ios - 使用 ionic 媒体插件录制语音笔记在 IOS 上不起作用

我正在尝试使用 ionic cordova Media 和 File 插件在 ios 设备上录制语音笔记并将其推送到 firebase 存储。

On android is working well.

这是我的代码:

首先我创建了 init() 函数

  init(): Promise < any > {
    this.date = moment().format('x');
    return new Promise((resolve, reject) => {
      let currentFile: File;
      this.fileName = this.date + `-rnb.mp3`;
      this.file.createFile(this.platform.is('ios') ? cordova.file.tempDirectory : cordova.file.dataDirectory, this.fileName, true).then((result) => {
        this.current_file_playing = this.createAudioFile(this.storageDirectory, this.fileName);
        resolve();
      }, (e) => {
        console.log(JSON.stringify(e, null, 2));
        reject(e);
      })
    });
  }

this.storageDirectory 它是在提供者constructor() 中定义的变量，等于目录路径取决于平台。这是以下代码:

this.platform.ready().then(() => {
  if (this.platform.is('ios')) {
    this.storageDirectory = this.file.tempDirectory;
  } else if (this.platform.is('android')) {
    this.storageDirectory = this.file.externalDataDirectory;
  }
});

那么record()函数就是监听按钮录制按钮

  record(){
    return new Promise((resolve,reject)=>{
      this.init().then((media:Media) => {
        try {
          this.startRecording(media);
          resolve(media);
        } catch (e) {
          console.log(e);
        }
      });
    });
  }

这是 startRecording() 函数:

  startRecording(mediaPlugin: any) {
    this.current_file_playing.startRecord();
  }

另外stopRecording()函数是一个停止按钮的监听器:

  stopRecording(mediaPlugin: any) {
    return new Promise((resolve,reject)=>{
      this.current_file_playing.stopRecord();
      this.current_file_playing.play();
      this.current_file_playing.setVolume(0.0); //trick
      this.saveFirebase().then((downloadUrl) => {
        resolve(downloadUrl);
      });
    });
  }

最后，这就是我使用 saveFirebase() 函数

插入 Firebase 的方式

  saveFirebase() {
    return new Promise((resolve, reject) => {
      let storageRef = firebase.storage().ref();
      let metadata = {
        contentType: 'audio/mp3',
      };
      this.file.readAsDataURL(this.storageDirectory, this.fileName).then((file) => {
        let voiceRef = storageRef.child(`voices/${this.fileName}`).putString(file, firebase.storage.StringFormat.DATA_URL);
        voiceRef.on(firebase.storage.TaskEvent.STATE_CHANGED, (snapshot) => {
          console.log("uploading");
        }, (e) => {
          console.log('inside the error');
          reject(e);
          console.log(JSON.stringify(e, null, 2),'this.error');
        }, () => {
          var downloadURL = voiceRef.snapshot.downloadURL;
          resolve(downloadURL);
        });
      });
    });
  }

saveFirebase()函数说明

首先我使用 this.file.readAsDataURL(...) 将文件转换为 base64 然后我使用 putString 推送 Firebase 存储方法。

The audio file is successfully pushed to Firebase Storage, But with 0 Byte size. That is mean to pushing to Firebase is working well, but the recording voice to the file is not working.

The audio files that have size is recorded from android device.

有人知道我的问题是什么吗？

谢谢。

---

Best Answer-推荐答案

问题是:

音频文件应为 .wav。因此，当我将音频类型更改为 wav 时。

  let metadata = {
    contentType: 'audio/wav',
  };

this.fileName = this.date + `-rnb.mp3`;

它对我有用。

谢谢。

关于ios - 使用 ionic 媒体插件录制语音笔记在 IOS 上不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48824291/