private static String hashBytes(MessageDigest hash, byte[] bytes) {
hash.update(bytes);
byte[] digest = hash.digest();
StringBuilder builder = new StringBuilder();
for (int b : digest) {
builder.append(Integer.toHexString((b >> 4) & 0xf));
builder.append(Integer.toHexString((b >> 0) & 0xf));
}
return builder.toString();
}
/** Build user's info to display on the screen */
private String buildUserInfoDisplay(GraphUser user) {
StringBuilder userInfo = new StringBuilder("");
/** (name) - no special permissions required */
userInfo.append(String.format("Name: %s\n", user.getName()));
/** (birthday) - requires user_birthday permission */
userInfo.append(String.format("Birthday: %s\n", user.getBirthday()));
/** (location) - requires user_location permission */
GraphPlace location = user.getLocation();
if (location != null) {
userInfo.append(String.format("Location: %s\n", location.getProperty("name")));
}
/** (locale) - no special permissions required */
userInfo.append(String.format("Locale: %s\n", user.getProperty("locale")));
/** (languages) - requires user_likes permission. */
JSONArray languages = (JSONArray) user.getProperty("languages");
if (languages != null && languages.length() > 0) {
ArrayList<String> languageNames = new ArrayList<String>();
for (int i = 0; i < languages.length(); i++) {
JSONObject language = languages.optJSONObject(i);
languageNames.add(language.optString("name"));
}
userInfo.append(String.format("Languages: %s\n", languageNames.toString()));
}
return userInfo.toString();
}
public static String readStreamToString(InputStream inputStream) throws IOException {
BufferedInputStream bufferedInputStream = null;
InputStreamReader reader = null;
try {
bufferedInputStream = new BufferedInputStream(inputStream);
reader = new InputStreamReader(bufferedInputStream);
StringBuilder stringBuilder = new StringBuilder();
final int bufferSize = 1024 * 2;
char[] buffer = new char[bufferSize];
int n = 0;
while ((n = reader.read(buffer)) != -1) {
stringBuilder.append(buffer, 0, n);
}
return stringBuilder.toString();
} finally {
closeQuietly(bufferedInputStream);
closeQuietly(reader);
}
}