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2014/10/15 ¤U¤È 10:03:29
iphone Programming Glossary: accordingHow to convert time to the timezone of the iPhone device? http://stackoverflow.com/questions/1081647/how-to-convert-time-to-the-timezone-of-the-iphone-device formatter dateFromString @ 2009 07 04 10 23 23 You have to set the formatter's date format according to the format of your mysql date string. If you need a reference for the format string syntax see Unicode..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari iphone safari mobile safari share improve this question This seems to be the right thing to do according to the Safari Web Content Guide for iPhone meta name format detection content telephone no If you disable..
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices server using some sort of polling system. I thought to use Apple's Push services but apparently according to the comments this is not a workable system. Is there anything fancy that I need to be thinking about..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable The @synthesize directive tells the compiler to generate accessors for your member variables according to the specifications given in the @property directive in your .h file. I.e. if you specify retain the..
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 user etc Replies UITableViewController ... This seems to work ^1 but appears to be unsupported according to the SDK documentation for pushViewController animated emphasis added viewController The view controller..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare array is similar to the newly measured and the first is not. Let's compute the cost matrices according to this paper subsection 2.1 D i j Dist i j MIN D i 1 j D i j 1 D i 1 j 1 Here D i j is the i j element..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the object any other piece of code also..
program access to iPhone volume buttons http://stackoverflow.com/questions/772832/program-access-to-iphone-volume-buttons play but not playing player prepareToPlay . This seems to take care of adjusting the app's volume according to the rocker buttons. There's no other published way currently to handle this. PLEASE READ THE ABOVE..
Google plus api for posting on wall like facebook http://stackoverflow.com/questions/7857812/google-plus-api-for-posting-on-wall-like-facebook are only a limited number of api's available for google developers and that also only as GET calls according to the developer of google page my question will not get any definite answers as google is in the process..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c addObject cardIdObject cardIdObject release So this code executes and does not seem to leak according to the Leaks performance tool . However when stepping through the code at no point does CardIdObject..
Transforming a rectangle image into a quadrilateral using a CATransform3D http://stackoverflow.com/questions/9470493/transforming-a-rectangle-image-into-a-quadrilateral-using-a-catransform3d image so that it is fits the quadrilateral Q. Photoshop calls this transformation Distort. But according to the source of this quadrilateral the perspective of the image moving in space it is in fact the combination..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color is available in red green and purple. Is there any..
http://stackoverflow.com/questions/1861656/iphone-reachability-checking personal phone call to verify that we were giving away items that actually pertained to the movie. According to their usually vague agreement you aren't allowed to have sweepstakes otherwise. I would also think..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication First question 1 Does NSURLConnection have to be set as synchronous to do Basic Auth According to the answer on this post it seems that you can't do Basic Auth if you opt for the async route. 2 Anyone..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code So in your interface definition you add CMMotionManager motionManager CMAttitude referenceAttitude According to the docs you should only create one of these managers per application. I recommend making the motionManager..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do sth. According to Apple we have ONLY 30 seconds to perform this Task Else the Application will be terminated UIApplication.. some NSLog .. into your code. This means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being.. cause your app to be restarted after termination. Now write some Task has to be finished code. According to Apple you have some time 5 seconds left to finish tasks. I discovered that this must be CPU time...
Return to app behavior after phone call different in native code than UIWebView http://stackoverflow.com/questions/5317783/return-to-app-behavior-after-phone-call-different-in-native-code-than-uiwebview to app behavior after phone call different in native code than UIWebView According to Apple's documentation in order to make phone call from my app I need to implement the following protocols..
How to convert time to the timezone of the iPhone device? http://stackoverflow.com/questions/1081647/how-to-convert-time-to-the-timezone-of-the-iphone-device formatter setDateFormat @ yyyy MM dd HH mm ss NSDate sourceDate formatter dateFromString @ 2009 07 04 10 23 23 You have to set the formatter's date format according to the format of your mysql date string. If you need a reference for the format string syntax see Unicode Date Format Patterns . Hope this helps. share improve..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari this behavior for a whole page or an element on a page iphone safari mobile safari share improve this question This seems to be the right thing to do according to the Safari Web Content Guide for iPhone meta name format detection content telephone no If you disable this but still want telephone links you can still use..
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string I created an NSString category method to properly encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch NSMutableString output NSMutableString string const..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices of those change sets to the other devices registered with the server using some sort of polling system. I thought to use Apple's Push services but apparently according to the comments this is not a workable system. Is there anything fancy that I need to be thinking about I have looked at REST frameworks such as ObjectiveResource..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable for it iphone objective c cocoa share improve this question The @synthesize directive tells the compiler to generate accessors for your member variables according to the specifications given in the @property directive in your .h file. I.e. if you specify retain the setter will retain the variable and if you specify copy it..
