import UIKit

class DropDownViewController: UIViewController {
    @IBOutlet var textField: UITextField!
    @IBOutlet var bV: UIButton!
    @IBOutlet var tabelView1: UITableView!
    @IBOutlet var textFieldEdit: UITextField!
    
    //keyboard (bottom uitextfield)
    @IBOutlet var keyboardHeightLayoutConstraint: NSLayoutConstraint?
    
    let array = ["data1", "data2", "data3", "data4", "data5"]
    
    
    @IBAction func bActionV(_ sender: Any) {
        self.tabelView1.isHidden = !self.tabelView1.isHidden
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.tabelView1.isHidden = true
        self.tabelView1.register(UINib(nibName: "ApiTableViewCell", bundle: nil), forCellReuseIdentifier: "cell")
        
        //keyboard
        NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardNotification(notification:)), name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
    }
    
    //keyboard
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    
    //keyboard
    @objc func keyboardNotification(notification: NSNotification) {
        if let userInfo = notification.userInfo {
            let endFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
            let endFrameY = endFrame?.origin.y ?? 0
            let duration:TimeInterval = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue ?? 0
            let animationCurveRawNSN = userInfo[UIKeyboardAnimationCurveUserInfoKey] as? NSNumber
            let animationCurveRaw = animationCurveRawNSN?.uintValue ?? UIViewAnimationOptions.curveEaseInOut.rawValue
            let animationCurve:UIViewAnimationOptions = UIViewAnimationOptions(rawValue: animationCurveRaw)
            if endFrameY >= UIScreen.main.bounds.size.height {
                self.keyboardHeightLayoutConstraint?.constant = 0.0
            } else {
                self.keyboardHeightLayoutConstraint?.constant = (endFrame?.size.height)! + 50
            }
            UIView.animate(withDuration: duration, delay: TimeInterval(0), options: animationCurve, animations: { self.view.layoutIfNeeded() }, completion: nil)
            
            
        }
    }
    
    //---------------------
}

extension DropDownViewController: UITableViewDataSource, UITableViewDelegate {
    func numberOfSections(in tableView: UITableView) -> Int {
        return 10
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.array.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ApiTableViewCell
        cell.merkLabel.text = array[indexPath.row]
        
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let cell = tableView.cellForRow(at: indexPath) as? ApiTableViewCell
        
        self.textField.text = cell?.merkLabel.text
        
        bV.setTitle(cell?.textLabel?.text, for: .normal)
        self.tabelView1.isHidden = true
    }
}

import UIKit
import paper_onboarding

class Onboarding: PaperOnboarding {

}
                      

2. create class file Onboarding.swift and connect with UIView

3. after that use this code below

import paper_onboarding
import UIKit

class OnBoardingViewController: UIViewController {
    @IBOutlet var onBoardingObj: Onboarding!
    @IBOutlet weak var skipB: UIButton!
    @IBOutlet weak var bDaftar: UIButton!
    @IBOutlet weak var pageControl: UIPageControl!
    
    fileprivate let items = [
        OnboardingItemInfo(title: "Selamat Datang",
                           informationImage: #imageLiteral(resourceName: "intro1"),
                           description: "Lorem ipsum dolor sit amet, consectetur adipiscing elit estibulum nisl nibh, placerat vitae est sed.",
                           pageIcon: #imageLiteral(resourceName: "active"),
                           color: #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0),
                           titleColor: UIColor.gray,
                           descriptionColor: UIColor.gray,
                           titleFont: titleFont,
                           descriptionFont: descriptionFont),
        
        OnboardingItemInfo(title: "Partner Asuransi",
                           informationImage: #imageLiteral(resourceName: "intro2"),
                           description: "Lorem ipsum dolor sit amet, consectetur adipiscing elit estibulum nisl nibh, placerat vitae est sed.",
                           pageIcon: #imageLiteral(resourceName: "active"),
                           color: #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0),
                           titleColor: UIColor.gray,
                           descriptionColor: UIColor.gray,
                           titleFont: titleFont,
                           descriptionFont: descriptionFont),
        
