let _locationChangeFn = (location) => {
        resolve(location);
        console.log('监听位置变化结束', new Date());
        wx.offLocationChange(_locationChangeFn)
      };
      console.log('开始监听位置变化', new Date());
      wx.startLocationUpdate({
        success: (res) => {
          wx.onLocationChange(_locationChangeFn);
        },
        fail: (err) => {
          reject(false);
        }
      })

这个监听位置位置真机测试有时候时间长达10s