iOS

iOS Info.plist Usage Description

Check out this developer.apple.com link for the full list of property list key references. Full List: Apple Music:

<key>NSAppleMusicUsageDescription</key>
<string>My description about why I need this capability</string>

1 2	<key>NSAppleMusicUsageDescription</key> <string>My description about why I need this capability</string>

Bluetooth:

<key>NSBluetoothPeripheralUsageDescription</key>  
<string>My description about why I need this capability</string>

1 2	<key>NSBluetoothPeripheralUsageDescription</key> <string>My description about why I need this capability</string>

Calendar:

<span class="tag"><key></span><span class="pln">NSCalendarsUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSCalendarsUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Camera:

<span class="tag"><key></span><span class="pln">NSCameraUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSCameraUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Contacts:

<span class="tag"><key></span><span class="pln">NSContactsUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSContactsUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

FaceID:

<span class="tag"><key></span><span class="pln">NSFaceIDUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSFaceIDUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Health Share:

<span class="tag"><key></span><span class="pln">NSHealthShareUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSHealthShareUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Health Update:

<span class="tag"><key></span><span class="pln">NSHealthUpdateUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSHealthUpdateUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Home Kit:

<span class="tag"><key></span><span class="pln">NSHomeKitUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSHomeKitUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Location:

<span class="tag"><key></span><span class="pln">NSLocationUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSLocationUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Location (Always):

<span class="tag"><key></span><span class="pln">NSLocationAlwaysUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSLocationAlwaysUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Location (When in use):

<span class="tag"><key></span><span class="pln">NSLocationWhenInUseUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSLocationWhenInUseUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Microphone:

<span class="tag"><key></span><span class="pln">NSMicrophoneUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSMicrophoneUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Motion (Accelerometer):

<span class="tag"><key></span><span class="pln">NSMotionUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NSMotionUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

NFC (Near-field communication):

<span class="tag"><key></span><span class="pln">NFCReaderUsageDescription</span><span class="tag"></key></span>
<span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

1 2	<span class="tag"><key></span><span class="pln">NFCReaderUsageDescription</span><span class="tag"></key></span> <span class="tag"><string></span><span class="pln">My description about why I need this capability</span><span class="tag"></string></span>

Photo Library: […]

shubham sharma July 19, 2019 Read More

Swift Date format refrence

Characters Example Description Year y 2008 Year, no padding yy 08 Year, two digits (padding with a zero if necessary) yyyy 2008 Year, minimum of four digits (padding with zeros if necessary) Quarter Q 4 The quarter of the year. Use QQ if you want zero padding. QQQ Q4 Quarter including “Q” QQQQ 4th quarter […]

shubham sharma July 4, 2019 Read More

iOS Date picker view

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var textField: UITextField!
    
    fileprivate var tmpSelectedDate:String = ""
    
    override func viewDidLoad() {
        super.viewDidLoad()
        pickerViewInit()
        // Do any additional setup after loading the view.
    }
}

extension ViewController  {
    
    //MARK:pickerView
    //*****************************************************
    func pickerViewInit(){
        //Create a parent view for UIPickerView
        let pickerViewWrpper = UIView(frame: CGRect(x:0, y: 200, width: self.view.bounds.width, height: 200))
        pickerViewWrpper.backgroundColor = .clear
        
        //create UIPickerView object
        let datepicker = UIDatePicker( )
        
        datepicker.backgroundColor = .clear
        //add UIPickerView into parent view
        pickerViewWrpper.addSubview(datepicker)
        
        datepicker.datePickerMode = UIDatePicker.Mode.date
        
        //add some constraint to UIPickerView
        datepicker.translatesAutoresizingMaskIntoConstraints = false
        datepicker.leadingAnchor.constraint(equalTo: pickerViewWrpper.leadingAnchor, constant: 0).isActive = true
        datepicker.trailingAnchor.constraint(equalTo: pickerViewWrpper.trailingAnchor, constant: 0).isActive = true
        datepicker.bottomAnchor.constraint(equalTo: pickerViewWrpper.bottomAnchor, constant: 0).isActive = true
        datepicker.heightAnchor.constraint(equalToConstant: 170).isActive = true
        datepicker.addTarget(self, action: #selector(dateChanged(_:)), for: .valueChanged)
        //set data source and other stuff
        
