screen shot

func takeScreenshot(view: UIView) -> UIImageView {         UIGraphicsBeginImageContext(view.frame.size)         view.layer.render(in: UIGraphicsGetCurrentContext()!)         let image = UIGraphicsGetImageFromCurrentImageContext()         UIGraphicsEndImageContext()         UIImageWriteToSavedPhotosAlbum(image!, nil, nil, nil)         return UIImageView(image: image)     }

Maps

import UIKit

import CoreLocation

import MapKit

class MapViewController: UIViewController,MKMapViewDelegate,CLLocationManagerDelegate {

    var locationManager: CLLocationManager?

    var userLocation : MKUserLocation?

    @IBOutlet weak var map: MKMapView!

    

    

    override func viewDidLoad() {

        super.viewDidLoad()

        locationManager = CLLocationManager()

        

        locationManager?.desiredAccuracy = kCLLocationAccuracyBest

        locationManager?.requestWhenInUseAuthorization()

        locationManager?.startUpdatingLocation()

        

        map.showsUserLocation = true

        

        map.delegate = self

        locationManager?.delegate = self

        // Do any additional setup after loading the view.

    }

   

    @IBAction func mapview(_ sender: Any) {

         //map.mapType = MKMapType.hybrid   // satellite view 

        takeScreenshot(view: map) . // screen shot

    }

    

    override func motionBegan(_ motion: UIEventSubtype, with event: UIEvent?) {

        if motion == UIEventSubtype.motionShake {

            addAnnotation()

        }

    }

    

    func takeScreenshot(view: UIView) -> UIImageView {

        UIGraphicsBeginImageContext(view.frame.size)

        view.layer.render(in: UIGraphicsGetCurrentContext()!)

        let image = UIGraphicsGetImageFromCurrentImageContext()

        UIGraphicsEndImageContext()

        UIImageWriteToSavedPhotosAlbum(image!, nil, nil, nil)

        

        return UIImageView(image: image)

    }

    

    func addAnnotation() {

        if let uLocation = userLocation {

            let annotation = PizzaAnnotation(coordinate: uLocation.coordinate, title: "Pizaa", subtitle: "Cheese")

            self.map.addAnnotation(annotation)

        }

    }

    

    

    func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {

        let region = MKCoordinateRegionMakeWithDistance(userLocation.coordinate, 600, 500)

        self.map.setRegion(region, animated: true)

        self.userLocation = userLocation

    }

}

Note: Must on Maps: Project -- > capabilities --> Maps

Camera App Swift 3 iOS 10

import UIKit

class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {

    

    

    @IBOutlet weak var pickedImaged: UIImageView!

    

    override func viewDidLoad() {

        super.viewDidLoad()

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

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    @IBAction func camerabuttonaction(_ sender: Any) {

        

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)

        {

            let imagepicker = UIImagePickerController()

            imagepicker.delegate = self

            imagepicker.sourceType = UIImagePickerControllerSourceType.camera;

            imagepicker.allowsEditing = false

            self.present(imagepicker,animated: true,completion: nil)

            

            

        }

    }

    

    

    @IBAction func photolibraryaction(_ sender: Any) {

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary)

        {

            let imagepicker = UIImagePickerController()

            imagepicker.delegate=self

            imagepicker.sourceType = UIImagePickerControllerSourceType.photoLibrary

            imagepicker.allowsEditing = true

            self.present(imagepicker,animated: true,completion: nil)

        }

    }

    

    

    @IBAction func Saveaction(_ sender: Any) {

        

        let imageData = UIImageJPEGRepresentation(pickedImaged.image!, 0.6)

        let compressedJPEGImage = UIImage(data: imageData!)

        UIImageWriteToSavedPhotosAlbum(compressedJPEGImage!, nil, nil, nil)

        saveNotice()

    }

    

//    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

//        pickedImaged.image = image

//        self.dismiss(animated: true, completion: nil)

//        

//        

//        

//    }

    

//    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingImage image:UIImage!, edit[NSObject : AnyObject]!)

//    {

//        self.dismiss(animated: true, completion: nil);

//    }

    

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

        if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {

            pickedImaged.contentMode = .scaleAspectFit

            pickedImaged.image = pickedImage

        }

        self.dismiss(animated: true, completion: nil)

    };

    

    func saveNotice()

    {

        let alertController = UIAlertController(title: "Title", message: "succesfully saved",preferredStyle: .alert)

        let defaultAction = UIAlertAction(title:"OK", style: .default, handler: nil)

        alertController.addAction(defaultAction)

        present(alertController,animated: true,completion: nil)

        

    }

    

}

----------------------------------------------------------------------------------------------

https://www.youtube.com/watch?v=jJRNoLfoVHU

Adjust UILabel height or width to text

• First, you need to add contains height for UILabel
• Then, modify the Relation from Equal to Greater than or Equal

• Finally, change the lines of UILabel from 1 to 0

Your UILabel will automatically increase height depending on the text

How to hide keyboard in swift on pressing return key?

import UIKit

class ViewController: UIViewController, UITextFieldDelegate {

    @IBOutlet var myTextField : UITextField

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        self.myTextField.delegate = self;
    }


 func textFieldShouldClear(_ textField: UITextField) -> Bool // called when 'return' key pressed. return false to ignore.

