iOS Archives - Page 7 of 8

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.

Use of Blocks(Closures) or Completion Handlers with Function in Swift – iOS

February 7, 2021February 28, 2016 by Ashish Kakkad

Blocks in Objective-C

In Objective-C we are using the blocks(completion handlers) with functions as follows :

[code language=”obj-c”]
– (void)yourFunctionName:(NSString *)yourString withCompletionHandler:(void (^)(NSString *yourResult))block;
[/code]

Closures in Swift

Closures are self-contained blocks of functionality that can be passed around and used in your code. Closures in Swift are similar to blocks in C and Objective-C and to lambdas in other programming languages.

Syntax with Function

[code language=”obj-c”]
func yourFunctionName(parameter:Type, … , withCompletionHandler:(result:Type) -> Void)
[/code]
For more closure syntax : goshdarnclosuresyntax.com

Example

Function Definition:
[code language=”obj-c”]
func closureReturn(isTest:Bool, withCompletionHandler:(result:String) -> Void) {
if(isTest){
withCompletionHandler(result: "Yes")
}
else{
withCompletionHandler(result: "No")
}
}
[/code]
Calling Function:
[code language=”obj-c”]
closureReturn(true) { (result) -> Void in
print(result)
}
[/code]
Output should be respective to value true/false.

In next post I will write a tutorial on a wrapper class for Alamofire with use of SwiftyJSON by using closures.

Happy Coding 🙂

Parse – See You Again – News & Useful Migration Tool & Alternative Links

February 7, 2021February 23, 2016 by Ashish Kakkad

Parse

Parse is Mobile Backend as a Service (MBaaS)
They have written :

We have a difficult announcement to make. Beginning today we’re winding down the Parse service, and Parse will be fully retired after a year-long period ending on January 28, 2017. We’re proud that we’ve been able to help so many of you build great mobile apps, but we need to focus our resources elsewhere.

News

Migration Tools and Alternatives

Thank you Parse for your great service.
See you again 🙂
Anything should be happen you have to learn something new anytime 😉
Enjoy iOS enjoy life 🙂

Issue "This certificate has an invalid issuer" because of Apple Worldwide Developer Relations Intermediate Certificate Expiration

February 7, 2021February 15, 2016 by Ashish Kakkad

I am posting this article because many users are facing this issue like “This certificate has an invalid issuer”

As apple have written :

The Apple Worldwide Developer Relations Certification Intermediate Certificate expires soon and we’ve issued a renewed certificate that must be included when signing all new Apple Wallet Passes, push packages for Safari Push Notifications, and Safari Extensions starting February 14, 2016.

As I found an answer in post on the Stack Overflow : This certificate has an invalid issuer regrading Intermediate Certificate Expiration

Follow this steps :

Open KeyChain access, Delete “Apple world wide Developer relations certification authority” (Which expires on 14th Feb 2016) from both “Login” and “System” sections. If you can’t find it, use “Show Expired Certificates” in the View menu
Download AppleWWDRCA.cer and add it to Keychain access > certificates (which expires on 8th Feb 2023)
Everything should be back to normal and working now (Check the certificate is valid and it should be display in green)

Create your own CocoaPod – Swift / Objective-C

February 7, 2021January 23, 2016 by Ashish Kakkad

CocoaPods is a dependency manager for Swift and Objective-C Cocoa projects. It has over ten thousand libraries and can help you scale your projects elegantly.

CocoaPods Logo

Lets create a CocoaPod

Open your terminal and follow the steps:

Work with Core Data in Swift Language

February 7, 2021January 6, 2016 by Ashish Kakkad

Lets take a brief idea about how to use core data with swift language.

Create a new project by check on Use Core Data.

It will create the basic methods of core data in to the AppDelegate.swift

There is core data model called {YOUR-PROJECT.xcdatamodeld} will be there with the project.

It will be look like as follows :

How to use Alamofire and SwiftyJSON with Swift? – Swift 3 – iOS 10 – Xcode 8

February 7, 2021October 6, 2015 by Ashish Kakkad

Alamofire is an HTTP networking library written in Swift.
SwiftyJSON makes it easy to deal with JSON data in Swift.

Create your own Slider menu (Drawer) in Swift

February 7, 2021September 28, 2015 by Ashish Kakkad

This article is updated with Swift 4 – Xcode 9 – iOS 11

Why to use a library everytime?

