Bye Bye to NS from Swift!!

Logo NeXTSTEP
Logo NeXTSTEP

Many of the types are bridged to the Swift type like as (e.g., NSString being bridged to String).

Other Objective-C types are bridged to Swift are as follows :

Objective-C Swift
NSString String
NSArray Array
NSDictionary Dictionary
NSData Data
NSError Error (Added Swift 3 – Xcode 8 Beta 4)
NSNotificationCenter NotificationCenter

And more…

Bye Bye to NS from Swift!!

Happy Coding 🙂

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 🙂

Let Us Loop You Out Again – Apple Event Announcements

Apple’s ‘Let Us Loop You In’ On March 21, 2016 a special event by Apple.

Let Us Loop You In


for loopYou in letUS {
break
}

Announcements

  • Apple introduces Liam.
  • Apple announces CareKit.
  • Apple Watch sport and leather bands in new colors for spring.
  • Apple introduces the iPhone SE.
  • iOS 9.3 is available as a free update for everyone beginning today.
  • Apple introduces 9.7-inch iPad Pro.

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