    {

        textField.resignFirstResponder()

        return true

    }
}

tab bar key board issue swift 3

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showLogin"{

        let bottomBar = segue.destinationViewController as LoginViewController
println("showLogin seque called")

        bottomBar.navigationItem.hidesBackButton = true // hide back button
bottomBar.hidesBottomBarWhenPushed = true // hide bar menu
    }

}

How to recognize swipe in all 4 directions

override func viewDidLoad() {
    super.viewDidLoad()

    let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
    swipeRight.direction = UISwipeGestureRecognizerDirection.right
    self.view.addGestureRecognizer(swipeRight)

    let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
    swipeDown.direction = UISwipeGestureRecognizerDirection.down
    self.view.addGestureRecognizer(swipeDown)
}

func respondToSwipeGesture(gesture: UIGestureRecognizer) {
    if let swipeGesture = gesture as? UISwipeGestureRecognizer {
        switch swipeGesture.direction {
        case UISwipeGestureRecognizerDirection.right:
            print("Swiped right")
        case UISwipeGestureRecognizerDirection.down:
            print("Swiped down")
        case UISwipeGestureRecognizerDirection.left:
            print("Swiped left")
        case UISwipeGestureRecognizerDirection.up:
            print("Swiped up")
        default:
            break
        }
    }
}

How to hide keyboard in swift on pressing return key or touch any where in View

class ViewController: UIViewController,UITextFieldDelegate{

 @IBOutlet weak var chatting_Textfield: UITextField!

  

    override func viewDidLoad() {

        super.viewDidLoad()

{

self.chatting_Textfield.delegate =  self

}

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

        self.view.endEditing(true)

    }

    

    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {

        chatting_Textfield.resignFirstResponder()

        return (true)

    }

}

Framework Library not loaded: 'Image not found'

--> http://stackoverflow.com/questions/24993752/os-x-framework-library-not-loaded-image-not-found/41401354#41401354

-->http://stackoverflow.com/questions/26024100/dyld-library-not-loaded-rpath-libswiftcore-dylib/41401399#41401399

delete derived data in xcode-8

http://stackoverflow.com/questions/38016143/how-to-delete-derived-data-in-xcode-8

iOS 10.2 (14C92), iOS 10.3 which may not be supported by this version of Xcode

1. Download this imageFile iOS 10.2 here or iOS 10.3 here:
2. Copy this iOS 10.2 image file to:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/
3. Restart Xcode.

Now it Working fine.

Line Breaks and Number of Lines based on data in Swift Label (Programmatically)

Change the values in story board of label values to 

Lines --> 0

Line Break -- > Word wrap

override func viewDidLoad() {        super.viewDidLoad(){self.chatdisplayTableview.estimatedRowHeight = 600.0;        self.chatdisplayTableview.rowHeight = UITableViewAutomaticDimension;        self.chatdisplayTableview.setNeedsLayout()        self.chatdisplayTableview.layoutIfNeeded()}

Swift programmatically navigate to another view controller with navigation bar with back button / without navigation bar

Navigate to another view controller with navigation bar with backbutton

 let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

let vc = storyBoard.instantiateViewController(withIdentifier: "secondviewcontrollerid") as! secondviewcontroller

        

vc.message="value"

       

self.navigationController?.pushViewController(vc, animated: true)

-----------------------------------------------------------------------------------------------------------------------

        

Navigate to another view controller without navigation bar

let vc=storyBoard.instantiateViewController(withIdentifier: "secondviewcontrollerid") as! secondviewcontroller

        

vc.message="value"

       

self.present(vc, animated: true, completion: nil)

Apply material desings icons

step - 1
https://github.com/google/material-design-icons/blob/master/iconfont/MaterialIcons-Regular.ttf


step - 2
update info file

       

Step-3

Update Build phase

   

step - 4

Apply it into story board

Icons names with values

• https://gist.github.com/monyschuk/9769838556874e01eb7686bc675b1e12

• https://material.io/icons/

step -5 

Apply it into code

searching using searchbar in swift 3

https://www.youtube.com/watch?v=MgNRMcCWJhU

display cells only it contains data in tableview or eliminate extra empty cells in UI Tableview in swift 3

override func viewDidLoad() {

        super.viewDidLoad()

        self.yourtableview.tableFooterView = UIView()

}

Wait until swift for loop with asynchronous(Alamofire) network requests finishes executing

http://stackoverflow.com/questions/35906568/wait-until-swift-for-loop-with-asynchronous-network-requests-finishes-executing

Array is still empty even after being set in DispatchQueue.main.async Swift 3

http://stackoverflow.com/questions/40199012/array-is-still-empty-even-after-being-set-in-dispatchqueue-main-async-swift-3

http://stackoverflow.com/questions/37805885/how-to-create-dispatch-queue-in-swift-3