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2014/10/15 ¤U¤È 10:13:09
iphone Programming Glossary: reasonHTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch the character with the value of 38 in the ISO 8859 1 character encoding scheme which is . The reason the ampersand has to be encoded in RSS is it's a reserved special character. What you need to do is..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable.. and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same as the property used to..
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 this question I downloaded your project. The error you are getting is 'NSUnknownKeyException' reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for..
http://stackoverflow.com/questions/3097244/exit-application-in-ios-4-0 where you left off so this is either by resuming or by starting and loading the old state. No reason for exit. Edit As this keeps popping up again iOS Human Interface Guidelines says Don't Quit Programmatically..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version NSNumericSearch NSOrderedAscending displayLinkSupported TRUE Important Note If for whatever reason you decide that systemVersion is what you want make sure to treat it as an string or you risk truncating..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return value into the same space as..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring the iPhone as of iPhone SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c 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..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode the raw app window and insert another landscape view with no problem. As of April 2011 there is no reason to support anything below 4.0 so the question is now only a historic curiosity. It's incredible how.. It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library get SSID without private library I have a commercial app that has a completely legitimate reason to see the SSID of the network it is connected to If it is connected to a Adhoc network for a 3rd party..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root not sure why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c 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..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare further details too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation..
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 ref counting share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how.. void imp CGRect result func _controller selector someRect someView Reasoning for Warning The reason for this warning is that with ARC the runtime needs to know what to do with the result of the method.. few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder 17148 20b Terminating app due to uncaught exception ' NSInternalInconsistencyException ' reason ' UIViewController _loadViewFromNibNamed bundle loaded the Question1View nib but the view outlet was..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier... they're not the #1 selling point of ARC. For 95 of code out there ARC is brilliant and there is no reason at all to avoid it provided you can handle the OS version restrictions . For non ARC code you can pass..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch that should be substituted. In the case of #038 it represents the character with the value of 38 in the ISO 8859 1 character encoding scheme which is . The reason the ampersand has to be encoded in RSS is it's a reserved special character. What you need to do is parse the string and replace the entities with a byte matching..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention avoid conflict with incoming parameter names. Even in Apple sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus.. in names from parameters is quickly revealed by the compiler and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same as the property used to access it the property and synthesize statement will also be..
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 to be here is now a broken link. iphone ios share improve this question I downloaded your project. The error you are getting is 'NSUnknownKeyException' reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for the key string.' It is caused by the Second view controller..
http://stackoverflow.com/questions/3097244/exit-application-in-ios-4-0 exiting manually. If you restart the app ideally it would start where you left off so this is either by resuming or by starting and loading the old state. No reason for exit. Edit As this keeps popping up again iOS Human Interface Guidelines says Don't Quit Programmatically . And we have seen many reports of apps that had calls..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version systemVersion if currSysVer compare reqSysVer options NSNumericSearch NSOrderedAscending displayLinkSupported TRUE Important Note If for whatever reason you decide that systemVersion is what you want make sure to treat it as an string or you risk truncating the minor revision number eg. 3.1.2 3.1 . share improve..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework log2n FFT_INVERSE FFT on n real floats and then reverse to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return value into the same space as the send value. To give some perspective like as in why would..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring with the iPad SDK 3.2 or around 3.2 and is available on the iPhone as of iPhone SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings will be changing often and so I would prefer not to use..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c @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 Objective C 2.0 practice is to use the..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode you can see in the demo project you can swap out leave only the raw app window and insert another landscape view with no problem. As of April 2011 there is no reason to support anything below 4.0 so the question is now only a historic curiosity. It's incredible how much trouble that caused so many developers for so long Purely.. below 4.0 so the question is now only a historic curiosity. It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY DIFFICULT to make this work fully properly there are at least..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library get SSID without private library I have a commercial app that has a completely legitimate reason to see the SSID of the network it is connected to If it is connected to a Adhoc network for a 3rd party hardware device it needs to be functioning in a different..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root I would like to avoid private APIs and the like but I'm not sure why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation controllers. The problem with this..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c @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 Objective C 2.0 practice is to use the..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare conditions and page 364. The above linked paper has further details too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need. And..
