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2014/10/15 ¤U¤È 10:12:21
iphone Programming Glossary: oneHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch.. Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems.. way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present to make a UITextField move up when keyboard is present With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling.. still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView Does one go inside the other EDIT I now know that you want a UIView inside of a UIScrollView and the trick is.. in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve this question Update for iOS 7 Apple docs for UIActionSheet UIActionSheet.. view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse it between 5 or 6 different..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary.. not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps to analyze crash report from apple Copy..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString.. use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different.. to use a specific language to have the app in a different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method.. 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this.. so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this question The simplest way is to set the frame of your UIImageView..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question.. do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom.. question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document Support' which goes a step further and allows apps..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic programmer.. Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core.. transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning Java in college days. So when I define a property in Objective C this is what I.. In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString.. _myStringProperty Should I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application I embed a custom font in an iPhone application I would like to have an app include a custom font for rendering text load it and then use.. the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for.. with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I will award the bounty to the first person..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints and Lean PDF Viewer for iPhone iPad iOs tips and hints There has been many Questions recently about drawing PDF's. Yes you can render.. starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter how small or obvious to improve the performance memory handling of Drawing.. init frequently used arrays with placeholder objects alternitively another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any ideas how we might handle this problem going forward The suggestion from the documentation.. class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls.. created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert urlRequest returningResponse nil error error Except it gives an error if the cert is a self signed one Error Domain NSURLErrorDomain Code 1202 UserInfo 0xd29930 untrusted server certificate . Is there a.. to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve this question There is a supported API for accomplishing this Add something..
How do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder the audio types documentation otherwise you will never be able to initialize it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily...
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like but Mobile Safari will give an error in case the app is not installed. What would be a workaround One idea 1 Use http URLs that open in any desktop browser and render the service through the browser 2 Check..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc to what has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also..
http://stackoverflow.com/questions/1424608/nsurlconnection-timeout share improve this question You can specify a timeout in your NSURLRequest object. One way to do this is to construct it via the requestWithURL cachePolicy timeoutInterval method. You can..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application for iPhone if I disable NSLog will it perform better iphone nslog share improve this question One way to do it is to go into your Build settings and under the Debug configuration add a value to Preprocessor..
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone e.g. REST based API . Gero iphone ios web services soap wsdl share improve this question One word Don't. OK obviously that isn't a real answer. But still SOAP should be avoided at all costs. Is..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew into parallelograms which your transform does not. For your transform it can be done in two steps. One to convert the square into a trapezoid. p1 p2 p1 p2 p3 p4 p3 p4' Another to the vertical direction...
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone on the iPhone There are a couple of different ways to remove HTML tags from an NSString in Cocoa. One way is to render the string into an NSAttributedString and then grab the rendered text. Another way.. documents for me to feel comfortable using regex or NSScanner. Does anyone have a solution to this One suggestion has been to simply look for opening and closing tag characters this method won't work except..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application reside in the Mac developer center because this capability has been ported across from the Mac. One of the UTIs used in the above example was system defined but the other was an application specific UTI...
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key linked with the File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk in the Xcode 3.2.4 upgrade which has a strongly related problem you might want to confer here . One SDK to rule them all Here's the deal 4.0 is now the only SDK version allowed for submitting new or updated..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content CGRect frame _textView.frame frame.size.height _textView.contentSize.height _textView.frame frame One thing to note is that the correct contentSize is only available after the UITextView has been added..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers dev in general I have a strong desire to get the most out of the language and the frameworks. One of the resources I'm using is Stanford's CS193P class notes that they have left on the web. It includes..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour the CADisplayLink from firing until the user has finished scrolling which looks horrible . One temporary fix has been to use NSRunLoopCommonModes instead of the default run mode but unfortunately.. to throw off the timing of a UIScrollView when using NSRunLoopCommonModes for the CADisplayLink. One way around this is to perform your OpenGL ES rendering actions on a background thread by using a Grand..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown could end up with a garbage pointer value being retained released and crash. Additional Arguments One consideration is that this is the same warning will occur with performSelector withObject and you could..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone or custom backgrounds iphone cocoa touch cocoa charts core plot share improve this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL.. to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down.. the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites if Google didn't respond it does seem wasteful..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present to make a UITextField move up when keyboard is present With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling of the contents of the UIScrollView to see the other text.. changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView Does one go inside the other EDIT I now know that you want a UIView inside of a UIScrollView and the trick is to programatically set the content size of the UIScrollView.. frame size of the UIView . Then what needs to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView that I'm working with is brought..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how Button on UIToolbar UIPicker Control I have included an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve this question Update for iOS 7 Apple docs for UIActionSheet UIActionSheet is not designed to be subclassed nor should you add views.. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse it between 5 or 6 different screens where I all users to select from a list of options...
