Swift-Extension Files for easy to use in Swift 4.1 version. Need to download file and drag and drop in your Xcode Project.
Drag and drop Extension folder inside your project and use it.
Or directly you can copy and paste inside your class. 🚀
- Array
extension Array {
func atIndex(_ index: Int) -> Element? {
if index < 0 || index > self.count - 1 {
return nil
}
return self[index]
}
}- UILabel
extension UILabel{
func setLeft(){
self.textAlignment = .left
}
func setRight(){
self.textAlignment = .right
}
func attribute(_ with: String, effect: String){
let mainString = [NSAttributedStringKey.foregroundColor: UIColor.black, NSAttributedStringKey.font: UIFont(name: self.font.fontName, size: self.font.pointSize)!]
let effectString = [NSAttributedStringKey.foregroundColor: UIColor.black, NSAttributedStringKey.font: UIFont.systemFont(ofSize: self.font.pointSize)]
let partOne = NSMutableAttributedString(string: with, attributes: mainString)
let partTwo = NSMutableAttributedString(string: effect, attributes: effectString)
let combination = NSMutableAttributedString()
combination.append(partOne)
combination.append(partTwo)
self.attributedText = combination
}
func underline() {
if let textString = self.text {
let attributedString = NSMutableAttributedString(string: textString)
attributedString.addAttribute(NSAttributedStringKey.underlineStyle, value: NSUnderlineStyle.styleSingle.rawValue, range: NSRange(location: 0, length: attributedString.length))
attributedText = attributedString
}
}
}- UIViewController
extension UIViewController{
//MARK:- Aleart View
func showAleartViewwithTitle(_ title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
func showAlertWithMessage(_ message: String, with completion: (() -> Void)?){
let alertController = UIAlertController(title: "Message", message: message, preferredStyle: .alert)
self.present(alertController, animated: true, completion: nil)
let delay = 3.0 * Double(NSEC_PER_SEC)
let time = DispatchTime.now() + Double(Int64(delay)) / Double(NSEC_PER_SEC)
DispatchQueue.main.asyncAfter(deadline: time, execute: {
alertController.dismiss(animated: true, completion: nil)
completion?()
})
}
}- UIScrollView
extension UIScrollView {
// Scroll to a specific view so that it's top is at the top our scrollview
func scrollToView(view:UIView, animated: Bool) {
if let origin = view.superview {
UIView.animate(withDuration: 0.4, animations: {
// Get the Y position of your child view
let childStartPoint = origin.convert(view.frame.origin, to: self)
// Scroll to a rectangle starting at the Y of your subview, with a height of the scrollview
self.scrollRectToVisible(CGRect(x:0, y:childStartPoint.y, width:1, height:self.frame.height), animated: animated)
})
}
}
// Bonus: Scroll to top
func scrollToTop(animated: Bool) {
let topOffset = CGPoint(x: 0, y: -contentInset.top)
setContentOffset(topOffset, animated: animated)
}
// Bonus: Scroll to bottom
func scrollToBottom() {
let bottomOffset = CGPoint(x: 0, y: contentSize.height - bounds.size.height + contentInset.bottom)
if(bottomOffset.y > 0) {
setContentOffset(bottomOffset, animated: true)
}
}
}- UINavigationBar
public extension UINavigationBar {
/// SwifterSwift: Set Navigation Bar title, title color and font.
///
/// - Parameters:
/// - font: title font
/// - color: title text color (default is .black).
public func setTitleFont(_ font: UIFont, color: UIColor = .black) {
var attrs = [NSAttributedStringKey: Any]()
attrs[.font] = font
attrs[.foregroundColor] = color
titleTextAttributes = attrs
}
/// SwifterSwift: Make navigation bar transparent.
///
/// - Parameter tint: tint color (default is .white).
public func makeTransparent(withTint tint: UIColor = .white) {
isTranslucent = true
backgroundColor = .clear
barTintColor = .clear
setBackgroundImage(UIImage(), for: .default)
tintColor = tint
titleTextAttributes = [.foregroundColor: tint]
shadowImage = UIImage()
}
/// SwifterSwift: Set navigationBar background and text colors
///
/// - Parameters:
/// - background: backgound color
/// - text: text color
public func setColors(background: UIColor, text: UIColor) {
isTranslucent = false
backgroundColor = background
barTintColor = background
setBackgroundImage(UIImage(), for: .default)
tintColor = text
titleTextAttributes = [.foregroundColor: text]
}
}- String
extension String {
public var isNotEmpty: Bool {
return !isEmpty
}
var trim: String {
if self.isNotEmpty {
return self.trimmingCharacters(in: CharacterSet.whitespaces)
}else{
return ""
}
}
var trimLine: String {
if self.isNotEmpty {
return self.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
}else{
return ""
}
}
var isAlphanumeric: Bool {
return !isEmpty && range(of: "[^a-zA-Z0-9]", options: .regularExpression) == nil
}
var isEmail: Bool {
guard !self.isEmpty else{
return false
}
let emailRegex: String = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
let emailTest = NSPredicate(format: "SELF MATCHES %@", emailRegex)
return emailTest.evaluate(with: self)
}
var isMobile: Bool {
guard !self.isEmpty else{
return false
}
let phoneRegix = "[123456789][0-9]{8}([0-9]{1})?"
let phoneTest = NSPredicate(format: "SELF MATCHES %@", phoneRegix)
return phoneTest.evaluate(with: self)
}
func changeDate(_ mydate:String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = DateFormatter.Style.long
dateFormatter.dateFormat = "yyyy/M/dd"
let convertedDate = dateFormatter.date(from: mydate)
dateFormatter.dateFormat = "MMMM dd, yyyy"
let date = dateFormatter.string(from: convertedDate!)
