Get Reactions from Timeline Post via Facebook Graph API – Swift – iOS

Facebook Reactions
Facebook Reactions

New version of SDK is 4.16.x(Swift) and Graph API Version is 2.8.

With the Graph API 2.6 Facebook has given support to fetch (read only) the Reactions on Timeline Posts.

Post is updated for iOS 10 and Swift 3

API documentation is available here.

Let’s learn how to get reactions from the post

Install pods

Login with Facebook

I have already written a tutorial on Facebook Login.

Get Facebook Posts via Graph API

We can get the Facebook post via graph API : /me/posts for that we have to add user_posts permission with login.

Get Reactions from one of the Post

We can get the Facebook post reactions via graph API : /{post-id}/reactions. We have to pass parameters like fields and summary as described in getReactions function.

Note : Here I am writing sample for only first post.

Response should be like

Type of reactions : NONE, LIKE, LOVE, WOW, HAHA, SAD, ANGRY

#Like #Share #React 🙂 😛 😀

Happy coding 🙂

Use of Operator Overloading with Swift

apple_swift_logo

I was just going through the Swift document and I found that Swift allow to overload the operator just like as C++ Language. Objective-C doesn’t allow to overload the operator.

As swift document we can also say “Operator Functions”.

Let’s Overload ^ (XOR Operator) to make Power of the value

Function Prototype :

Declare function prototype with left hand side value and right and side value.

Operations in the function :

To make the power of the value we have to apply following operations

Let’s try to use with the operator :

Happy Coding 🙂

Swift 2.2 Warnings and It’s Solutions – Xcode 7.3

apple_swift_logo

Xcode 7.3 came with Swift 2.2 Version. I just updated to Xcode 7.3 and found following warnings because of Swift version change.

List of warnings with it’s solution:

  1. ‘var’ parameters are deprecated and will be removed in Swift 3
  2. Warning Function Var
    Warning Function Var

    Warning with:

    func functionTest(var param:String) {
    	print(param)
    }
    

    Solution:

    func functionTest(param:String) {
    	print(param)
    }
    

    If you want to update that variable inside the function then you have to create copy of that variable to do operations on that.

  3. Use of string literal for Objective-C selectors is deprecated; use ‘#selector’ instead
  4. Warning Selector
    Warning Selector

    Warning with:

    btn.addTarget(self, action: "functionName", forControlEvents: UIControlEvents.TouchUpInside)
    

    OR

    btn.addTarget(self, action: Selector("functionName"), forControlEvents: UIControlEvents.TouchUpInside)
    

    Solution:

    btn.addTarget(self, action: #selector(ViewController.functionName), forControlEvents: UIControlEvents.TouchUpInside)
    

    Apple Documentation : Added information about the #selector syntax for Objective-C selectors to the Selector Expression section.

  5. ‘++’ is deprecated: it will be removed in Swift 3
  6. Warning ++
    Warning ++

    Warning with:

    var i = 0
            
    for str in arrStr {
    	print(str)
    	i++
    }
    

    Solution:

    var i = 0
            
    for str in arrStr {
    	print(str)
    	i += 1
    }
    

    Apple Documentation : Removed discussion of C-style for loops, the ++ prefix and postfix operators, and the — prefix and postfix operators.

  7. C-style for statement is deprecated and will be removed in a future version of Swift
  8. Warning For Statement
    Warning For Statement

    Warning with:

    for var i=0; i<arrStr.count; i += 1 {
    	print(arrStr[i])
    }
    

    Solution:

    for i in 0 ..< arrStr.count {
    	print(arrStr[i])
    }
    

  9. __FILE__ is deprecated and will be removed in Swift 3, please use #file
  10. Warning __FILE__
    Warning __FILE__

    Warning with:

    __FILE__
    

    Solution:

    #file
    

More swift tutorials/articles are available here.

Happy Coding 🙂

Swift Resources #3

Swift Resources
Swift Resources

Swift Useful Resources:

Posted by @NatashaTheRobot in Issue No. 80

If I got time then I will try to post the Swift/Objective-C useful resources everyday.

Happy Coding 🙂

Swift Resources #2 – for Animation

Swift Resources
Swift Resources

Swift Useful Animation Resources:

  • Spring A library to simplify iOS animations in Swift.
  • Animo Bring life to CALayers with SpriteKit-like animation builders
  • Advance A powerful animation framework for iOS and OS X.
  • CKWaveCollectionViewTransition Cool wave like transition between two or more UICollectionView
  • EasyAnimation A Swift library to take the power of UIView.animateWithDuration(_:, animations:…) to a whole new level – layers, springs, chain-able animations and mixing view and layer animations together!
  • Cheetah Easy animation library on iOS with Swift2

If I got time then I will try to post the Swift/Objective-C useful resources everyday.

Happy Coding 🙂