HarmonyOS鸿蒙Next中实现点击按钮发出声音时出现“soundPool load failed and catch error is No such file or directory”错误

参考demo

import { media } from '@kit.MediaKit';
import { audio } from '@kit.AudioKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { common } from '@kit.AbilityKit';

@Component
struct BorderExample3 {
  private context: common.UIAbilityContext = this.getContext(this) as common.UIAbilityContext;

  build() {
    Button("测试").onClick(() => {
      let soundPool: media.SoundPool;
      let audioRendererInfo: audio.AudioRendererInfo = { usage: audio.StreamUsage.STREAM_USAGE_MUSIC, rendererFlags: 1 };
      media.createSoundPool(5, audioRendererInfo, (error: BusinessError, soundPool_: media.SoundPool) => {
        if (error) {
          return;
        } else {
          console.info(`createSoundPool success`);
          this.setCallBack(soundPool_);
          let file = this.context.resourceManager.getRawFdSync('assets/addsub.mp3');
          soundPool = soundPool_;
          soundPool.load(file.fd, file.offset, file.length).then((soundId: number) => {
            console.info('soundPool load uri success');
          });
        }
      });
    });
  }

  setCallBack(soundPool: media.SoundPool) {
    soundPool.on('loadComplete', (soundId: number) => {
      console.info(`[SoundPoolDemo] loadComplete success，soundId：${soundId}`);
      let playParameters: media.PlayParameters = {
        loop: 1, // 循环4次
        rate: audio.AudioRendererRate.RENDER_RATE_NORMAL, // 正常倍速
        leftVolume: 0.5, // range = 0.0-1.0
        rightVolume: 0.5, // range = 0.0-1.0
        priority: 0, // 最低优先级
      };
      soundPool.play(soundId, playParameters).then((streamId: number) => {
        console.info('play success');
      }, (err: BusinessError) => {
        console.error(`soundpool play failed and catch error is ${err.message}`);
      });
    });

    soundPool.on('playFinished', () => {
      console.info(`[SoundPoolDemo] playFinished success`);
    });

    soundPool.on('error', (error: BusinessError) => {
      console.error(`error happened,and error is ${JSON.stringify(error)}`);
    });
  }
}