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2014/10/15 ¤U¤È 10:04:31
iphone Programming Glossary: badHow 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 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.. NSURL URLWithString @ http www.google.com return URLString NULL YES NO Is what I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview It would appear that using the variable name 'delegate' in any UI Kit subclass is a really bad idea because it can occlude the same name in a superclass and silently break things like autorotation...
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 instead of SecondView . Changing to the correct class resolves the problem. By the way it is bad practice to have names like string in Objective C. It invites a runtime naming collision. Avoid them..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received still valid during your emulator testing but is more likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway..
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 to reduce memory usage while drawing init'ing your NSOperations with a docRef is a bad idea memory wrap the docRef into a singleton. Cancel needless NSOperations When you can especially if..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview correct the wrong frame size by the fitting size. This sounds terrible but it's actually not that bad. Since we do both frame changes right after each other the view isn't updated and doesn't flicker. Of..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode appear it is NO longer necessary to force the size of the view on every view and the specific bad problem of landscape only working the first time has been resolved. As you can see in the demo project..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom at 4x. When I finish the zoom it ends up at the correct scale but the actual act of zooming looks bad. So first how do I allow the graph to redraw itself at the standard scale of 1x1 after zooming and how..
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet C but I'm still in the beginning of learning. Perhaps I'm doing something wrong and have a bad coding practice somewhere. Thanks you in advance if you can help me iphone objective c osx static analysis..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c we're the ones that created it. If we call release however the reference count will hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string...
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature NSLocale loc NSLocale alloc initWithLocaleIdentifier @ en_US df setLocale loc loc release Not too bad in onsies twosies but I'm dealing with about ten different apps and the first one I look at has 43 instances..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su controller which is a pain to manage loaded with little annoyances and in general feels like a bad hack when implementing Apple also recommends against doing this . Presenting a modal view controller..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud the UIImage imageNamed FUD I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s... windows or murder your children. It's pretty simple but it is an optimisation tool. Sadly it is badly named and there is no equivaluent that is as easy to use hence people overuse it and get upset when..
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 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 and an unnecessary overhead on my application... NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com return URLString NULL YES NO Is what I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability ..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview YES if event handled @end @interface EventInterceptWindow UIWindow It would appear that using the variable name 'delegate' in any UI Kit subclass is a really bad idea because it can occlude the same name in a superclass and silently break things like autorotation. id EventInterceptWindowDelegate eventInterceptDelegate @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 controller in MainWindow.xib having a class of UIViewController instead of SecondView . Changing to the correct class resolves the problem. By the way it is bad practice to have names like string in Objective C. It invites a runtime naming collision. Avoid them even in once off practice apps. Naming collisions can be very..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received allocated while you are using it or be released but coincidentally still valid during your emulator testing but is more likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app..
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 ctx kCGRenderingIntentDefault before CGContextDrawPDFPage to reduce memory usage while drawing init'ing your NSOperations with a docRef is a bad idea memory wrap the docRef into a singleton. Cancel needless NSOperations When you can especially if they will be using memory beware of leaving contexts open..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview size prior to sending sizeThatFits . After that we can correct the wrong frame size by the fitting size. This sounds terrible but it's actually not that bad. Since we do both frame changes right after each other the view isn't updated and doesn't flicker. Of course we have to wait until the content has been loaded so..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode in a Landscape only iPad app. LandscapeOnlyProblemTest It would appear it is NO longer necessary to force the size of the view on every view and the specific bad problem of landscape only working the first time has been resolved. As you can see in the demo project you can swap out leave only the raw app window and insert..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom looks like if I was zoomed to 2x for example it's suddenly at 4x. When I finish the zoom it ends up at the correct scale but the actual act of zooming looks bad. So first how do I allow the graph to redraw itself at the standard scale of 1x1 after zooming and how do I have a smooth zoom throughout Edit New findings The..