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 Tweets UITableViewController Detail view of a tweet user etc Replies UITableViewController ... This seems to work ^1 but appears to be unsupported according to the SDK documentation for pushViewController animated emphasis added viewController The view controller that is pushed onto the stack. It cannot be an instance..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare is the most similar to the newly measured Obviously the second array is similar to the newly measured and the first is not. Let's compute the cost matrices according to this paper subsection 2.1 D i j Dist i j MIN D i 1 j D i j 1 D i 1 j 1 Here D i j is the i j element of the cost matrix see below. Check Figure 3 of that paper..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c need to worry about other parts of the system crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the object any other piece of code also referencing the object will be unaffected. What can sometimes..
program access to iPhone volume buttons http://stackoverflow.com/questions/772832/program-access-to-iphone-volume-buttons way to do this now is to have an AVAudioPlayer prepared to play but not playing player prepareToPlay . This seems to take care of adjusting the app's volume according to the rocker buttons. There's no other published way currently to handle this. PLEASE READ THE ABOVE NOTE Yes Use the MPVolumeView MPVolumeView volume MPVolumeView..
Google plus api for posting on wall like facebook http://stackoverflow.com/questions/7857812/google-plus-api-for-posting-on-wall-like-facebook plus share improve this question As it turns out there are only a limited number of api's available for google developers and that also only as GET calls according to the developer of google page my question will not get any definite answers as google is in the process of creating new api's for accessing user information on..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c alloc initWithInt int self.currentCard cardId viewedCardsArray addObject cardIdObject cardIdObject release So this code executes and does not seem to leak according to the Leaks performance tool . However when stepping through the code at no point does CardIdObject appear in viewedCardsArray . Looking through SO I know these..
Transforming a rectangle image into a quadrilateral using a CATransform3D http://stackoverflow.com/questions/9470493/transforming-a-rectangle-image-into-a-quadrilateral-using-a-catransform3d points describing a quadrilateral Q . I want to transform this image so that it is fits the quadrilateral Q. Photoshop calls this transformation Distort. But according to the source of this quadrilateral the perspective of the image moving in space it is in fact the combination of a scale a rotation and a perspective matrix. I..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color is available in red green and purple. Is there any way to get other colors also I've found nothing in the docs...
http://stackoverflow.com/questions/1861656/iphone-reachability-checking about it during the approval process however we did get a personal phone call to verify that we were giving away items that actually pertained to the movie. According to their usually vague agreement you aren't allowed to have sweepstakes otherwise. I would also think this adheres more strictly to their only use things if you..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication so there's no need for a challenge from the server for authorization. First question 1 Does NSURLConnection have to be set as synchronous to do Basic Auth According to the answer on this post it seems that you can't do Basic Auth if you opt for the async route. 2 Anyone know of any some sample code that illustrates Basic Auth..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code and optionally but recommended a reference attitude object So in your interface definition you add CMMotionManager motionManager CMAttitude referenceAttitude According to the docs you should only create one of these managers per application. I recommend making the motionManager accesible through a singleton but thats some extra..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do sth. According to Apple we have ONLY 30 seconds to perform this Task Else the Application will be terminated UIApplication app UIApplication sharedApplication NSArray oldNotifications.. being executed for a short while. You can see this if you place some NSLog .. into your code. This means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being executed for nearly 30 seconds. This is useful code if you.. . Register for one background process i.e. VoIP . This will cause your app to be restarted after termination. Now write some Task has to be finished code. According to Apple you have some time 5 seconds left to finish tasks. I discovered that this must be CPU time. So that means if you do nothing your app is still being executed..
Return to app behavior after phone call different in native code than UIWebView http://stackoverflow.com/questions/5317783/return-to-app-behavior-after-phone-call-different-in-native-code-than-uiwebview to app behavior after phone call different in native code than UIWebView According to Apple's documentation in order to make phone call from my app I need to implement the following protocols HTML link a href tel 1 408 555 5555 1 408 555 5555..
Get notification when NSOperationQueue finishes all tasks http://stackoverflow.com/questions/1049001/get-notification-when-nsoperationqueue-finishes-all-tasks NSOperationQueue is in a property named queue EDIT iOS 4.0 now has an NSOperationQueue.operationCount property which according to the docs is KVO compliant. This answer will still work in iOS 4.0 however so it's still useful for backwards compatibility...
