加载离线地图无法拖拉缩放

https://blog.csdn.net/Zwain_M/article/details/115548665?spm=1001.2101.3001.6650.2&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-2.no_search_link&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-2.no_search_link

按照上面链接配置，加载离线地图无法拖拉缩放等操作，请问是否缺少配置，是否有其他需要修改的敌法

// 根据地图缩放比例获取当前地图比例尺
    const getMapScale = (zoom: number): number => {
      let scale = 0;
      switch (zoom) {
        case 1:
          scale = 10000000;
          break;
        case 2:
          scale = 5000000;
          break;
        case 3:
          scale = 2000000;
          break;
        case 4:
          scale = 1000000;
          break;
        case 5:
          scale = 500000;
          break;
        case 6:
          scale = 200000;
          break;
        case 7:
          scale = 100000;
          break;
        case 8:
          scale = 50000;
          break;
        case 9:
          scale = 25000;
          break;
        case 10:
          scale = 20000;
          break;
        case 11:
          scale = 10000;
          break;
        case 12:
          scale = 5000;
          break;
        case 13:
          scale = 2000;
          break;
        case 14:
          scale = 1000;
          break;
        case 15:
          scale = 500;
          break;
        case 16:
          scale = 200;
          break;
        case 17:
          scale = 100;
          break;
        case 18:
          scale = 50;
          break;
        case 19:
          scale = 20;
          break;
        default:
          scale = 0;
          break;
      }
      return scale;
    };