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet class itself is a good practice or not. I'm not fresh in Objective C but I'm still in the beginning of learning. Perhaps I'm doing something wrong and have a bad coding practice somewhere. Thanks you in advance if you can help me iphone objective c osx static analysis instance variables share improve this question Is..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c The caller shouldn't be responsible for releasing it since we're the ones that created it. If we call release however the reference count will hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string. By explicitly calling autorelease we pass the responsibility..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature a specific region generally the US but this is a bit messy NSLocale loc NSLocale alloc initWithLocaleIdentifier @ en_US df setLocale loc loc release Not too bad in onsies twosies but I'm dealing with about ten different apps and the first one I look at has 43 instances of this scenario. So any clever ideas for a macro overridden..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su view controller requires passing events to the sub view controller which is a pain to manage loaded with little annoyances and in general feels like a bad hack when implementing Apple also recommends against doing this . Presenting a modal view controller again places a view controller on top of another and while..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud the UIImage imageNamed FUD I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s. See this SO question for example or this article on iPhoneDeveloperTips.com.. the case. So there you have it. imageNamed will not smash your windows or murder your children. It's pretty simple but it is an optimisation tool. Sadly it is badly named and there is no equivaluent that is as easy to use hence people overuse it and get upset when it simply does its job I added a category to UIImage to fix..
Iphone - How to encrypt NSData with public key and decrypt with private key? http://stackoverflow.com/questions/10072124/iphone-how-to-encrypt-nsdata-with-public-key-and-decrypt-with-private-key keyPairAttr publicKey privateKey LOGGING_FACILITY sanityCheck noErr publicKey NULL privateKey NULL @ Something really bad went wrong with generating the key pair. if sanityCheck noErr publicKey NULL privateKey NULL NSLog @ Successful privateKeyAttr..
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 . 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 and.. stringWithContentsOfURL NSURL URLWithString @ http www.google.com return URLString NULL YES NO Is what I have done bad Not to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective..
Observing pinch multi-touch gestures in a UITableView http://stackoverflow.com/questions/2003201/observing-pinch-multi-touch-gestures-in-a-uitableview UIWindow It would appear that using the variable name 'delegate' in any UI Kit subclass is a really bad idea because it can occlude the same name in a superclass and silently break things like autorotation. id EventInterceptWindowDelegate..
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 class of UIViewController instead of SecondView . Changing to the correct class resolves the problem. By the way it is bad practice to have names like string in Objective C. It invites a runtime naming collision. Avoid them even in once off practice..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received released but coincidentally still valid during your emulator testing but is more likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are..
How To Create A Gallery on iOS http://stackoverflow.com/questions/3866766/how-to-create-a-gallery-on-ios a gallery without using any third part lib like Three20 Thanks for any reply PS. I think that using fixed dimension is bad because of the new iphone 4 with a different resolution am I right iphone objective c ios share improve this question..
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 before CGContextDrawPDFPage to reduce memory usage while drawing init'ing your NSOperations with a docRef is a bad idea memory wrap the docRef into a singleton. Cancel needless NSOperations When you can especially if they will be using..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview . After that we can correct the wrong frame size by the fitting size. This sounds terrible but it's actually not that bad. Since we do both frame changes right after each other the view isn't updated and doesn't flicker. Of course we have to..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode It would appear it is NO longer necessary to force the size of the view on every view and the specific bad problem of landscape only working the first time has been resolved. As you can see in the demo project you can swap out..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom it's suddenly at 4x. When I finish the zoom it ends up at the correct scale but the actual act of zooming looks bad. So first how do I allow the graph to redraw itself at the standard scale of 1x1 after zooming and how do I have a smooth..
What are the Dangers of Method Swizzling in Objective C? http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c using sharp knives in the kitchen. Some people are scared of sharp knives because they think they'll cut themselves badly but the truth is that sharp knives are safer . Method swizzling can be used to write better more efficient more maintainable.. The same can be said about swizzling. You should form your own opinion once you fully understand both the good and the bad. Discussion Here are some of the pitfalls of method swizzling Method swizzling is not atomic Changes behavior of un owned..
http://stackoverflow.com/questions/6124109/instance-variables-with-underscore-in-objective-c-2-0-and-renaming-with-synthet I'm not fresh in Objective C but I'm still in the beginning of learning. Perhaps I'm doing something wrong and have a bad coding practice somewhere. Thanks you in advance if you can help me iphone objective c osx static analysis instance variables..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c releasing it since we're the ones that created it. If we call release however the reference count will hit zero and bad memory will be returned to the caller. The answer is to call autorelease before returning the string. By explicitly calling..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature this is a bit messy NSLocale loc NSLocale alloc initWithLocaleIdentifier @ en_US df setLocale loc loc release Not too bad in onsies twosies but I'm dealing with about ten different apps and the first one I look at has 43 instances of this scenario...
