mini-ar-demo/miniprogram/components/ar-tracker/ar-tracker.js

// components/ar-tracker/ar-tracker.ts
Component({

  /**
   * 组件的属性列表
   */
  properties: {

  },

  /**
   * 组件的初始数据
   */
  data: {

  },

  /**
   * 组件的方法列表
   */
  methods: {
    handleReady() {
      console.log('handleReady')
    },
    handleARReady() {
      console.log('handleARReady')
    },
    handleLog(log) {
      console.log('log', log)
    },
    handleARTrackerState({
      detail
    }) {
      // 事件的值即为`ARTracker`实例
      const tracker = detail.value;
      // 获取当前状态和错误信息
      const {
        state,
        errorMessage
      } = tracker;
      if (state == 2) {

        this.triggerEvent('scan', 1)
      }
    },
    handleARTrackerState1({
      detail
    }) {
      // 事件的值即为`ARTracker`实例
      const tracker = detail.value;
      // 获取当前状态和错误信息
      const {
        state,
        errorMessage
      } = tracker;
      if (state == 2) {
        wx.showToast({
          title: "2"
        })
        this.triggerEvent('scan', 2)
      }
    },
    handleARTrackerState2({
      detail
    }) {
      // 事件的值即为`ARTracker`实例
      const tracker = detail.value;
      // 获取当前状态和错误信息
      const {
        state,
        errorMessage
      } = tracker;
      if (state == 2) {
        wx.showToast({
          title: "3"
        })
        this.triggerEvent('scan', 3)
      }
    },
    handleAssetsProgress() {},
    handleAssetsLoaded() {},
  }
})