        
        //create UIToolbar object
        let toolBar = UIToolbar()
        
        //add UIToolbar into parent view
        pickerViewWrpper.addSubview(toolBar)
        //add some constraint to UIToolbar
        toolBar.translatesAutoresizingMaskIntoConstraints = false
        toolBar.leadingAnchor.constraint(equalTo: pickerViewWrpper.leadingAnchor, constant: 0).isActive = true
        toolBar.trailingAnchor.constraint(equalTo: pickerViewWrpper.trailingAnchor, constant: 0).isActive = true
        toolBar.topAnchor.constraint(equalTo: pickerViewWrpper.topAnchor, constant: 0).isActive = true
        toolBar.heightAnchor.constraint(equalToConstant: 30).isActive = true
        
        
        //add some style to UIToolbar
        toolBar.barStyle = UIBarStyle.default
        toolBar.isTranslucent = true
        //        toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
        toolBar.sizeToFit()
        
        //int done and cancelButton buttons
        let doneButton = UIBarButtonItem(title: "Select", style: UIBarButtonItem.Style.plain, target: self, action: #selector(donePicker))
        let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: nil, action: nil)
        let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItem.Style.plain, target: self, action: #selector(cancelPicker))
        
        toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
        toolBar.isUserInteractionEnabled = true
        
        
        //set inputView when we enter in text field this view will show insted of keyboard
        textField.inputView = pickerViewWrpper
    }
    
    @objc func donePicker(){
        textField.resignFirstResponder()
        textField.text = tmpSelectedDate
    }
    @objc func cancelPicker(){
        textField.resignFirstResponder()
    }
    @objc func dateChanged(_ sender: UIDatePicker) {
        
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "dd/MM/yyyy"
        tmpSelectedDate = dateFormatter.string(from: sender.date)
        
        
        //Uncomment if user wants to update text field date same time when user change date
        //        childDOB.text = dateFormatter.string(from: sender.date)
        
    }
    //*****************************************************
    //End pickerView
    
}

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var textField: UITextField!

fileprivate var tmpSelectedDate:String = ""

override func viewDidLoad() {

super.viewDidLoad()

pickerViewInit()

// Do any additional setup after loading the view.

}

extension ViewController {

//MARK:pickerView

//*****************************************************

func pickerViewInit(){

//Create a parent view for UIPickerView

let pickerViewWrpper = UIView(frame: CGRect(x:0, y: 200, width: self.view.bounds.width, height: 200))

pickerViewWrpper.backgroundColor = .clear

//create UIPickerView object

let datepicker = UIDatePicker( )

datepicker.backgroundColor = .clear

//add UIPickerView into parent view

pickerViewWrpper.addSubview(datepicker)

datepicker.datePickerMode = UIDatePicker.Mode.date

//add some constraint to UIPickerView

datepicker.translatesAutoresizingMaskIntoConstraints = false

datepicker.leadingAnchor.constraint(equalTo: pickerViewWrpper.leadingAnchor, constant: 0).isActive = true

datepicker.trailingAnchor.constraint(equalTo: pickerViewWrpper.trailingAnchor, constant: 0).isActive = true

datepicker.bottomAnchor.constraint(equalTo: pickerViewWrpper.bottomAnchor, constant: 0).isActive = true

datepicker.heightAnchor.constraint(equalToConstant: 170).isActive = true

datepicker.addTarget(self, action: #selector(dateChanged(_:)), for: .valueChanged)

//set data source and other stuff

//create UIToolbar object

let toolBar = UIToolbar()

//add UIToolbar into parent view

pickerViewWrpper.addSubview(toolBar)

//add some constraint to UIToolbar

toolBar.translatesAutoresizingMaskIntoConstraints = false

toolBar.leadingAnchor.constraint(equalTo: pickerViewWrpper.leadingAnchor, constant: 0).isActive = true

toolBar.trailingAnchor.constraint(equalTo: pickerViewWrpper.trailingAnchor, constant: 0).isActive = true

toolBar.topAnchor.constraint(equalTo: pickerViewWrpper.topAnchor, constant: 0).isActive = true

toolBar.heightAnchor.constraint(equalToConstant: 30).isActive = true

//add some style to UIToolbar

toolBar.barStyle = UIBarStyle.default

toolBar.isTranslucent = true

// toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)

toolBar.sizeToFit()

