I&#39;ve moved this answer out of @isaacselement question.

---

Just add one more code to your **FBOpenGraphAction** Object:

    id&lt;FBOpenGraphAction&gt; action = (id&lt;FBOpenGraphAction&gt;) [FBGraphObject graphObject];
    [action setObject: @&quot;true&quot; forKey: @&quot;fb:explicitly_shared&quot;];  // This is the key point!


And you should enable the **&#39;explicitly shared&#39;** setting for the open graph action in the **Facebook Developer App Dashboard** in the website.


For more details, look at the [Document about Explicit Sharing][1]


  [1]: https://developers.facebook.com/docs/opengraph/guides/explicit-sharing/

You can use Scocial.framework for to directy post on facebook.
It just use users built in facebook account associated with ios.
And you will be able to post on timeline.

Is it typically bad programming practice in iOS to have a nested view controller&#39;s view inside UIViewController&#39;s view? Say for instance I wanted to have some kind of interactive element that responds to user&#39;s touches, but only takes up maybe 25% of the screen. 

I suppose I would add this nested view controller to my UIViewController by saying something like:

    [self.view addSubview: nestedViewController.view];



iOS Nested View Controllers view inside UIViewController&#39;s view?

Does anyone know why this does not work?

    $http
        .get(&#39;accept.php&#39;, {
            source: link,
            category_id: category
        })
        .success(function (data, status) {
            $scope.info_show = data
        });

and this does work:

    $http
        .get(&#39;accept.php?source=&#39; + link + &#39;&amp;category_id=&#39; + category)
        .success(function (data, status) {
            $scope.info_show = data
        });

$http get parameters does not work

From the Facebook SDK sample code, when successfully posting the open graph object to the timeline, you have to click **Show on Timeline** in the **Activity Log** on the Facebook website.

How to ignore these steps and explicitly share your OG to timeline? 

IOS Facebook SDK - Post Open Graph and show on Timeline without clicking Activity Log

From the Facebook SDK sample code, when successfully posting the open graph object to the timeline, you have to click Show on Timeline in the Activity Log on the Facebook website.
How to ignore these steps and explicitly share your OG to timeline?

At the moment, I&#39;m using a `UITableView` along with other views that are contained in a `UIScrollView`. I want the `UITableView` to have its height to be the same as its content height.

To complicate things, I&#39;m also inserting / deleting rows to provide an accordion effect so that when the user taps on a row, it will show more detail for that row.

I&#39;ve got the insert / deletion done, though at the moment it doesn&#39;t update the UIScrollView which is its superview so that the content size of the `UIScrollView` is recalculated and the `UITableView` along with other views in the `UIScrollView` are displayed correctly.

How can I go about implementing this so that `UIScrollView`&#39;s size is adjusted and its contents laid out correctly when I change the content of the `UITableView`? I&#39;m currently using auto layout.

UITableView within UIScrollView using autolayout

My application was working perfectly fine, then I started integrating SDK for push notification and stop the integration in between. I even deleted the SDK from my project and trying to archive or run the app, it gives me the error:

&gt;lipo Error!! can&#39;t open input file.

Any help would be appreciated a lot, I have given enough time to solve this but failed.

&gt;/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo: can&#39;t open input file: 
/Users/XYZ/Library/Developer/Xcode/DerivedData/MyAPP-hjbmqpnmsoruqxbwlayqkjsojccv/Build/Intermediates/MyAPP.build/Debug-iphoneos/MyAPP.build/Objects-normal/armv7s/MyAPP (No such file or directory)

Lipo Error!! can&#39;t open input file

My question is on the title.

I don&#39;t know how to add a border in a specific side, top or bottom, any side...
`layer.border` draws the border for the whole view...



How to add a border just on the top side of a UIView

I am trying to set cornerRadius of UIButton but I dont know how to do it.

If I do like this:

    button.layer.cornerRadius = 5;

works well, if I do like this :

    button.layer.cornerRadius = 5;
    [button setBackgroundColor:[UIColor colorWithPatternImage:radialGradient]];
the corners are not rounded.

I know I could solve this whit

     [button.layer setMasksToBounds:YES];
but I specifically looking for different solution, because I add some arrows to the button and if I set mask to bounds the arrow are masked.   