return date
}
//MARK : - For First Capital letter of String
private func capitalizingFirstLetter() -> String {
let first = String(self.prefix(1)).capitalized
let other = String(self.dropFirst())
return first + other
}
mutating func capitalizeFirstLetter() {
self = self.capitalizingFirstLetter()
}
func trimWhiteSpace() -> String {
return self.trimmingCharacters(in: .whitespaces)
}
//MARK: - Removing space from String
var removeSpace: String {
if self.isNotEmpty {
return self.components(separatedBy: .whitespaces).joined()
}else{
return ""
}
}
}- UITextField
extension UITextField {
func setBorderAndCorner(){
DispatchQueue.main.async {
self.layer.borderWidth = 1.0
self.layer.borderColor = ExFunction.hexStringToUIColor(hex: "61906B").cgColor
self.layer.cornerRadius = 5
}
}
func setLeftPaddingPoints(_ amount:CGFloat){
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.leftView = paddingView
self.leftViewMode = .always
}
func setRightPaddingPoints(_ amount:CGFloat) {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.size.height))
self.rightView = paddingView
self.rightViewMode = .always
}
var isValidEmail: Bool {
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
return emailTest.evaluate(with: self.text ?? "")
}
var isPhoneNumber: Bool {
do {
let detector = try NSDataDetector(types: NSTextCheckingResult.CheckingType.phoneNumber.rawValue)
let matches = detector.matches(in: self.text ?? "", options: [], range: NSMakeRange(0, (self.text ?? "").count))
if let res = matches.first {
return res.resultType == .phoneNumber && res.range.location == 0 && res.range.length == (self.text ?? "").count && (self.text ?? "").count == 10
} else {
return false
}
} catch {
return false
}
}
}- Date
extension Date {
func toString() -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd-MM-yyyy"
return dateFormatter.string(from: self)
}
func toTimeString() -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "HH:mm"
return dateFormatter.string(from: self)
}
}- NSMutableAttributedString
extension NSMutableAttributedString {
@discardableResult
func bold(_ text: String) -> NSMutableAttributedString {
let attrs = [NSAttributedStringKey.font : UIFont(name: "AvenirNext-Medium", size: 12)!]
let boldString = NSMutableAttributedString(string: text, attributes: attrs)
self.append(boldString)
return self
}
@discardableResult
func normal(_ text:String)->NSMutableAttributedString {
let normal = NSAttributedString(string: text)
self.append(normal)
return self
}
}- UIColor (HEX)
extension UIColor {
convenience init(hex: String) {
let scanner = Scanner(string: hex)
scanner.scanLocation = 0
var rgbValue: UInt64 = 0
scanner.scanHexInt64(&rgbValue)
let r = (rgbValue & 0xff0000) >> 16
let g = (rgbValue & 0xff00) >> 8
let b = rgbValue & 0xff
self.init(
red: CGFloat(r) / 0xff,
green: CGFloat(g) / 0xff,
blue: CGFloat(b) / 0xff, alpha: 1
)
}
}- UIImage
extension UIImage {
var toBase64String:String {
let imageData = UIImagePNGRepresentation(self)
return imageData!.base64EncodedString(options: .lineLength64Characters)
}
// Return half- Size version of Current image
var halfSizeImage: UIImage? {
// let halfWidth = 250
// let halfHeight = 250
let halfWidth = self.size.width / 2
let halfHeight = self.size.height / 2
UIGraphicsBeginImageContext(CGSize(width: halfWidth, height: halfHeight))
self.draw(in: CGRect(x: 0, y: 0, width: halfWidth, height: halfHeight))
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
// Return Quarter- Size version of Current image
var quarterhalfSizeImage:UIImage? {
let halfWidth = self.size.width / 4
let halfHeight = self.size.height / 4
UIGraphicsBeginImageContext(CGSize(width: halfWidth, height: halfHeight))
self.draw(in: CGRect(x: 0, y: 0, width: halfWidth, height: halfHeight))
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
//Loading Image From Document Directory
func loadImageFromDocumentDirPath(_ path: String) -> UIImage? {
let data = try? Data(contentsOf: URL(fileURLWithPath: path))
if (data != nil){
let image = UIImage(data: data!)
return image
}else{
return nil
}
}
}- UIImageView
extension UIImageView {
func setRounded() {
let radius = self.frame.width / 2
self.layer.cornerRadius = radius
self.layer.masksToBounds = true
}
func setCornerRadious() {
let radius = self.frame.height / 20
self.layer.cornerRadius = radius
self.layer.masksToBounds = true
}
}- ExFunction (Public functions for String to Dictionary & Dictionary to String)
public struct ExFunction {
//MARK:- String to Dictionary Conversion
static func convertStringToDictionary(_ json: String) -> [String: Any] {
if let data = json.data(using: String.Encoding.utf8) {
do{
let json = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions()) as? [String: Any]
return json ?? [:]
}catch{
print(error)
}
}
return [:]
}
static func getRawJSON(from dictionary:[String: Any]) -> String{
guard let theJSONData = try? JSONSerialization.data(withJSONObject: dictionary, options: []) else {
//Handle Error here
return ""
}
let jsonString = String(data: theJSONData, encoding: .ascii) ?? ""
return jsonString
}
static func hexStringToUIColor(hex:String) -> UIColor {
var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
if (cString.hasPrefix("#")) {
cString.remove(at: cString.startIndex)
}
if ((cString.count) != 6) {
return UIColor.gray
}
var rgbValue:UInt32 = 0
Scanner(string: cString).scanHexInt32(&rgbValue)
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
}