Swift

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

iOS Swift SSView

Change gradient background Rounded corners Shadow

import UIKit

@IBDesignable
class SSView: UIView {
    
    @IBInspectable var GradientFirstColor :UIColor = UIColor.clear {
        didSet{
            updateView()
        }
    }
    @IBInspectable var GradientSecondColor :UIColor = UIColor.clear {
        didSet{
            updateView()
        }
    }
    
    @IBInspectable var useShadow:Bool = false {
        didSet{
            if(useShadow){
                dropShadow(scale: false)
            }
        }
    }
    @IBInspectable var shadowColor :UIColor = UIColor.blue {
        didSet{
            if(useShadow){
                dropShadow(scale: false)
            }
        }
    }
    @IBInspectable var shadowRadius:CGFloat = 0 {
        didSet{
            if(useShadow){
                dropShadow(scale: false)
            }
        }
    }
    @IBInspectable var radius:Bool = false {
        didSet{
            updateRadius()
        }
    }
    @IBInspectable var  ShadowX:Int = 1 {
        didSet{
            updateRadius()
        }
    }
    @IBInspectable var  ShadowY:Int = 1 {
        didSet{
            updateRadius()
        }
    }
    
    
    @IBInspectable var radiusAmt:CGFloat = 0 {
        didSet{
            updateRadius()
        }
    }
    
    
    override class var layerClass: Swift.AnyClass{
        get {
            return CAGradientLayer.self
        }
    }
    func updateView(){
        let layer = self.layer as! CAGradientLayer
        layer.colors = [GradientFirstColor.cgColor, GradientSecondColor.cgColor]
        
    }
    
    // OUTPUT 1
    func dropShadow(scale: Bool = true) {
        self.layer.masksToBounds = false
        self.layer.shadowColor = shadowColor.cgColor
        self.layer.shadowOpacity = 0.3
        self.layer.shadowOffset = CGSize(width: ShadowX, height: ShadowY)
        self.layer.shadowRadius = shadowRadius
        
        //        self.layer.shadowPath = UIBezierPath(rect: self.bounds).cgPath
        //        self.layer.shouldRasterize = true
        //        self.layer.rasterizationScale = scale ? UIScreen.main.scale : 1
        
    }
    
    func updateRadius(){
        if(radius){
            self.layer.cornerRadius = radiusAmt;
            self.layer.shadowPath = UIBezierPath(roundedRect: self.bounds, cornerRadius: self.layer.cornerRadius).cgPath
            //            self.layer.masksToBounds = true;
        }
    }
    
}

import UIKit

@IBDesignable

class SSView: UIView {

@IBInspectable var GradientFirstColor :UIColor = UIColor.clear {

didSet{

updateView()

}

@IBInspectable var GradientSecondColor :UIColor = UIColor.clear {

didSet{

updateView()

}

@IBInspectable var useShadow:Bool = false {

didSet{

if(useShadow){

dropShadow(scale: false)

}

@IBInspectable var shadowColor :UIColor = UIColor.blue {

didSet{

if(useShadow){

dropShadow(scale: false)

}

@IBInspectable var shadowRadius:CGFloat = 0 {

didSet{

if(useShadow){

dropShadow(scale: false)

}

@IBInspectable var radius:Bool = false {

didSet{

updateRadius()

}

@IBInspectable var ShadowX:Int = 1 {

didSet{

updateRadius()

}

@IBInspectable var ShadowY:Int = 1 {

didSet{

updateRadius()

}

@IBInspectable var radiusAmt:CGFloat = 0 {

didSet{

updateRadius()

}

override class var layerClass: Swift.AnyClass{

get {

return CAGradientLayer.self

}

func updateView(){

let layer = self.layer as! CAGradientLayer

layer.colors = [GradientFirstColor.cgColor, GradientSecondColor.cgColor]

}

// OUTPUT 1

func dropShadow(scale: Bool = true) {

self.layer.masksToBounds = false

self.layer.shadowColor = shadowColor.cgColor

self.layer.shadowOpacity = 0.3

self.layer.shadowOffset = CGSize(width: ShadowX, height: ShadowY)

self.layer.shadowRadius = shadowRadius

// self.layer.shadowPath = UIBezierPath(rect: self.bounds).cgPath

// self.layer.shouldRasterize = true

// self.layer.rasterizationScale = scale ? UIScreen.main.scale : 1

}

func updateRadius(){

if(radius){

self.layer.cornerRadius = radiusAmt;

self.layer.shadowPath = UIBezierPath(roundedRect: self.bounds, cornerRadius: self.layer.cornerRadius).cgPath

