Abbey Jackson abbeyjackson

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Let's cross our fingers and hope Xcode builds!

Head of Product (previously Rivian, Mastercard, and Intel on Vaunt AR Glasses)

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abbeyjackson / sharedInstance Singleton

Last active May 4, 2016 13:35

sharedInstance singleton

	+ (instancetype)sharedInstance
	{
	static dispatch_once_t once;
	static id sharedInstance;
	dispatch_once(&once, ^{
	sharedInstance = [[self alloc] init];
	});
	return sharedInstance;
	}

abbeyjackson / Explode completed tetris blocks

Last active September 13, 2015 04:54

1:09 on Stanford iOS Lecture 8 https://youtu.be/aS6PBmBAP1g explode completed blocks, like tetris

	- (BOOL)removeCompletedRows
	{
	NSMutableArray *dropsToRemove = [[NSMutableArary alloc] init];
	for (CGFloat y = self.gameView.bounds.size.height-DROP_SIZE.height/2; y > 0; y -= DROP_SIZE.height)
	{
	BOOL rowIsComplete = YES;
	NSMutableArray *dropsFound = [[NSMutableArray allc] init];
	for (CGFloat x = DROP_SIZE.width/2; x <- self.gameView.bounds.size.witdh-DROP_SIZE.width/2; x += DROP_SIZE.width)
	{
	UIView *hitView = [self.gameView hitTest:(CGPointMake(x, y) withEvent:NULL];

abbeyjackson / Slow scrolling

Last active September 13, 2015 04:54

However, be careful with cell layer properties such as `cornerRadius` or `maskLayer` because it could slow your scroll down this would cache the layer as a bitmap and uses the bitmap during the animation instead of keep drawing on every frame change

	layer.shouldRasterize = true
	layer.rasterizationScale = [UIScreen mainScreen].scale

abbeyjackson / Paged UIScrollView

Last active September 13, 2015 04:53

How to make a paged scrollview from images and text. Set up all outlets in addition to this. This is using objects for each "page" which contain two NSString properties and one UIImage property. Search: Announcement Slider, Image Slider, Paged Slider, Scrollview Slider, UIScrollview.

	- (void)viewDidLoad {
	[super viewDidLoad];

	self.array = [self configureArray];

	for (int i = 0; i < self.array.count; i++) {

	CGRect frame;
	frame.origin.x = self.view.frame.size.width * i;
	frame.origin.y = 0;

abbeyjackson / Container View Controller

Created September 15, 2015 06:01

This is the code for the Container View Controller when setting up a UIContainerView From http://sandmoose.com/post/35714028270/storyboards-with-custom-container-view-controllers

	#import "ContainerViewController.h"

	#define SegueIdentifierFirst @"embedFirst"
	#define SegueIdentifierSecond @"embedSecond"

	@interface ContainerViewController ()
	@property (strong, nonatomic) NSString *currentSegueIdentifier;
	@end

	@implementation ContainerViewController

abbeyjackson / Log UI Elements

Created September 16, 2015 16:59

NSLog / print out what UI element you tap. For finding what code / method / function belongs to what element. From Aryan Ghassemi in ios-dev slack

	- (void)viewDidLoad {
	[super viewDidLoad];
	[self addGesture:self.view];
	}

	- (void)addGesture:(UIView *)aView {
	UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didDetectClick:)];
	[aView addGestureRecognizer:gesture];

	for (UIView *subView in aView.subviews) {

abbeyjackson / indexPath of cell

Created September 29, 2015 19:04

get indexPath (index path) of current cell

	UITableViewCell *cell = sender;
	NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];

abbeyjackson / threading

Created September 29, 2015 20:26

synchronous asynchronous background main thread and queue (usually just use "queue" as variable name, descriptive names below only for clarity)

	// get global queue
	dispatch_queue_t globalQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

	// create serial background queue
	dispatch_queue_t newQueue = dispatch_queue_create("com.domain.app.queuename", 0);

	// dispatch asynchronously to a specific thread
	dispatch_async(queueName, ^{
	// the slow stuff to be done in the background
	});

abbeyjackson / custom Tab Bar using tags

Last active October 16, 2015 20:30

multiple buttons and one delegate function, using tags and protocol, in Swift

	in UIViewController:
	import UIKit

	class tempViewController: UIView {

	var array : NSArray

	func buttonPressed(navigationBar: ScrollBar, sender: UIButton) {
	switch sender.tag {
	case 0:

abbeyjackson / Custom TabBar multiple IBAction, no tags

Last active October 16, 2015 20:34

Multiple buttons with same protocol - delegate function, using multiple IBActions instead of tags

	in tabBar.swift

	protocol TabBarDelegate {
	func buttonPressed(tabBar: TabBar, section: SectionType)
	}

	var delegate: TabBarDelegate?

	@IBAction func buttonAPressed(sender: UIButton){
	delegate?.buttonPressed(self, section: SectionType.caseA)

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