//int done and cancelButton buttons

let doneButton = UIBarButtonItem(title: "Select", style: UIBarButtonItem.Style.plain, target: self, action: #selector(donePicker))

let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: nil, action: nil)

let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItem.Style.plain, target: self, action: #selector(cancelPicker))

toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)

toolBar.isUserInteractionEnabled = true

//set inputView when we enter in text field this view will show insted of keyboard

textField.inputView = pickerViewWrpper

}

@objc func donePicker(){

textField.resignFirstResponder()

textField.text = tmpSelectedDate

}

@objc func cancelPicker(){

textField.resignFirstResponder()

}

@objc func dateChanged(_ sender: UIDatePicker) {

let dateFormatter = DateFormatter()

dateFormatter.dateFormat = "dd/MM/yyyy"

tmpSelectedDate = dateFormatter.string(from: sender.date)

//Uncomment if user wants to update text field date same time when user change date

// childDOB.text = dateFormatter.string(from: sender.date)

}

//*****************************************************

//End pickerView

}

shubham sharma June 11, 2019 Read More

MAC Os / iOS check network is connected or not

import CommonCrypto
import SystemConfiguration

...

public class NetworkReachability {
    
    public static func isConnectedToNetwork() -> Bool {
        var zeroAddress = sockaddr_in()
        zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
        zeroAddress.sin_family = sa_family_t(AF_INET)
        
        guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
                SCNetworkReachabilityCreateWithAddress(nil, $0)
            }
        }) else {
            return false
        }
        
        var flags: SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return false
        }
        if flags.isEmpty {
            return false
        }
        
        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)
        
        return (isReachable && !needsConnection)
    }
    
}

import CommonCrypto

import SystemConfiguration

...

public class NetworkReachability {

public static func isConnectedToNetwork() -> Bool {

var zeroAddress = sockaddr_in()

zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)

zeroAddress.sin_family = sa_family_t(AF_INET)

guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {

$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {

SCNetworkReachabilityCreateWithAddress(nil, $0)

}

}) else {

return false

}

var flags: SCNetworkReachabilityFlags = []

if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {

return false

}

if flags.isEmpty {

return false

}

let isReachable = flags.contains(.reachable)

let needsConnection = flags.contains(.connectionRequired)

return (isReachable && !needsConnection)

}

shubham sharma May 21, 2019 Read More

Swift Multi-Threading

1- The Main Queue 2- The Global Queue: 3- Custom Queues:

DispatchQueue.main.async {
   ...
}

DispatchQueue.main.async {

...

}

DispatchQueue.global(qos: .background).async {
...
}

DispatchQueue.global(qos: .background).async {

...

}

let concurrentQueue = DispatchQueue(label: "queuename", attributes: .concurrent)
concurrentQueue.sync {
...
}  <span style="font-family: inherit; font-size: inherit;"> </span>

let concurrentQueue = DispatchQueue(label: "queuename", attributes: .concurrent)

concurrentQueue.sync {

...

} <span style="font-family: inherit; font-size: inherit;"> </span>

highest priority 1- userInteractive : Work is virtually instantaneous. Similar to main thread. 2- userInitiated : Work is nearly instantaneous, such as a few seconds or less. 3- default: don’t use it usually , the type will be inferred by the system 4- utility: Work takes a few seconds to a few […]

shubham sharma April 6, 2019 Read More

Difference between Structure vs class in swift

Here’s an example with a class. Note how when the name is changed, the instance referenced by both variables is updated. Bob is now Sue, everywhere that Bob was ever referenced.

class SomeClass {
    var name: String
    init(name: String) {
        self.name = name
    }
}

var aClass = SomeClass(name: "Bob")
var bClass = aClass // aClass and bClass now reference the same instance!
bClass.name = "Sue"

println(aClass.name) // "Sue"
println(bClass.name) // "Sue"

class SomeClass {

var name: String

init(name: String) {

self.name = name

}

var aClass = SomeClass(name: "Bob")

var bClass = aClass // aClass and bClass now reference the same instance!

bClass.name = "Sue"

println(aClass.name) // "Sue"

println(bClass.name) // "Sue"

