rickyngan

Using the iOS Multipeer Connectivity Framework to Create Open Source Selfie Stick

In this gist, I will discuss how I used the Multipeer Connectivity framework to create Open Source Selfie Stick. Open Source Selfie Stick is a free open-source iOS app that allows users to sync two devices over WiFi or Bluetooth and allows one to act as a remote control for the other's camera.

This tutorial assumes some knowledge of the Swift programming language and iOS development with Xcode.

Feel free to comment and point out any errors or improvements. If you'd like to help improve the app itself, make a fork from dev branch of the git repo. I plan on updating this document and explaining any newly added features or refactoring. As this gist w

Programming

Programming is hard because

Mix between English, logic and math.
It is very strict: tabs, spaces, commas and capitalization matters.
Errors can be hard to understand but often mean something simple.

Before we begin

iOS Cell Registration & Reusing with Swift Protocol Extensions and Generics

A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.

Both UITableView and UICollectionView offer a similar API to register custom cell classes:

public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)

Swift Evolution Proposal

Author: Andyy Hope

Enum Values() Functionality (Update)

It has been brought to my attention that there was more use for the unintended values() functionality that I had outline in my "Other Languages" Java example below.

On the Swift Evolution mailing list, one developer outlined their requirement to loop through an array of enum case values to add different states to objects.

Another example where a values array would be useful if the developer wants to do something different for each different case, such as setting an image on a UIButton subclass for each different UIControlState

	//
	// WebViewExampleViewController.swift
	//
	// Created by Felix Mau on 06.01.18.
	// Copyright © 2018 Felix Mau. All rights reserved.
	//

	import UIKit
	import WebKit

	import Foundation
	import UIKit

	// Usage Examples
	let shadowColor = Color.shadow.value
	let shadowColorWithAlpha = Color.shadow.withAlpha(0.5)
	let customColorWithAlpha = Color.custom(hexString: "#123edd", alpha: 0.25).value

	enum Color {

	#!/bin/sh
	# chmod a+x brew.sh
	# https://computers.tutsplus.com/tutorials/perfect-configurations-with-homebrew-and-cask--cms-20768

	# brew packages
	brew install git
	brew install gradle
	brew install openssl
	brew install ruby

	extension UIView {
	func forEachSubviewOfType<V: UIView>(type: V.Type, @noescape apply block: V -> Void) {
	for view in subviews {
	if let view = view as? V {
	block(view)
	} else {
	view.forEachSubviewOfType(V.self, apply: block)
	}
	}
	}

	// Does not work on iOS 14.0 or later, keeping the gist just for reference.
	extension UITabBar {
	override open func sizeThatFits(size: CGSize) -> CGSize {
	super.sizeThatFits(size)
	var sizeThatFits = super.sizeThatFits(size)
	sizeThatFits.height = 71
	return sizeThatFits
	}
	}

	//
	// Created by Ian Dundas on 16/03/15.
	//

	#import "UIImagePickerController+cats.h"
	#import <AVFoundation/AVFoundation.h>
	#import "Photos/Photos.h"

	/*
	example usage: