jazzedge

See:https://stackoverflow.com/questions/26791477/xcode-device-locked-when-iphone-is-unlocked

As is mentioned in several answers, the device is locked message is actually referring to the device not trusting the MacBook. In my case, I think my phone defaulted to not trusting my computer after updating to iOS 10. Here are the steps that worked for me to reset the settings (this is the same process that is mentioned in the Apple support page in tehprofessors' answer):

Disconnect your device from your MacBook
On your device go to Settings > General > Reset, then tap Reset Location & Privacy
Plug your device back into your computer, and on the device you will be prompted to trust the computer. Tap trust.
Rebuild in XCode and the device locked error should disappear.

jazzedge

See: https://marcosantadev.com/calayer-auto-layout-swift/
Works when you change orientation


import UIKit

class WelcomeViewController: UIViewController {

    var gradientLayer: CAGradientLayer!
    

jazzedge

See: http://iosrevisited.blogspot.co.uk/2017/10/firebase-cloud-firestore-example-project-swift.html

01. Set up Firebase Cloud Firestore To iOS Project :
pod 'Firebase/Core'
pod 'Firebase/Firestore'

02. Add google plist to project

03. Initialize Firebase in AppDelegate.
import Firebase

jazzedge

import UIKit

extension UIColor {

    static func rgbColor(r: CGFloat, g: CGFloat, b: CGFloat, a: CGFloat = 1.0) -> UIColor {
        return UIColor(red: r/255.0, green: g/255.0, blue: b/255.0, alpha: a)
    }

}

jazzedge

We couldn’t find that file to show.

jazzedge

Note: I'm not sure this works.

I've found that besides setting device to iPhone X there is one more remedy: turning source control off in Preferences > Source Control > "Enable Source Control".
It looks like if it is not iPhone X, the Interface Builder updates a lot of stuff in file system and all those uneeded changes are also handled by source control managing something.

jazzedge

displayAlertWithTitle(title: "Detected", message: "Edge swipe was detected")


/* Just a little method to help us display alert dialogs to the user */
    func displayAlertWithTitle(title: String, message: String){
        let controller = UIAlertController(title: title,
                                           message: message,
                                           preferredStyle: .alert)
        
        controller.addAction(UIAlertAction(title: "OK",

jazzedge

See:https://www.hackingwithswift.com/example-code/uikit/how-to-detect-edge-swipes

override func viewDidLoad() {
    super.viewDidLoad()

    let edgePan = UIScreenEdgePanGestureRecognizer(target: self, action: #selector(screenEdgeSwiped))
    edgePan.edges = .left

    view.addGestureRecognizer(edgePan)
}

jazzedge

01. Write your UIViewController class like this:

import UIKit

class UserProfileViewController: UIViewController {
 
    override func viewDidLoad() {
        super.viewDidLoad()
        self.hideKeyboardWhenTappedAround()
        addKeyboardObservers()

jazzedge

See: https://stackoverflow.com/questions/31774006/how-to-get-height-of-keyboard-swift

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var textFieldBottomConstraint: NSLayoutConstraint!
    
    
    override func viewDidLoad() {