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the App Store and I have the dSYM file.. outputs the same text that is in the crash report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps to analyze crash report from apple Copy the release .app file which was pushed to the appstore the..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different.. to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different language than the device iphone objective c cocoa localization.. the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString and variants thereof access the AppleLanguages key in NSUserDefaults..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize.. image _imageScaledToSize CGSizeMake 290 390 interpolationQuality 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this question The simplest way is to set the frame of your UIImageView.. 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this question The simplest way is to set the frame of your UIImageView and set the contentMode to one of the resizing options...
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL.. do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then.. associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document Support' which goes a step further and allows apps to associate with file types. There is a lot of talk in the..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview do I apply a perspective transform to a UIView I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic programmer Core Animation podcasts but I'm still no clearer on.. CALayer and have run through all the pragmatic programmer Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll.. but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c in front of a variable in a cocoa objective c class work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning Java in college days. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty.. myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty.. myStringProperty In the implementation @synthesize myStringProperty _myStringProperty Should I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application I embed a custom font in an iPhone application I would like to have an app include a custom font for rendering text load it and then use it with standard UIKit elements like UILabel. Is this possible.. have been a number of replies so far which tell me to read the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I will award the bounty to the first person.. the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I will award the bounty to the first person who provides an answer using only documented APIs who responds..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints and Lean PDF Viewer for iPhone iPad iOs tips and hints There has been many Questions recently about drawing PDF's. Yes you can render PDF's very easily with a UIWebView but this cant give the.. so that the PDF image is ready to mask the layer before it starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter how small or obvious to improve the performance memory handling of Drawing PDF's or any other issues discussed here EDIT Some Tips Credit.. you can. Use larger tileSizes if rendering on TiledLayers init frequently used arrays with placeholder objects alternitively another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any ideas how we might handle this problem going forward The suggestion from the documentation is... Special Considerations Do not use the uniqueIdentifier.. and write it to the defaults database using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time... app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls and re installs the app. This requires a bit of effort..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert requestWithURL url NSURLConnection sendSynchronousRequest urlRequest returningResponse nil error error Except it gives an error if the cert is a self signed one Error Domain NSURLErrorDomain Code 1202 UserInfo 0xd29930 untrusted server certificate . Is there a way to set it to accept connections anyway just like in a browser.. untrusted server certificate . Is there a way to set it to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve this question There is a supported API for accomplishing this Add something like this to your NSURLConnection delegate BOOL connection..
How do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder understand how to set the AVAudioRecorder settings read carefully the audio types documentation otherwise you will never be able to initialize it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily. Finally note that the AVAudioRecorder method deleteRecording..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like protocol suffix for this and register it in the Info.plist but Mobile Safari will give an error in case the app is not installed. What would be a workaround One idea 1 Use http URLs that open in any desktop browser and render the service through the browser 2 Check the User Agent and in case it's Mobile Safari open a myprotocol..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc memory management share improve this question In addition to what has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various subviews in the view hierarchy...
http://stackoverflow.com/questions/1424608/nsurlconnection-timeout ideas on how to timeout the connection iphone timeout nsurlconnection share improve this question You can specify a timeout in your NSURLRequest object. One way to do this is to construct it via the requestWithURL cachePolicy timeoutInterval method. You can pass in the default NSURLRequestUseProtocolCachePolicy cachePolicy..
Do I need to disable NSLog before release Application? http://stackoverflow.com/questions/2025471/do-i-need-to-disable-nslog-before-release-application NSLog before release Application When releasing an app for iPhone if I disable NSLog will it perform better iphone nslog share improve this question One way to do it is to go into your Build settings and under the Debug configuration add a value to Preprocessor Macros value like DEBUG_MODE 1 Make sure you only do..
