How to Convert audio .mp3 file to String and vice versa?

Question

Is it possible to convert an audio mp3 file to a string data for sending data to the server, and server will return a string data to my app i want to convert that data to mp3 file and play audio.

I am using this code to convert mp3 file to string data

public static String readFileAsString(String filePath) throws java.io.IOException {

    BufferedReader reader = new BufferedReader(new FileReader(filePath));
    String line, results = "";
    while( ( line = reader.readLine() ) != null)
    {
        results += line;
    }
    reader.close();
    return results;

}

i don't know how to get back my mp3 file from converted strind data.

If possible then how ? anybody help me.

Or any other solution for this requirement tell me: i want to pass audio and video files to server and get back from the server to use in app.

then what is the solution to pass mp3 file to server and get back from server. — RajaReddy PolamReddy, Dec 11 '12 at 11:13
Don't know the reason behind string conversion. However, just asking, why not upload the file itself with a track with database and getting back with a streaming? — Vinay, Dec 11 '12 at 11:34
@vini if there is any other possibilities, give link i will try to do that. — RajaReddy PolamReddy, Dec 11 '12 at 11:36
@RajaReddyPolamReddy are you asking me a link about string conversion or file upload? — Vinay, Dec 11 '12 at 11:44
ya, actually i tried like this what i was uploaded in question, but i am unable to retrieve data from converted data. — RajaReddy PolamReddy, Dec 11 '12 at 11:55

Nipun Gogia · Accepted Answer · 2012-12-11T12:00:44.130

use Base64.encodeToString() try this http://developer.android.com/reference/android/util/Base64.html#encodeToString%28byte%5B%5D,%20int%29

File file = new File(Environment.getExternalStorageDirectory() + "/hello-4.wav");
byte[] bytes = FileUtils.readFileToByteArray(file);

String encoded = Base64.encodeToString(bytes, 0);                                       
Utilities.log("~~~~~~~~ Encoded: ", encoded);

byte[] decoded = Base64.decode(encoded, 0);
Utilities.log("~~~~~~~~ Decoded: ", Arrays.toString(decoded));

try
{
    File file2 = new File(Environment.getExternalStorageDirectory() + "/hello-5.wav");
    FileOutputStream os = new FileOutputStream(file2, true);
    os.write(decoded);
    os.close();
}
catch (Exception e)
{
    e.printStackTrace();
}



public class FileUtils {

    /**
     * Instances should NOT be constructed in standard programming.
     */
    public FileUtils() { }

    /**
     * The number of bytes in a kilobyte.
     */
    public static final long ONE_KB = 1024;

    /**
     * The number of bytes in a megabyte.
     */
    public static final long ONE_MB = ONE_KB * ONE_KB;

    /**
     * The number of bytes in a gigabyte.
     */
    public static final long ONE_GB = ONE_KB * ONE_MB;



    public static String readFileToString(
            File file, String encoding) throws IOException {
        InputStream in = new java.io.FileInputStream(file);
        try {
            return IOUtils.toString(in, encoding);
        } finally {
            IOUtils.closeQuietly(in);
        }
    }



    }

}

i again edited the code just check it out again i have merge fileutil class in my code — Nipun Gogia, Dec 11 '12 at 12:03

Hamed Abu-Irmeileh · Answer 2 · 2016-01-22T18:19:45.137

0

Error:(49, 41) error: cannot find symbol method readFileToByteArray(File)

i think you have not defined that method in FileUtils, did you ?

i have resolved this issue by changing the code as follows:

//byte[] bytes = FileUtils.readFileToByteArray(file);
            byte[] bytes = new byte[(int)file.length()];

edited Jan 22 '16 at 18:19

answered Jan 22 '16 at 18:11

Hamed Abu-Irmeileh

5
3

How to Convert audio .mp3 file to String and vice versa?

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