LoginManager.java - Facebook android SDK

LoginManager.java

  private static final String PUBLISH_PERMISSION_PREFIX = "publish";
  private static final String MANAGE_PERMISSION_PREFIX = "manage";
  private static final String EXPRESS_LOGIN_ALLOWED = "express_login_allowed";
  private static final String PREFERENCE_LOGIN_MANAGER = "com.facebook.loginManager";
  private static final Set<String> OTHER_PUBLISH_PERMISSIONS = getOtherPublishPermissions();

//source https://github.com/facebook/facebook-android-sdk/blob/1d9c7b1fe699389e25b44e3c52adac7e09df166d/facebook-common/src/main/java/com/facebook/login/LoginManager.java#L578-L588
  private static Set<String> getOtherPublishPermissions() {
    HashSet<String> set =
        new HashSet<String>() {
          {
            add("ads_management");
            add("create_event");
            add("rsvp_event");
          }
        };
    return Collections.unmodifiableSet(set);
  }


//Source: https://github.com/facebook/facebook-android-sdk/blob/master/facebook-common/src/main/java/com/facebook/login/LoginManager.java#L413-L423
  /**
   * Logs the user in with the requested read permissions.
   *
   * @param activity The activity which is starting the login process.
   * @param permissions The requested permissions.
   */
  public void logInWithReadPermissions(Activity activity, Collection<String> permissions) {
    validateReadPermissions(permissions);

    logIn(activity, permissions);
  }

//source https://github.com/facebook/facebook-android-sdk/blob/master/facebook-common/src/main/java/com/facebook/login/LoginManager.java#L542-L555
  private void validateReadPermissions(Collection<String> permissions) {
    if (permissions == null) {
      return;
    }
    for (String permission : permissions) {
      if (isPublishPermission(permission)) {
        throw new FacebookException(
            String.format(
                "Cannot pass a publish or manage permission (%s) to a request for read "
                    + "authorization",
                permission));
      }
    }
  }
//source https://github.com/facebook/facebook-android-sdk/blob/master/facebook-common/src/main/java/com/facebook/login/LoginManager.java#L571-L576

 static boolean isPublishPermission(String permission) {
    return permission != null
        && (permission.startsWith(PUBLISH_PERMISSION_PREFIX)
            || permission.startsWith(MANAGE_PERMISSION_PREFIX)
            || OTHER_PUBLISH_PERMISSIONS.contains(permission));
  }