// self.layer.masksToBounds = true;

}

shubham sharma November 20, 2018 Read More

iOS picker view

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var editTxt: UITextField!
    
    var colorList:[String] = ["Red", "Green", "Blue"]
    var tmpSelect = ""
    
    override func viewDidLoad() {
        super.viewDidLoad()
        pickerViewInit()
        // Do any additional setup after loading the view, typically from a nib.
    }
}

extension ViewController: UIPickerViewDelegate, UIPickerViewDataSource {
    //picker
    
    func pickerViewInit( ){
        //Create a parent view for UIPickerView
        let pickerViewWrpper = UIView(frame: CGRect(x:0, y: 200,width: view.frame.width,height: 200))
        pickerViewWrpper.backgroundColor = .clear
        
        //create UIPickerView object
        let picker = UIPickerView( )
        
        picker.backgroundColor = .clear
        //add UIPickerView into parent view
        pickerViewWrpper.addSubview(picker)
        
        //add some constraint to UIPickerView
        picker.translatesAutoresizingMaskIntoConstraints = false
        picker.leadingAnchor.constraint(equalTo: pickerViewWrpper.leadingAnchor, constant: 0).isActive = true
        picker.trailingAnchor.constraint(equalTo: pickerViewWrpper.trailingAnchor, constant: 0).isActive = true
        picker.bottomAnchor.constraint(equalTo: pickerViewWrpper.bottomAnchor, constant: 0).isActive = true
        picker.heightAnchor.constraint(equalToConstant: 170).isActive = true
        
        //set data source and other stuff
        picker.showsSelectionIndicator = true
        picker.delegate = self
        picker.dataSource = self
        
        //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: UIBarButtonItemStyle.plain, target: self, action: #selector(donePicker))
        let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)
        let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.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
        
        editTxt.inputView = pickerViewWrpper
        
    }
    
    @objc func donePicker(){
        editTxt.resignFirstResponder()
        editTxt.text = tmpSelect
    }
    @objc func cancelPicker(){
        editTxt.resignFirstResponder()
    }
    
    //-picker
    //pickerView
    //*****************************************************
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return colorList.count
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return colorList[row]
        
    }
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        tmpSelect = colorList [row]
    }
    //*****************************************************
    //End pickerView
}

100

101

102

103

104

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var editTxt: UITextField!

var colorList:[String] = ["Red", "Green", "Blue"]

var tmpSelect = ""

override func viewDidLoad() {

super.viewDidLoad()

pickerViewInit()

// Do any additional setup after loading the view, typically from a nib.

}

extension ViewController: UIPickerViewDelegate, UIPickerViewDataSource {

//picker

func pickerViewInit( ){

//Create a parent view for UIPickerView

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

pickerViewWrpper.backgroundColor = .clear

//create UIPickerView object

let picker = UIPickerView( )

picker.backgroundColor = .clear

//add UIPickerView into parent view

pickerViewWrpper.addSubview(picker)

//add some constraint to UIPickerView

picker.translatesAutoresizingMaskIntoConstraints = false

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

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

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

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

//set data source and other stuff

picker.showsSelectionIndicator = true

picker.delegate = self

picker.dataSource = self

//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: UIBarButtonItemStyle.plain, target: self, action: #selector(donePicker))

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

let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.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

editTxt.inputView = pickerViewWrpper

}

@objc func donePicker(){

editTxt.resignFirstResponder()

editTxt.text = tmpSelect

}

@objc func cancelPicker(){

editTxt.resignFirstResponder()

}

//-picker

//pickerView

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

func numberOfComponents(in pickerView: UIPickerView) -> Int {

return 1

}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

return colorList.count

}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

return colorList[row]

}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

tmpSelect = colorList [row]

}

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

//End pickerView

}

shubham sharma October 26, 2018 Read More

iOS Regular Codes

Hide keyboard on the outside click iOS

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

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

self.view.endEditing(true) //This will hide the keyboard

}

How to hide Navigation Bar without losing slide-back ability Extend: UIGestureRecognizerDelegate

self.navigationController?.isNavigationBarHidden = true
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true
self.navigationController?.interactivePopGestureRecognizer?.delegate = self

self.navigationController?.isNavigationBarHidden = true

self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true

self.navigationController?.interactivePopGestureRecognizer?.delegate = self

Estimate the size of the cell according to text

 func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        
        let cgsiz = CGSize(width: self.view.frame.width , height:1000)
        let att = [NSFontAttributeName: UIFont.systemFont(ofSize: 14)]
        let estFram = NSString(string: self.tableData[indexPath.row].value).boundingRect(with: cgsiz, options: .usesLineFragmentOrigin, attributes: att, context: nil)
        let height = estFram.height + 40
        return height
 }

