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2014/10/15 ¤U¤È 10:11:31
iphone Programming Glossary: moreiOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size I was just wondering with how should we deal with the iPhone 5 bigger screen size. As it has more pixels in height things like GCRectMake that use coordinates and just doubled the pixels with the retina..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone errors. A later comment on that post includes this adapted code which works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this.. code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality you need in forward and reverse... NSData..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language fallbacks. You would want to call this sometime early in your application's startup. You can read more about language locale preferences here Internationalization Programming Topics Getting the Current Language..
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 can open. For a list of system defined UTIs see Apple's Uniform Type Identifiers Reference . Even more detail on UTIs can be found in Apple's Uniform Type Identifiers Overview . Those guides reside in the..
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 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..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did.. 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..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version relying on the version string as an indication of device or OS capabilities. There is usually a more reliable method of checking whether a particular feature or class is available. For example you can..
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 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES https.. may change see below Karl's library http stackoverflow.com a 5721978 153422 takes much more effort to setup but much nicer long term solution it converts your library into a Framework . RECENT..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c accessing its backing ivar directly though using the 2.0 dot access to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject.. to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject NSNumber bar @property readwrite retain NSNumber bar @end @implementation..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c done. This method is straight forward and common in Apple's libraries but new code should use the more modern approach below. 2 A Formal Protocol The newer option is to declare a formal protocol. The declaration.. before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now and apps if the hashing is done in the same way . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a..
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 but why would that cause a leak And how can I change my code so that I don't get this warning anymore iphone objective c ios automatic ref counting share improve this question Solution The compiler.. imp _controller methodForSelector selector void func id SEL void imp func _controller selector Or more tersely though hard to read SEL selector NSSelectorFromString @ someMethod void id SEL _controller methodForSelector.. It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more typing and is also slower so there's little reason to do it. 1 All Objective C methods have two hidden..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications Store applications we build so checking for nil then performing set instructions should make it more difficult for crackers and pirates. I can't take credit for this so please visit How to Thwart iPhone..
Autorotate in iOS 6 has strange behaviour http://stackoverflow.com/questions/12526054/autorotate-in-ios-6-has-strange-behaviour its place you should use the supportedInterfaceOrientationsForWindow and shouldAutorotate methods. More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController.. rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate..
iOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate controllers rotate to landscape breaking those that weren't meant to. The iOS 6 release notes say More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController.. rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate..
How to save picture to iPhone photo library? http://stackoverflow.com/questions/178915/how-to-save-picture-to-iphone-photo-library
Is it possible to program iPhone in C++ http://stackoverflow.com/questions/270455/is-it-possible-to-program-iphone-in-c
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 section. This answer is a slightly adapted version of Sherman Lo 's answer Addendum More detailed information on this topic can also be found in the first answer to this question . There's..
how to display test IAd banner in the simulator http://stackoverflow.com/questions/5947552/how-to-display-test-iad-banner-in-the-simulator
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 where silencing this warning was necessary and the above doesn't handle things properly . More It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more..
canonical way to randomize an NSArray in Objective C http://stackoverflow.com/questions/791232/canonical-way-to-randomize-an-nsarray-in-objective-c above n and takes random modulo m then throws away the random number if it's between n and m. More naive techniques like taking random modulo n introduce a bias towards smaller numbers in the range...
How can I get a precise time, for example in milliseconds in Objective-C? http://stackoverflow.com/questions/889380/how-can-i-get-a-precise-time-for-example-in-milliseconds-in-objective-c an easy way to get a time very precisely I need to calculate some delays between method calls. More specifically I want to calculate the speed of scrolling in an UIScrollView. iphone objective c cocoa..
iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size How to develop or migrate apps for iPhone 5 screen resolution I was just wondering with how should we deal with the iPhone 5 bigger screen size. As it has more pixels in height things like GCRectMake that use coordinates and just doubled the pixels with the retina non retina problem won't work seamlessly between versions..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone extra comma in each call to CCCrypt which caused compile errors. A later comment on that post includes this adapted code which works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state.. UTF8String pool drain return 0 Given this code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality you need in forward and reverse... NSData encryptString NSString plaintext withKey NSString key return..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language
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 array of Uniform Type Identifiers UTIs that your application can open. For a list of system defined UTIs see Apple's Uniform Type Identifiers Reference . Even more detail on UTIs can be found in Apple's Uniform Type Identifiers Overview . Those guides reside in the Mac developer center because this capability has been ported..
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 the..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received 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 in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did you deal with it iphone objective c ios xcode cocoa touch .. it. If you don't the memory may remain 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..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version UIDevice currentDevice systemVersion However you should avoid relying on the version string as an indication of device or OS capabilities. There is usually a more reliable method of checking whether a particular feature or class is available. For example you can check if UIPopoverController is available on the current device..
