iOS is an operating system for mobile devices developed by Apple Inc. that is currently used in their iPhone, iPod touch, iPad, and Apple TV (2nd generation) devices. It shares a lot with Mac OS X, but is optimized for touch-based interfaces.

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Unit testing - Parsing data from the Weather Underground API

I'm writing unit tests for the first time. The tests are for my library on Github. I downloaded the JSON and stored it into a local file that looks like this: ...
2
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2answers
78 views

Creating an iOS form with many similar text field cells

I'm using multiple instances of an object creating a form: ...
6
votes
2answers
83 views

Clear function for Stanford iOS 8 Calculator application

I am following the Stanford iOS 8 lectures and I believe I have successfully added the "Clear" functionality to the application, but I don't know if I am doing it properly. Controller ...
3
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1answer
37 views

Deleting email using mailcore with imapSession

The following function works fine. However, deleting 1 mail takes about 4 seconds (from start of operation to the firing of the completion handler). Currently, using ...
3
votes
1answer
62 views

Retrieving values from UITableViewCell

I have a UITableview with custom cells, every cell has a button called cellButton. When the user taps the button I present an ...
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0answers
22 views

Create a new window in Titanium

I'm trying to define a new window for use inside a Classic Titanium application for iOS. For the window to work properly, some preprocessing is required. This preprocessing includes the creation of ...
7
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1answer
101 views

Localization manager based on ReactiveCocoa

I have a localization manager class which can change app language on the fly. It's using ReactiveCocoa and my main concern is that I'm not using some of RAC parts correctly. First (in ...
5
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1answer
79 views

Creating and saving blurred screenshots in iOS

I am trying to create a class that takes a screenshot of the screen, makes it blurry and saves it to NSUserDefaults. ...
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1answer
48 views

Preparing a walkthrough: Freeze effect :s

I have a method that load my walkthrough view. I have my view controller composed of a scroll view. And others views controllers used only for the walkthrough (maybe I should used xib uiview instead ...
5
votes
1answer
93 views

Caching data on disk in iOS

I've got an app that's got an activity/timeline like view. Since I don't want to retrieve the entire timeline every time, I'm caching all the events. Currently, this is how I go about it: ...
6
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2answers
131 views

Choosing a random flat color

I have a big array of custom flat colors with perhaps 100 lines: ...
0
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1answer
92 views

Singletons and subclassing - new design needed [closed]

Half a year ago, I created a singleton-class that is used as a communication with another device. I then got the idea that a demo-mode would be great, so against better knowing I subclassed the ...
0
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1answer
49 views

Handling button behaviour [closed]

I have an iOS app where I use some buttons for different things, but I'm repeating a lot. For buttons pressed: ...
8
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2answers
559 views

Swift 1.2 Singleton Implementation

I am pretty new to Swift, as a solo developer I was wondering if somebody could pass comments on the singleton implementation below. The code does work, but being new to Swift and knowing that there ...
11
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2answers
421 views

Simple LibGDX Pong game

I created my first java game in LibGDX and it's working fine but I'm 100% sure a lot of my code can be written shorter than now. Does anyone have tips how I can make this code better? Like the ...
10
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2answers
466 views

Getting WiFi SSID on iOS in Swift

I've seen a lot of Objective-C implementations but I'd like to do it in Swift. I did it like this and it seems to work just fine. Does anyone have comments and/or improvements to make? ...
10
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1answer
142 views

Changing image of a UIImageView based on a scrollView contentOffset

My task is pretty simple and my code works, it's just that my code feels a bit clumsy to me (and probably will for you too). I have a view controller (...
5
votes
1answer
137 views

Parsing travel duration data

I'm trying to parse an estimated travel duration and distance between two waypoints using Google Directions API. Tap on this to see an example of data received. ...
3
votes
1answer
201 views

Using NSPredicate with NSFetchRequest in a NSFetchedResultsController

I am learning CoreData and I wanted to have my code reviewed. As usual, I get something to work, then I attempt to refine it. I have a data model that consists of an Item entity and a subItem entity. ...
3
votes
1answer
70 views

HMSegmentedControl react to tapping on currently selected segment

I'm using HMSegmentedControl, an open-source UISegmentedControl subclass. I'm trying to react to the user tapping on the currently selected segment. HMSegmentedControl only supports reacting to a ...
8
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1answer
158 views

Networking in iOS Swift

This piece of code is working - It gives me a lot of JSON back, which I have yet to parse, but I'd like to show my code here first to get tips on how to improve what I already have: ...
4
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0answers
119 views

Switching between view controllers that are loaded in the background

I have a dining menu app that scrapes the data from a website and redisplays it in a mobile format, displayed below: If the user swipes left and right, the app will show the previous/next meal (ex. ...
6
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2answers
303 views

Segue between view controllers using NIB files

I'm learning how to develop for iOS and I want to begin with nib's before storyboard to get a better understanding. I just set up 3 view controllers: ...
5
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1answer
236 views

Closure as UIControlEvents handler

I'm expanding the functionality of this SO answer. Mainly I'm focusing on: You can add as many handlers as you want. You can remove (i.e. cancel) the handler. You can receive the ...
1
vote
2answers
66 views

Archiving data in file system for iOS

Being my first time archiving data to the file system, I would like to have my code reviewed. This simple test project works as expected, but I want to see if what I am doing is following best ...
3
votes
1answer
2k views

