Question

I just need to decrypt response from httpresponse by the response is png picture so i did:

HttpPost httppost = new HttpPost(tileURLString);
nameValuePairs.add(new BasicNameValuePair("x", String.valueOf(ValueX)));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

and if I get response by

HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
if (entity == null) {
    Log.i("Error","No content download");
}

InputStream in = entity.getContent();

this is work. but i need to get this output as string to decrypt by use xor so all i did is:

String responseText = EntityUtils.toString(response.getEntity());
InputStream in = new ByteArrayInputStream(responseText.getBytes());

PS. this still not decrypt just normal inputstream but didn’t work. I googled for a day. Help me please. if this work i’ll go to next step (decrypt).
Thanks in advance.

EDIT: or i use this method
Convert InputStream to string by

private String convertStreamToString(InputStream is) {

        BufferedReader reader = new BufferedReader(
                new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append((line + "\n"));
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }

Then i use this to convert back to inputstream but it also didn’t work.

    public InputStream convertStringToStream(String text)
            throws UnsupportedEncodingException {
        return new ByteArrayInputStream(text.getBytes("UTF-8"));
    }

Answer 1

Solved for answer is in this page

Android byte array to string to byte array

Thanks for your help.