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 how do i compile a static library fat for armv6 armv7 and i386 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES https gist.github.com 3705459 easy copy paste of latest version but.. 3705459 easy copy paste of latest version but install instructions may change see below Karl's library http stackoverflow.com a 5721978 153422 takes much more effort to setup but much nicer long term solution it converts your library into a Framework . RECENT CHANGES Info on how to use this script with a project embedded..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c hard to confuse when you're accessing a property or when you're accessing its backing ivar directly though using the 2.0 dot access to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject NSNumber bar @property readwrite retain NSNumber bar.. its backing ivar directly though using the 2.0 dot access to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject NSNumber bar @property readwrite retain NSNumber bar @end @implementation Foo @synthesize bar void baz NSNumber numberOne..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c method. Delegates simply implement this method and they're done. This method is straight forward and common in Apple's libraries but new code should use the more modern approach below. 2 A Formal Protocol The newer option is to declare a formal protocol. The declaration would look like this @protocol NSWindowNotifications.. most delegate methods you still need to check with respondsToSelector before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now create the same result every time even across reinstalls and apps if the hashing is done in the same way . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart 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 the compiler can't check if the selector exists or not but why would that cause a leak And how can I change my code so that I don't 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.. how SEL selector NSSelectorFromString @ someMethod IMP imp _controller methodForSelector selector void func id SEL void imp func _controller selector Or more tersely though hard to read SEL selector NSSelectorFromString @ someMethod void id SEL _controller methodForSelector selector _controller selector Explanation What's.. and the above doesn't handle things properly . More It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more typing and is also slower so there's little reason to do it. 1 All Objective C methods have two hidden arguments self and _cmd that are implicitly added when you..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications Generally we don't have SignerIdentity in any of the App Store applications we build so checking for nil then performing set instructions should make it more difficult for crackers and pirates. I can't take credit for this so please visit How to Thwart iPhone IPA Crackers. There's loads of information there about piracy..
Autorotate in iOS 6 has strange behaviour http://stackoverflow.com/questions/12526054/autorotate-in-ios-6-has-strange-behaviour method of UIViewController is deprecated. In its place you should use the supportedInterfaceOrientationsForWindow and shouldAutorotate methods. More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController do not consult their children to determine whether they.. for its supported interface orientations whenever the device rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate method. The system intersects the view controller..
iOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate returning from view controller #4 to #3. In iOS 6 all view controllers rotate to landscape breaking those that weren't meant to. The iOS 6 release notes say More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController do not consult their children to determine whether they.. for its supported interface orientations whenever the device rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate method. ... The system determines whether an orientation..
How to save picture to iPhone photo library? http://stackoverflow.com/questions/178915/how-to-save-picture-to-iphone-photo-library
Is it possible to program iPhone in C++ http://stackoverflow.com/questions/270455/is-it-possible-to-program-iphone-in-c
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
how to display test IAd banner in the simulator http://stackoverflow.com/questions/5947552/how-to-display-test-iad-banner-in-the-simulator
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 coming up blank. Someone please share if they have had an experience where silencing this warning was necessary and the above doesn't handle things properly . More It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more typing and is also slower so there's little reason to do..
canonical way to randomize an NSArray in Objective C http://stackoverflow.com/questions/791232/canonical-way-to-randomize-an-nsarray-in-objective-c integer below n without bias. Computes m a power of two slightly above n and takes random modulo m then throws away the random number if it's between n and m. More naive techniques like taking random modulo n introduce a bias towards smaller numbers in the range. static NSUInteger random_below NSUInteger n NSUInteger m 1 Compute..
How can I get a precise time, for example in milliseconds in Objective-C? http://stackoverflow.com/questions/889380/how-can-i-get-a-precise-time-for-example-in-milliseconds-in-objective-c time for example in milliseconds in Objective C Is there an easy way to get a time very precisely I need to calculate some delays between method calls. More specifically I want to calculate the speed of scrolling in an UIScrollView. iphone objective c cocoa touch uikit share improve this question NSDate and the..
iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size 5 screen resolution I was just wondering with how should we deal with the iPhone 5 bigger screen size. As it has more pixels in height things like GCRectMake that use coordinates and just doubled the pixels with the retina non retina problem..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone caused compile errors. A later comment on that post includes this adapted code which works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls.. return 0 Given this code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality you need in forward and reverse... NSData encryptString NSString..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language and French as fallbacks. You would want to call this sometime early in your application's startup. You can read more about language locale preferences here Internationalization Programming Topics Getting the Current Language and Locale ..
