Swift Language Archives - Page 4 of 7

Steps to use Legacy Swift in Xcode 8

February 7, 2021September 21, 2016 by Ashish Kakkad

Xcode 8.0 is released with Swift 3 and Swift 2.3 compatibility.

If you already having a project with Swift 2.2 language support with Xcode 7.3.1 and you open the project in Xcode 8.0 then, you will be prompted for the migration assistant to do a migration pass. The assistant can also be invoked manually from the menu Edit -> Convert -> To Current Swift Syntax…

Use Swift 2.3 Modifies your project to enable the Use Legacy Swift build setting and provides source changes to be able to build against the new SDKs.
Use Swift 3 This is recommended. You will get source changes to be able to build your project using Swift 3 and take advantage of all the new features in Xcode 8.0.

If you want to work with new project and you want to work with Legacy code (Swift 2.3) or 3.0 then you can do settings from build settings as follows :

Build Settings - Swift Legacy Code — Build Settings – Swift Legacy Code

Default Setting is No (Swift 3). But if you want to do legacy code (Swift 2.3) then you have to select Yes (Swift 2.3).
Make sure you do this setting by starting of new project because many methods will change.
For Example :
Swift 3 Code
[code language=”obj-c”]
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
return true
}
[/code]
Swift 2.3 Code
[code language=”obj-c”]
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool {
return true
}
[/code]
As per my opinion Swift 3 is recommended.
Happy Coding 🙂

Bye Bye to NS from Swift!!

February 7, 2021August 5, 2016 by Ashish Kakkad

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 🙂

Best Tweets of iOS 10 & Swift 3 Updates

February 7, 2021June 20, 2016 by Ashish Kakkad

Use a struct instead of a string as your dictionary key for better performance ? #swiftlang #WWDC16 pic.twitter.com/9ITOLwyHox

— NatashaTheRobot (@NatashaTheRobot) June 19, 2016

So excited about the Swift Performance session already!#WWDC16 #swiftlang pic.twitter.com/vJAjrAJJjN

— NatashaTheRobot (@NatashaTheRobot) June 19, 2016

You can now know when the user dismisses your notification ? #WWDC16 #iOS10 #iosdev

— NatashaTheRobot (@NatashaTheRobot) June 19, 2016

Media Attachments in Notifications ?? #WWDC16 #iOS10 #iosdev pic.twitter.com/o7EopfE9wg

— NatashaTheRobot (@NatashaTheRobot) June 19, 2016

Whoa! We can now access the users notification settings for our app ??? #WWDC16 #iOS10 #iosdev pic.twitter.com/8fo9faLA6T

— NatashaTheRobot (@NatashaTheRobot) June 19, 2016

Oooh #keyPath in Swift 3.0 ? #byebyestrings pic.twitter.com/E9mj9NH7al

— Ayaka Nonaka (@ayanonagon) June 18, 2016

Now that I’ve had some time to recover from WWDC, I highlighted some of my favorite ? 3.0 features. Hope you enjoy! https://t.co/hm77J2NZV3

— Ayaka Nonaka (@ayanonagon) June 19, 2016

replacement for the graphics context creation pic.twitter.com/687sZCsxoD

— Alejandro Martinez (@alexito4) June 19, 2016

Before and after of Core Graphics (old C API) in Swift thanks to compiler magic using NS_SWIFT_NAME in Swift 3.0! ? pic.twitter.com/uJYANo5wqU

— Ayaka Nonaka (@ayanonagon) June 18, 2016

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

February 7, 2021April 13, 2016 by Ashish Kakkad

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

# Uncomment the next line to define a global platform for your project
platform :ios, '9.0'
target 'FBSwiftLogin' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!
  # Pods for FBSwiftLogin
    pod 'FacebookCore'
    pod 'FacebookLogin'
end

# Uncomment the next line to define a global platform for your project

platform :ios, '9.0'

target 'FBSwiftLogin' do

# Comment the next line if you're not using Swift and don't want to use dynamic frameworks

use_frameworks!

# Pods for FBSwiftLogin

pod 'FacebookCore'

pod 'FacebookLogin'

end

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.

func getFacebookUserPosts() {
    FBSDKGraphRequest(graphPath: "/me/posts", parameters: nil, httpMethod: "GET").start(completionHandler: { (connection, result, error) in
        if (error == nil){
            print(result)
        }
    })
}

func getFacebookUserPosts() {

FBSDKGraphRequest(graphPath: "/me/posts", parameters: nil, httpMethod: "GET").start(completionHandler: { (connection, result, error) in

if (error == nil){

print(result)

}

})

}

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.

func getFacebookUserPosts() {
    var strGraphPath : String = ""
    FBSDKGraphRequest(graphPath: "/me/posts", parameters: nil, httpMethod: "GET").start(completionHandler: { (connection, result, error) in
        if (error == nil){
            print(result)
            let data = (result as! [String : Any])["data"] as! [[String : Any]]
            if(data.count > 0) {
                let strId = data[0]["id"] as! String
                strGraphPath = "/"+strId+"/reactions"
                self.getReactions(strGraphPath)
            }
        }
    })
}
func getReactions(_ strGraphPath:String) {
    FBSDKGraphRequest(graphPath: strGraphPath, parameters: ["fields":"id, name, type", "summary":"total_count, viewer_reaction"], httpMethod: "GET").start(completionHandler: { (connection, result, error) in
        if (error == nil){
            print(result)
        }
    })
}

func getFacebookUserPosts() {

var strGraphPath : String = ""

