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. Use this tag for questions about iOS-specific code.
8
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43 views
First assignment for Stanford iOS8 Course: enhancing a calculator
I recently started learning Swift through Stanford iOS8 Course. The first assignment is to add some features to simple Calculator which was presented during lectures.
List of tasks:
add button for ...
6
votes
1answer
41 views
Checking two text field for match and checking for null
Is this the most efficient way to do this? Any suggestions on some thing I might have missed or can do better?
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-2
votes
0answers
23 views
Load table view else load web view [closed]
I have a View Controller. Within this view controller I have a menu and a tab bar depending on what menu item is clicked.
Depending on what is clicked in the menu/the tab bar, I want to load either a ...
7
votes
1answer
33 views
Comparing 2 arrays of dictionaries and saving user preferences
I will start by explaining the situation and then show some code. I have an app that has an array of "default" settings to display on a user's dashboard. The user can modify these settings to enable ...
-1
votes
0answers
29 views
Save bunch of data to CoreData
I have a ViewController with a bunch of data and I want to save it to CoreData. I have manager class which add, delete, find etc. that kind of data.
My first ...
1
vote
1answer
56 views
Determining the number of days from today
Today I've got a pretty simple snippet to be reviewed. The function is extremely simple, as all it does is retrieve some entities from Core Data and then compares the ...
2
votes
1answer
60 views
Idiomatic way of handling optional values in Swift
I'm new to iOS development and also Swift. I'm working on a project consisting of a menu that leads to my various experimentations with the iOS SDK.
I've written the menu titles and ...
5
votes
2answers
65 views
Registering a plist to NSUserDefaults
I've been struggling with registering a plist into NSUserDefaults and I've finally got it working, though I'm not sure that its written properly. I'm hoping someone ...
5
votes
2answers
103 views
Simple 3…2…1 countdown in iOS app
I would like to display a 3...2...1 countdown on my iOS app (before to take a picture) but I didn't find an elegant solution. I don't want to make a Countdown app with an NSTimer. For me the important ...
7
votes
3answers
343 views
Swift iOS - Call back functions
I'm working on an iOS app which handles API request based on authentication. Authentication is done through OAuth and every API request is sent along with ...
3
votes
1answer
72 views
1
vote
1answer
24 views
Push Notifications - save token id into a database using Asynchronous Request
based on this answer I modified my code. Is this the correct approach now?
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3
votes
1answer
125 views
Save token id into a database in Swift
I want to save my users tokens id into my database using POST request in Swift (here PHP code here). I am a bit confused about synchronous and asynchronous request.
Is this code the right way to do ...
2
votes
1answer
68 views
BaseTableViewController with pull to refresh and auto load more
I've implemented a table view controller for the purposes of subclassing. The table view controller implements a pull-to-refresh which will automatically reload the table view's data. I am looking ...
5
votes
1answer
122 views
Avoiding callback chaining in authenticator
I'm developing an iOS Application in Swift that uses Google Cloud Endpoints as its backend. For now, I've just written the code for the user to login with his Gmail account and I've refactored it as ...
0
votes
0answers
65 views
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
votes
2answers
139 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
164 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
votes
1answer
62 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
95 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 ...
1
vote
0answers
24 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
votes
1answer
133 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
votes
1answer
93 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.
...
1
vote
1answer
53 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
143 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
votes
1answer
170 views
0
votes
1answer
113 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
votes
1answer
51 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:
...
13
votes
3answers
3k 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
votes
2answers
494 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 ...
11
votes
2answers
1k 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
votes
1answer
197 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
148 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
343 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
81 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
votes
1answer
196 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:
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4
votes
0answers
132 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
votes
2answers
519 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
votes
1answer
316 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
71 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 ...
4
votes
1answer
3k 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
votes
0answers
117 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
votes
1answer
656 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
votes
2answers
111 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
73 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
572 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
131 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
122 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?
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7
votes
2answers
147 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
164 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?
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