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 your application can open. For a list of system defined UTIs see Apple's Uniform Type Identifiers Reference . Even more detail on UTIs can be found in Apple's Uniform Type Identifiers Overview . Those guides reside in the Mac developer center..
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..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received dreaded Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before and how did you deal with it iphone.. 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..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version you should avoid relying on the version string as an indication of device or OS capabilities. There is usually a more reliable method of checking whether a particular feature or class is available. For example you can check if UIPopoverController..
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 armv6 armv7 and i386 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES https gist.github.com 3705459.. but install instructions may change see below Karl's library http stackoverflow.com a 5721978 153422 takes much more effort to setup but much nicer long term solution it converts your library into a Framework . RECENT CHANGES Info on how..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c property or when you're accessing its backing ivar directly though using the 2.0 dot access to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject NSNumber bar.. the 2.0 dot access to properties does make it more possible. Using the standard message passing syntax makes intent more explicit IMO. @interface Foo NSObject NSNumber bar @property readwrite retain NSNumber bar @end @implementation Foo @synthesize..
Proper way to exit iPhone application? http://stackoverflow.com/questions/355168/proper-way-to-exit-iphone-application
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c method and they're done. This method is straight forward and common in Apple's libraries but new code should use the more modern approach below. 2 A Formal Protocol The newer option is to declare a formal protocol. The declaration would look.. to check with respondsToSelector before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking whether..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now across reinstalls and apps if the hashing is done in the same way . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying..
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 exists or not but why would that cause a leak And how can I change my code so that I don't get this warning anymore iphone objective c ios automatic ref counting share improve this question Solution The compiler is warning about this.. @ someMethod IMP imp _controller methodForSelector selector void func id SEL void imp func _controller selector Or more tersely though hard to read SEL selector NSSelectorFromString @ someMethod void id SEL _controller methodForSelector selector.. properly . More It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more typing and is also slower so there's little reason to do it. 1 All Objective C methods have two hidden arguments self and..
Reducing piracy of iPhone applications http://stackoverflow.com/questions/846309/reducing-piracy-of-iphone-applications in any of the App Store applications we build so checking for nil then performing set instructions should make it more difficult for crackers and pirates. I can't take credit for this so please visit How to Thwart iPhone IPA Crackers. There's..
How to merge the perspective image(3D Transform)? http://stackoverflow.com/questions/12457047/how-to-merge-the-perspective-image3d-transform blend the images using your above code. So what you are truly looking for is how to apply a 3D transform to an image. More precisely as you are looking for perspective in you own words you are looking on how to warp an homography to an image...
Autorotate in iOS 6 has strange behaviour http://stackoverflow.com/questions/12526054/autorotate-in-ios-6-has-strange-behaviour is deprecated. In its place you should use the supportedInterfaceOrientationsForWindow and shouldAutorotate methods. More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController do not consult.. whenever the device rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate method...
iOS 6: How do I restrict some views to portrait and allow others to rotate? http://stackoverflow.com/questions/12630359/ios-6-how-do-i-restrict-some-views-to-portrait-and-allow-others-to-rotate In iOS 6 all view controllers rotate to landscape breaking those that weren't meant to. The iOS 6 release notes say More responsibility is moving to the app and the app delegate. Now iOS containers such as UINavigationController do not consult.. whenever the device rotates or whenever a view controller is presented with the full screen modal presentation style. Moreover the supported orientations are retrieved only if this view controller returns YES from its shouldAutorotate method...
Dragging an UIView inside UIScrollView http://stackoverflow.com/questions/1481826/dragging-an-uiview-inside-uiscrollview self.center location This works but not fully correct the tile sometimes falls down during the drag process. More precisely it stops receiving touchesMoved invocations and scroll view starts scrolling instead. I noticed that this depends..
How to save picture to iPhone photo library? http://stackoverflow.com/questions/178915/how-to-save-picture-to-iphone-photo-library
How can I disable the UITableView selection highlighting? http://stackoverflow.com/questions/190908/how-can-i-disable-the-uitableview-selection-highlighting
How does -performSelector:withObject:afterDelay: work? http://stackoverflow.com/questions/1922517/how-does-performselectorwithobjectafterdelay-work does not utilize threading but schedules an event to fire at a later date on the current thread. Is this correct More specifically void methodCalledByButtonClick for id obj in array self doSomethingWithObj obj static BOOL isBad NO void doSomethingWithObj..
iPhone UITableView - Delete Button http://stackoverflow.com/questions/2104403/iphone-uitableview-delete-button UILabel cell viewWithTag BOTTOM_LABEL_TAG topLabel.text @ Example Text topLabel.textColor fontColor bottomLabel.text @ More Example Text bottomLabel.textColor fontColor Set the background and selected background images for the text. Since we will..