        OnboardingItemInfo(title: "Daftar Sekarang!",
                           informationImage: #imageLiteral(resourceName: "intro3"),
                           description: "Lorem ipsum dolor sit amet, consectetur adipiscing elit estibulum nisl nibh, placerat vitae est sed.",
                           pageIcon: #imageLiteral(resourceName: "active"),
                           color: #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0),
                           titleColor: UIColor.gray,
                           descriptionColor: UIColor.gray,
                           titleFont: titleFont,
                           descriptionFont: descriptionFont)
        
    ]
    
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        onBoardingObj.dataSource = self
        onBoardingObj.delegate = self
        bDaftar.isHidden = true
        self.pageControl.hidesForSinglePage = true


    }
    
    
    @IBAction func bDaftarB(_ sender: UIButton) {
        let vc = LoginViewController()
        self.navigationController?.setViewControllers([vc], animated: true)
    }
    
    @IBAction func skipBut(_ sender: UIButton) {
        let vc = LoginViewController()
        self.navigationController?.setViewControllers([vc], animated: true)
    }
}

extension OnBoardingViewController: PaperOnboardingDelegate {
    
    func onboardingWillTransitonToIndex(_ index: Int) {
//        skipB.isHidden = index == 2 ? false : true
        self.pageControl.currentPage = index
        if index != 2 {
            if bDaftar.isHidden == false {
                bDaftar.isHidden = true
                skipB.isHidden = false
            }
        }
        
    }
    
    func onboardingDidTransitonToIndex(_ index: Int) {
        if index == 2 {
            bDaftar.isHidden = false
            skipB.isHidden = true
        }
            
    }
    
    func onboardingConfigurationItem(_ item: OnboardingContentViewItem, index: Int) {
        //item.titleLabel?.backgroundColor = .redColor()
        //item.descriptionLabel?.backgroundColor = .redColor()
        //item.imageView = ...
    }
}

extension OnBoardingViewController: PaperOnboardingDataSource {
    func onboardingItemsCount() -> Int {
        return 3
    }
    
    func onboardingItem(at index: Int) -> OnboardingItemInfo {
        return items[index]
    }
}

extension OnBoardingViewController {
    
    private static let titleFont = UIFont(name: "Nunito-Bold", size: 14.0) ?? UIFont.boldSystemFont(ofSize: 15.0)
    private static let descriptionFont = UIFont(name: "OpenSans-Regular", size: 12.0) ?? UIFont.systemFont(ofSize: 14.0)
}

git init
git remote add origin http://fox.BlaBla.com/example/dadad.git
git add .
git commit -m "Initial commit" 

git remote -v
git push -u origin master

git log //for look log, press q to exit lo
git status
git commit -m "Initial commit"
git push -u origin master

git pull --rebase
git push

git pull --rebase origin master
git push origin master

git push -u origin master

git push

git reset --mixed origin/master
git add .
git commit -m "This is a new commit for what I originally planned to be amended"
git push origin master

git init
git add -A
git commit -m 'Added my project'
git remote add origin git@github.com:scotch-io/my-new-project.git
git push -u -f origin master

     @IBAction func logOutButton(_ sender: Any) {
        GIDSignIn.sharedInstance().signOut()
        FBSDKLoginManager().logOut()
        UserDefaults.standard.removeObject(forKey: "userToken")
        let vc = LoginViewController()
        self.navigationController?.setViewControllers([vc], animated: true)
        UserDefaults.standard.removePersistentDomain(forName: Bundle.main.bundleIdentifier!)
        UserDefaults.standard.synchronize()
    }

let defaults = NSUserDefaults.standardUserDefaults()
defaults.removeObjectForKey("Username")
defaults.removeObjectForKey("Token")
defaults.removeObjectForKey("SomeSetting")
defaults.removeObjectForKey("FavouriteArtist")
defaults.synchronize()

import Alamofire
import UIKit

class GenderViewController: UIViewController, UITextFieldDelegate {
    @IBOutlet var bPriaL: UIButton!
    @IBOutlet var bWanitaL: UIButton!
    @IBOutlet var TextTanggal: UITextField!
    
    var value = 2
    let picker = UIDatePicker()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        print(value)
        datePickerValueChanged()
        
        let toolbar: UIToolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: view.frame.size.width, height: 30))
        let flexSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
        let doneBtn: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: nil, action: #selector(doneButtonAction))
        toolbar.setItems([flexSpace, doneBtn], animated: false)
        toolbar.sizeToFit()
    }
    
