How to get a json file from raw folder?

Question

I want to use my user.json which is in my raw folder to get a new File :

// read from file, convert it to user class
User user = mapper.readValue(new File(**R.raw.user**), User.class);

I found that InputStream can do it :

InputStream ins = res.openRawResource(
                        getResources().getIdentifier("raw/user",
                                "raw", getPackageName()));

Is there a better way to do it, directly with my json file ID ?

Answer 1

InputStream is = getResources().openRawResource(R.raw.json_file);
Writer writer = new StringWriter();
char[] buffer = new char[1024];
try {
    Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
    int n;
    while ((n = reader.read(buffer)) != -1) {
        writer.write(buffer, 0, n);
    }
} finally {
    is.close();
}

String jsonString = writer.toString();

Answer 2

ObjectMapper.readValue also take InputStream as source . Get InputStream using openRawResource method from json file and pass it to readValue :

InputStream in = getResources().openRawResource(R.raw.user);
User user = mapper.readValue(in, User.class);