And now with a struct we see that the values are copied and each variable keeps it’s own set of values. When we set the name to Sue, the Bob struct in aStruct does not […]

shubham sharma March 26, 2019 Read More

Swift: Dictionary And Json operations

If you need to convert JSON string into a dictionary or a dictionary into JSON String

import Foundation

class JsonOperation {
    public static func toJsonStringFrom(dictionary: [String:Any]) -> NSString? {
        let jsonData = try! JSONSerialization.data(withJSONObject: dictionary)
        let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)
        return jsonString
    }
    public static func toJsonStringFrom(array: [String]) -> NSString? {
        let jsonData = try! JSONSerialization.data(withJSONObject: array)
        let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)
        return jsonString
    }
    static func toDictionaryFrom(string: String) -> [String: Any]? {
        if let data = string.data(using: .utf8) {
            do {
                return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
            } catch {
                print(error.localizedDescription)
            }
        }
        return nil
    }
}

import Foundation

class JsonOperation {

public static func toJsonStringFrom(dictionary: [String:Any]) -> NSString? {

let jsonData = try! JSONSerialization.data(withJSONObject: dictionary)

let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

return jsonString

}

public static func toJsonStringFrom(array: [String]) -> NSString? {

let jsonData = try! JSONSerialization.data(withJSONObject: array)

let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue)

return jsonString

}

static func toDictionaryFrom(string: String) -> [String: Any]? {

if let data = string.data(using: .utf8) {

do {

return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]

} catch {

print(error.localizedDescription)

}

return nil

}

shubham sharma March 18, 2019 Read More

iOS Open Document picker in

import UIKit

class DocumentPickerViewController: UIViewController {

    @IBOutlet weak var fileDetails: UITextView!
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
    
    @IBAction func openDocument(_ sender: Any) {
        selectDocument()
    }
    
}
extension DocumentPickerViewController:  UIDocumentPickerDelegate{
    fileprivate func selectDocument(){
        
        //    kUTTypePDF, kUTTypeText, kUTTypeRTF, kUTTypeSpreadsheet
        
        
        //    String(kUTTypePDF),String(kUTTypeRTFD),String(kUTTypeText),String(kUTTypeSpreadsheet)
        
        
        //    let test = UIDocumentPickerViewController
        
        let importMenu = UIDocumentPickerViewController(documentTypes: ["public.item"], in: .import)
        importMenu.delegate = self
        importMenu.modalPresentationStyle = .formSheet
        self.present(importMenu, animated: true, completion: nil)
    }
    public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
        let fileUrl = url as URL
        print("import result : \(fileUrl)")
        
        let theFileName = (fileUrl.absoluteString as NSString).lastPathComponent
        
        print(theFileName)
        fileDetails.text = fileUrl.absoluteString
        fileDetails.insertText("\n\n")
        
        fileDetails.insertText(theFileName)
        
        // Create a FileManager instance
        
        
    }
    
    
    public func documentMenu(_ documentMenu:UIDocumentPickerViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {
        documentPicker.delegate = self
        present(documentPicker, animated: true, completion: nil)
    }
    
    
    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
        print("view was cancelled")
        dismiss(animated: true, completion: nil)
    }
    
}

import UIKit

class DocumentPickerViewController: UIViewController {

@IBOutlet weak var fileDetails: UITextView!

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view.

}

@IBAction func openDocument(_ sender: Any) {

selectDocument()

}

extension DocumentPickerViewController: UIDocumentPickerDelegate{

fileprivate func selectDocument(){

// kUTTypePDF, kUTTypeText, kUTTypeRTF, kUTTypeSpreadsheet

// String(kUTTypePDF),String(kUTTypeRTFD),String(kUTTypeText),String(kUTTypeSpreadsheet)

// let test = UIDocumentPickerViewController

let importMenu = UIDocumentPickerViewController(documentTypes: ["public.item"], in: .import)

importMenu.delegate = self

importMenu.modalPresentationStyle = .formSheet

self.present(importMenu, animated: true, completion: nil)

}

public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {

let fileUrl = url as URL

print("import result : \(fileUrl)")

let theFileName = (fileUrl.absoluteString as NSString).lastPathComponent

print(theFileName)

fileDetails.text = fileUrl.absoluteString

fileDetails.insertText("\n\n")

fileDetails.insertText(theFileName)

