CODEWITHSUNDEEP
javaandroidfile-io
Andrew T.
Andrew T.

Reputation: 4686

Android Read a Text file Exactly

I have a text file that has been signed and I need to read this file into a string exactly as it is. The code I am currently using:

    BufferedReader br = new BufferedReader(new FileReader(file));
    String line;
    while ((line = br.readLine()) != null) {
        invitationText.append(line);
        invitationText.append('\n');
    }
    invitationText.deleteCharAt(invitationText.length()-1);

Works if the file has no return at the end, but if it did have a return then the signature check would fail. There's a lot of questions around this so I'm having a hard time finding one that specifically answer this, so this may be a duplicate question. Some restrictions I have though are:

Whether it loops or reads the whole thing in one go doesn't matter to me I just need 100% guarantee that regardless of carriage returns in the file, the file will get read in exactly as it is on disk.

Upvotes: 2

Views: 117

Answers (1)

Martin
Martin

Reputation: 4816

Here's what I use:

 public static String readResponseFromFile() throws IOException {
    File path = "some_path";
    File file = new File(path, "/" + "some.file");
    path.mkdirs();
    String response = null;

    if (file != null) {
        InputStream os = new FileInputStream(file);
        try {
            byte[] bytes = new byte[(int) file.length()];
            os.read(bytes);
            response = new String(bytes);
            os.close();

        } catch (IOException ioEx) {
            throw ioEx;
        } finally {
            if (os != null) {
                os.close();
            }
        }
    }
    return response;
}

Upvotes: 1

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