iOS & ObjectiveC – Santiapps – Arduino, Raspberry Pi, Python, Internet Of Things, IoT, iOS, Android

iOS 8 HealthKit Santiapps Marcio Valenzuela

Saving HealthKit Data & Closures

August 29, 2022August 29, 2022marskoko1 Comment

This code bit saves: healthKitStore.saveObject(bmiSample, withCompletion: { (success, error) -> Void in if( error != nil ) { println(“Error saving BMI sample: \(error.localizedDescription)”) } else { println(“BMI sample saved successfully!”) } }) The method signature is: saveObject(object: HKObject!, withCompletion completion: ((Bool, NSError!) -> Void)!) This method takes an HKObject which is bmiSample and it takes a completion closure which itself takes a bool & error and returns void. So in our method call, we pass in the bmiSample as the HKObject and for the success and error completion block we say: if error is NOT nil then log that error’s description, else log that the bmiSample was saved successfully. … Read More

HealthKit for iOS8: Part 7

June 26, 2015marskoko1 Comment

4. CoreData for other non-health stats You made it to the end! Ok, so we are basically going to be adding another store to our app and reading and writing data to THAT store as well. First let’s add a new tab and make it a UITableViewController as well. It will have dynamically populated cells. Now embed it! Your final storyboard should look like this: Add a new Swift class called Swimming Data and set that new UITableViewController scene to its class. Make that class file look like this: import Foundation import UIKit class SwimmingData: UITableViewController { } Now we must add CoreData. To do this we need to… Read More

HealthKit for iOS8: Part 6

June 12, 2015marskoko2 Comments

Here is the start of our WorkOut view controller: import Foundation import UIKit import HealthKit class WorkoutViewController: UITableViewController, UITextFieldDelegate { @IBOutlet var numberOfLapsTextField: UITextField! @IBOutlet var metersPerLapTextField: UITextField! @IBOutlet var workoutDurationTextField: UITextField! @IBOutlet var paceTextField: UITextField! var numberOfLapsValue: NSString? var metersPerLapValue: NSString? var workoutDurationValue: NSString? var userWeight: Double? var healthStore:HKHealthStore? } We import what we need, we subclass UITableViewController and add the Text Field delegate protocol. Here I have created 4 labels for: numberOfLaps metersPerLap workoutDuration pace These labels have an underlying variable for each. The reason the first 3 are strings is because these are not health kit data per se. These will be stored in CoreData. However they… Read More

HealthKit for iOS8: Part 3

January 11, 2015April 23, 2017marskoko1 Comment

Great! Now let’s move on to the Journal View Controller. It’ll be a good relax! 🙂 Ok we start out importing the frameworks we need: import UIKit import HealthKit Ok now let’s declare our class properties: class JournalViewController: UITableViewController { let JournalViewControllerTableViewCellReuseIdentifier: NSString = “Cell” var foodItems: NSMutableArray? var energyFormatter: NSEnergyFormatter { var energyFormatter: NSEnergyFormatter? var onceToken: dispatch_once_t = 0 dispatch_once(&onceToken, { energyFormatter = NSEnergyFormatter() energyFormatter?.unitStyle = NSFormattingUnitStyle.Long energyFormatter?.forFoodEnergyUse = true … Read More

Swift is Confusing: Classes, Structures, Designated Initializers, Instance Methods, Type Methods, Functions, Methods, Convenience Initializers & External Parameter Names

October 10, 2014marskoko1 Comment

Class vs Structs Both: Store values, initialize, subscripts, extensible & protocol Class can inherit, de-initialize, reference counting & typecast Functions vs Methods Methods are FUNCTIONS INSIDE A CLASS Functions can be inside or OUTSIDE A CLASS! Cannot use functionName(param1,param2) to call a function declared inside a class {} Methods: It is implicitly passed the object for which it was called It is able to operate on data that is contained within the class Instance Methods vs Type Methods (Instance Method vs Class Methods I think) Methods are functions that are associated with a particular type. Classes, structures, and enumerations can all define instance methods, which encapsulate specific tasks and functionality for… Read More

iOS : Swift : Blocks = Closures

September 3, 2014marskoko3 Comments

I’ve never really liked blocks in ObjC. When Swift came out it made things more complicated for me because I’ve never really liked C either. Finally when I had to deal with closures in Swift, well that’s just gonna piss a lot of people off! After a few days reviewing tons of material online, and I mean TONS! I came to understand this: The only C-like exposure I had prior to ObjC was a little PHP. So that allows me to understand a function, which is the equivalent of a method in ObjC: DECLARING func sayHello( ) { println(“Hello World”) } CALLING sayHello( ) RESULT Hello World Even… Read More

iOS7 Custom Transitions

August 26, 2014marskokoNo Comments

iOS7 Series –Custom Transitions There is a hierarchy of actors you need to visualize here. It goes a little something like: A TransitioningDelegate An AnimatedTransitioning A ContextTransitioning The VC you start out with and that will call the transition will adopt the first protocol, the TransitioningDelegate Protocol. The purpose of doing so is to obtain the authority to manage the entire transition process. You will then create a Transitioning class which we can call the Transition Manager. This class will adopt the AnimatedTransitioning protocol. The purpose of this protocol is to animate the transition. The Transition Manager class receives all the necessary information from the Transitioning Context (a protocol adopted… Read More