FBSDKGraphRequest(graphPath: "/me/posts", parameters: nil, httpMethod: "GET").start(completionHandler: { (connection, result, error) in

if (error == nil){

print(result)

let data = (result as! [String : Any])["data"] as! [[String : Any]]

if(data.count > 0) {

let strId = data[0]["id"] as! String

strGraphPath = "/"+strId+"/reactions"

self.getReactions(strGraphPath)

}

})

}

func getReactions(_ strGraphPath:String) {

FBSDKGraphRequest(graphPath: strGraphPath, parameters: ["fields":"id, name, type", "summary":"total_count, viewer_reaction"], httpMethod: "GET").start(completionHandler: { (connection, result, error) in

if (error == nil){

print(result)

}

})

}

Response should be like

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

{
    data =     (
        {
            id = ACCOUNT_ID;
            name = "NAME";
            type = HAHA;
        },
        {
            id = ACCOUNT_ID;
            name = "NAME";
            type = LIKE;
        }
    );
    paging =     {
        cursors =         {
            after = REFERENCE_ID;
            before = REFERENCE_ID;
        };
        next = "NEXT_REFERENCE_LINK";
    };
    summary =     {
        "total_count" = 56;
        "viewer_reaction" = NONE;
    };
}

{

data = (

{

id = ACCOUNT_ID;

name = "NAME";

type = HAHA;

{

id = ACCOUNT_ID;

name = "NAME";

type = LIKE;

}

);

paging = {

cursors = {

after = REFERENCE_ID;

before = REFERENCE_ID;

};

next = "NEXT_REFERENCE_LINK";

};

summary = {

"total_count" = 56;

"viewer_reaction" = NONE;

};

}

#Like #Share #React 🙂 😛 😀
Happy coding 🙂

Use of Operator Overloading with Swift

February 7, 2021April 5, 2016 by Ashish Kakkad

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.

func ^(lhs: Int, rhs: Int) -> Int {
}

1 2	func ^(lhs: Int, rhs: Int) -> Int { }

Operations in the function :
To make the power of the value we have to apply following operations

func ^(lhs: Int, rhs: Int) -> Int {
    if(rhs == 0) {
        return 1
    }
    else {
        var result = lhs
        for _ in 1 ..< rhs  {
            result *= lhs
        }
        return result
    }
}

func ^(lhs: Int, rhs: Int) -> Int {

if(rhs == 0) {

return 1

}

else {

var result = lhs

for _ in 1 ..< rhs {

result *= lhs

}

return result

}

Let’s try to use with the operator :

let a = 2^2 //4
let b = 2^4 //16
let c = 3^3 //27

let a = 2^2 //4

let b = 2^4 //16

let c = 3^3 //27

Happy Coding 🙂

Swift 2.2 Warnings and It's Solutions – Xcode 7.3

February 7, 2021March 30, 2016 by Ashish Kakkad

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:

‘var’ parameters are deprecated and will be removed in Swift 3

Use of string literal for Objective-C selectors is deprecated; use ‘#selector’ instead

‘++’ is deprecated: it will be removed in Swift 3

C-style for statement is deprecated and will be removed in a future version of Swift

FILE is deprecated and will be removed in Swift 3, please use #file

More swift tutorials/articles are available here.
Happy Coding 🙂

Swift Resources #3

February 7, 2021March 29, 2016 by Ashish Kakkad

Swift Useful Resources:

Top 100 Best Blogs for iOS Developers
SwiftyStoreKit Lightweight In App Purchases Swift framework for iOS 8.0+ and OSX 9.0+.
Sensitive Fresh look at work with gestures in Swift.
NumberMorphView A label view for displaying numbers which can transition or animate using a technique called number tweening or number morphing.
SwiftImageProcessing This project demonstrates how to do pixel operations in swift.
Gifu High-performance animated GIF support for iOS in Swift.

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

February 7, 2021March 15, 2016 by Ashish Kakkad

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 🙂

Swift Resources #1

February 7, 2021March 14, 2016 by Ashish Kakkad

Swift Useful Resources:

FolioReaderKit FolioReaderKit is an ePub reader and parser framework for iOS written in Swift.
KZLinkedConsole Clickable links in your Xcode console, so you never wonder which class logged the message.
Chatto A lightweight framework to build chat applications, made in Swift.
PFColorHash Generate color based on the given string.
SwiftCharts Easy to use and highly customizable charts library for iOS.

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

How to create a wrapper for Alamofire and SwiftyJSON? Swift – iOS

February 7, 2021March 9, 2016 by Ashish Kakkad

This blogpost updated with Swift 3 – Xcode 8 – iOS 10 – Alamofire 4.0

I have posted a basic tutorial about Alamofire and SwiftyJSON How to use Alamofire and SwiftyJSON with Swift?
And some day before we have learned about Use of Blocks(Closures) or Completion Handlers with Function in Swift – iOS
Let’s combine both the topics to make a WRAPPER of Alamofire and SwiftyJSON.

Let’s learn how to get reactions from the post

Install pods

Login with Facebook

Get Facebook Posts via Graph API

Get Reactions from one of the Post

Response should be like

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

List of warnings with it’s solution:

‘var’ parameters are deprecated and will be removed in Swift 3

Use of string literal for Objective-C selectors is deprecated; use ‘#selector’ instead

‘++’ is deprecated: it will be removed in Swift 3

C-style for statement is deprecated and will be removed in a future version of Swift

__FILE__ is deprecated and will be removed in Swift 3, please use #file

Swift Useful Resources:

Swift Useful Animation Resources:

Swift Useful Resources:

FILE is deprecated and will be removed in Swift 3, please use #file