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168 votes
6 answers
100k views

What is the difference between a .xib file and a .storyboard?

Can someone explain in simple words the difference between .xib and .storyboard?
gsach's user avatar
  • 5,735
161 votes
1 answer
23k views

Xcode 4.2 - declaration of '...' will not be visible outside of this function warning

I use Apple Reachability class from Apple Sample code Reachability in Xcode 4.2 and new Apple 3.0 compiler I get warning in this class that + (Reachability*) reachabilityWithAddress: (const struct ...
Sergnsk's user avatar
  • 3,313
128 votes
16 answers
82k views

iPhone : How to detect the end of slider drag?

How to detect the event when the user has ended the drag of a slider pointer?
DroidHeaven's user avatar
  • 2,444
113 votes
6 answers
24k views

To ARC or not to ARC? What are the pros and cons? [closed]

I've yet to use ARC, since the majority of the code in the project I'm working on at the moment was written pre-iOS 5.0. I was just wondering, does the convenience of not retaining/releasing ...
Simon Withington's user avatar
109 votes
7 answers
58k views

iOS 5 Best Practice (Release/retain?)

As a beginning iPhone programmer, what is the best practice for writing apps to be used either with iOS 5 or older versions? Specifically, should I continue using the release/retain of data, or should ...
Geekgirl's user avatar
  • 1,322
108 votes
3 answers
15k views

Override setter with arc

@interface Article : NSObject @property (nonatomic, strong) NSString *imageURLString; @end @implementation Class @synthesize imageURLString = _imageURLString; - (void)setImageURLString:(NSString ...
rowwingman's user avatar
  • 5,581
103 votes
8 answers
51k views

Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK?

I just recently downloaded the Xcode 4.2 with iOS 5 SDK package and I immediately noticed that I am unable to use my iPhone 3Gs with iOS 4.2.1 for debugging. I am only able to debug and test on my ...
Greg Ellis's user avatar
  • 1,957
91 votes
5 answers
140k views

What is the iOS 5.0 user agent string?

What is the iOS 5.0 user agent string? Here is the iOS 4.0 user agent: What is the iPhone 4 user-agent?
chown's user avatar
  • 52.2k
88 votes
1 answer
128k views

How to select Multiple images from UIImagePickerController [duplicate]

In my application, I have to select more images ie; up to 3 images from library or capture of images.
Vara's user avatar
  • 989
88 votes
9 answers
16k views

Xcode version 4.6.2 (4H1003) compiler error

I just updated to Xcode version 4.6.2 (4H10003) and tried to run a previously working application project in the simulator and received the following error and the build failed. PCH file built from ...
OscarTheGrouch's user avatar
85 votes
4 answers
53k views

ARC forbids Objective-C objects in structs or unions despite marking the file -fno-objc-arc

ARC forbids Objective-C objects in structs or unions despite marking the file -fno-objc-arc? Why is this so? I had the assumption that if you mark it -fno-objc-arc you don't have this restriction.
Zsolt's user avatar
  • 3,700
84 votes
10 answers
85k views

Share data between two or more iPhone applications

Is this possible to share data between two applications on the same device? Or can I allow some other application to use my application's information / data or in any other way? For example, the ...
Kamleshwar's user avatar
  • 2,977
80 votes
7 answers
18k views

AVAudioRecorder throws errors

I use AVAudioRecorder to record, it worked fine on iOS 4 devices, but yesterday we found out recording is broken on iOS5. Using the iPhone 5 simulator I got following error: 2011-08-02 11:09:03.586 ...
dcai's user avatar
  • 2,555
79 votes
1 answer
17k views

What properties can I set via an UIAppearance proxy?

What properties can I set via an UIAppearance proxy? Apple's UIKit documentation does not list them. Is there a list of these properties?
Emile Cormier's user avatar
66 votes
3 answers
14k views

iMessage Style Receding Keyboard in an iOS App

I've been wondering if it is possible to replicate the behavior of Apple's iOS5 keyboard in the messages app, without using any private API calls. When you scroll down past the keyboard in the ...
orta's user avatar
  • 4,265
59 votes
3 answers
46k views

How to call an action when UISwitch changes state?

I want to perform some action when UISwitch changes its state, thus is set on or off. How do I do this? I need to pass two objects as parameters. It's created in code, thus not using xib.
Ondrej's user avatar
  • 1,628
58 votes
4 answers
23k views

Do I have to call addSubview after calling addChildViewController?

I'm trying to create a container view controller using iOS5 and new methods like addChildViewController. Do I have to call addSubview after calling addChildViewController? Do I have to call ...
Ricardo's user avatar
  • 2,891
57 votes
2 answers
80k views

How to insert utf-8 mb4 character(emoji in ios5) in mysql?