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su events to the sub view controller which is a pain to manage loaded with little annoyances and in general feels like a bad hack when implementing Apple also recommends against doing this . Presenting a modal view controller again places a view..
http://stackoverflow.com/questions/8482327/learning-opengles-2-0-on-ios are more advanced and expensive books though. If you're just getting started with OpenGL ES 2.0 it might not be a bad idea to start using GLKit available only on iOS 5.0 which simplifies some of the normal setup chores around your render..
UIWebView - How to identify the “last” webViewDidFinishLoad message? http://stackoverflow.com/questions/908367/uiwebview-how-to-identify-the-last-webviewdidfinishload-message
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud the UIImage imageNamed FUD I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s. See this SO question.. will not smash your windows or murder your children. It's pretty simple but it is an optimisation tool. Sadly it is badly named and there is no equivaluent that is as easy to use hence people overuse it and get upset when it simply does its..
Upload multiple photos on Facebook using Batch Request http://stackoverflow.com/questions/10291741/upload-multiple-photos-on-facebook-using-batch-request result body error 0 error_description File file1 has not been attached code 400 headers name HTTP 1.1 value 400 Bad Request name Content Type value text javascript charset UTF 8 body error 0 error_description File file2 has not been.. UTF 8 body error 0 error_description File file2 has not been attached code 400 headers name HTTP 1.1 value 400 Bad Request name Content Type value text javascript charset UTF 8 I don't know how this files attached.. Can anyone help..
Pros and cons of using storyboards http://stackoverflow.com/questions/10872090/pros-and-cons-of-using-storyboards more links I found This one speaks about some of the cons of using storyboards. UIStoryboard on iOS 5 The Good The Bad and the 'This Plain Sucks' This one is mostly about the benefits. What are the advantages of iOS 5.0 storyboarding over..
Need content in UIWebView to display quickly http://stackoverflow.com/questions/1246420/need-content-in-uiwebview-to-display-quickly without it scrolling was painful at best . Glenn Andreas gandreas@xxxxxxxxxxxx http www.gandreas.com wicked fun Mad Bad and Dangerous to Know The above email can be found at http www.cocoabuilder.com archive message cocoa 2009 8 10 242484 with..
Change string color with NSAttributedString? http://stackoverflow.com/questions/14287386/change-string-color-with-nsattributedstring I have a slider for a survey that display the following strings based on the value of the slider Very Bad Bad Okay Good Very Good . Here is the code for the slider IBAction sliderValueChanged UISlider sender scanLabel.text NSString.. I have a slider for a survey that display the following strings based on the value of the slider Very Bad Bad Okay Good Very Good . Here is the code for the slider IBAction sliderValueChanged UISlider sender scanLabel.text NSString.. sender scanLabel.text NSString stringWithFormat @ .f sender value NSArray texts NSArray arrayWithObjects @ Very Bad @ Bad @ Okay @ Good @ Very Good @ Very Good nil NSInteger sliderValue sender value make the slider value in given range..
How to get user details using twitter api v1.1 (Twitter error 215) http://stackoverflow.com/questions/17081012/how-to-get-user-details-using-twitter-api-v1-1-twitter-error-215 NSUTF8StringEncoding options NSJSONReadingMutableContainers error err Error is shown as below errors code 215 message Bad Authentication data iphone ios xcode ipad mgtwitterengine share improve this question First you need to Authenticate..
Get a PDF/PNG as output from a UIWebView or UIView http://stackoverflow.com/questions/2454309/get-a-pdf-png-as-output-from-a-uiwebview-or-uiview ctx 0 mediaBox.size.height self.layer renderInContext ctx CGPDFContextEndPage ctx CFRelease ctx @end Bad news UIWebView does not create nice shapes and text in the PDF but renders itself as an image into the PDF. share improve..
NSURLConnection, NSURLRequest, untrusted cert and user authentication http://stackoverflow.com/questions/2949640/nsurlconnection-nsurlrequest-untrusted-cert-and-user-authentication forAuthenticationChallenge challenge else challenge sender cancelAuthenticationChallenge challenge NSLog @ Bad Username Or Password badUsernameAndPassword YES finished YES iphone cocoa nsurlconnection nsurlrequest nsurlcredential..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received to this question deal with the general EXC_BAD_ACCESS error so I will leave this open as a catch all for the dreaded Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information..
http://stackoverflow.com/questions/5139302/sqlite-database-on-phonegap Edit This specification has been marked as deprecated since the writing of this answer and it's now an officially Bad Idea™ to depend on it. In reality it's based on SQLite in most browsers that support it but it won't be exactly the..