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {

let cgsiz = CGSize(width: self.view.frame.width , height:1000)

let att = [NSFontAttributeName: UIFont.systemFont(ofSize: 14)]

let estFram = NSString(string: self.tableData[indexPath.row].value).boundingRect(with: cgsiz, options: .usesLineFragmentOrigin, attributes: att, context: nil)

let height = estFram.height + 40

return height

}

Change UIPageControl button on scroll Layout: Flow Scroll Direction: Horizontal Scrolling enabled Paging enabled

@IBOutlet weak var pageController: UIPageControl!
...
self.pageController.numberOfPages = self.imagesArray.count

...
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
        pageController?.currentPage = Int(scrollView.contentOffset.x) / Int(scrollView.frame.width)
    }
    
    func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {
        pageController?.currentPage = Int(scrollView.contentOffset.x) / Int(scrollView.frame.width)
    }

@IBOutlet weak var pageController: UIPageControl!

...

self.pageController.numberOfPages = self.imagesArray.count

...

func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {

pageController?.currentPage = Int(scrollView.contentOffset.x) / Int(scrollView.frame.width)

}

func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {

pageController?.currentPage = Int(scrollView.contentOffset.x) / Int(scrollView.frame.width)

}

ios date

let tranDate:Date = Date()
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let tranDateResult = formatter.string(from: tranDate)

let tranDate:Date = Date()

let formatter = DateFormatter()

formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

let tranDateResult = formatter.string(from: tranDate)

Convert date to today or time

public static func dayDifference(from interval : TimeInterval) -> String {
        let calendar = NSCalendar.current
        let date = Date(timeIntervalSince1970: interval)
        if calendar.isDateInYesterday(date) { return "Yesterday" }
        else if calendar.isDateInToday(date) {
            
            let unixTimestamp = TimeInterval.self
            
            print(unixTimestamp)
            
            let date = Date(timeIntervalSince1970: interval)
            let dateFormatter = DateFormatter()
            //                dateFormatter.timeZone = TimeZone(abbreviation: "GMT") //Set timezone that you want
            dateFormatter.locale = NSLocale.current
            dateFormatter.dateFormat = "hh:mm a" //Specify your format that you want
            let strDate = dateFormatter.string(from: date)
            print(strDate)
            
            return strDate
            
        } else {
            let unixTimestamp = interval
            
            
            let date = Date(timeIntervalSince1970: unixTimestamp)
            let dateFormatter = DateFormatter()
            //                dateFormatter.timeZone = TimeZone(abbreviation: "GMT") //Set timezone that you want
            dateFormatter.locale = NSLocale.current
            dateFormatter.dateFormat = "dd/MM" //Specify your format that you want
            let strDate = dateFormatter.string(from: date)
            
            return strDate
            
        }
    }

public static func dayDifference(from interval : TimeInterval) -> String {

let calendar = NSCalendar.current

let date = Date(timeIntervalSince1970: interval)

if calendar.isDateInYesterday(date) { return "Yesterday" }

else if calendar.isDateInToday(date) {

let unixTimestamp = TimeInterval.self

print(unixTimestamp)

let date = Date(timeIntervalSince1970: interval)

let dateFormatter = DateFormatter()

// dateFormatter.timeZone = TimeZone(abbreviation: "GMT") //Set timezone that you want

dateFormatter.locale = NSLocale.current

dateFormatter.dateFormat = "hh:mm a" //Specify your format that you want

let strDate = dateFormatter.string(from: date)

print(strDate)

return strDate

} else {

let unixTimestamp = interval

let date = Date(timeIntervalSince1970: unixTimestamp)

let dateFormatter = DateFormatter()

// dateFormatter.timeZone = TimeZone(abbreviation: "GMT") //Set timezone that you want

dateFormatter.locale = NSLocale.current

dateFormatter.dateFormat = "dd/MM" //Specify your format that you want

let strDate = dateFormatter.string(from: date)

return strDate

}

[…]

shubham sharma October 15, 2018 Read More

New Dev Point

Some problems explained

Swift

iOS Add loader

iOS Swift SSView

iOS picker view

iOS Regular Codes