I am using mysql 5.5.10, and its character_sets are | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | ...
plenty's user avatar
  • 583
54 votes
6 answers
42k views

Get the extension of a file contained in an NSString

I have an NSMutable dictionary that contains file IDs and their filename+extension in the simple form of fileone.doc or filetwo.pdf. I need to determine what type of file it is to correctly display a ...
jer-k's user avatar
  • 1,413
54 votes
7 answers
50k views

How to change the UISwitch default color(blue)

How to change the default color(blue) of a UISwitch?
Prasad's user avatar
  • 1,904
53 votes
4 answers
70k views

Error with NSJSONSerialization - Invalid type in JSON write (Menu)

I have an App using core data with 3 entities with very similar attributes. The relationship is such as: Branch ->> Menu ->> Category ->> FoodItem Each entity has an associated class: example I ...
Vaibhav Garg's user avatar
  • 3,679
51 votes
10 answers
18k views

Unable to process application info.plist validation at this time due to a general error (1095)

I am creating a newsstand application. the application is ready, now i am trying to upload the app in apple store using Application Loader. While uploading the zip file its showing the error message ...
Naveen's user avatar
  • 900
50 votes
9 answers
65k views

Xcode/iOS5: Move UIView up, when keyboard appears

I'd like to move up my view, when the keyboard is shown. The keyboard (height: 216) should push up my view with it's height. Is this possible with a simple code?
filou's user avatar
  • 1,609
50 votes
3 answers
19k views

iOS 5: Curious about UIAppearance

On the tech talk 2011 I saw a speech about the new UIAppearance protocol. There is not a lot of documentation out there yet. I will shortly summarize what I remember to explain where my question is ...
d.ennis's user avatar
  • 3,455
46 votes
10 answers
32k views

How to "cancel" a UIStoryBoardSegue

Does anyone know how to "stop" a segue transition conditionally: My table view cells represent products which can be viewed in a drill-down "detail" view... or cannot! (It depends on a couple of ...
Fabio B.'s user avatar
  • 9,282
46 votes
6 answers
16k views

iOS 5 does not allow to store downloaded data in Documents directory?

I have made an application for my client by keeping target iOS as 4. But since the application still not submitted to Apple store, my client is planning to upgrade it for iOS 5.0. For this I read ...
Naved's user avatar
  • 4,068
45 votes
1 answer
19k views

how to use delegates with Automatic Reference Counting

I've jumped on the ARC bandwagon. In the past I would have my delegate properties declared like this: @property(assign) id<MyProtocol> delegate; So I thought I would do this under ARC: @...
Mike S's user avatar
  • 4,112
44 votes
4 answers
71k views

Detect Focus Change for UITextField

I'm trying to set the animation for the view to move up when keyboard is hiding and appearing for the text fields and I got it to work perfectly fine, but when the focus moves from one text field to ...
Dennis's user avatar
  • 3,536
44 votes
5 answers
71k views

dismissViewControllerAnimated is called but ViewController is not dismissed

I am having a problems with the dismissViewControllerAnimated method not closing down the view. What is happening in the app here is: Cell in ItemViewController is selected. View is pushed to ...
Ad Taylor's user avatar
  • 2,775
42 votes
4 answers
12k views

What are the advantages and disadvantages of using ARC? [closed]

What are the advantages and disadvantages of using the new automatic reference counting (ARC) memory management style in an iOS project? Can you choose not to use ARC when developing with the iOS 5.0 ...
user avatar
40 votes
14 answers
57k views

How to get the user's country calling code in iOS?

I am developing an iOS app in which the user enters their mobile number. How do I get their country calling code? For example, if a user is in India, then +91 should be prefixed automatically. Is ...
user2681789's user avatar
39 votes
3 answers
30k views

To stop segue and show alert

Using iOS 5 storyboards, on a button I am performing a segue, what I want is to do validation on my textfield and if validation is failed I have to stop segue and throw an alert. Whats the way to do ...
Firdous's user avatar
  • 4,642
38 votes
5 answers
13k views

Crash when adding persistent store (iCloud enabled) in app delegate

I am going to start updating this to help those seeking to use this as reference for their own personal code. Newest update I'm fairly sure I have found a way to resync devices back together once ...
justin's user avatar
  • 5,821
37 votes
2 answers
19k views

UISegmentedControl change event not firing in iOS5

I have a UISegmentedControl whose "Value changed" event is wired up in Interface Builder to call my controller's -(IBAction)segmentChangeAction:(id)sender; When the user taps on the control to change ...
Clafou's user avatar
  • 15.3k
36 votes
12 answers
48k views