EDIT : 

radialGradient is made whit func
    
    + (UIImage *)getRadialGradientImage:(CGSize)size centre:(CGPoint)centre radius:(float)radius startColor:(UIColor *)startColor endColor:(UIColor *)endColor{
    
    // Initialise
    UIGraphicsBeginImageContextWithOptions(size, YES, 1);
    
    // Create the gradient&#39;s colours
    size_t num_locations = 2;
    CGFloat locations[2] = { 0.0, 1.0 };
    
    const CGFloat *component_first = CGColorGetComponents([startColor CGColor]);
    
    CGFloat red1 = component_first[0];
    CGFloat green1 = component_first[1];
    CGFloat blue1 = component_first[2];
    
    const CGFloat *component_second = CGColorGetComponents([endColor CGColor]);
    CGFloat red2 = component_second[0];
    CGFloat green2 = component_second[1];
    CGFloat blue2 = component_second[2];
    
    const CGFloat components[8] = { red1,green1,blue1,1,red2,green2,blue2,1}; // End color
    
    CGColorSpaceRef myColorspace = CGColorSpaceCreateDeviceRGB();
    CGGradientRef myGradient = CGGradientCreateWithColorComponents (myColorspace, components, locations, num_locations);
    
    // Normalise the 0-1 ranged inputs to the width of the image
    CGPoint myCentrePoint = CGPointMake(centre.x * size.width, centre.y * size.height);
    float myRadius = MIN(size.width, size.height) * radius;
    
    // Draw it!
    CGContextDrawRadialGradient (UIGraphicsGetCurrentContext(), myGradient, myCentrePoint,
                                 0, myCentrePoint, myRadius,
                                 kCGGradientDrawsAfterEndLocation);
    
    // Grab it as an autoreleased image
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    
    // Clean up
    CGColorSpaceRelease(myColorspace); // Necessary?
    CGGradientRelease(myGradient); // Necessary?
    UIGraphicsEndImageContext(); // Clean up
    return image;
    }

set cornerRadius and setbackgroundimage to UIButton

I have a `UIViewController` subclass as a scene in the storyboard that contains a `UIScrollView ` containing various subviews.  One of the subviews is a `UIButton` which segues into another scene `UIViewController` subclass.  When I come back from the view (pop the `UIViewController` off the navigation controller stack), I find that the scroll view&#39;s origin has somehow changed, although the `contentsize` and `contentoffset` seem correct.

What&#39;s also interesting is that the app has a tab bar, and when I tab away and back to that view, the scroll view is set back correctly with offset at (0, 0).

There is basically no code involved in this process, as it&#39;s pretty much all in the storyboard.  As I am fairly new to using the storyboard, I figure I&#39;m doing something wrong, although I don&#39;t know what.  Any ideas as to what that may be?  Perhaps sizing issues or constraints?

UIScrollView&#39;s origin changes after popping back to the UIViewController

I have managed to post to Facebook Page via API (C#), but when administrator of the page logs out, the following error occurs:

&quot;(OAuthException - #190) Error validating access token: The session is invalid because the user logged out.&quot;

How do I generate access token which is never expired?

I need a solution that doesn&#39;t open Facebook Login dialog.

Generate &quot;never-expire&quot; access token for Facebook Page

I know there are several Qs here that ask if its possible to add badges to an android app and they all end up with a NO answer...

But somehow the latest Facebook beta version for Android [seems to do something which at least look like a badge][1] even if it is not technically exactly that.

In that post one of the commenters says that it is somehow related to TouchWiz. 
And [also here they][2] mention it as a feature of the &quot;S3 TouchWiz Jelly Bean Addon&quot;. 

I still would appreciate information on how does this can be done and if there is some API for this that I can use in my own app (when running in an appropriate environment - i.e. the same device where FB demonstrates this behavior) ?


  [1]: http://forums.androidcentral.com/samsung-galaxy-note-2/294458-iphone-style-notifications-badge-android-facebook-beta.html
  [2]: http://rootzwiki.com/topic/32894-s3-touchwiz-jelly-bean-addon/

How does Facebook add badge numbers on app icon in Android?

For some users in our application, the email field returns NULL even if the user has granted the email access to the app.
When we check the scope parameter and the validity of the user Token thanks to the Debugger tool, everything is ok. The permission email has been accepted.
But when we ask the Graph API for the email of the user with the valid user token, it does not appear at all.

Is there a way a user could prevent an app from getting his email even if he granted the email permission?

Thanks

Facebook Email field return null (even if the “email” permission is set and accepted)

Are there any **invisible** characters? I have checked Google for invisible characters and ended up with many answers but I&#39;m not sure about those. Can someone on Stack Overflow tell me more about this?

Also I have checked a profile on Facebook and found that the user didn&#39;t have any name to his profile? How can this be possible? Is it some database issue? Hacking or something?

When I searched over Internet, I found that `200D` is an ASCII value with an **invisible** character. Is it true? 


Invisible characters - ASCII

I have followed some Facebook API 3.0 tutorials, including the Login/Logout and the Publish To Feed examples. So the login works this way:

1. App opens, shows a fragment which displays a login button
2. User clicks login, the authentication is done via the referenced FacebookSDK library (com.facebook.widget.LoginActivity) and the provided code using sessions.
3. User is redirected to next screen

I don&#39;t want to make the user to login this way. I want them to use my app without any login/registration, then if they click on a facebook specific feature e.g. share a note on Facebook, then the app should ask them whether they let Facebook use their app or something, you know the usual stuff. Without this I get a nullpointer in the publishFeedDialog() function as session is null, because no login has been made.

So my question is, how can I ignore the SplashFragment with the Login button, so when the user clicks on a Facebook feature in my app, no new screen is displayed with a login button, but only the default Facebook authentication window that users are used to?

Facebook authentication without login button

Since the latest change on Facebook, regarding the appsecret_proof: https://developers.facebook.com/docs/reference/api/securing-graph-api/, we are still unable to download performance reports even after enabling/disabling features from Advanced Settings in our app, or apply the code as described in their document.

We are constantly getting this error:

&gt;{&quot;error&quot;:{&quot;message&quot;:&quot;Invalid appsecret_proof provided in the API argument&quot;,&quot;type&quot;:&quot;GraphMethodException&quot;,&quot;code&quot;:100}}

and I&#39;ve open a confidential bug but no one returns to me with an answer.

I really don&#39;t know what more could we try? 

why do I get &quot;Invalid appsecret_proof provided in the API argument&quot;

Facebook recently changed image sizes for ads, and link posts. This affects also to meta `property=&quot;og:image&quot;`. What is new optimal size for `og:image` at Facebook? The old version was square, now it doesn&#39;t fit anymore, because new size is rectangle.

New og:image size for Facebook share?

I am getting this warning while submitting app to the Apps store through organizer.

    

&gt; The app references non-public selectors in Payload/&lt;Appname&gt;.app/&lt;App
&gt; name&gt;: decoder

i know we get this warning if we use any Third Party API in our application. I have used [SOCKETIO-ObjC][1] library for chat functionality in application. Also used facebook iOS sdk for fb implementation.So i am not getting exactly what causes this warning.! Please find attached [ScreenShot][2] for better understanding


  [1]: https://github.com/pkyeck/socket.IO-objc
  [2]: http://i.stack.imgur.com/FayAJ.png

The app references non-public selectors in Payload/&lt;Appname&gt;.app/&lt;App name&gt;: decoder

I&#39;m trying to make a login with Facebook available in my script. I&#39;ve done everything, but when I attempt to login with a Facebook account I get this error from Facebook:

&gt; Error
&gt; 
&gt; App Not Setup: The developers of this app have not set up this app properly for Facebook Login.

Here&#39;s error screenshot:

![enter image description here][1]

Any ideas?


  [1]: http://i.stack.imgur.com/Cz7co.png

The developers of this app have not set up this app properly for Facebook Login?

How can we include an image in our website to display in WhatsApp when we share a link like this?

[![enter image description here][1]][1]

  [1]: https://i.stack.imgur.com/ERx58.jpg

Provide an image for WhatsApp link sharing

Is it possible to use an SVG for an [Open Graph](http://ogp.me/) image?

I tried it and it didn&#39;t work with Facebook, however I&#39;m unsure if it&#39;s a problem with my SVG or if it&#39;s generally not possible.

I did it like this:

    &lt;meta content=&quot;http://www.example.com/mylogo.svg&quot; property=&quot;og:image&quot;&gt;

Use SVG as og:image

Tried to follow this question : https://stackoverflow.com/questions/19778620/provide-a-picture-for-whatsapp-link-sharing

[![enter image description here][1]][1]


I have created a simple HTML webpage with the basic Facebook metatags:

    &lt;!--FACEBOOK--&gt;
    &lt;meta property=&quot;og:title&quot; content=&quot;San Roque 2014 Pollos&quot; /&gt;
    &lt;meta property=&quot;og:description&quot; content=&quot;Programa de fiestas&quot; /&gt;
    &lt;meta property=&quot;og:image&quot; content=&quot;http://pollosweb.wesped.es/programa_pollos/play.png&quot; /&gt;        

The Facebook linter validate correctly and in Facebook it shows perfect, but when I try to share by WhatsApp the image doesn&#39;t show.

I&#39;m trying it on **WhatsApp on Android**

→ [This is the URL of the Sample Webpage][2]


  [1]: http://i.stack.imgur.com/PahaD.jpg
  [2]: http://pollosweb.wesped.es/whas.html

Showing Thumbnail for link in WhatsApp || og:image meta-tag doesn&#39;t work

I&#39;m new to [Facebook Open Graph Protocol][1]. I have been trying to figure out what the meaning of the HTML `prefix` attribute is. The closest post on Stack Overflow I could find dealing with this subject is [this post][2] which was very helpful as it deals with what the differences are among the various possible syntaxes and which one to use.

However the post does not say anything about what this `prefix` attribute is or what it does. AFAIK this is not a standard HTML attribute. I was able to find [this document][3] which I think is where the W3C defines this attribute but was not able to make any sense of it.

