Swift Language Archives - Ashish Kakkad

How to set alternate icon for an iOS app programmatically?

February 7, 2021March 28, 2020 by Ashish Kakkad

Hello iOS Devs,
Hope you guys doing well in this COVID-19 situation. Stay Safe At Home.
In this week Xcode 11.4 released. Many new things came with that. You can check What’s new in Xcode 11.4? blog for the same.

App icon change functionality is available from iOS 10.3. In this tutorial we will learn to set an alternate icon for an iOS application programmatically.

Let’s Start!

Email and password based authentication with Firebase in Swift

February 7, 2021April 28, 2017 by Ashish Kakkad

Firebase Authentication gives us backend services to authenticate users with your app. It provides SDKs and ready-made UI libraries. It supports authentication using passwords, and other providers like Google, Facebook and Twitter, Github, and more.
firebase-authentication

What's new in Xcode 8.3?

February 7, 2021February 13, 2017 by Ashish Kakkad

Swift 2.3 Deprecation

Xcode 8.3 beta 2 no longer supports Swift 2.3. Please migrate your projects containing Swift 2.3 code to Swift 3 syntax by opening the project and choosing Edit > Convert > To Current Swift Syntax.

Other Deprecations and Removal Notices

The Automation instrument has been removed from Instruments. Use Xcode’s UI Testing in its place.

Organizer

The Xcode Organizer now supports exporting tvOS apps for Enterprise distribution.

Testing

Added the XCUISiriService class to XCTest for writing tests which activate Siri with a voice recognition string, and queries for elements in the Siri UI. Use the class to write UI tests for Intents and Intents UI extensions.

Swift Compiler

The Swift compiler can now automatically precompile Objective-C bridging headers, which can speed up Debug configuration builds (or other non-WMO builds) of mixed-source projects with large bridging headers. This feature is still experimental, and is disabled by default but can be enabled with the “Precompile Bridging Header” (SWIFT_PRECOMPILE_BRIDGING_HEADER) build configuration setting within Xcode.

Provisioning

Changed the user interface for managing signing certificates and provisioning profiles. Certificates are managed from the Accounts preferences pane by selecting a team and clicking Manage Certificates. Automatically managing signing is recommended, however if your app requires manually signing provisioning profiles are managed in the General tab of the project editor. Use the Provisioning Profile dropdown to import or download profiles. In addition it displays profiles that match the current signing configuration of the target.

Simulator

You can invoke Siri using Hardware > Siri after enabling Siri in the Settings app on Simulator.

Others

Xcode 8.3 includes Swift 3.1 which is intended to be source compatible with Swift 3.0.
Constrained extensions allow same-type constraints between generic parameters and concrete types. For example, the following code defines an extension on Array with Int elements:

Swift

extension Array where Element == Int { }

1

extension Array where Element == Int { }
The Swift compiler now raises an error for modifications of a let property or variable of protocol type after initialization. For example, the following code that compiled in previous versions will now raise an error:

Swift

protocol P { mutating func f() } extension Int: P { mutating func f() { self += 1 } } func foo(x: Int) { let y: P y = x y.f() }

1
2
3
4
5
6
7
8
9
10
11

protocol P {
mutating func f()
}
extension Int: P {
mutating func f() { self += 1 }
}
func foo(x: Int) {
let y: P
y = x
y.f()
}

Code that successfully compiled in previous releases may fail after upgrading.

Interface Builder

NSTextField objects created in Interface Builder now have allowsCharacterPickerTouchBarItem turned off by default.

Currently latest beta version is Xcode 8.3 Beta 3. I will update this blog as per versions of Beta.
Happy Coding 🙂

Push Notifications in iOS 10 [Swift]

February 7, 2021September 29, 2016 by Ashish Kakkad

The new framework called “UserNotifications” is introduced with iOS 10 SDK. The UserNotifications framework (UserNotifications.framework) supports the delivery and handling of local and remote notifications.

So, Let see what we have to change to get the push notifications in iOS 10.

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 🙂

iOS 10 New Frameworks

February 7, 2021July 12, 2016 by Ashish Kakkad

iOS10

CallKit
The CallKit framework (CallKit.framework) lets VoIP apps integrate with the iPhone UI and give users a great experience. Use this framework to let users view and answer incoming VoIP calls on the lock screen and manage contacts from VoIP calls in the Phone app’s Favorites and Recents views.

Intents
The Intents framework (Intents.framework) supports the handling of SiriKit interactions.

IntentsUI
The Intents UI framework (IntentsUI.framework) supports the creation of an Intents UI extension, which is an optional app extension that displays custom content in the Siri or Maps interfaces.

Messages
To develop an iMessage app, you use the APIs in the Messages framework (Messages.framework) and To create app extensions that interact with the Messages app, allowing users to send text, stickers, media files, and interactive messages.

Speech
Using the APIs in the Speech framework (Speech.framework), you can perform speech transcription of both real-time and recorded audio.

UserNotifications
User Notifications framework (UserNotifications.framework), which supports the delivery and handling of local and remote notifications.

UserNotificationsUI
User Notifications UI framework (UserNotificationsUI.framework) lets you customize the appearance of local and remote notifications when they appear on the user’s device.

VideoSubscriberAccount
Video Subscriber Account framework (VideoSubscriberAccount.framework) to help apps that support authenticated streaming or authenticated video on demand (also known as TV Everywhere) authenticate with their cable or satellite TV provider.

References :

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 2.3 Deprecation

Other Deprecations and Removal Notices

Organizer

Testing

Swift Compiler

Provisioning

Simulator

Others

Interface Builder

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

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