Business of iOS Apps

August 8, 2014marskoko1 Comment

I keep reading articles or watching videos of iOS businesses who made it and they share their wisdom of the Common 10 Mistakes iOS developers make. Guess what? Most of those mistakes, although they are worded as developer concepts, they are really business concepts. Common Mistakes: Don’t need a marketing guy. Don’t need a business guy. Don’t need a business perspective. Usually worded as, I thought I would get rich quick, or Im looking for a one hit wonder, or Im a great programmer and I thought that was enough. Well guess what, if you are going to sell something and make more than 99c for it, its gonna need… Read More

NSURLSession vs NSURLConnection by Santiapps.com Marcio Valenzuela

Fetching data from an iOS app – The new NSURLSession API

August 1, 2014marskoko1 Comment

Ok, this is gonna be short, I promise! 🙂 Do you remember those apps you’ve got stored away or the ones you are working on that fetch data from the web with a NSURLConnection? Time to update them, here’s how. Basically you have a method that calls a web fetch and is somehow signaled to use that received data to refresh a UI. If you used NSURLConnection sendAsynchronousRequest:, you have the issue that it blocks the main thread. It does carry out requests asynchronously from each other, but each request does indeed block the main thread since it is carried out in the main queue. Alternatively, you can use a… Read More

Creating a Menu in SpriteKit

July 26, 2014marskoko2 Comments

Cocos2d has a easy to use CCMenu object to which you add CCMenuItems. In SpriteKit however, you are back to UIKit objects. This doesn’t not mean its more complicated, its just different :-). You will need to create a UIControl such as a button or you can use SpriteKit’s SKNode to create the visual object onscreen: SKLabelNode* someNode = [SKLabelNode labelNodeWithFontNamed:@”Chalkduster”]; [someNode setText:@”Play Game”]; [someNode setPosition:CGPointMake(CGRectGetMidX(self.frame)+5,CGRectGetMidY(self.frame)-40)]; [self addChild: someNode]; Now you simply connect the object action to some event like so: for (UITouch *touch in touches) { CGPoint location = [touch locationInNode:self]; if ([someNode containsPoint:location]) { SKTransition* present = [SKTransition revealWithDirection:SKTransitionDirectionDown duration:1]; GameScene* gameScene = [[GameScene alloc] initWithSize:CGSizeMake(1024, 768)]; [self.scene.view… Read More

Creating a simple UICollectionView in iOS

May 9, 2014marskoko3 Comments

Steps 1) Create Master-Detail Application & Replace the MasterViewController First we want to create a Master-Detail Application just because it sets up a Master-Detail relationship even though thats the first thing we are going to break :). So go ahead and create a new project in XCode4 based on a Master-Detail Application type. Use ARC, Storyboards and CoreData because we will use CoreData to store information. Your storyboard should look like this: Now select the Master scene until its highlighted in blue and delete it with the Delete key. We simply replace it by dragging in a UICollectionViewController onto the storyboard in its place. This places a UICollectionViewController scene with… Read More

iOS7 – UIKit Dynamics

April 25, 2014marskokoNo Comments

iOS7 Series – UIKit Dynamics Incorporating UIKitDynamics into your app is pretty simple! The great thing about it is that you really get the most bang for your buck because the end result has a really big WOW Factor which is certain to impress your users. Let’s take a quick conceptual drive around UIKitDynamics. First we adopt the protocol into the ViewController which will implement UIKitDynamics, why? Well because the objects which will be animated in the end will have to send back a lot of signals like “Hey, I collided with a boundary” or “hey I just hit somebody else and I was going this fast, in this… Read More

iOS Smarties :)

