Android - Converting Bitmap to string to be included in multipart request

Question

I'm trying to convert a Bitmap to String that I can include in my multipart HTTP request, I have to construct the request body manually and my problem is that when I convert the Bitmap to byte array and then from byte array to String I seem to lose the integrity of the file structure. How can I convert the Bitmap to String without damaging the file structure?

Bitmap imageBitmap = BitmapFactory.decodeFile(data.getData());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
String s = new String(baos.toByteArray());

Answer 1

You can convert Bitmap to String with Base64 Try this ...

public String convertBitmapToString(final Bitmap pBitmap){
    final ByteArrayOutputStream byteArrayOutputStream = new  ByteArrayOutputStream();
    pBitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
    final byte [] bytes = byteArrayOutputStream.toByteArray();
    final String string = Base64.encodeToString(bytes, Base64.DEFAULT); 
    return string;
}

Or if you can't use base64, try this

 try {
     String s = new String(baos.toByteArray(), "UTF-8");
 } catch (UnsupportedEncodingException e) {
     e.printStackTrace();
 }