nrlnishan

import UIKit

// Awesome Library: SwiftDate

/* Things:
 
 1. Compare dates
 2. Break dates into different components
 3. Calculate dates by adding date components
 

nrlnishan

Steps:

1. Create two view controller namely FirstViewController & SecondViewController
2. Set the background color of the default view of SecondViewController to clear color or give appropriate opacity
3. Create whatever UI You want in SecondViewController
4. Set the 
        self.modalPresentationStyle = .currentContext
   in viewDidLoad of FirstViewController.
5. Use a modal segue or present the SecondViewController Modally.

nrlnishan

    class func from(r:CGFloat,g:CGFloat,b:CGFloat,a:CGFloat) -> UIColor {
        return UIColor(red: r/255.0, green: g/255.0, blue: b/255.0, alpha: a)
    }
   
    // Hex should be in format #bcbcbc
    class func from (hex:String) -> UIColor {
        var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
        
        if (cString.hasPrefix("#")) {

nrlnishan

Steps for creating custom UIView.

1. Create a xib file, eg: MyCustomView.xib
2. Do necessary layout in xib file 
3. Create a UIView file. eg: MyCustomView.swift. 
4. Set this MyCustomView.swift file as the file owner of that xib
5. Create necessary outlets from the .xib file to .swift file. Important: Create one outlet for the root parent UIView to .swift file. 
Name this outlet as as containerView
6. Override both the init method i.e using decoder & frame
7. Set the code as follows

nrlnishan

1. Duplicate Build Configurations from Project Settings
  - Example: Duplicate debug & name it as debugDev. Duplicate release & name it as releaseDev.

2. Change Project's bundle identifier from Target Build Settings
  - Change it to reflect build configurations
  
3. Create User Defined Settings 
  - There is + sign on navigation bar in Build Settings. Click on it & create User Defined Settings as needed
  - Example: If you need different names on different builds, add setting name APP_DISPLAY_NAME & so on.
  - You need to use this created settings on info.plist file. Eg, Change Bundle Display Name value to $(APP_DISPLAY_NAME).

nrlnishan

1. Content Hugging Property:
  - This priority defines whether the content size should increase beyond its intrinsic size. 
  - Content Hugging :: Content doesnot want to grow. 
  
  Horizontal Hugging: Higher priority means that content width doesnot want to grow beyond its intrinsic width. 
  Vertical Hugging: Higher priority means that content height doesnot want to grow beyond its intrinsic height. 
  
2. Content Compression Resistance 
  - This priority defines whether the content size should decrease beyond its intrinsic size. 
  - Content Compression Resistance :: Content doesnot want to shrink 

nrlnishan

// DRAFT:- 

1. Give scrollview with top, leading, trailing & bottom constraint
2. Give the container view inside scrollview with 
 - Center x to scrollview 
 - Center y to scrollview 
 - trailing to scrollview 
 - bottom to scrollview 
 - Equal Height to scrollview 
 - Equal Width to scrollview 

nrlnishan

extension UIView {

        func shake() {

                let animation = CAKeyframeAnimation()
                animation.keyPath = "position.x"
                animation.values = [0, 10, -10, 10, -5, 5, -5, 0 ]
                animation.keyTimes = [0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875, 1]
                animation.duration = 0.4
                animation.isAdditive = true

nrlnishan

class SecondViewController: UIViewController {
    
    var someText = ""
    var controller: UIAlertController!
    
    var label = UILabel()
    
    override func loadView() {
        view = UIView()
        view.backgroundColor = .white

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struct AppSettings {
    
    // Update the respective value in UserDefault
    static var isDarkModeEnabled = false {
        didSet {
            UserDefaults.standard.setValue(isDarkModeEnabled, forKey: "is_dark_mode_enabled")
        }
    }
}