// Create a FileManager instance

}

public func documentMenu(_ documentMenu:UIDocumentPickerViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {

documentPicker.delegate = self

present(documentPicker, animated: true, completion: nil)

}

func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {

print("view was cancelled")

dismiss(animated: true, completion: nil)

}

Download Project

shubham sharma February 13, 2019 Read More

iOS Open camera and image picker in

import UIKit

class ImagePickerViewController: UIViewController {
    @IBOutlet weak var imageView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func changeImage(_ sender: Any) {
        let alertController = UIAlertController(title: "Choose Profile Picture" , message: "", preferredStyle: .actionSheet)
        
        let cameraButton = UIAlertAction(title: "Camera" , style: .default, handler: { (action) -> Void in
            self.openCamera()
        })
        
        let  galleryButton = UIAlertAction(title: "Gallery" , style: .default, handler: { (action) -> Void in
            self.openPhotoLibrary()
        })
        
        let cancelButton = UIAlertAction(title: "Cancel" , style: .cancel, handler: { (action) -> Void in
        })
        
        alertController.addAction(cameraButton)
        alertController.addAction(galleryButton)
        alertController.addAction(cancelButton)
        
        self.present(alertController, animated: true, completion: nil)
    }
    
}

extension ImagePickerViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    
    fileprivate func openCamera() {
        let myPickerController = UIImagePickerController()
        myPickerController.delegate = self;
        myPickerController.sourceType = UIImagePickerController.SourceType.camera
        self.present(myPickerController, animated: true, completion: nil)
    }
    
    fileprivate func openPhotoLibrary() {
        let myPickerController = UIImagePickerController()
        myPickerController.delegate = self;
        myPickerController.sourceType = UIImagePickerController.SourceType.photoLibrary
        self.present(myPickerController, animated: true, completion: nil)
    }
    
    
    // MARK: UIImagePickerControllerDelegate
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        // Dismiss the picker if the user canceled.
        dismiss(animated: true, completion: nil)
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        // The info dictionary contains multiple representations of the image, and this uses the original. 
        let selectedImage : UIImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
        
        
        // Set image on ImageView
        imageView.image = selectedImage
        
        // Dismiss the picker.
        dismiss(animated: true, completion: nil)
    }
}


//Add these keys into Info.plist
//make sure use valid description otherwise apple will reject your app

//<key>NSCameraUsageDescription</key>
//<string>Use camera to update your profile Pic</string>
//<key>NSPhotoLibraryUsageDescription</key>
//<string>lUse ibrary to update your profile Pic</string>

import UIKit

class ImagePickerViewController: UIViewController {

@IBOutlet weak var imageView: UIImageView!

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view.

}

@IBAction func changeImage(_ sender: Any) {

let alertController = UIAlertController(title: "Choose Profile Picture" , message: "", preferredStyle: .actionSheet)

let cameraButton = UIAlertAction(title: "Camera" , style: .default, handler: { (action) -> Void in

self.openCamera()

})

let galleryButton = UIAlertAction(title: "Gallery" , style: .default, handler: { (action) -> Void in

self.openPhotoLibrary()

})

let cancelButton = UIAlertAction(title: "Cancel" , style: .cancel, handler: { (action) -> Void in

})

alertController.addAction(cameraButton)

alertController.addAction(galleryButton)

alertController.addAction(cancelButton)

self.present(alertController, animated: true, completion: nil)

}

extension ImagePickerViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

fileprivate func openCamera() {

let myPickerController = UIImagePickerController()

myPickerController.delegate = self;

myPickerController.sourceType = UIImagePickerController.SourceType.camera

self.present(myPickerController, animated: true, completion: nil)

}

fileprivate func openPhotoLibrary() {

let myPickerController = UIImagePickerController()

myPickerController.delegate = self;

myPickerController.sourceType = UIImagePickerController.SourceType.photoLibrary

self.present(myPickerController, animated: true, completion: nil)

}

// MARK: UIImagePickerControllerDelegate

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {

// Dismiss the picker if the user canceled.

dismiss(animated: true, completion: nil)

}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

// The info dictionary contains multiple representations of the image, and this uses the original.

