Javascript 我可以将媒体对象从ionic转换为Blob吗？

我尝试将Ionic中记录的MediaObject转换为Blob，但没有成功。 有人知道怎么做吗

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您需要首先获取文件的路径，然后将其转换为blob

获取文件路径：

为了避免一些iOS怪癖，我首先使用文件插件的

createFile（）

方法创建一个临时文件。它返回一个承诺，该承诺解析为您需要通过

toInternalURL（）

方法将其转换为cordova（CDV）文件路径的路径。介质对象是在创建临时文件后创建的。它不应该有

“file://”

前缀。e、 g

this.filePlugin.createFile(this.file.tempDirectory, YOUR_FILE_NAME, true).then(filePath => { 
    audio: MediaObject = this.media.create(this.file.tempDirectory.replace(/^file:\/\//, '') + YOUR_FILE_NAME);
    // your recording logic here...
    // once the recording is finished:
    cdvPath = filePath.toInternalURL(); 
} 

录制完成后，我们使用路径通过以下函数创建blob。用上面获得的

cdvPath

调用它，就完成了。（请注意它解析为对象的事实！）：

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你能添加一些代码吗？你试过这个了吗。audioBlob=newblob（[this.audio]，{type:'audio/mp3'}）；

this.filePlugin.createFile(this.file.tempDirectory, YOUR_FILE_NAME, true).then(filePath => { 
    audio: MediaObject = this.media.create(this.file.tempDirectory.replace(/^file:\/\//, '') + YOUR_FILE_NAME);
    // your recording logic here...
    // once the recording is finished:
    cdvPath = filePath.toInternalURL(); 
} 

makeFileIntoBlob(_filePath) {
    return new Promise((resolve, reject) => {
        let fileName, fileExtension = "";
        this.file.resolveLocalFilesystemUrl(_filePath)
            .then(fileEntry => {
                let {name, nativeURL} = fileEntry;
                // get the path..
                let path = nativeURL.substring(0, nativeURL.lastIndexOf("/"));
                fileName = name;
                // if you already know the file extension, just assign it to           // variable below
                fileExtension = fileName.match(/\.[A-z0-9]+$/i)[0].slice(1);
                // we are provided the name, so now read the file into a buffer
                return this.file.readAsArrayBuffer(path, name);
            })
            .then(buffer => {
                // get the buffer and make a blob to be saved
                let medBlob = new Blob([buffer], {
                    type: `audio/${fileExtension}`
                });

                // pass back blob and the name of the file for saving
                // into fire base
                resolve({ blob: medBlob, blobName: name});
            })
            .catch(e => reject(e));
    });
}