    @IBAction func bLaki(_ sender: Any) {
        value = 0
        bPriaL.backgroundColor = #colorLiteral(red: 0.4663587213, green: 0.7125512958, blue: 0.102428861, alpha: 1)
        bWanitaL.backgroundColor = #colorLiteral(red: 0.501960814, green: 0.501960814, blue: 0.501960814, alpha: 1)
    }
    
    @IBAction func bWani(_ sender: Any) {
        value = 1
        bWanitaL.backgroundColor = #colorLiteral(red: 0.4663587213, green: 0.7125512958, blue: 0.102428861, alpha: 1)
        bPriaL.backgroundColor = #colorLiteral(red: 0.501960814, green: 0.501960814, blue: 0.501960814, alpha: 1)
    }
    
    @IBAction func bPriaWanita(_ sender: UIButton) {
        if value == 2 {
            let alert = UIAlertController(title: " ", message: "Silahkan lengkapi data terlebih dahulu", preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "Close", style: .default, handler: { (_: UIAlertAction) in
                
            }))
            
            present(alert, animated: true, completion: nil)
            print("need text")
            
        } else {
            DispatchQueue.main.async {
                let headers = ["Authorization": "Token"]
                let parameters = ["gender": self.value, "tanggal_lahir": UserDefaults.standard.string(forKey: "date") ?? ""] as [String : Any]
                
                let urlString = "https://yourAPi"
                
                Alamofire.request(urlString, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: headers).responseJSON { response in
                    if response.result.isFailure {
                        print("no data!")
                    } else {
                        print(response.result.value!)
                    }
                }
                
                print(parameters)
            }
        }
    }
    
    @objc func doneButtonAction() {
        view.endEditing(true)
    }
    
    func datePickerValueChanged() {
        let loc = Locale(identifier: "id")
        let toolBar = UIToolbar()
        toolBar.sizeToFit()
        
        TextTanggal.inputAccessoryView = toolBar
        TextTanggal.inputView = picker
        picker.datePickerMode = .date
        picker.locale = loc
        
        let done = UIBarButtonItem(barButtonSystemItem: .done, target: nil, action: #selector(donePressed))
        toolBar.setItems([done], animated: true)
    }
    
    @objc func donePressed() {
        let format = DateFormatter()
        format.dateStyle = .medium
        format.timeStyle = .none
        let dateString = format.string(from: picker.date)
        
        TextTanggal.text = "\(dateString)"
        view.endEditing(true)
        format.dateFormat = "dd MMMM yyyy"
        TextTanggal.text! = format.string(from: picker.date)
        
        format.dateFormat = "yyyy-M-d"
        let newDate = format.string(from: picker.date)
        
        //
        print(newDate)
        UserDefaults.standard.set(newDate, forKey: "date")
    }
}

import UIKit

class AppearsKeyViewController: UIViewController, UITextFieldDelegate {
    @IBOutlet var appears: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    // KeyboardShow
    func textFieldDidBeginEditing(_ textField: UITextField) {
        moveTextField(textField: appears, moveDistance: -250, up: true)
    }
    
    // KeyboardHide
    func textFieldDidEndEditing(_ textField: UITextField) {
        moveTextField(textField: appears, moveDistance: -250, up: false)
    }
    
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        appears.becomeFirstResponder()
        
        return true
    }
    
    func moveTextField(textField: UITextField, moveDistance: Int, up: Bool) {
        let moveDuration = 0.3
        let movement: CGFloat = CGFloat(up ? moveDistance : -moveDistance)
        
        UIView.beginAnimations("animationTextField", context: nil)
        UIView.setAnimationBeginsFromCurrentState(true)
        UIView.setAnimationDuration(moveDuration)
        view.frame = view.frame.offsetBy(dx: 0, dy: movement)
        UIView.commitAnimations()
    }
}

import IQKeyboardManagerSwift

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

      IQKeyboardManager.sharedManager().enable = true

      return true
    }
}

This my note as my problem and solution @luffyselah

import UIKit

extension UIView {
    
    @IBInspectable
    var cornerRadius: CGFloat {
        get {
            return layer.cornerRadius
        }
        set {
            layer.cornerRadius = newValue
            layer.masksToBounds = newValue > 0
        }
    }
}

import UIKit

extension UIColor {
    convenience init(r: CGFloat, g: CGFloat, b: CGFloat) {
        self.init(red: r / 255, green: g / 255, blue: b / 255, alpha: 1)
    }
}

override func viewDidLoad() {
        super.viewDidLoad()
        