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 get this warning anymore iphone objective c ios automatic ref counting share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how SEL selector NSSelectorFromString @ someMethod IMP imp _controller.. methodForSelector selector CGRect func id SEL CGRect UIView void imp CGRect result func _controller selector someRect someView Reasoning for Warning The reason for this warning is that with ARC the runtime needs to know what to do with the result of the method you're calling. The result could be anything void int char.. but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though you don't want to use it. From the compiler's..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder run the code Im getting this error 2009 05 14 15 05 37.152 iMobiDines 17148 20b Terminating app due to uncaught exception ' NSInternalInconsistencyException ' reason ' UIViewController _loadViewFromNibNamed bundle loaded the Question1View nib but the view outlet was not set.' Im sure there is a way to load the view using the..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons leak memory during ObjC or C exception throws in ObjC code but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from using ARC in many projects. __weak pointers.. fairly easy to work around. __weak pointers are great but they're not the #1 selling point of ARC. For 95 of code out there ARC is brilliant and there is no reason at all to avoid it provided you can handle the OS version restrictions . For non ARC code you can pass fno objc arc on a file by file basis. Xcode unfortunately..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch of #038 it represents the character with the value of 38 in the ISO 8859 1 character encoding scheme which is . The reason the ampersand has to be encoded in RSS is it's a reserved special character. What you need to do is parse the string and..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention Even in Apple sample code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without.. by the compiler and avoided through more thoughtful naming of parameters or internal variables . 2 even better reason if you use refactor in XCode on an internal class var that is named the same as the property used to access it the property..
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 ios share improve this question I downloaded your project. The error you are getting is 'NSUnknownKeyException' reason ' UIViewController 0x3927310 setValue forUndefinedKey this class is not key value coding compliant for the key string.'..
http://stackoverflow.com/questions/3097244/exit-application-in-ios-4-0 ideally it would start where you left off so this is either by resuming or by starting and loading the old state. No reason for exit. Edit As this keeps popping up again iOS Human Interface Guidelines says Don't Quit Programmatically . And we have..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version compare reqSysVer options NSNumericSearch NSOrderedAscending displayLinkSupported TRUE Important Note If for whatever reason you decide that systemVersion is what you want make sure to treat it as an string or you risk truncating the minor revision..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework and then reverse to get back to where we started. ip stands for in place which means A gets overwritten That's the reason for all this special packing malarkey so that we can squash the return value into the same space as the send value. To give..
How do you use NSAttributedString? http://stackoverflow.com/questions/3482346/how-do-you-use-nsattributedstring and is available on the iPhone as of iPhone SDK 4.0 beta . I would like to have a string that has three colours. The reason I don't use 3 separate NSStrings is because the length of each of the three NSAttributedString substrings will be changing..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c 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..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode swap out leave only the raw app window and insert another landscape view with no problem. As of April 2011 there is no reason to support anything below 4.0 so the question is now only a historic curiosity. It's incredible how much trouble that caused.. historic curiosity. It's incredible how much trouble that caused so many developers for so long Purely for historical reasons here is the original discussion and solution to repeat this is totally irrelevant now It is EXTREMELY DIFFICULT to make..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library get SSID without private library I have a commercial app that has a completely legitimate reason to see the SSID of the network it is connected to If it is connected to a Adhoc network for a 3rd party hardware device..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root and the like but I'm not sure why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason I've thought about putting the tab bar controller as the main controller with each of the tabs containing separate navigation..
Property vs instance variable in Objective-C [duplicate] http://stackoverflow.com/questions/6146244/property-vs-instance-variable-in-objective-c 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..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare linked paper has further details too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM..
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 c ios automatic ref counting share improve this question Solution The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored and it's easy to work around. Here's how SEL selector NSSelectorFromString.. func id SEL CGRect UIView void imp CGRect result func _controller selector someRect someView Reasoning for Warning The reason for this warning is that with ARC the runtime needs to know what to do with the result of the method you're calling. The.. Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't retain and release the object value that's returned from methodForSelector even though..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder 05 14 15 05 37.152 iMobiDines 17148 20b Terminating app due to uncaught exception ' NSInternalInconsistencyException ' reason ' UIViewController _loadViewFromNibNamed bundle loaded the Question1View nib but the view outlet was not set.' Im sure there..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons throws in ObjC code but this is at the cost of both time and space performance. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from.. are great but they're not the #1 selling point of ARC. For 95 of code out there ARC is brilliant and there is no reason at all to avoid it provided you can handle the OS version restrictions . For non ARC code you can pass fno objc arc on a..
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 NSString mimeType block void ^ id obj block void handleNetworkErrorWithError NSError error void handleNoAccessWithReason NSString reason @end NetworkClient.m NetworkClient.m Created by LJ Wilson on 2 3 12. Copyright c 2012 LJ Wilson. All rights.. class if NSDictionary retObj valueForKey @ Message isEqualToString @ No Access block nil self handleNoAccessWithReason NSDictionary retObj valueForKey @ Reason else if retObj isKindOfClass NSArray class if NSArray retObj count 0 NSDictionary.. @ Message isEqualToString @ No Access block nil self handleNoAccessWithReason NSDictionary retObj valueForKey @ Reason else if retObj isKindOfClass NSArray class if NSArray retObj count 0 NSDictionary dict NSArray retObj objectAtIndex 0..
