如何在Android Studio中正确访问文本文件

InputStream inputStream = getResources().openRawResource(R.raw.filename);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line;
try {
    while ((line = reader.readLine()) != null) {
        stringBuilder.append(line);
    }
} catch (IOException e) {
    e.printStackTrace();
}
String fileContent = stringBuilder.toString();