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• Is single float assignment an atomic operation on the iPhone?

  - by iter

  I assume that on a 32-bit device like the iPhone, assigning a short float is an atomic, thread-safe operation. I want to make sure it is. I have a C function that I want to call from an Objective-C thread, and I don't want to acquire a lock before calling it: void setFloatValue(float value) { globalFloat = value; }

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• iPhone, is there any drawing sketch framework library can be use ?

  - by Robin

  hi all, I want build a sketch pad app on iPhone, I assume that this type app has already been developed long time , maybe some open source code can be use for this purpose ? anyone can give tip on this field ? Thanks ...

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• how to get the popup keyboard to move along with the orientation of the iphone device.

  - by ida

  hi im new i have a UITextView field on a view and when i orientate the iphone to the right side the keyboard doestn move it stays horizontal. how do i make it move along?

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• What is the best approach for writing unit tests for iPhone / iPad ?

  - by Madhup

  I am developing an iPad application. I'm not sure if I should write unit tests for this application, and if so, how I should go about writing them. What would you suggest as the best approach to writing unit tests for iPhone / iPad?

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• How to create sleek customized buttons, tables and other views for iPhone/iPad apps?

  - by wgpubs

  I'm looking to know both what can be customized as well as the recommended way to customize some of the major UIView subclasses in the iPhone SDK (in particular UIButton, UITableView/Cell ... but really open to any of the views in the SDK). Any recommended tutorials? Examples? Are there bad practices that can actually hinder performance and/or destablize your app in any way that should be avoided? Thanks

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• iphone orientation to the left rotates the background as the device rotates how to stop it?

  - by ida

  ive set the shouldAutorotateToInterfaceOrientation to return to YES for orientation then i noticed as the iphone rotates the background rotates as well which is a UIImageView. how do i have the background fixed so it doesnt rotate?

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• Any ideas on How to get the Google Finance Data from iPhone?

  - by Tattat

  The Google Finance API only have Java / Javascript. Is there any ideas on getting Google Finance data from iPhone using Objective C? thz u.

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• iphone,cocoa, how do you think on KVC and KVO in cocoa ?

  - by Robin

  if your app use this solution , do do you plan port the app to other platform ? for example, iPhone app -- Android or Backberry. I do not want user it , but some code is exist ...

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• Can resources be extracted from a compiled iPhone app? If yes, how can they be secured?

  - by Charles S.

  Can resources be extracted from a compiled iPhone app that is released to the iTunes store? I'm particularly interested in the security of XML files... if I have copyrighted data in an XML document in my resource directory, how likely is it for someone to extract that information and paste it around the internet? If it's as easy as using a resource editor, how can that data be secured?

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• How can I detect if an iPhone is rotating while being face up in a table?

  - by OscarMk

  Hello, Is there a way to detect if an iphone lying down in a table face up is rotating?. I do realize that this kind of movement is not reported by the accelerometer and neither is it reported to the - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation method. Is there a way to detect angle variations for the phone rotating this way?. Thank you.

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• How to get the IPhone to include location information in web request?

  - by sam ozluk

  We have a web site that sends emails with http links on that email. As the recipient clicks on the link, they are directed to our web site. How can we get the IPhone to include the latitude and longitude of the device?

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• How to compile simple C file using GNU C Compiler/gcc & Mobile-Terminal on the iPhone?!

  - by Youssef Gamil

  How to compile simple C file using GNU C Compiler/gcc & Mobile-Terminal on the iPhone?! Do I need extra files?

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• Canadian English on Apple products

  - by thepurplepixel

  Apple is an American company. As many of you probably know, Canadian English is different from American English, and closer to British English (e.g. colour instead of color). I use iWork and Microsoft Office for Mac (along with many other applications on OS X), and OS X, nor my iPhone, have an option to switch to Canadian English. Yes, you can select Canadian English as an input language in the language bar, but any program that uses the central OS X spell checking (from Mail to Office to iWork to Chrome) will check words against an American English dictionary. I know asking a question that involves an iPhone component is borderline off-topic, but I know on my iPhone I can select British English, but that turns my $ into £ and has a few other weird spelling quirks. Simple question: Is it possible to make OS X (and maybe the iPhone) use a Canadian English dictionary for its spell checking? Because British English just doesn't cut it anymore. Thanks!