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone not an option to switch to another type of interface e.g. REST based API . Gero iphone ios web services soap wsdl share improve this question One word Don't. OK obviously that isn't a real answer. But still SOAP should be avoided at all costs. Is it possible to add a proxy server between the iPhone and the..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew rotations shearing and scaling. They all map parallelograms into parallelograms which your transform does not. For your transform it can be done in two steps. One to convert the square into a trapezoid. p1 p2 p1 p2 p3 p4 p3 p4' Another to the vertical direction. A naive transformation rule is y c x' x p1.x ”——————â€..
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone HTML Tags from an NSString on the iPhone There are a couple of different ways to remove HTML tags from an NSString in Cocoa. One way is to render the string into an NSAttributedString and then grab the rendered text. Another way is to use NSXMLDocument's objectByApplyingXSLTString method.. There are too many edge cases and malformed HTML documents for me to feel comfortable using regex or NSScanner. Does anyone have a solution to this One suggestion has been to simply look for opening and closing tag characters this method won't work except for very trivial cases. For example these cases from the..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application in Apple's Uniform Type Identifiers Overview . Those guides reside in the Mac developer center because this capability has been ported across from the Mac. One of the UTIs used in the above example was system defined but the other was an application specific UTI. The application specific UTI will need to be exported so..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key @synthesize string In my SecondView.xib the UILabel is linked with the File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get the same error. Is there a global parameter that can generate..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk take on this issue. If you are specifically interested in the Xcode 3.2.4 upgrade which has a strongly related problem you might want to confer here . One SDK to rule them all Here's the deal 4.0 is now the only SDK version allowed for submitting new or updated iPhone only apps. This is direct from Apple's iOS 4 Readiness..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content content. It can be done using the UITextView contentSize . CGRect frame _textView.frame frame.size.height _textView.contentSize.height _textView.frame frame One thing to note is that the correct contentSize is only available after the UITextView has been added to the view with addSubview . Prior to that it is equal to frame.size..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers view controllers Being new to objective c cocoa and iPhone dev in general I have a strong desire to get the most out of the language and the frameworks. One of the resources I'm using is Stanford's CS193P class notes that they have left on the web. It includes lecture notes assignments and sample code and since the..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour but there's a problem moving around on the scroll view prevents the CADisplayLink from firing until the user has finished scrolling which looks horrible . One temporary fix has been to use NSRunLoopCommonModes instead of the default run mode but unfortunately this breaks some aspects of scroll view behaviour on certain.. ES rendering might be taking long enough for each frame to throw off the timing of a UIScrollView when using NSRunLoopCommonModes for the CADisplayLink. One way around this is to perform your OpenGL ES rendering actions on a background thread by using a Grand Central Dispatch serial queue. I did this in my recent update..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c Instead of checking whether a delegate responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something id something didFinishLoadingItem id item..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now This requires a bit of effort since the most reliable per device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the interface has no IP is down...
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown someMethod is returning a non object including void you could end up with a garbage pointer value being retained released and crash. Additional Arguments One consideration is that this is the same warning will occur with performSelector withObject and you could run into similar problems with not declaring how that method..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone on the y axis Labels above each bar on the chart Shaded or custom backgrounds iphone cocoa touch cocoa charts core plot share improve this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk to check for an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came.. an active Internet Connection on iPhone SDK I would like to check to see if I have an Internet connection on the iPhone using the Cocoa Touch libraries. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable.. I came up with a way to do this using an NSURL . The way I did it seems a bit unreliable because even Google could one day be down and relying on a 3rd party seems bad and while I could check to see for a response from some other websites..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present to make a UITextField move up when keyboard is present With the iPhone SDK I have a UIView with UITextFields that brings up a keyboard. I need it to be able to Allow scrolling of the contents.. UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView Does one go inside the other EDIT I now know that you want a UIView inside of a UIScrollView and the trick is to programatically.. to be implemented in order to automatically scroll to the active text field Ideally as much of the setup of the components as possible will be done in Interface Builder. I'd like to only write code for what needs it. Note the UIView or UIScrollView..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how I have included an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve this question Update for iOS 7 Apple docs for UIActionSheet UIActionSheet is not designed.. sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse it between 5 or 6 different screens where..