HarmonyOS鸿蒙Next中求使用avPlayer播放音频的功能比较完备的完整示例代码仓库

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看下这个帖子：https://developer.huawei.com/consumer/cn/blog/topic/03188919387316015

完整代码：

import { media } from '@kit.MediaKit';
import { BusinessError, emitter } from '@kit.BasicServicesKit';
import { Logger } from '@k12unipus/xbase';

const TAG = '[AvPlayer]  '

@ObservedV2
export class AudioPlayManager {
  private count: number = 0;
  private isSeek: boolean = true; // 用于区分模式是否支持seek操作。
  private fileSize: number = -1;
  private fd: number = 0;
  private avPlayer: media.AVPlayer | null = null
  @Trace audioDuration: number = 0
  @Trace currAudioTime: number = 0
  @Trace isPlaying: boolean = false
  @Trace audioPlayState: media.AVPlayerState = 'idle';

  // 注册avplayer回调函数。
  setAVPlayerCallback(avPlayer: media.AVPlayer) {
    // seek操作结果回调函数。
    avPlayer.on('seekDone', (seekDoneTime: number) => {
      Logger.info(`${TAG} on seekDone, seek time is ${seekDoneTime}`);
    });
    // error回调监听函数,当avPlayer在操作过程中出现错误时调用 reset接口触发重置流程。
    avPlayer.on('error', (err: BusinessError) => {
      Logger.error(`${TAG} on error, code is ${err.code}, message is ${err.message}`);
      avPlayer.reset(); // 调用reset重置资源，触发idle状态。
    });
    avPlayer.on('timeUpdate', (time: number) => {
      Logger.info(`${TAG} on timeUpdate :  ${time}`);
      this.currAudioTime = time
    });
    avPlayer.on('durationUpdate', (time: number) => {
      Logger.info(TAG + `on durationUpdate: ${time}`)
      this.audioDuration = time;
    })
    // 状态机变化回调函数。
    avPlayer.on('stateChange', async (state: string, reason: media.StateChangeReason) => {
      switch (state) {
        case 'idle': // 成功调用reset接口后触发该状态机上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          // avPlayer.release(); // 调用release接口销毁实例对象。
          break;
        case 'initialized': // avplayer 设置播放源后触发该状态上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          // avPlayer.audioRendererInfo = {
          //   usage: audio.StreamUsage.STREAM_USAGE_MUSIC, // 音频流使用类型：音乐。根据业务场景配置，参考StreamUsage。
          //   rendererFlags: 0 // 音频渲染器标志。
          // };
          avPlayer.prepare();
          break;
        case 'prepared': // prepare调用成功后上报该状态机。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          // this.audioDuration = avPlayer.duration
          break;
        case 'playing': // play成功调用后触发该状态机上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          break;
        case 'paused': // pause成功调用后触发该状态机上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          avPlayer.pause()
          break;
        case 'completed': // 播放结束后触发该状态机上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          this.resetCurrAudioPlayStatusInfo();
          break;
        case 'stopped': // stop接口成功调用后触发该状态机上报。
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          break;
        case 'released':
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          this.setAudioPlayState(avPlayer.state)
          break;
        default:
          Logger.info(`${TAG} 状态机 audioPlayState: ${avPlayer.state}`);
          break;
      }
    });
  }

  //设置当前音频播放状态
  setAudioPlayState(state: media.AVPlayerState) {
    this.audioPlayState = state;
    Logger.info(TAG + `setAudioPlayState audioPlayState: ${this.audioPlayState}`)
  }


  //音频播放
  async setAudioSrcToPrepared(audioSrc: string) {
    // 创建avPlayer实例对象。
    this.avPlayer = await media.createAVPlayer();
    //设置状态机
    this.setAVPlayerCallback(this.avPlayer!);
    //设置 音频url，状态自动跳至 initialized
    this.avPlayer!.url = audioSrc;
  }


  async startPlay() {
    this.isPlaying = true
    this.avPlayer?.play()
  }

  async stopPlay() {
    this.avPlayer?.prepare()
    this.isPlaying = false
  }

  async release() {
    this.avPlayer?.release()
    this.isPlaying = false
  }

  async reset() {
    this.isPlaying = false
    this.currAudioTime = 0
    this.avPlayer?.prepare();
    // this.avPlayer?.release()
    this.avPlayer = null;
  }

  //重置当前音频播放状态信息
  resetCurrAudioPlayStatusInfo() {
    this.isPlaying = false
    this.currAudioTime = 0
    this.setAudioPlayState('stopped');
  }


  async seek(value: number) {
    this.avPlayer?.seek(value)
  }
}

获取音视频总时长
//可以在状态机中监听 durationUpdate
avPlayer.on('durationUpdate', (time: number) => {
  Logger.info(TAG + `on durationUpdate: ${time}`)
  this.audioDuration = time;
})
获取当前音视频播放时长
//状态机中监听timeUpdate属性
avPlayer.on('timeUpdate', (time: number) => {
  Logger.info(`${TAG} on timeUpdate :  ${time}`);
  this.currAudioTime = time
});

目前华为官方提供的HarmonyOS Next音频播放示例代码仓库如下：

GitHub地址：https://github.com/applibgroup/AvPlayer

该仓库包含完整的avPlayer音频播放功能实现，涵盖音频加载、播放控制、状态监听等核心功能。代码采用ArkTS语言编写，符合HarmonyOS Next开发规范，可直接参考使用。