let selectedImage : UIImage = info[UIImagePickerController.InfoKey.originalImage] as! UIImage

// Set image on ImageView

imageView.image = selectedImage

// Dismiss the picker.

dismiss(animated: true, completion: nil)

}

//Add these keys into Info.plist

//make sure use valid description otherwise apple will reject your app

//<key>NSCameraUsageDescription</key>

//<string>Use camera to update your profile Pic</string>

//<key>NSPhotoLibraryUsageDescription</key>

//<string>lUse ibrary to update your profile Pic</string>

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shubham sharma February 13, 2019 Read More

iOS Add loader

add loader in ios

//create an extension for UIViewController which
//contains getActivityIndicator method
extension UIViewController {
func getActivityIndicator(_ title: String) -> UIView {
var activityIndicator = UIActivityIndicatorView()
var strLabel = UILabel()
let effectView = UIVisualEffectView(effect: UIBlurEffect(style: .dark))
let mainUi = UIView()

strLabel.removeFromSuperview()
activityIndicator.removeFromSuperview()
effectView.removeFromSuperview()

strLabel = UILabel(frame: CGRect(x: 50, y: 0, width: 160, height: 46))
strLabel.text = title
strLabel.font = .systemFont(ofSize: 14, weight: .medium)
strLabel.textColor = UIColor(white: 0.9, alpha: 0.7)

effectView.frame = CGRect(x: view.frame.midX - 80, y: view.frame.midY - strLabel.frame.height/2 , width: 160, height: 46)
effectView.layer.cornerRadius = 3
effectView.layer.masksToBounds = true

activityIndicator = UIActivityIndicatorView(style: .white)
activityIndicator.frame = CGRect(x: 0, y: 0, width: 46, height: 46)
activityIndicator.startAnimating()

effectView.contentView.addSubview(activityIndicator)
effectView.contentView.addSubview(strLabel)

mainUi.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
mainUi.backgroundColor = UIColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.4)

mainUi.addSubview(effectView)
return mainUi
}
}

// then in your viewcontroler create a field
fileprivate var viewloader:UIView?

//initlize view
viewloader = getActivityIndicator("Loading...")
// add view when you need
view.addSubview(viewloader!)

//remove view when you don't need
self.viewloader?.removeFromSuperview()

//create an extension for UIViewController which

//contains getActivityIndicator method

extension UIViewController {

func getActivityIndicator(_ title: String) -> UIView {

var activityIndicator = UIActivityIndicatorView()

var strLabel = UILabel()

let effectView = UIVisualEffectView(effect: UIBlurEffect(style: .dark))

let mainUi = UIView()

strLabel.removeFromSuperview()

activityIndicator.removeFromSuperview()

effectView.removeFromSuperview()

strLabel = UILabel(frame: CGRect(x: 50, y: 0, width: 160, height: 46))

strLabel.text = title

strLabel.font = .systemFont(ofSize: 14, weight: .medium)

strLabel.textColor = UIColor(white: 0.9, alpha: 0.7)

effectView.frame = CGRect(x: view.frame.midX - 80, y: view.frame.midY - strLabel.frame.height/2 , width: 160, height: 46)

effectView.layer.cornerRadius = 3

effectView.layer.masksToBounds = true

activityIndicator = UIActivityIndicatorView(style: .white)

activityIndicator.frame = CGRect(x: 0, y: 0, width: 46, height: 46)

activityIndicator.startAnimating()

effectView.contentView.addSubview(activityIndicator)

effectView.contentView.addSubview(strLabel)

mainUi.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)

mainUi.backgroundColor = UIColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.4)

mainUi.addSubview(effectView)

return mainUi

}

// then in your viewcontroler create a field

fileprivate var viewloader:UIView?

//initlize view

viewloader = getActivityIndicator("Loading...")

// add view when you need

view.addSubview(viewloader!)

//remove view when you don't need

self.viewloader?.removeFromSuperview()

shubham sharma February 13, 2019 Read More

New Dev Point

Some problems explained

iOS

iOS Info.plist Usage Description

Swift Date format refrence

iOS Date picker view

MAC Os / iOS check network is connected or not

Swift Multi-Threading

Difference between Structure vs class in swift

Swift: Dictionary And Json operations

iOS Open Document picker in

iOS Open camera and image picker in

iOS Add loader