HarmonyOS ArkTS和h5的数据解析

可参考：https://developer.huawei.com/consumer/cn/codelabsPortal/carddetails/tutorials_NEXT-SelectContact

核心代码：

// JsBridge.ets
/**
 * 定义桥接类
 */
export default class JsBridge {
  /**
   * 将ArkTS侧数据传递给call方法
   */
  call = (func: string, params: string): void => {
    const paramsObject: ParamsItem = JSON.parse(params);
    let result: Promise<string> = new Promise((resolve) => resolve(''));
    switch (func) {
      case 'chooseContact':
        result = this.chooseContact();
        break;
      case 'changeTel':
        result = this.changeTel(paramsObject);
        break;
      case 'changeAmount':
        result = this.changeAmount();
        break;
      case 'getProportion':
        result = this.getProportion();
        break;
      default:
        break;
    }
    result.then((data: string) => {
      this.callback(paramsObject?.callID, data);
    })
  }

  /**
   * 将ArkTS侧数据传递到H5
   */
  callback = (id: number, data: string): void => {
    this.controller.runJavaScript(`JSBridgeCallback('${id}', ${JSON.stringify(data)})`);
  }
}