Core Data multi thread application http://stackoverflow.com/questions/2138252/core-data-multi-thread-application on a thread to the other thread. Instead get the object IDs via objectID and pass it to the other thread. More rules Make sure you save the object into the store before getting the object ID. Until saved they're temporary and you can't..
Is it possible to program iPhone in C++ http://stackoverflow.com/questions/270455/is-it-possible-to-program-iphone-in-c
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 below will be the 'Architecture' section. This answer is a slightly adapted version of Sherman Lo 's answer Addendum More detailed information on this topic can also be found in the first answer to this question . There's also some useful info..
Handling applicationDidBecomeActive http://stackoverflow.com/questions/3639859/handling-applicationdidbecomeactive
Customizing the More menu on a Tab bar http://stackoverflow.com/questions/438381/customizing-the-more-menu-on-a-tab-bar the More menu on a Tab bar I am using a tab bar UITabBarController on my app and I wish to customize the appearance of the table.. and viewDidAppear with no success. The object self.moreNavigationController.topViewController is of type UIMoreListController which seems to be undocumented and I can't see anything obvious in the interface that will help me. Any ideas..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion mat.m31 0 mat.m12 mat.m22 mat.m32 0 mat.m13 mat.m23 mat.m33 0 0 0 0 1 glMultMatrixf rotMat This works really well. More problems arise anyway when I try to find the displacement in space during an acceleration. The Apple Teapot example with..
how to display test IAd banner in the simulator http://stackoverflow.com/questions/5947552/how-to-display-test-iad-banner-in-the-simulator
http://stackoverflow.com/questions/6851660/version-vs-build-in-xcode-4 used for marketing. If you go to Xcode menu About Xcode you'll see the Version and Build numbers. If you hit the More Info... button you'll see a bunch of different versions. Since the More Info... button was removed in Xcode 5 this information.. the Version and Build numbers. If you hit the More Info... button you'll see a bunch of different versions. Since the More Info... button was removed in Xcode 5 this information is also available from the Software Developer section of the System..
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 they have had an experience where silencing this warning was necessary and the above doesn't handle things properly . More It's possible to build up an NSMethodInvocation to handle this as well but doing so requires a lot more typing and is also..
canonical way to randomize an NSArray in Objective C http://stackoverflow.com/questions/791232/canonical-way-to-randomize-an-nsarray-in-objective-c a power of two slightly above n and takes random modulo m then throws away the random number if it's between n and m. More naive techniques like taking random modulo n introduce a bias towards smaller numbers in the range. static NSUInteger random_below..
How can I get a precise time, for example in milliseconds in Objective-C? http://stackoverflow.com/questions/889380/how-can-i-get-a-precise-time-for-example-in-milliseconds-in-objective-c Objective C Is there an easy way to get a time very precisely I need to calculate some delays between method calls. More specifically I want to calculate the speed of scrolling in an UIScrollView. iphone objective c cocoa touch uikit share..
http://stackoverflow.com/questions/402/iphone-app-in-landscape-mode nightmare 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...
Correct way to poll server in background http://stackoverflow.com/questions/4032829/correct-way-to-poll-server-in-background term even if you do manage to pause input for a while and this is why Launching a background task runs a task for NO MORE than 10 minutes unless you are one of the three types of applications that is allowed to stay running. After 10 minutes..
UIFileSharingEnabled has no effect http://stackoverflow.com/questions/4546334/uifilesharingenabled-has-no-effect on iPhone 3GS with iOS 4.2.1. Since it's a bit difficult to isolate the problem and I could probably spend several MORE hours isolating it is there any other known requirement to get file sharing to work iphone ios4 itunes share improve..
Core Data: NSCocoaErrorDomain=134040 Only Occurs On Real Phone, Not Simulator http://stackoverflow.com/questions/7141333/core-data-nscocoaerrordomain-134040-only-occurs-on-real-phone-not-simulator Save partially failed Directory does not exist or is not writable var mobile Applications ... app bundle path MORE CLARIFICATION I actually have 2 persistent stores. One is suppose to be read only data that doesn't change in between upgrades..
Crash when using gesture recognizers in StoryBoard http://stackoverflow.com/questions/9035826/crash-when-using-gesture-recognizers-in-storyboard have it work in the storyboard and I'm afraid that whatever is wrong will cause a crash some other way at some point. MORE INFO In the simulator I get __NSCFString setView unrecognized selector sent to instance 0x6d2db70 Again need debugging techniques.. 0x6d2db70 is Which is exactly like this question with no answer Gesture recognizer in Interface builder crashes my app MORE INFO This is trivial to reproduce New iPhone tabbed application ARC and Storyboard on Drag tap gesture onto second tab's..
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