Stephen Francis stephen-francis

Mobile developer at PillPack, poodle enthusiast.

stephen-francis / adjustsImageSizeForAccessibilityContentSizeCategory.swift

Created March 6, 2019 00:01

adjustsImageSizeForAccessibilityContentSizeCategory

	extension UIImageView {

	static func scaledImageWithName(_ name: String, sizeValue: CGFloat) -> UIImageView {
	let widthAndHeight = UIFontMetrics.default.scaledValue(for: sizeValue)
	let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: widthAndHeight, height: widthAndHeight))
	imageView.image = UIImage(named: name)
	return imageView
	}
	}

stephen-francis / draganddrop.swift

Last active February 13, 2018 15:56

	// Enable dragging from the image view (see ViewController+Drag.swift).
	let dragInteraction = UIDragInteraction(delegate: self)
	dragInteraction.isEnabled = true // this must be enabled for apps targeting iPhone
	imageView.addInteraction(dragInteraction)

stephen-francis / genericLinkedList.swift

Last active May 8, 2017 19:33

Simple linked list in Swift

	class ListNode<T> {

	var data: T
	var next: ListNode?

	init(_ data: T) {
	self.data = data
	}

	// nodes are inserted at the end of the list

stephen-francis / vibrate.swift

Last active April 28, 2017 17:29

	import AudioToolbox.AudioServices

	func vibrate() {
	AudioServicesPlaySystemSoundWithCompletion(kSystemSoundID_Vibrate) {
	// do what you'd like now that the sound has completed playing
	}
	}

stephen-francis / Onboarding.swift

Last active March 29, 2017 13:57

	public enum OnboardingState: Int {

	case notStarted
	case addLocations
	case addStops
	case preferences
	case finished

	func storyboardIdentifier() -> String {
	switch self {

stephen-francis / MainThreadDidSetNoCrash.swift

Last active February 28, 2017 13:53

	var foodStuffs = [Food]() {
	didSet {
	// because we perform this operation on the main thread, it is safe
	OperationQueue.main.addOperation { // this will not crash
	self.tableView.reloadData()
	}
	}
	}

stephen-francis / MainThreadDidSetCrash.swift

Last active February 28, 2017 21:17

	class FoodTableViewController: UIViewController {
	var foodStuffs = [Food]() {
	didSet {
	// looks good, right?
	self.tableView.reloadData() // this will crash :( :(
	}
	}

	func update() {
	Updater.doSomethingInBackground { foodResults in

stephen-francis / WeatherController.swift

Created February 21, 2017 13:06

Example of getting weather info from the OpenWeatherMap API, written in Swift.

	//
	// WeatherController.swift
	// Commute
	//
	// Created by Stephen Francis on 2/17/17.
	// Copyright © 2017 Stephen Francis. All rights reserved.
	//

	import CoreLocation

stephen-francis / isStatusBarHidden.swift

Created January 24, 2017 21:50

	// pre-iOS 9.0, UIViewControllers could update status bar hidden state at the application level, like so:
	override func viewDidAppear(_ animated: Bool) {

	super.viewDidAppear(animated)

	// set the status bar hidden at the application level
	// status bar will be hidden on all view controllers
	UIApplication.shared.isStatusBarHidden = true
	}

stephen-francis / statusBar.swift

Last active January 24, 2017 21:57

	// override this in your UIViewController subclass, dictates status bar state for the view controller
	override var prefersStatusBarHidden: Bool {
	return true
	}