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from.. iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to.. report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated thanks. iphone crash reports symbolicate share improve this question Steps to analyze crash report from apple Copy the release .app..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific.. NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different language than the device.. to force NSLocalizedString to use a specific language to have the app in a different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString and variants thereof..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize the image.. 290 390 interpolationQuality 1 It works perfectly but it's an undocumented function so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this question The simplest.. function so I can't use it anymore with iPhone OS4. So... what is the simplest way to resize an UIImage iphone resize uiimage share improve this question The simplest way is to set the frame of your UIImageView and set the contentMode..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that.. do I associate file types with an iPhone application On the subject of associating your iPhone app with file types. In this informative question I learned that apps could be associated with custom URL protocols. That.. types. In this informative question I learned that apps could be associated with custom URL protocols. That was almost one year ago and since then Apple introduced 'Document Support' which goes a step further and allows apps to associate with..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview transform to a UIView I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic programmer Core Animation.. pragmatic programmer Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve.. create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c objective c class work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning Java in college days. So when I define a property in Objective C this is what I naturally do. In the.. copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like In the header @interface Whatever NSString _myStringProperty @property nonatomic copy NSString myStringProperty In.. @synthesize myStringProperty _myStringProperty Should I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application I embed a custom font in an iPhone application I would like to have an app include a custom font for rendering text load it and then use it with standard.. which tell me to read the documentation on X or Y. I've experimented extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I.. extensively with all of these and got nowhere. In one case X turned out to be relevant only on OS X not on iPhone. Consequently I am setting a bounty for this question and I will award the bounty to the first person who provides an answer..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints and Lean PDF Viewer for iPhone iPad iOs tips and hints There has been many Questions recently about drawing PDF's. Yes you can render PDF's very easily.. the layer before it starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter how small or obvious to improve the performance memory handling of Drawing PDF's or any other.. on TiledLayers init frequently used arrays with placeholder objects alternitively another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any ideas how we might handle this problem going forward The suggestion from the documentation is... Special Considerations.. using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the.. question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want it to be not unique i. e. it should stay the same when the user uninstalls and re installs..
How to use NSURLConnection to connect with SSL for an untrusted cert? http://stackoverflow.com/questions/933331/how-to-use-nsurlconnection-to-connect-with-ssl-for-an-untrusted-cert urlRequest returningResponse nil error error Except it gives an error if the cert is a self signed one Error Domain NSURLErrorDomain Code 1202 UserInfo 0xd29930 untrusted server certificate . Is there a way to set it to accept.. a way to set it to accept connections anyway just like in a browser you can press accept or a way to bypass it iphone ssl https share improve this question There is a supported API for accomplishing this Add something like this to your..
How do I record audio on iPhone with AVAudioRecorder? http://stackoverflow.com/questions/1010343/how-do-i-record-audio-on-iphone-with-avaudiorecorder settings read carefully the audio types documentation otherwise you will never be able to initialize it correctly. One more thing. In the code I am not showing how to handle metering data but you can figure it out easily. Finally note that..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like it in the Info.plist but Mobile Safari will give an error in case the app is not installed. What would be a workaround One idea 1 Use http URLs that open in any desktop browser and render the service through the browser 2 Check the User Agent..
When should I release objects in -(void)viewDidUnload rather than in -dealloc? http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc In addition to what has already been indicated I wanted to elaborate more about logic behind viewDidUnload . One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references..
http://stackoverflow.com/questions/1424608/nsurlconnection-timeout iphone timeout nsurlconnection share improve this question You can specify a timeout in your NSURLRequest object. One way to do this is to construct it via the requestWithURL cachePolicy timeoutInterval method. You can pass in the default..
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone type of interface e.g. REST based API . Gero iphone ios web services soap wsdl share improve this question One word Don't. OK obviously that isn't a real answer. But still SOAP should be avoided at all costs. Is it possible to add..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew map parallelograms into parallelograms which your transform does not. For your transform it can be done in two steps. One to convert the square into a trapezoid. p1 p2 p1 p2 p3 p4 p3 p4' Another to the vertical direction. A naive transformation..