Let’s create our own Slide Menu (Drawer) in Swift 4.
1. Create New Project in Xcode 9 with Swift Language
2. Design the Menu in UIViewController

Declaration of Variables and Protocols (Delegate) :

protocol SlideMenuDelegate {
    func slideMenuItemSelectedAtIndex(_ index : Int32)
}
class MenuViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
    /**
    *  Array to display menu options
    */
    @IBOutlet var tblMenuOptions : UITableView!
    /**
    *  Transparent button to hide menu
    */
    @IBOutlet var btnCloseMenuOverlay : UIButton!
    /**
    *  Array containing menu options
    */
    var arrayMenuOptions = [Dictionary&lt;String,String&gt;]()
    /**
    *  Menu button which was tapped to display the menu
    */
    var btnMenu : UIButton!
    /**
    *  Delegate of the MenuVC
    */
    var delegate : SlideMenuDelegate?
}

protocol SlideMenuDelegate {

func slideMenuItemSelectedAtIndex(_ index : Int32)

}

class MenuViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {

/**

* Array to display menu options

@IBOutlet var tblMenuOptions : UITableView!

/**

* Transparent button to hide menu

@IBOutlet var btnCloseMenuOverlay : UIButton!

/**

* Array containing menu options

var arrayMenuOptions = [Dictionary<String,String>]()

/**

* Menu button which was tapped to display the menu

var btnMenu : UIButton!

/**

* Delegate of the MenuVC

var delegate : SlideMenuDelegate?

}

Following method is for updating the Items in the Menu :

func updateArrayMenuOptions(){
    arrayMenuOptions.append(["title":"Home", "icon":"HomeIcon"])
    arrayMenuOptions.append(["title":"Play", "icon":"PlayIcon"])
    tblMenuOptions.reloadData()
}

func updateArrayMenuOptions(){

arrayMenuOptions.append(["title":"Home", "icon":"HomeIcon"])

arrayMenuOptions.append(["title":"Play", "icon":"PlayIcon"])

tblMenuOptions.reloadData()

}

Following method is for click event and animation :

@IBAction func onCloseMenuClick(_ button:UIButton!){
    btnMenu.tag = 0
    if (self.delegate != nil) {
        var index = Int32(button.tag)
        if(button == self.btnCloseMenuOverlay){
            index = -1
        }
        delegate?.slideMenuItemSelectedAtIndex(index)
    }
    UIView.animate(withDuration: 0.3, animations: { () -&gt; Void in
        self.view.frame = CGRect(x: -UIScreen.main.bounds.size.width, y: 0, width: UIScreen.main.bounds.size.width,height: UIScreen.main.bounds.size.height)
        self.view.layoutIfNeeded()
        self.view.backgroundColor = UIColor.clear
        }, completion: { (finished) -&gt; Void in
            self.view.removeFromSuperview()
            self.removeFromParentViewController()
    })
}

@IBAction func onCloseMenuClick(_ button:UIButton!){

btnMenu.tag = 0

if (self.delegate != nil) {

var index = Int32(button.tag)

if(button == self.btnCloseMenuOverlay){

index = -1

}

delegate?.slideMenuItemSelectedAtIndex(index)

}

UIView.animate(withDuration: 0.3, animations: { () -> Void in

self.view.frame = CGRect(x: -UIScreen.main.bounds.size.width, y: 0, width: UIScreen.main.bounds.size.width,height: UIScreen.main.bounds.size.height)

self.view.layoutIfNeeded()

self.view.backgroundColor = UIColor.clear

}, completion: { (finished) -> Void in

self.view.removeFromSuperview()

self.removeFromParentViewController()

})

}

3. Now we will create a Base UIViewController to use anywhere in the project which control the delegate of menu.
First we will create this 3 lines Drawer Icon via Code

func addSlideMenuButton(){
    let btnShowMenu = UIButton(type: UIButtonType.system)
    btnShowMenu.setImage(self.defaultMenuImage(), for: UIControlState())
    btnShowMenu.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
    btnShowMenu.addTarget(self, action: #selector(BaseViewController.onSlideMenuButtonPressed(_:)), for: UIControlEvents.touchUpInside)
    let customBarItem = UIBarButtonItem(customView: btnShowMenu)
    self.navigationItem.leftBarButtonItem = customBarItem;
}
func defaultMenuImage() -&gt; UIImage {
    var defaultMenuImage = UIImage()
    UIGraphicsBeginImageContextWithOptions(CGSize(width: 30, height: 22), false, 0.0)
    UIColor.black.setFill()
    UIBezierPath(rect: CGRect(x: 0, y: 3, width: 30, height: 1)).fill()
    UIBezierPath(rect: CGRect(x: 0, y: 10, width: 30, height: 1)).fill()
    UIBezierPath(rect: CGRect(x: 0, y: 17, width: 30, height: 1)).fill()
    UIColor.white.setFill()
    UIBezierPath(rect: CGRect(x: 0, y: 4, width: 30, height: 1)).fill()
    UIBezierPath(rect: CGRect(x: 0, y: 11,  width: 30, height: 1)).fill()
    UIBezierPath(rect: CGRect(x: 0, y: 18, width: 30, height: 1)).fill()
    defaultMenuImage = UIGraphicsGetImageFromCurrentImageContext()!
    UIGraphicsEndImageContext()
    return defaultMenuImage
}

