HarmonyOS 鸿蒙Next 拉起系统分享框失败

可能原因： 使用API不当，API抛出了异常，导致无法拉起。

其他模块出现异常，导致无法拉起。

处理步骤：

1. 首先排查是否是分享API使用不当导致抛出异常，具体参考分享服务API和错误码，找到问题后修改代码。

2. 如果是其他模块出现异常，查看是否有faultlog，有的话可以根据faultlog中的模块排查问题。

参考链接：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/share-system-share-V5

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/share-error-code-V5

请参考以下demo，添加网络权限后即可运行：

import { common } from '@kit.AbilityKit';

import { systemShare } from '@kit.ShareKit';

import { uniformTypeDescriptor as utd } from '@kit.ArkData';

import { BusinessError, request } from '@kit.BasicServicesKit';

import fs from '@ohos.file.fs';

import { buffer } from '@kit.ArkTS';

import { fileUri } from '@kit.CoreFileKit';

@Entry

@Component

struct Index {

  @State imageUri: string = 'https://inews.gtimg.com/om_bt/OM7DU9LBs8fQ2NuR3yTefk9cTN0gGGEoL9dL7AOANr8ecAA/641';

  context = getContext(this) as common.UIAbilityContext;

  filePath = this.context.filesDir + '/test.jpg';

  onPageShow(): void {

    this.checkImageExist()

  }

  checkImageExist(notExistCallback?: Function) {

    fs.access(this.filePath).then((res: boolean) => {

      if (res) {

        console.info("TestShare file exists");

        this.imageUri = fileUri.getUriFromPath(this.filePath);

      } else {

        console.info("TestShare file not exists");

        if (notExistCallback) {

          notExistCallback()

        }

      }

    }).catch((err: BusinessError) => {

      console.info("TestShare access failed with error message: " + err.message + ", error code: " + err.code);

    });

  }

  // 只是为了分享图片，随便找个图片下载

  downloadFile(callback: Function) {

    this.checkImageExist(() => {

      request.downloadFile(this.context, {

        url: 'https://image.baidu.com/search/down?tn=download&word=download&ie=utf8&fr=detail&url=http%3A%2F%2Fpic1.win4000.com%2Fwallpaper%2F2019-11-22%2F5dd7afa7df0fc.jpg&thumburl=https%3A%2F%2Fimg1.baidu.com%2Fit%2Fu%3D2205810988%2C4283060315%26fm%3D253%26fmt%3Dauto%26app%3D138%26f%3DJPEG%3Fw%3D800%26h%3D500',

        filePath: this.filePath,

        background: true

      }).then((downloadTask: request.DownloadTask) => {

        downloadTask.on('progress', (receivedSize: number, totalSize: number) => {

          console.info("TestShare download receivedSize:" + receivedSize + " totalSize:" + totalSize);

        });

        downloadTask.on('complete', () => {

          console.info('TestShare download complete');

          let file = fs.openSync(this.filePath, fs.OpenMode.READ_WRITE);

          console.info('TestShare The content of file: %{public}s', 'file:/' + this.filePath);

          let arrayBuffer = new ArrayBuffer(1024);

          let readLen = fs.readSync(file.fd, arrayBuffer);

          let buf: buffer.Buffer = buffer.from(arrayBuffer, 0, readLen);

          console.info('TestShare The content of file: %{public}s', buf.toString());

          fs.closeSync(file);

          callback()

        })

      }).catch((err: BusinessError) => {

        console.error(`TestShare Invoke downloadTask failed, code is ${err.code}, message is ${err.message}`);

      });

    })

  }

  TestSystemShare() {

    // 构造ShareData，需配置一条有效数据信息

    let data: systemShare.SharedData = new systemShare.SharedData({

      utd: utd.UniformDataType.PLAIN_TEXT,

      content: 'Hello HarmonyOS'

    });

    // 获取文件的沙箱路径

    let pathInSandbox = this.context.filesDir + '/test.jpg';

    // 将沙箱路径转换为uri

    let uri = fileUri.getUriFromPath(pathInSandbox);

    // 添加多条记录

    data.addRecord({

      utd: utd.UniformDataType.PNG,

      uri: uri

    });

    // 构建ShareController

    let controller: systemShare.ShareController = new systemShare.ShareController(data);

    // 注册分享面板关闭监听

    controller.on('dismiss', () => {

      console.log('TestShare Share panel closed');

      // 分享结束，可处理其他业务。

    });

    // 进行分享面板显示

    controller.show(this.context, {

      previewMode: systemShare.SharePreviewMode.DETAIL,

      selectionMode: systemShare.SelectionMode.SINGLE

    });

  }

  build() {

    Column({space: 10}) {

      Button('查看并下载图片')

        .onClick(() => {

          if (this.imageUri !== '') {

            return;

          }

          this.downloadFile(() => {

            this.imageUri = fileUri.getUriFromPath(this.filePath);

          })

        })

      Image(this.imageUri)

        .width(200)

        .height(200)

        .backgroundColor(Color.Gray)

      Button('系统分享')

        .onClick(() => {

          this.TestSystemShare()

        })

    }

    .width('100%')

    .height('100%')

    .justifyContent(FlexAlign.Center)

  }

}