组件标识

id为组件的唯一标识，在整个应用内唯一。本模块提供组件标识相关接口，可以获取指定id组件的属性，也提供向指定id组件发送事件的功能。

说明：

• 从API Version 8开始支持。后续版本如有新增内容，则采用上角标单独标记该内容的起始版本。

权限列表

无

属性

接口

getInspectorByKey

getInspectorByKey(id: string): string

获取指定id的组件的所有属性，不包括子组件信息。 此接口为系统接口。

• 参数

• 返回值

getInspectorTree

getInspectorTree(): string

获取组件树及组件属性。 此接口为系统接口。

• 返回值

sendEventByKey

sendEventByKey(id: string, action: number, params: string): boolean

给指定id的组件发送事件。 此接口为系统接口。

• 参数

• 返回值

sendTouchEvent

sendTouchEvent(event: TouchObject): boolean

发送触摸事件。 此接口为系统接口。

• 参数

• 返回值

sendKeyEvent

sendKeyEvent(event: KeyEvent): boolean

发送按键事件。 此接口为系统接口。

• 参数

• 返回值

sendMouseEvent

sendMouseEvent(event: MouseEvent): boolean

发送鼠标事件。 此接口为系统接口。

• 参数

• 返回值

示例

// xxx.ets
class Utils {
  static rect_left;
  static rect_top;
  static rect_right;
  static rect_bottom;
  static rect_value;

  static getComponentRect(key) {
    let strJson = getInspectorByKey(key);
    let obj = JSON.parse(strJson);
    console.info("[getInspectorByKey] current component obj is: " + JSON.stringify(obj));
    let rectInfo = JSON.parse('[' + obj.$rect + ']')
    console.info("[getInspectorByKey] rectInfo is: " + rectInfo);
    this.rect_left = JSON.parse('[' + rectInfo[0] + ']')[0]
    this.rect_top = JSON.parse('[' + rectInfo[0] + ']')[1]
    this.rect_right = JSON.parse('[' + rectInfo[1] + ']')[0]
    this.rect_bottom = JSON.parse('[' + rectInfo[1] + ']')[1]
    return this.rect_value = {
      "left": this.rect_left, "top": this.rect_top, "right": this.rect_right, "bottom": this.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(getInspectorTree())
        this.text = "Button 'click to start' is clicked"
        setTimeout(() => {
          sendEventByKey("longclick", 11, "")
        }, 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')
          let touchPoint: TouchObject = {
            id: 1,
            x: rect.left + (rect.right - rect.left) / 2,
            y: rect.top + (rect.bottom - rect.top) / 2,
            type: TouchType.Down,
            screenX: rect.left + (rect.right - rect.left) / 2,
            screenY: rect.left + (rect.right - rect.left) / 2,
          }
          sendTouchEvent(touchPoint)
          touchPoint.type = TouchType.Up
          sendTouchEvent(touchPoint)
        }, 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')
          let mouseEvent: MouseEvent = {
            button: MouseButton.Left,
            action: MouseAction.Press,
            x: rect.left + (rect.right - rect.left) / 2,
            y: rect.top + (rect.bottom - rect.top) / 2,
            screenX: rect.left + (rect.right - rect.left) / 2,
            screenY: rect.top + (rect.bottom - rect.top) / 2,
            timestamp: 1,
            target: {
              area: {
                width: 1,
                height: 1,
                position: {
                  x: 1,
                  y: 1
                },
                globalPosition: {
                  x: 1,
                  y: 1
                }
              }
            },
            source: SourceType.Mouse
          }
          sendMouseEvent(mouseEvent)
        }, 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
          }
          sendKeyEvent(keyEvent)
        }, 2000)
      }).id('onMouse')

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