func addSlideMenuButton(){

let btnShowMenu = UIButton(type: UIButtonType.system)

btnShowMenu.setImage(self.defaultMenuImage(), for: UIControlState())

btnShowMenu.frame = CGRect(x: 0, y: 0, width: 30, height: 30)

btnShowMenu.addTarget(self, action: #selector(BaseViewController.onSlideMenuButtonPressed(_:)), for: UIControlEvents.touchUpInside)

let customBarItem = UIBarButtonItem(customView: btnShowMenu)

self.navigationItem.leftBarButtonItem = customBarItem;

}

func defaultMenuImage() -> UIImage {

var defaultMenuImage = UIImage()

UIGraphicsBeginImageContextWithOptions(CGSize(width: 30, height: 22), false, 0.0)

UIColor.black.setFill()

UIBezierPath(rect: CGRect(x: 0, y: 3, width: 30, height: 1)).fill()

UIBezierPath(rect: CGRect(x: 0, y: 10, width: 30, height: 1)).fill()

UIBezierPath(rect: CGRect(x: 0, y: 17, width: 30, height: 1)).fill()

UIColor.white.setFill()

UIBezierPath(rect: CGRect(x: 0, y: 4, width: 30, height: 1)).fill()

UIBezierPath(rect: CGRect(x: 0, y: 11, width: 30, height: 1)).fill()

UIBezierPath(rect: CGRect(x: 0, y: 18, width: 30, height: 1)).fill()

defaultMenuImage = UIGraphicsGetImageFromCurrentImageContext()!

UIGraphicsEndImageContext()

return defaultMenuImage

}

Delegate (Protocol) method call :

func slideMenuItemSelectedAtIndex(_ index: Int32) {
    let topViewController : UIViewController = self.navigationController!.topViewController!
    print("View Controller is : \(topViewController) \n", terminator: "")
    switch(index){
    case 0:
        print("Home\n", terminator: "")
        self.openViewControllerBasedOnIdentifier("Home")
        break
    case 1:
        print("Play\n", terminator: "")
        self.openViewControllerBasedOnIdentifier("PlayVC")
        break
    default:
        print("default\n", terminator: "")
    }
}

func slideMenuItemSelectedAtIndex(_ index: Int32) {

let topViewController : UIViewController = self.navigationController!.topViewController!

print("View Controller is : \(topViewController) \n", terminator: "")

switch(index){

case 0:

print("Home\n", terminator: "")

self.openViewControllerBasedOnIdentifier("Home")

break

case 1:

print("Play\n", terminator: "")

self.openViewControllerBasedOnIdentifier("PlayVC")

break

default:

print("default\n", terminator: "")

}

To open a view controller by identifier :
Set the Restoration Identifier and Storyboard Identifier. If current view is open then we will not open it once again for that we have to check via Restoration Identifier.

func openViewControllerBasedOnIdentifier(_ strIdentifier:String){
    let destViewController : UIViewController = self.storyboard!.instantiateViewController(withIdentifier: strIdentifier)
    let topViewController : UIViewController = self.navigationController!.topViewController!
    if (topViewController.restorationIdentifier! == destViewController.restorationIdentifier!){
        print("Same VC")
    } else {
        self.navigationController!.pushViewController(destViewController, animated: true)
    }
}

func openViewControllerBasedOnIdentifier(_ strIdentifier:String){

let destViewController : UIViewController = self.storyboard!.instantiateViewController(withIdentifier: strIdentifier)

let topViewController : UIViewController = self.navigationController!.topViewController!

if (topViewController.restorationIdentifier! == destViewController.restorationIdentifier!){

print("Same VC")

} else {

self.navigationController!.pushViewController(destViewController, animated: true)

}

4. Now We will assign this drawer to any of the UIViewController
We have to use only one method to add drawer (slide menu) self.addSlideMenuButton()

import UIKit
class HomeVC: BaseViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        addSlideMenuButton()
    }
}

import UIKit

class HomeVC: BaseViewController {

override func viewDidLoad() {

super.viewDidLoad()

addSlideMenuButton()

}

Source Code is available at the Github AKSwiftSlideMenu

You can download for versions of Swift 2, Swift 3 or Swift 4. From Releases Tab at GitHub AKSwiftSlideMenu.

I have uploaded a video for easy way to integrate AKSwiftSlideMenu in your project :

Check other blog posts about Swift

Happy Coding 🙂