弃，采用windowY替代
              windowX: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的水平方向坐标
              windowY: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的垂直方向坐标
              displayX: rect.left + (rect.right - rect.left) / 2, // 相对于设备屏幕左上角的水平方向坐标
              displayY: rect.left + (rect.right - rect.left) / 2, // 相对于设备屏幕左上角的垂直方向坐标
            }
            sendTouchEvent(touchPoint) // 发送触摸事件
            touchPoint.type = TouchType.Up
            sendTouchEvent(touchPoint) // 发送触摸事件
          }, 2000)
        })).id('longClick')

      Button() {
        Text('onTouch').fontSize(25).fontWeight(FontWeight.Bold)
      }.type(ButtonType.Capsule).margin({ top: 20 })
      .onClick(() => {
        console.info('onTouch is clicked')
        this.text = "Button 'onTouch' is clicked"
        setTimeout(() => {
          let rect = Utils.getComponentRect('onMouse') // 获取id为"onMouse"组件的矩形区域坐标
          let mouseEvent: MouseEvent = {
            button: MouseButton.Left,
            action: MouseAction.Press,
            x: rect.left + (rect.right - rect.left) / 2, // 相对于组件左上角的水平方向坐标
            y: rect.top + (rect.bottom - rect.top) / 2, // 相对于组件左上角的垂直方向坐标
            screenX: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的水平方向坐标，API10已废弃，采用windowX替代
            screenY: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的垂直方向坐标，API10已废弃，采用windowY替代
            windowX: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的水平方向坐标
            windowY: rect.left + (rect.right - rect.left) / 2, // 相对于应用窗口左上角的垂直方向坐标
            displayX: rect.left + (rect.right - rect.left) / 2, // 相对于设备屏幕左上角的水平方向坐标
            displayY: rect.left + (rect.right - rect.left) / 2, // 相对于设备屏幕左上角的垂直方向坐标
            stopPropagation: () => {
            },
            timestamp: 1,
            target: {
              area: {
                width: 1,
                height: 1,
                position: {
                  x: 1,
                  y: 1
                },
                globalPosition: {
                  x: 1,
                  y: 1
                }
              }
            },
            source: SourceType.Mouse,
            pressure: 1,
            tiltX: 1,
            tiltY: 1,
            sourceTool: SourceTool.Unknown
          }
          sendMouseEvent(mouseEvent) // 发送鼠标事件
        }, 2000)
      }).id('onTouch')

      Button() {
        Text('onMouse').fontSize(25).fontWeight(FontWeight.Bold)
      }.margin({ top: 20 }).backgroundColor('#0D9FFB')
      .onMouse(() => {
        console.info('onMouse')
        this.text = "Button 'onMouse' in onMouse"
        setTimeout(() => {
          let keyEvent: KeyEvent = {
            type: KeyType.Down,
            keyCode: 2049,
            keyText: 'tab',
            keySource: 4,
            deviceId: 0,
            metaKey: 0,
            timestamp: 0,
            stopPropagation: () => {
            },
            intentionCode: IntentionCode.INTENTION_DOWN
          }
          sendKeyEvent(keyEvent) // 发送按键事件
        }, 2000)
      }).id('onMouse')

      Text(this.text).fontSize(25).padding(15)
    }
    .width('100%').height('100%')
  }
}