How to convert time to the timezone of the iPhone device? http://stackoverflow.com/questions/1081647/how-to-convert-time-to-the-timezone-of-the-iphone-device HH mm ss NSDate sourceDate formatter dateFromString @ 2009 07 04 10 23 23 You have to set the formatter's date format according to the format of your mysql date string. If you need a reference for the format string syntax see Unicode Date Format Patterns..
How to stop UITextView from scrolling up when entering it http://stackoverflow.com/questions/1178010/how-to-stop-uitextview-from-scrolling-up-when-entering-it Gero iphone uitableview uitableviewcell uitextview share improve this question This is how UITextView behaves according to Apple's engineer this is intended and UITextView is meant for text that are at least a few lines in height. There is..
UITextField: move view when keyboard appears http://stackoverflow.com/questions/1775860/uitextfield-move-view-when-keyboard-appears up. I also added the textFieldDidEndEnditing method which moves the view down again and updates some model objects according to the changed input void textFieldDidEndEditing UITextField textField if textField inputMenge textField inputAlter NSTimeInterval..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari element on a page iphone safari mobile safari share improve this question This seems to be the right thing to do according to the Safari Web Content Guide for iPhone meta name format detection content telephone no If you disable this but still..
Weak linking on iPhone refuses to work http://stackoverflow.com/questions/3002833/weak-linking-on-iphone-refuses-to-work self selector @selector irrelevantCallbackName name UIApplicationDidEnterBackgroundNotification object nil Now according to everything Apple's ever said if the relevant APIs are weakly linked that will work fine because the dynamic linker will..
Objective-c iPhone percent encode a string? http://stackoverflow.com/questions/3423545/objective-c-iphone-percent-encode-a-string to properly encode a string. It will percent encoding everything EXCEPT a zA Z0 9. _~ and will also encode spaces as according to this specification . It will also properly handle encoding unicode characters. NSString URLEncodedString_ch NSMutableString..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices registered with the server using some sort of polling system. I thought to use Apple's Push services but apparently according to the comments this is not a workable system. Is there anything fancy that I need to be thinking about I have looked at..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable improve this question The @synthesize directive tells the compiler to generate accessors for your member variables according to the specifications given in the @property directive in your .h file. I.e. if you specify retain the setter will retain..
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 Detail view of a tweet user etc Replies UITableViewController ... This seems to work ^1 but appears to be unsupported according to the SDK documentation for pushViewController animated emphasis added viewController The view controller that is pushed..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare Obviously the second array is similar to the newly measured and the first is not. Let's compute the cost matrices according to this paper subsection 2.1 D i j Dist i j MIN D i 1 j D i j 1 D i 1 j 1 Here D i j is the i j element of the cost matrix..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c crashing because you've freed memory they were using. Assuming everyone is playing along and retaining releasing according to the rules when one piece of code retains and then releases the object any other piece of code also referencing the object..
Change Default Scrolling Behavior of UITableView Section Header http://stackoverflow.com/questions/664781/change-default-scrolling-behavior-of-uitableview-section-header cocoa touch uitableview share improve this question The way I solved this problem is to adjust the contentOffset according to the contentInset in the UITableViewControllerDelegate extends UIScrollViewDelegate like this void scrollViewDidScroll..
program access to iPhone volume buttons http://stackoverflow.com/questions/772832/program-access-to-iphone-volume-buttons prepared to play but not playing player prepareToPlay . This seems to take care of adjusting the app's volume according to the rocker buttons. There's no other published way currently to handle this. PLEASE READ THE ABOVE NOTE Yes Use the MPVolumeView..
Google plus api for posting on wall like facebook http://stackoverflow.com/questions/7857812/google-plus-api-for-posting-on-wall-like-facebook it turns out there are only a limited number of api's available for google developers and that also only as GET calls according to the developer of google page my question will not get any definite answers as google is in the process of creating new..
iPhone hide Navigation Bar only on first page http://stackoverflow.com/questions/845583/iphone-hide-navigation-bar-only-on-first-page also that these are not delegate methods you are overriding UIViewController 's implementation of these methods and according to the documentation you must call the super's implementation somewhere in your implementation . share improve this answer..
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c cardId viewedCardsArray addObject cardIdObject cardIdObject release So this code executes and does not seem to leak according to the Leaks performance tool . However when stepping through the code at no point does CardIdObject appear in viewedCardsArray..
http://stackoverflow.com/questions/856019/localize-currency-for-iphone is definitely the way to go You can set a NSLocale on the NSNumberFormatter the formatter will automatically behave according to that locale. The default locale for a number formatter is always the currency for the users selected region format. NSDecimalNumber.. NSNumberFormatterCurrencyStyle NSLog @ @ currencyFormatter stringFromNumber someAmount This will log the amount '5.00' according to the users default region format. If you want to alter the currency you can set currencyFormatter setLocale aLocale ..