April 15, 2014marskokoNo Comments

Everyone loves Smarties! And much the same way Smarties Candies make you smarter… today we are talking about Code Snippets that make you….er Smarter! More than a source of cut/paste Objective C source code, this is meant to be a quick reference. As such, some of these will be incomplete and I will be filling them up as I go along. 1) UIAlertView UIAlertView *internetAlert = [[UIAlertView alloc] initWithTitle:@”No hay farmacias” message:@”Favor cambie sus parámetros” delegate:self cancelButtonTitle:@”Cancelar” otherButtonTitles:@”Ok”, nil]; [internetAlert show]; 2) NSNotification //1. Register as observer of notifications in viewDidLoad [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(receiveTestNotification:) name:@”TestNotification” object:nil]; //2. NSNotifCtr CLEANUP in viewDidUnload [[NSNotificationCenter defaultCenter] removeObserver:self]; //4. Post notif to NSNotif in… Read More

iOS7 Sprite Kit for Game Design for iPhone & iPad

March 21, 2014marskoko3 Comments

iOS 7 Series – Sprite Kit Welcome to iOS7 and to start off, I want to kick things off with SpriteKit. Although it deals with video games, many companies are using iOS apps as a marketing tactic to engage their users in an effort to promote their products. SpriteKit is the most prominent feature in iOS7 so we’re going to take a quick tour. Go ahead and create a New Project in XCode5 and select the SpriteKit template (the bottom right icon): Click next and fill in your project data. Once you are in the main XCode window notice we have the following files in the Project Navigator: 1) AppDelegate… Read More

How to create an app – Not programmatically

February 24, 2014marskokoNo Comments

A fellow coder asked: “How does one go about developing an app from scratch? Where does one start?” My response follows: Some will say its a matter of style and you have to find your own. And eventually you will, after a lot of copy-paste programming. I started in 2009 and my first app was a copy-paste of a few different projects. All the app did was connect to the Internet, download XML and parse it into a uilabel. Then I decided to look into more complex app samples. So I downloaded a few from Apple. In particular I remember iPhoneCoreDataRecipes. In hindsight, it was too complex for a beginner… Read More

ObjC Programming

February 23, 2014marskokoNo Comments

The Big Picture ObjC is OOP which means objects send messages to other objects. Before getting into messages, let’s define objects. Objects. This is very diverse. An object can be a string, a number, a Boolean, an integer, an array, a dictionary or even one you create yourself. There are any types of objects but let’s start at the root object. The root object is called NSObject. You’ll see references to it in code but you’ll hardly ever use it directly. This is called the root object because it’s the starting point of any object. It’s like Adam and Eve rolled into one and ANY other kind of object in… Read More

Static Libraries in iOS – Video Tutorial

February 22, 2014marskokoNo Comments

Libraries is another one of those rather obscure topics for newbie programmers, kinda like Blocks and Delegates/Protocols. Think of libraries as just that, a resource you can use which doesn’t belong to you. A loaner 🙂 NOTE: If you need a nice tutorial on Blocks or Delegates, check out: Video Tutorial: Objective-C Blocks Video Tutorial: Objective-C Protocols and Delegates Ok back to our tutorial! Well a library is a piece of code that you can use (by importing it into your projects) but its not yours, so you can’t really do what you want to that piece of code, except use its functionality. In this tutorial we will create our… Read More

Blocks & Completion Handlers

February 3, 2014marskoko1 Comment

Think of blocks as c functions: (return type)functionName(input1, input2) { input1 + input2 } and you call it like this: return type = functionName (1,2) Blocks are similar: NSInteger (^mathOperation)(NSInteger x, NSInteger y) = ^NSInteger(NSInteger x,NSInteger y){ return x + y; }; You call it like this: NSInteger sum = mathOperation(1,2); Now imagine how cool it is to, instead of just passing a value to a method (like saying: here is a value, evaluate it), you can pass a whole method to it (like saying: here is something else to do!). Or better yet, here do this but only when you finish doing that! Like, load the users posts or tweets after you finish authenticating him!… Read More

Creating Reactive Cocoa Xcode project

January 15, 2014marskoko1 Comment

Earlier I posted an article on using RAC. It was a plain vanilla example of using RAC. While I AM working on a second post with more useful examples, I wanted to go over how to ADD RAC to a project. First, you must have ruby installed. This means, go to Terminal and type in: which ruby This is what I get: …../.rvm/rubies/ruby-2.1.0/bin/ruby Important to note here that if you don’t have that rvm bit, you might still have ruby. RVM stands for Ruby Version Manager and for what little I know about ruby, its one of the managers available for ruby but there are others. If… Read More

Reactive Cocoa in 3 simple steps!

January 10, 2014marskokoNo Comments

If you made it through installing ReactiveCocoa, via Cocoapods, which required you to have ruby, update it and install Cocoapods and CLT, then you’re already ahead! So here is RAC. RAC is used when you need to be notified of something important in your app; completed download, some long asynchronous task like data fetching, parsing or image processing is complete or to update UI such as a completed form produces an active Submit button or an incomplete field yields a red warning sign to the user. How does RAC work? You basically create signals for events you are interested in (like the ones mentioned above) and then you tie those… Read More