从Firebase存储下载音频 [英] Download audio from Firebase storage

问题描述

我正在尝试使用Firebase存储作为后端来创建语音消息传递android应用，但是在成功上传mp3文件时却遇到了问题.

I'm trying to create a voice messaging android app using firebase storage as backend, but i'm having issue while downloading mp3 file while it uploads successfully.

有人可以提供简单的代码来从存储中下载音频文件吗? 我是android开发的新手，很抱歉成为新手

Can somebody please provide simple code just to download an audio file from storage. I'm new at android development , so sorry for being noob

我已在清单文件中添加了所有权限，例如波纹管

i've added all the permissions in my manifest file like bellow

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

这是我的上传代码

private void uploadAudio() {
    pd=new ProgressDialog(this);
    pd.setMessage("Uploading");
   pd.show();
    StorageReference filepath = mstorage.child("Audio").child("New_Audio");
    Uri uri = Uri.fromFile(new File(mFileName));
    filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
        @Override
        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
          pd.dismiss();


        }
    });
}

并用于下载

private void startdownload() {

    down = mstorage.child("Audio/");

    File localFile = null;
    try {
        localFile = File.createTempFile("Audio", "mp3");
    } catch (IOException e) {
        e.printStackTrace();
    }

    down.getFile(localFile).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
        @Override
        public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
            Toast.makeText(getApplicationContext(),"Downloded",Toast.LENGTH_SHORT).show();
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception exception) {

        }
    });
}

推荐答案

确保用于上载和下载方法的StorageReference相同.

Make sure your StorageReference for the upload and download method is the same.

//upload
StorageReference filepath = mstorage.child("Audio").child("New_Audio.mp3");
//download
down = mstorage.child("Audio").child("New_Audio.mp3");

要将文件保存到外部存储中，可以遵循此Android开发人员指南

To save the file in the external storage, you can follow this Android Developers guide

一个例子:

try {
    File localFile  = new File(Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_DOWNLOADS), "New_Audio.mp3");
    localFile .createNewFile();
    down.getFile(localFile);
} catch (IOException e) {
    e.printStackTrace();
}

这篇关于从Firebase存储下载音频的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！