        UIColor(r: 20, g: 150, b: 50)
}

import UIKit
private var __maxLengths = [UITextField: Int]()
extension UITextField {
    @IBInspectable var maxLength: Int {
        get {
            guard let l = __maxLengths[self] else {
                return 3 // (global default-limit. or just, Int.max)
            }
            return l
        }
        set {
            __maxLengths[self] = newValue
            addTarget(self, action: #selector(fix), for: .editingChanged)
        }
    }

    @objc func fix(textField: UITextField) {
        let t = textField.text
        textField.text = t?.safelyLimitedTo(length: maxLength)
    }
}

extension String {
    func safelyLimitedTo(length n: Int) -> String {
        if count <= n {
            return self
        }
        return String(Array(self).prefix(upTo: n))
    }
}

//UIView

extension UIView {
    func roundCornersView(corners: UIRectCorner, radius: CGFloat) {
        let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        self.layer.mask = mask
    }
}
}   
//UIButton   
extension UIButton {
    func roundCornersButton(corners: UIRectCorner, radius: CGFloat) {
        let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        self.layer.mask = mask
    }
}

//UIView

self.yourView.roundCornersView(corners: [.bottomRight, .bottomLeft], radius: 10)

//UIView

self.yourButton.roundCornersButton(corners: .bottomRight, radius: 10)

5. Extension UIView -> CircleView

import UIKit

class CircleView: UIView {
    
    override func draw(_ rect: CGRect) {
        layer.cornerRadius = frame.size.width / 2
   
    } 

}

How to Use :

in UIView.xib 

6. Extension UIView -> Border UIview class

import UIKit

class CustomViewBorder: UIView {
    override func draw(_ rect: CGRect) {
        layer.masksToBounds = true
        layer.borderColor = #colorLiteral(red: 0.4588235294, green: 0.7176470588, blue: 0.1803921569, alpha: 1)
        layer.borderWidth = 1
    }
}

How to Use :
just use like before.

7. Extension Array -> Remove duplicate items from an array

extension Array where Element: Hashable {
    func removingDuplicates() -> [Element] {
        var addedDict = [Element: Bool]()
        
        return filter {
            addedDict.updateValue(true, forKey: $0) == nil
        }
    }
    
    mutating func removeDuplicates() {
        self = self.removingDuplicates()
    }
}

How to Use :

just use like before.

var dataArray = ["a","a","a","b","b","c","c","e","f","c"]
dataArray.removeDuplicates()

print(dataTab) // result = ["a", "b", "c", "e", "f"]



8. Set unsafe area background color 



How to Use :

extension UIView {
    func dropShadow(scale: Bool = true) {
        layer.borderWidth = 1
        layer.borderColor = UIColor.clear.cgColor
        layer.masksToBounds = false
        
        layer.shadowColor = UIColor.lightGray.cgColor
        layer.shadowOffset = CGSize(width: -1, height: 1)
        layer.shadowRadius = 4
        layer.shadowOpacity = 0.9
    }
}

 # Uncomment the next line to define a global platform for your project

platform :ios, '9.0'



target 'youProject' do

  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks

  use_frameworks!



  # Pods for yourProject

    pod 'SVProgressHUD'



end
    

import SVProgressHUD

 override func viewDidLoad() {
        super.viewDidLoad()

   SVProgressHUD.show()

     DispatchQueue.main.async {
                Alamofire.upload(multipartFormData: { multipartFormData in
                    
                    multipartFormData.append(imageData1!, withName: "\(imageParamName)[]", fileName: "file1.png", mimeType: "image/png")
                
                    
                }, to: urlImage, method: .post, headers: headers,
                   encodingCompletion: { encodingResult in
                    switch encodingResult {
                    case .success(let upload, _, _):
                        upload.responseJSON { response in
                            debugPrint(response)
                            SVProgressHUD.dismiss()

                        }
                        
                    case .failure(let encodingError):
                        print(encodingError)
                    }
                })
 }
}