still dyld: Library not loaded http://stackoverflow.com/questions/12915050/still-dyld-library-not-loaded AdSupport Referenced from var mobile Applications 8E09C9AA CA81 4C26 AEED B2C632B60A54 Gridlocked.app Gridlocked Reason image not found I use xcode 4.5 my iPad runs iOS 5.1 The app runs fine on simulator both 6.0 5.1 But when I connect iPad..
http://stackoverflow.com/questions/1389655/iphone-email-attachment Developer SDKs iPhoneSimulator3.0.sdk System Library DataClassMigrators AccountMigrator.migrator AccountMigrator Reason image not found 2009 09 07 19 52 23.489 emailTest 11711 5b17 AccountsManager _migrateAccountsIfNeeded Accounts migration..
can i change my iOS deployment target to 5.0 on xcode 4.5? http://stackoverflow.com/questions/14770834/can-i-change-my-ios-deployment-target-to-5-0-on-xcode-4-5 using deployment target of iOS 5 and with launch image of Default 568h@2x.png for iPhone 5 apple will reject my app.. Reason Invalid Launch Image You app contains a launch image with a size modifier that is only supported for apps built with the..
Invoking a http post URL from iphone using .net web service http://stackoverflow.com/questions/1945479/invoking-a-http-post-url-from-iphone-using-net-web-service xsd http www.w3.org 2001 XMLSchema soap Body soap Fault soap Code soap Value soap Receiver soap Value soap Code soap Reason soap Text xml lang en Server was unable to process request. gt Data at the root level is invalid. Line 1 position 1. soap.. lang en Server was unable to process request. gt Data at the root level is invalid. Line 1 position 1. soap Text soap Reason soap Detail soap Fault soap Body soap Envelope Please Help me. Thanks Shibin .net iphone http post web services share..
Properly displaying and dismissing fullscreen MPMoviePlayerController in iOS 3.2 (iPad) http://stackoverflow.com/questions/3239231/properly-displaying-and-dismissing-fullscreen-mpmovieplayercontroller-in-ios-3-2 does not stop Movie reaches end MPMoviePlayerPlaybackDidFinishNotification with the MPMoviePlayerPlaybackDidFinishReasonUserInfoKey set to MPMovieFinishReasonPlaybackEnded If you call setFullscreen NO animated YES on your MoviePlayerController.. with the MPMoviePlayerPlaybackDidFinishReasonUserInfoKey set to MPMovieFinishReasonPlaybackEnded If you call setFullscreen NO animated YES on your MoviePlayerController instance from this notification you'll.. NSNotification notification NSNumber reason notification userInfo objectForKey MPMoviePlayerPlaybackDidFinishReasonUserInfoKey switch reason intValue case MPMovieFinishReasonPlaybackEnded NSLog @ playbackFinished. Reason Playback Ended..
How to tell when controller has resumed from background? http://stackoverflow.com/questions/3535907/how-to-tell-when-controller-has-resumed-from-background resumed a controller Is there a method I can put in my controller to tell me the app has resumed in said controller Reason I ask is because my application handles its own URL schema and I want to update the view depending on the URL launched...
How do I add a third party Framework to iPhone project? http://stackoverflow.com/questions/505974/how-do-i-add-a-third-party-framework-to-iphone-project Application Support iPhone Simulator User Applications BB3C66B2 A5BB 4329 B163 AB0072411AF1 Congress.app Congress Reason image not found I'm not sure exactly where the Framework needs to reside on disk to be found. Thanks iphone cocoa xcode..
Programmatically detect if app is being run on device or simulator http://stackoverflow.com/questions/5775420/programmatically-detect-if-app-is-being-run-on-device-or-simulator I'd like to know whether my app is being run on device or simulator at run time. Is there a way to detect this Reason being to test bluetooth api with simulator http volcore.limbicsoft.com 2009 09 iphone os 31 gamekit pt 1 woooohooo.html..
why is “error:&error” used here (objective-c) http://stackoverflow.com/questions/8334518/why-is-errorerror-used-here-objective-c argument type has to be NSError instead of NSError 1. variable scoping rules and 2. NSError instances are imutable. Reason #1 variable scoping rules Let's assume that the function declaration were to look like this NSArray executeFetchRequest.. ... error NSError alloc init... autorelease local only error SomeNSErrorSubclass alloc init... autorelease local only Reason #2 instances of NSError are immutable Let's keep the same function declaration but call the function like this NSError error..
iOS: Access app-info.plist variables in code http://stackoverflow.com/questions/9530075/ios-access-app-info-plist-variables-in-code in code I am working on a Universal app would like to access the values stored in app info.plist file in my code. Reason I instantiate a UIViewController dynamically from a storyboard using UIStoryboard storyboard UIStoryboard storyboardWithName..
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