Unable to add a source with url

[!] Unable to add a source with url [email protected]:CocoaPods/Specs.git named master-1. You can try adding it manually in ~/.cocoapods/repos or via pod repo add. please any help
rajesh's user avatar
  • 391
36 votes
2 answers
17k views

Core Data's NSPrivateQueueConcurrencyType and sharing objects between threads

iOS 5 introduced a new way to quickly fetch data on a background thread by initializing the MOC using NSPrivateQueueConcurrencyType and then doing the fetch in performBlock: One of the rules of thumb ...
samvermette's user avatar
  • 40.4k
36 votes
11 answers
20k views

iOS5 show numeric keypad by default without using type="number" or type="tel"

With the release of iOS5, Apple has added their own validation to input type="number" form fields. This is causing some issues; see this question below which sums it up: Input type='number' ...
marissajmc's user avatar
  • 2,603
36 votes
6 answers
7k views

NSFetchedResultsController and NSOrderedSet relationships

I am having an issue (understanding issue to be honest) with NSFetchedResultsController and the new NSOrderedSet relationships available in iOS 5. I have the following data-model (ok, my real one is ...
Damien's user avatar
  • 2,421
34 votes
7 answers
39k views

Apple touch icon isn't showing up on the home screen

I'm using the following code to get touch icons for mobile devices - it's based on the html5boilerplate/mobile example: <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <...
gpr's user avatar
  • 959
33 votes
6 answers
38k views

Modal view controller won't dismiss itself

What I'm doing: In my app, I'm presenting a modal view controller (containing app settings) using the following code: optionsViewController.modalTransitionStyle = ...
Jordan Smith's user avatar
  • 10.4k
33 votes
5 answers
10k views

Can you pass WiFi settings from an iOS device to an ExternalAccessory object?

I've heard that iOS 5 introduced a feature in which the iOS device can share its wifi configuration with a docked accessory via the ExternalAccessory framework. The trouble is that I can't find any ...
njt's user avatar
  • 521
31 votes
5 answers
35k views

How to write exif metadata to an image (not the camera roll, just a UIImage or JPEG)

I am aware of how to save metadata using ALAssets. But, I want to save an image, or upload it somewhere, with exif intact. I have exif data as an NSDictionary. But how can I inject it properly into a ...
akaru's user avatar
  • 6,299
31 votes
5 answers
5k views

GLKView set drawable properties

I'm trying to port Apples GLPaint example to use GLKit. Using a UIView, its possible to return the CAEAGLLayer of the view and set the drawableProperties to include ...
Brett's user avatar
  • 2,635
29 votes
5 answers
18k views

How can I init a text field in a UIAlertView

The updated UIAlertView now has a style which allows a Text input field in UIAlertView i.e. alert.alertViewStyle = UIAlertViewStylePlainTextInput; This works well but I wanted to init the input text ...
timeview's user avatar
  • 291
29 votes
7 answers
10k views

iOS: different addSubview behavior between iOS 4.3 and 5.0

while coding in iOS 4.3 before, I found while add a view controller's view to another view with [superview addSubView:controller.view], the controller instance will not receive the -viewWillAppear/...
KrzyCube's user avatar
  • 303
28 votes
6 answers
45k views

Detect when home button is pressed iOS

I have several iOS apps that all use the same port to listen for a network beacon. On the main view I use viewWillDisappear to close the port when another view is opened, which was working great. ...
nick's user avatar
  • 2,833
28 votes
4 answers
8k views

Trying to "follow" someone on Twitter using new iOS 5 API, getting 406 return error. Why?

Trying to "follow" someone on Twitter using new iOS 5 API, getting 406 return error. Why? Is my code correct? Need to find out why this isn't working.... - (void)followOnTwitter:(id)sender { ...
Ethan Allen's user avatar
  • 14.6k
28 votes
2 answers
13k views

ARC, Blocks and Retain Cycles

Working on an iOS project that targets 4.0 and 5.0, using ARC. Running into an issue related to blocks, ARC and referencing an object from outside the block. Here's some code: __block ...
Hunter's user avatar
  • 4,353
27 votes
4 answers
13k views

How to test printing from iPhone App if we do not have AirPrint enabled Printers?

Is there a way to test whether correct pages are being passed for printing from iPhone App if we do not have AirPrint enabled printers? Please let me know.
meetpd's user avatar
  • 9,219
27 votes
9 answers
35k views

UITextField - Rounded corner issue

I bring the issue forward which I face. I am creating a UITextField programmatically as below. UItextField *mobileNumberField = [[UITextField alloc] initWithFrame:CGRectMake(10, 195, 300, 41)]; ...
iOS's user avatar
  • 3,596

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