Pure Swift solution for socket programming

I have spend quite some time now to find out how exactly to do socket programming in Swift (Xcode 6.1). There are a few examples out there, but most of them no longer work for the latest release of ...
2
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0answers
105 views

Usage of MVVM in iOS [closed]

I'm an iOS developer and I'm guilty of having Massive View Controllers in my projects so I've been searching for a better way to structure my projects and came across the MVVM (Model-View-ViewModel) ...
2
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1answer
460 views

Subclass SKSpriteNode

I decided to subclass SKSpriteNode for a game test in Swift today and soon realised that it was not as simple as my Objective-C background suggested. After a little ...
4
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2answers
102 views

NSAssert or NSLog in defaults switch case

I am wondering if I should use NSLog(@"Switch out of range") or NSAssert(FALSE,@"Switch out of range"); in the following ...
5
votes
2answers
70 views

Consecutive animations

I'm new to Core Animations, I want to fade out two different layers one after another.I write them in a CATransaction block. I wonder if there is better approach to make such animations. ...
2
votes
1answer
398 views

Updating UITableView rows from Core Data

I am fetching or querying all the entries from my database (core-data) at three different times in my code, which I find to be an inefficient approach to writing the code. The method ...
6
votes
1answer
124 views

Creating view rects in loop

I don't use constraints or IB to create views so it's easier to create rects this way. Does it wrong totaly? ...
4
votes
2answers
111 views

Fetch plist file

I have a plist file with many nested dictionaries inside of it, and I wanna fetch them all to my code. Isn't there any more efficient way to do that than nested for-loops? ...
7
votes
2answers
144 views

Defining a simple function-calling operator

I have been writing Swift code for a while and have read a lot of tutorials about how functional paradigms can be applied to Swift. I defined a simple operator: ...
3
votes
0answers
149 views

UIScrollView Category utility function for auto sizing contentSize

I wanted a utility function on UIScrollView to automatically size the contentSize based on the content inside the scrollView. How is this? ...
3
votes
1answer
176 views

Error-handling #ifdefs for AFNetworking requests

I am using AFNetworking 1.4.3 to send and receive network messages in iOS. My application works slightly differently in DEBUG and RELEASE mode, so I need to use ...
1
vote
1answer
405 views

Correct Implementation of Custom UIView into ViewController Programatically

I am familiar with using scoreboards to construct UI elements in Xcode, but I am only beginning to learn how to make UI programmatically (with out storyboard). I wanted to know if this is the correct ...
3
votes
5answers
2k views

Turning JSON objects into custom NSObjects

Was advised to post this question here after posting to Stack Overflow. I'm pre-populating a UITableView app with data using a local JSON file. The JSON itself is very simple: ...
5
votes
1answer
185 views

Core Data model for test-taking iOS app

I'm building an iOS app for test-taking and I want to be sure of my model before proceeding. I found this post very helpful and tried to implement a simplified version for Core Data. Here are some ...
3
votes
3answers
621 views

Determine if a string has all unique characters

I'm practicing algorithms (for future interviews) while learning about Big O notation and was wondering if there's a faster or more optimal way of writing an algorithm to see if a string has all ...
5
votes
1answer
503 views

Road to MVC: the case of Settings Table View Controller

Now that I know that MVC can help do better code, I want to make my SettingsTableViewController class conform to it. ...
1
vote
2answers
414 views

Repurposing UITableView infinite scroll configuration/properties

Had my first go at implementing infinite scrolling for UITableView's in my iOS app last night, and I noticed I ended up copying/pasting quite a bit of boilerplate from one VC to the next (if I wanted ...
15
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1answer
5k views

Rewrite code from Objective-C to conform with Swift power tools and concise style

I started a project with Objective-C and rewrote it with Swift. The project contains two UITableViewControllers: MasterViewController and DetailViewController. ...
6
votes
2answers
215 views

Array from file

I have this code which is performed each time I click the 'show polygons' button. The problem is that it takes a few seconds to finish running through the code before actually drawing the polygons + ...
3
votes
1answer
383 views

Images viewer from URLs with download progress

I've created an imageViewer that will be initialized with a String array, and will download and show the images as needed. Alongside a review, could you give me a ...
3
votes
2answers
146 views

Keeping UI code DRY in iOS projects

I've subclassed UI button and used it in my View Controller's viewDidLoad method, like so: ...
3
votes
2answers
425 views

Thread-safe, in-memory LRU cache with a maximum item count of 10

I'm attempting to master LRU Caching. It must be thread safe, and it should preferably perform as well as web image-cache, (avg ~1MB). Please take a look to see if there's anything wrong, amiss, ...
4
votes
1answer
88 views

Model class for networking that uses notifications

I just finished a model class that represents an Instagram Networking client for my iOS app. I am specifically looking for a review of my use of static constants. These are strings that represent ...
6
votes
1answer
530 views

Clustering markers on Google map on zoom

I have a method that is getting called when someone zooms camera on the map (Google map). I recalculate the positions of markers of map and the code is clunky and not effective. I iterate over arrays ...
2
votes
1answer
513 views

UISegmentedControl with view-animation

I have create a UISegmentedControl and a view under it. The view under contains all a view for each segment. I am doing an animation when the segment is changing. ...