Bad URL when requesting with NSURL http://stackoverflow.com/questions/6287230/bad-url-when-requesting-with-nsurl URL when requesting with NSURL I'm trying to request this kind of URL in iPhone 4.0 SDK access token slightly modified..
Text-to-speech on iPhone [closed] http://stackoverflow.com/questions/6347072/text-to-speech-on-iphone request. VoiceText from NeoSpeech. Price available on request. https bitbucket.org sfoster iphone tts Festival port. Bad quality. Related to this here is how you can use Google's online TTS code taken from iPhone SDK Google TTS and encoding..
UISearchDisplayController causes crash after viewDidUnload http://stackoverflow.com/questions/8567525/uisearchdisplaycontroller-causes-crash-after-viewdidunload view controller and the property for the Search Display Controller but create my own IBOutlet for it it still crashes. Bad bug perhaps UPDATE 2 When I programmatically create my own instance of a UISearchDisplayController not through the storyboard..
Register app to open image files http://stackoverflow.com/questions/9481534/register-app-to-open-image-files
iPhone assembly, compilation error with LDR parameters http://stackoverflow.com/questions/9735169/iphone-assembly-compilation-error-with-ldr-parameters r5 DEC_OPB @ ERROR Unsupported relocation on symbol L0. ERROR Undefined local symbol 0 0f or 0b ldr r5 DEC_OPB @ ERROR Bad immediate value for offset 51024 . ERROR Unsupported relocation on symbol null Is it possible to override those lines with..
NSSetUncaughtExceptionHandler not catch all errors on iPhone http://stackoverflow.com/questions/1128539/nssetuncaughtexceptionhandler-not-catch-all-errors-on-iphone argc argv nil nil pool release return retVal However the thing not caught a lot of errors like a bad release a BAD ACCES etc and the App disappear. I have 2 issues where is not clear why happend and the end users have not clue about what.. errors so the end user simple send me a crash report iphone error handling crash share improve this question EXC_BAD_ACCESS doesn't generate an exception it generates a signal SIGSEGV . To catch it you need a signal handler. Christopher..
JSON IPHONE: How to send a JSON request and pull the data from a server? http://stackoverflow.com/questions/1518279/json-iphone-how-to-send-a-json-request-and-pull-the-data-from-a-server urn NSString alloc initWithData data encoding NSASCIIStringEncoding autorelease all this code gives me is errors. Or BAD URL or java exception. What is wrong with this code If you guys prefer to give another solution using the json framework..
http://stackoverflow.com/questions/2426651/pickerview-exc-bad-access EXC BAD ACCESS I keep getting a exc bad access error and I think it has something to do with my pickerview because this is when..
warning: Attempting to create USE_BLOCK_IN_FRAME variable with block that isn't in the frame http://stackoverflow.com/questions/3637714/warning-attempting-to-create-use-block-in-frame-variable-with-block-that-isnt from within my iPhone app. I think all my setup code for Core Data is fine. Whenever this method is called I get EXEC BAD ACCESS. void loadInitialData NSAutoreleasePool pool NSAutoreleasePool alloc init name ZSTREET_1 ZSTREET_2 ZCITY ZZIP ZURL..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature a bug And see https developer.apple.com library ios qa qa1480 _index.html Apparently Apple has declared this to be BAD Broken As Designed and they aren't going to fix it. The circumvention is apparently to set the locale of the date formatter..
EXE BAD ACCESS in line 14 in main.m after I type randomly when program launches? http://stackoverflow.com/questions/7670229/exe-bad-access-in-line-14-in-main-m-after-i-type-randomly-when-program-launches BAD ACCESS in line 14 in main.m after I type randomly when program launches I got this weird crash EXE_BAD_ACCESS error when.. BAD ACCESS in line 14 in main.m after I type randomly when program launches I got this weird crash EXE_BAD_ACCESS error when I typed randomly by keyboard in freshly new View Based Application project in Xcode 4.1 and iOS SDK 4.3...
Implementing UIScrollView programmatically http://stackoverflow.com/questions/8909347/implementing-uiscrollview-programmatically other. If I do self.view addSubView ScrollView I get a runtime error or something it usually just says something like BAD ACCESS or SIGABRT . What am I doing wrong Am I on the wrong path completely only two days in to ios programming still a..
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