Could someone please explain to me:

  1. What does the `prefix` attribute do?

  2. Can I write

    `&lt;html prefix=&quot;og:http://ogp.me/ns#&quot;&gt;`

  instead of

    `&lt;html prefix=&quot;og: http://ogp.me/ns#&quot;&gt;`

  or would that be a syntax error?

  3. Can I include multiple `prefix` attributes for any given HTML tag?

    `&lt;head prefix=&quot;a: http://www.aaa.com/ns#&quot; prefix=&quot;b: http://www.bbb.com/ns#&quot;&gt;`

    Based on my knowledge of HTML, this would be wrong, but then `prefix` is a nonstandard attribute. So perhaps, what I would like to know is, can I write:

    `&lt;head prefix=&quot;a: http://www.aaa.com/ns# b: http://www.bbb.com/ns#&quot;&gt;`

    or does specifying multiple prefixes at any place in the HTML tree not make sense for some reason?

  4. If this `prefix` tag is not part of the HTML spec, how would submitting a page containing this attribute to a code validator ever result in my code being standards compliant?

Thank you for answering my questions.

  [1]: http://ogp.me/
  [2]: https://stackoverflow.com/questions/8235687/open-graph-namespace-declaration-html-with-xmlns-or-head-prefix
  [3]: http://www.w3.org/TR/rdfa-syntax/#scoping-of-prefix-mappings

Meaning of HTML prefix attribute (Open Graph Protocol)?

I am trying to get my friend name and ids with Graph API v2.0, but data returns empty:

&lt;!-- language: lang-js --&gt;

    {
      &quot;data&quot;: [
      ]
    }

When I was using v1.0, everything was OK with the following request:

&lt;!-- language: lang-c --&gt;

    FBRequest* friendsRequest = [FBRequest requestForMyFriends];
    [friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,
                                                  NSDictionary* result,
                                                  NSError *error) {
        NSArray* friends = [result objectForKey:@&quot;data&quot;];
        NSLog(@&quot;Found: %i friends&quot;, friends.count);
        for (NSDictionary&lt;FBGraphUser&gt;* friend in friends) {
            NSLog(@&quot;I have a friend named %@ with id %@&quot;, friend.name, friend.id);
        }
    }];

But now I cannot get friends!


Facebook Graph API v2.0+ - /me/friends returns empty, or only friends who also use my application

I am having this problem with a brand new project.  This problem happens with both RestKit and Facebook SDK. Strangely SwiftyJSON works just fine. I create a brand new swift project and a Podfile with:

    source &#39;https://github.com/CocoaPods/Specs.git&#39;

    use_frameworks!

    target &#39;test-fb-swift4&#39; do
    	pod &quot;FBSDKCoreKit&quot;
    	pod &#39;SwiftyJSON&#39;, &#39;~&gt; 2.1&#39;
    	pod &#39;RestKit&#39;, :inhibit_warnings =&gt; true
    end
    
    target &#39;test-fb-swift4Tests&#39; do
    
    end

After creating that file I run pod install and reopen xcode with the test-fb-swift4.xcworkspace file.

Now inside my controller I put a import RestKit and I get the error No such module &#39;RestKit&#39;.  I have tried many different ways to format the Podfile even down to very simple versions like:

    source &#39;https://github.com/CocoaPods/Specs.git&#39;
    
    pod &#39;RestKit&#39;

I have tried adding and removing the use_frameworks, with and without the target.  With and without the :inhibit_warnings.

I am running CocoaPods 0.36.4 and tried the latest rc build, same deal.  The Objective-C version from another project runs fine.  This is my first project using Swift and I am stuck on this issue.

No such module &#39;RestKit&#39; with cocoapods and swift

I am trying to use Xcode 8 to build a app with Facebook login using Swift 3. When I switch back iOS Simulator 9.3, it works. In iOS 10, I receive this error:  

    &quot;&quot;fbauth2:/&quot; The operation couldn’t be completed. (OSStatus error -10814.)&quot;

and

    Optional(Error Domain=com.facebook.sdk.login Code=308 &quot;(null)&quot;)

Anyone have solution for this?

### Note 1 :

After debugging, this problem is FBSDK cant update `expect_challange`. Function `SecItemUpdate` inside `security.framework` not work. This is a problem of IOS 10

Content Type	Original Author	Original Content on Stackoverflow
Question	isaacselement	View Question on Stackoverflow
Solution 1 - Ios	Pylyp Dukhov	View Answer on Stackoverflow
Solution 2 - Ios	HRD0701	View Answer on Stackoverflow

IOS Facebook SDK - Post Open Graph and show on Timeline without clicking Activity Log

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

Solution 2 - Ios

$http get parameters does not work

iOS Nested View Controllers view inside UIViewController's view?

Attributions