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• Is it OK , from a product perspective, to write an iPhone app completely in WebView?

  - by alex

  This just saves time. Since I already have a web applciation. I can just stick it inside a webview. The question is: Does it turn off many users? How many users will be disgusted that the entire iPhone app is written in WebView?

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• What can I do with an Transformable attribute type in Core Data on the iPhone?

  - by dontWatchMyProfile

  What can I do with an Transformable attribute type in Core Data on the iPhone? Sounds cool. What is it good for? Are there good examples?

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• enabling guard malloc for Iphone device or for store kit api?

  - by Nareshkumar

  I am using store kit api for an application on iphone. I would like to know if it is possible to enable Malloc Guard while running on the device and see if there are any memory leaks. Could someone let me know if it is possible?

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• How to pass a link to Facebook iPhone app status update?

  - by Jonatan

  It's possible to create href-attibutes that makes the iPhone quit Safari and launch another app. For the official Twitter-app this would look like: <a href="twitter:///post?message=my+important+message">Click to deliver message to Twitter-apps status updater</a> For the Facebook-app the protocoll is: fb:/// But i can't figure out, or find any information about, how to get my message (a url to share) directly into the the status updater. Is there a url-scheme, or am I going about this the wrong way?

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• mixing OpenGL and Interface Builder/ UI Controls - bad idea? Why? (iPhone)

  - by Adam

  I've heard that OpenGL ES and standard iPhone UI controls don't play well together, but I'm wondering if anyone knows why, and what the effects are? I'm writing an OpenGL based game, and the view is loaded from a nib file with ui controls, and it seems to work ok, but the game is really simple at this point... does using ui controls cause some kind of performance hit?

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• How can i find out if an external headset is connected to an iPhone?

  - by iter

  I wonder if it's possible to detect that the user has an external headset plugged into the iPhone's 3.5mm connector or the 30-pin connector. I want to output audio only to an external audio device, and keep silent if nothing is connected. Ari.

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• How to use NSNotificationCenter in delegate and respond to the notifation in my view in iphone?

  - by Warrior

  I am new to iphone development.I am parsing a url in my delegate class, i want to send a notification once the parsing is completed to my view "testviewcontroller".With reference to the notifation i want to perform some action in my view. I want to know ,how to set the notification in delegate with referring to the selector method in my "testviewcontroller" class.Please help me out.Thanks.

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• How to play an audio file ONLY while user is shaking iPhone?

  - by wgpubs

  I've read a number of posts regarding how to detect shakes but I'm not sure: What is currently the best way to detect shakes? and - How to play an audio file ONLY while the user is shaking the iPhone? Anyone have an advice, examples/tutorials or sample code? Thanks

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• iphone dylibs and frameworks are already in the device?

  - by Scott Pendleton

  Are dylibs and frameworks already in an iPhone, or does my app actually incorporate them? Also, in Xcode I see dylibs with identical names. Sometimes the subsequent names are incremented, as in libz.dylib, libz.1.dylib, libz.1.1.3.dylib, and libz.1.2.3.dylib. If I have to include libz, should I use the one with the highest rev number, assuming that that's what that is?

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• iPhone OS SDK: Possible to download SDK 3.0 w/o Xcode?

  - by Cirrostratus

  I recently downloaded the iPhone SDK 4 along with Xcode and neglected to install 3.0 and 3.1. I've since deleted the install package. I of course can re-download the whole package, but for future reference, I wonder if you are able to download individual SDK versions separately and independent of Xcode, like you would with almost any open source package.

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• iPhone: How to Trigger the Loading of a View Using a UI Element in a Previous View

  - by Kevin Horvath

  I've been reading the Head First iPhone Development book and I understand how to get to a new view from a table but how exactly would I be able to get to a new view or view controller, by just simply pressing a button? Is that even possible? I mean there are some apps where you click a button, not a table cell and it loads a new view. How exactly is that done? If someone could help out a newbie it would be greatly appreciated!

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• Is there a standard way to display the play controls that the iPhone iPod app uses?

  - by alex

  I'm working on a music streaming app that needs play controls (skip, pause, play) just like the iPhone iPod app. I built my controls using a UIToolbar and the standard buttons. My UIToolbar controls look OK, but they're smaller than the ones that the iPod uses. Does anyone know if the iPod controls are custom graphics? Or maybe custom buttons in a UIToolbar (to get the gradient)?

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