Remove HTML Tags from an NSString on the iPhone http://stackoverflow.com/questions/277055/remove-html-tags-from-an-nsstring-on-the-iphone from an NSString on the iPhone There are a couple of different ways to remove HTML tags from an NSString in Cocoa. One way is to render the string into an NSAttributedString and then grab the rendered text. Another way is to use NSXMLDocument's.. and malformed HTML documents for me to feel comfortable using regex or NSScanner. Does anyone have a solution to this One suggestion has been to simply look for opening and closing tag characters this method won't work except for very trivial..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application . Those guides reside in the Mac developer center because this capability has been ported across from the Mac. One of the UTIs used in the above example was system defined but the other was an application specific UTI. The application..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key the UILabel is linked with the File's Owner. the class of the File's Owner is SecondView . So what is wrong here One more thing every time I create a new application and try to link a UISomething to an IBOutlet I get the same error. Is there..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk interested in the Xcode 3.2.4 upgrade which has a strongly related problem you might want to confer here . One SDK to rule them all Here's the deal 4.0 is now the only SDK version allowed for submitting new or updated iPhone only apps...
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content contentSize . CGRect frame _textView.frame frame.size.height _textView.contentSize.height _textView.frame frame One thing to note is that the correct contentSize is only available after the UITextView has been added to the view with addSubview..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers c cocoa and iPhone dev in general I have a strong desire to get the most out of the language and the frameworks. One of the resources I'm using is Stanford's CS193P class notes that they have left on the web. It includes lecture notes assignments..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour on the scroll view prevents the CADisplayLink from firing until the user has finished scrolling which looks horrible . One temporary fix has been to use NSRunLoopCommonModes instead of the default run mode but unfortunately this breaks some aspects.. enough for each frame to throw off the timing of a UIScrollView when using NSRunLoopCommonModes for the CADisplayLink. One way around this is to perform your OpenGL ES rendering actions on a background thread by using a Grand Central Dispatch..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c responds to a selector every time we want to message it you can cache that information when delegates are set. One very clean way to do this is to use a bitfield as follows @protocol SomethingDelegate NSObject @optional void something..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now most reliable per device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown including void you could end up with a garbage pointer value being retained released and crash. Additional Arguments One consideration is that this is the same warning will occur with performSelector withObject and you could run into similar..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone on the chart Shaded or custom backgrounds iphone cocoa touch cocoa charts core plot share improve this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot..
How to post more parameters with image upload code in iOS? http://stackoverflow.com/questions/10618056/how-to-post-more-parameters-with-image-upload-code-in-ios #import AFHTTPRequestOperation.h #import SBJson.h NSString const APIKey @ APIKEY GOES HERE IF YOU WANT TO USE ONE @implementation NetworkClient void processURLRequestWithURL NSString url andParams NSDictionary params block void ^ id..
Optimizing CLLocationManager/CoreLocation to retrieve data points faster on the iPhone http://stackoverflow.com/questions/1081219/optimizing-cllocationmanager-corelocation-to-retrieve-data-points-faster-on-the different Apps and trial and error this is what I've figured out 1 Use a singleton class for the locationManager ONLY ONE Instance follow the examples in Apple's LocateMe example Tweetero http tweetero.googlecode.com svn trunk I'm thinking you..
Cross compiling FreeTDS to iPhone http://stackoverflow.com/questions/11424846/cross-compiling-freetds-to-iphone resulted from unzipping the freetds download mine was freetds_0.91 4 Run one of your scripts. You can only compile for ONE architecture at a time sh build_for_ desiered build this runs . configure for you with the correct options tds version 7..
ios-Facebook SDK 3.0 Error 5 When Posting Status Update http://stackoverflow.com/questions/11850899/ios-facebook-sdk-3-0-error-5-when-posting-status-update nil alertView show The odd thing is this code works ONCE. After authenticating the user for the first time I can post ONE status update successfully. After that all subsequent attempts will fail with a FBiOSSDK error 5 in the console Error HTTP..
http://stackoverflow.com/questions/1237649/json-or-soap-xml webservice or whatever and the iPhone app. I'm free to identify the best way to do that this is the application number ONE so it will become the standard for the future . So what do you suggest me Use SOAP web services XML parsing etc.. or user..
xcode - How do I keep views locked into portrait mode, but still allow one view to rotate? http://stackoverflow.com/questions/15110838/xcode-how-do-i-keep-views-locked-into-portrait-mode-but-still-allow-one-view locked into portrait mode but still allow one view to rotate I'm having a problem with device rotation. Except for ONE view where I show a company splash screen I want to lock all the remaining app views into Portrait display. In the project..
http://stackoverflow.com/questions/1540012/uiview-viewwithtag-0-problem . ONLY one item has tag 0 yet following line works for ANY UITextBox other then the one with tag 0. Note that only ONE UITextBox has tag 0 why UITextField self.view viewWithTag 0 .text @ foo Interesting that when triggered event received for..
