jazzedge

01. Begin by declaring that the View Controller class implements the 
UIImagePickerControllerDelegate and UINavigationControllerDelegate protocols, 
then within the ViewController.swift file  implement the code as follows:

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
.
.
@IBAction func selectPhoto(_ sender: AnyObject) {

    let imagePicker = UIImagePickerController()

jazzedge

// See: https://stackoverflow.com/questions/32281651/how-to-dismiss-keyboard-when-touching-anywhere-outside-uitextfield-in-swift

  override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    self.view.endEditing(true)
  }

// For specific fields you can try:

override func touchesBegan(_ touches: Set<UITouch>,
                   with event: UIEvent?) {

jazzedge

See: https://www.appcoda.com/cloudkit-introduction-tutorial/

01. Declare:

var imageURL: NSURL!
let documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! NSString
let tempImageName = "temp_image.jpg"

02. Create a custom method

jazzedge

Source: BorgGreen

    func drawLine(xorig: CGFloat, yorig: Int, xlen: Int, ylen: Int, color: CGColor) {

        let doYourPath = UIBezierPath(rect: CGRect(x: Int(xorig), y: yorig, width: xlen, height: ylen))
        let layer = CAShapeLayer()
        layer.path = doYourPath.cgPath
        layer.strokeColor = color
        layer.fillColor = color

jazzedge

Source: Yippidoo

01. Include the Extension Class RoundButton.swift

import UIKit

@IBDesignable
class RoundButton: UIButton {
    
    @IBInspectable var cornerRadius: CGFloat = 0 {

jazzedge

//See: https://stackoverflow.com/questions/43073623/changing-the-color-of-the-status-bar
Source: BorgGreen

01. First in Plist set View controller-based status bar appearance to NO

02. Add this code to AppDelegate.swift

    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Set Status Bar to light colour for ALL ViewControllers

jazzedge

See: http://purelywebdesign.co.uk/tutorial/swift-underlined-text-field-tutorial/
Source: BorgGreen

01. EXTENSION

import UIKit
extension UITextField {
    
    func underlined(){
        let border = CALayer()

jazzedge

Source: BorgGreen

01. Create a new class...

import UIKit
class BaseViewController: UIViewController {
    
        override func viewDidLoad() {
            super.viewDidLoad()
            

jazzedge

See: https://stackoverflow.com/questions/31232689/how-to-set-cornerradius-for-only-bottom-left-bottom-right-and-top-left-corner-te/41217791#41217791

Source: CurvedView

EXTENSION:

import UIKit

extension UIView {
    func roundCorners(_ corners:UIRectCorner, radius: CGFloat) {

jazzedge

See: https://stackoverflow.com/questions/39624675/add-shadow-on-uiview-using-swift-3

Source:ViewShadow

Here is the extension with two functions of the same name, one with, the other without parameters.

import UIKit

extension UIView {