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POHow to Upload Photos on facebook using Graph API in iPhone?
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copied!<p>I have made one application, In my application I have integrate Facebook for sharing information. for Facebook integration I have use Graph API in application. now In my application, I want to upload photo on user's wall. I have use this code for upload photo on user's wall.</p> <p>// for upload photo </p> <pre><code>- (void)uploadPhoto:(id)sender { NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Image1" ofType:@"jpg"]; NSString *message = [NSString stringWithFormat:@"I think this is a Great Image!"]; NSURL *url = [NSURL URLWithString:@"https://graph.facebook.com/me/photos"]; ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url]; [request addFile:filePath forKey:@"file"]; [request setPostValue:message forKey:@"message"]; [request setPostValue:_accessToken forKey:@"access_token"]; [request setDidFinishSelector:@selector(sendToPhotosFinished:)]; [request setDelegate:self]; [request startAsynchronous]; } - (void)sendToPhotosFinished:(ASIHTTPRequest *)request { // Use when fetching text data NSString *responseString = [request responseString]; NSMutableDictionary *responseJSON = [responseString JSONValue]; NSString *photoId = [responseJSON objectForKey:@"id"]; NSLog(@"Photo id is: %@", photoId); NSString *urlString = [NSString stringWithFormat: @"https://graph.facebook.com/%@?access_token=%@", photoId, [_accessToken stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSURL *url = [NSURL URLWithString:urlString]; ASIHTTPRequest *newRequest = [ASIHTTPRequest requestWithURL:url]; [newRequest setDidFinishSelector:@selector(getFacebookPhotoFinished:)]; [newRequest setDelegate:self]; [newRequest startAsynchronous]; } </code></pre> <p>But, here I get responseString is <strong>{"error":{"message":"Error validating application.","type":"OAuthException"}}</strong> and <strong>Photo id is: (null)</strong></p> <p>and Image is not upload on user's wall. so, please tell me how to solve it.</p>

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