iPad: Cannot load facebook page wall in UIWebview

Question

Its already too long i am struggling with this issue. After searching a lot I decided to post a question here.

What my app does

1. Captures photo
2. Uploads the photo on the wall of the page
3. Displays the facebook page wall in a UIWebview after upload is complete

Everything was working as expected 4 days back :) Suddenly something went wrong :(

Code

    NSString *facebookPageURL =@"https://m.facebook.com/pages/<myPageName>/<myPageID>?v=wall"
    UIWebView *webView = [[UIWebView alloc] initWithFrame:kAppFrame];
    [webView setUserInteractionEnabled:NO];
    [webView setBackgroundColor:[UIColor clearColor]];
    webView.delegate = self;
    [webView setHidden: YES];

    NSURL *url = [NSURL URLWithString:[facebookPageURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] relativeToURL:[NSURL URLWithString:@"http://login.facebook.com"]];
    NSMutableURLRequest *request = nil;

    if(url)
        request = [NSMutableURLRequest requestWithURL:url];        
       [webView loadRequest:request];
    [self.view addSubview:webView];
    [webView reload];
    [self.view bringSubviewToFront:webView];
    webView = nil;

Scenario

1. If I open the url facebookPageURL in Safari in iOS Simulator it works well
2. If I open the url in any browser on Mac it works well
3. In webView I see a white screen
4. If I change the facebookPageURL to remove ?v=wall to ?v=info I am stil able to see the page.(not blank screen atleast).

Note 1. My facebook Page is NOT unpublished and is visible. 2. I have cross checked the facebook page permissions.

I suspect there is something changed on facebook side overnight.

Please guide.

Answer 1

It seems the ever capricious Facebookhas removed the permission to view the wall. I came to this conclusion as when I tried the same thing in separate project I was getting both info and photos but for wall it turned grey

So Here the solution for al those suffering or might suffer form this issue.

I am getting a dictionary in response to the post

{"id":"<imge_id>","post_id":"<post_id>"}

http://www.facebook.com/photo.php?fbid=<imge_id>

and it works like a charm.

Edit:1 Just now I figured out an issue For the pages with an age restriction, we need to authenticate which SSO doesn't supports for UIWebView inside my app.

I had to downgrade to NOT using SSO anymore. And now it works no matter what.

Just to add here you can find how to neatly downgrading to non-sso mechanism.