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更新：看起来返回的图形对象没有更新。我已经更改了消息字段并验证了发件人正在发送正确的消息（至少它显示在 Web 对话框视图中），但接收者仍在接收旧消息。

我在读取附加到通过深度链接返回应用程序的 Facebook 请求的数据时遇到问题。我已经按照 facebook SDK 中的教程进行操作，并且可以发送/接收带有标题和消息的通知请求，但是我附加的数据似乎没有显示给接收者。这是我的代码：

发件人：

    FBSBJSON *jsonWriter = [FBSBJSON new];
NSDictionary *gift = [NSDictionary dictionaryWithObjectsAndKeys:
                      @"5", @"social_karma",
                      @"1", @"badge_of_awesomeness",
                      nil];

NSString *giftStr = [jsonWriter stringWithObject:gift];
NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                               giftStr, @"data",
                               nil];

AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
NSArray *permissions = [NSArray arrayWithObjects:@"email", @"user_birthday", @"user_photos", nil];
appDelegate.session = [[FBSession alloc] initWithPermissions:permissions];

[appDelegate.session openWithCompletionHandler:^(FBSession *session,
                                                 FBSessionState status,
                                                 NSError *error) {
    NSString *message = [NSString stringWithFormat:@"photoID:%@", self.photoModel.photoID];

    // Display the requests dialog
    [FBWebDialogs
     presentRequestsDialogModallyWithSession:appDelegate.session
     message:@"Learn how to make your iOS apps social."
     title:@"What do you think? I just rate this person an "
     parameters:params
     handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
         if (error) {
             // Error launching the dialog or sending the request.
             NSLog(@"Error sending request.");
         } else {
             if (result == FBWebDialogResultDialogNotCompleted) {
                 // User clicked the "x" icon
                 NSLog(@"User canceled request.");
             } else {
                 // Handle the send request callback
                 NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
                 if (![urlParams valueForKey:@"request"]) {
                     // User clicked the Cancel button
                     NSLog(@"User canceled request.");
                 } else {
                     // User clicked the Send button
                     NSString *requestID = [urlParams valueForKey:@"request"];
                     NSLog(@"Request ID: %@", requestID);
                 }
             }
         }
     }];
}];

接收方（在应用委托中）：

- (void) notificationGet:(NSString *)requestid {

NSArray *permissions = [NSArray arrayWithObjects:@"email", @"user_birthday", @"user_photos", nil];
self.session = [[FBSession alloc] initWithPermissions:permissions];

[self.session openWithCompletionHandler:^(FBSession *session,
                                                 FBSessionState status,
                                                 NSError *error) {
    [FBSession setActiveSession:self.session];
    [FBRequestConnection startWithGraphPath:requestid
                          completionHandler:^(FBRequestConnection *connection,
                                              id result,
                                              NSError *error) {
                              if (!error) {
                                  NSString *title;
                                  NSString *message;
                                  if ([result objectForKey:@"data"]) {
                                      title = [NSString
                                               stringWithFormat:@"%@ sent you a gift",
                                               [[result objectForKey:@"from"]
                                                objectForKey:@"name"]];
                                      FBSBJSON *jsonParser = [FBSBJSON new];
                                      NSDictionary *requestData =
                                      [jsonParser
                                       objectWithString:[result objectForKey:@"data"]];
                                      message =
                                      [NSString stringWithFormat:@"Badge: %@, Karma: %@",
                                       [requestData objectForKey:@"badge_of_awesomeness"],
                                       [requestData objectForKey:@"social_karma"]];
                                  } else {
                                      title = [NSString
                                               stringWithFormat:@"%@ sent you a request",
                                               [[result objectForKey:@"from"] objectForKey:@"name"]];
                                      message = [NSString stringWithString:
                                                 [result objectForKey:@"message"]];
                                  }
                                  UIAlertView *alert = [[UIAlertView alloc]
                                                        initWithTitle:title
                                                        message:message
                                                        delegate:nil
                                                        cancelButtonTitle:@"OK"
                                                        otherButtonTitles:nil,
                                                        nil];
                                  [alert show];
                              }
                          }];
    }];
}

同样，我能够通过，而不是数据（参数）来获取消息和标题。

谢谢！

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