Pop-up modal with UITableView on iPhone http://stackoverflow.com/questions/2504478/pop-up-modal-with-uitableview-on-iphone to think this dialog wants to be another full blown UIViewController ... But from all I've read you should only have ONE UIViewController per screen so this confuses me because I could benefit from viewDidLoad etc. that come along with view..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework numbers. These represent n 2 frequency bins bin 1 .idealFreq 44Hz ie The lowest frequency we can reliably detect is ONE complete wave within that window ie a 44Hz wave. bin 2 .idealFreq 2 44Hz etc. bin 512 .idealFreq 512 44Hz The highest frequency..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 SDK_VERSION fi echo XCode has selected SDK PLATFORM_NAME with version SDK_VERSION although back targetting IPHONEOS_DEPLOYMENT_TARGET echo ...therefore OTHER_SDK_TO_BUILD OTHER_SDK_TO_BUILD # ##################### end of part 1 ##################.. # # IF this is the original invocation invoke WHATEVER other builds are required # # Xcode is already building ONE target... # # ...but this is a LIBRARY so Apple is wrong to set it to build just one. # ...we need to build ALL targets.. project PNG PLIST XML etc Do everything above check it works Create a new Run Script phase that comes AFTER THE FIRST ONE copy paste the code below Create a new Target in Xcode of type bundle In your MAIN PROJECT in Build Phases add the new bundle..
Returning data from data-grabbing class from web? http://stackoverflow.com/questions/3883747/returning-data-from-data-grabbing-class-from-web they call back to your UIViewController in the protocol laid out above so that you can update the UI. If it's ONE request you could theoretically get rid of DataGrabber and put it inside your view controller but I like to separate my..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode An important reminder of the ADDITIONAL well known problem at hand here if you are trying to swap between MORE THAN ONE view all landscape IT SIMPLY DOES NOT WORK . It is essential to remember this or you will waste days on the problem. It..
If you have an IBOutlet, but not a property, is it retained or not? http://stackoverflow.com/questions/5523290/if-you-have-an-iboutlet-but-not-a-property-is-it-retained-or-not each outlet. That method similarly looks for an appropriate accessor method and SO WHAT HAPPENS IF THERE ISN'T ONE TELL US APPLE... falls back on other means when that fails... GOOD GRIEF And check out this documentation http developer.apple.com..
iPhone DropBox API: How to load a file? http://stackoverflow.com/questions/5685442/iphone-dropbox-api-how-to-load-a-file I would like to use it to simply load a file from the dropBox and save it again. Consider that you only want to sync ONE FILE for the sake of simplicity called 'example.txt' which is located in the 'Example' folder in my DropBox. The same 'example.txt'..
How do I add a scrollable/zoomable image into the MainView.xib of a Utility Based iPhone Application http://stackoverflow.com/questions/8275234/how-do-i-add-a-scrollable-zoomable-image-into-the-mainview-xib-of-a-utility-base a full tutorial I'm bored let's do this . Open up Xcode and start a new Utilities based project DO NOT TRASH THE OLD ONE and name it 'PinchZoomingImages' without the quotes . Make sure ARC is turned OFF I like to code the old fashioned way ...
http://stackoverflow.com/questions/948683/uibutton-events if i 0 NSString name NSString alloc initWithString@ ZERO else if i 1 NSString name NSString alloc initWithString@ ONE else if i 2 NSString name NSString alloc initWithString@ Two else NSString name NSString alloc initWithString@ Three aa.. 3 UIButtons dynamically. When I press the first button I want to display ZERO . When pressing the second one print ONE ... then Two then Three . How can I do this I know it can be done using selector key work but I don't know how. iphone..
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