Transforming a rectangle image into a quadrilateral using a CATransform3D http://stackoverflow.com/questions/9470493/transforming-a-rectangle-image-into-a-quadrilateral-using-a-catransform3d want to transform this image so that it is fits the quadrilateral Q. Photoshop calls this transformation Distort. But according to the source of this quadrilateral the perspective of the image moving in space it is in fact the combination of a scale..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color is available in red green and purple. Is there any way to get other colors..
What does the Tiler Utilization statistic mean in the iPhone OpenGL ES instrument? http://stackoverflow.com/questions/1287811/what-does-the-tiler-utilization-statistic-mean-in-the-iphone-opengl-es-instrumen No matter what I can't seem to push my application above 320 000 triangles s on an iPhone 3G running the 3.0 OS. According to this benchmark I should be able to hit 687 000 triangles s on this hardware with the smooth shading I'm using. In my..
NSMutableURLRequest timeout interval not taken into consideration for POST requests http://stackoverflow.com/questions/1466389/nsmutableurlrequest-timeout-interval-not-taken-into-consideration-for-post-reque request withDelegate delegate ' iphone objective c post nsurlconnection share improve this question According to a post on the Apple developer forum the minimum timeout interval for POST is 240 seconds. Any timeout interval shorter..
Keeping a UIButton selected after a touch http://stackoverflow.com/questions/1785008/keeping-a-uibutton-selected-after-a-touch to address the code you posted...you need to set your background images for the full UIControl state that you're in. According to your code snippet this control state would be disabled selected highlighted for the duration of the network operation...
http://stackoverflow.com/questions/1861656/iphone-reachability-checking we did get a personal phone call to verify that we were giving away items that actually pertained to the movie. According to their usually vague agreement you aren't allowed to have sweepstakes otherwise. I would also think this adheres more..
NSURLConnection and Basic HTTP Authentication http://stackoverflow.com/questions/1973325/nsurlconnection-and-basic-http-authentication the server for authorization. First question 1 Does NSURLConnection have to be set as synchronous to do Basic Auth According to the answer on this post it seems that you can't do Basic Auth if you opt for the async route. 2 Anyone know of any some..
How to accommodate for the iPhone 4 screen resolution? http://stackoverflow.com/questions/2992360/how-to-accommodate-for-the-iphone-4-screen-resolution to accommodate for the iPhone 4 screen resolution This is a programming question Read on before you vote to close According to Apple the iPhone 4 has a new and better screen resolution 3.5 inch diagonal widescreen Multi Touch display 960 by 640..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code attitude object So in your interface definition you add CMMotionManager motionManager CMAttitude referenceAttitude According to the docs you should only create one of these managers per application. I recommend making the motionManager accesible..
Accessing iPhone WiFi Information via SDK http://stackoverflow.com/questions/351954/accessing-iphone-wifi-information-via-sdk there's no supported way to do this atm. EDIT Chris mentioned WiFinder which prompted me to do a little more digging. According to the WiFinder author's blog he used methods from the private Apple80211.framework. The framework mentioned in the above..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events execution this Handler will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do sth. According to Apple we have ONLY 30 seconds to perform this Task Else the Application will be terminated UIApplication app UIApplication.. see this if you place some NSLog .. into your code. This means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being executed for nearly.. i.e. VoIP . This will cause your app to be restarted after termination. Now write some Task has to be finished code. According to Apple you have some time 5 seconds left to finish tasks. I discovered that this must be CPU time. So that means if you..
Return to app behavior after phone call different in native code than UIWebView http://stackoverflow.com/questions/5317783/return-to-app-behavior-after-phone-call-different-in-native-code-than-uiwebview to app behavior after phone call different in native code than UIWebView According to Apple's documentation in order to make phone call from my app I need to implement the following protocols HTML link a..
Am I abusing UIViewController Subclassing? http://stackoverflow.com/questions/5691226/am-i-abusing-uiviewcontroller-subclassing app I came across what may be a gross misunderstanding I hold about the intended use of UIViewController subclasses. According to the following post viewWillAppear does not run when using addSubView and the link to this blog post http blog.carbonfive.com..
Memory limit and iOS memory allocation in iphone SDK? http://stackoverflow.com/questions/6044147/memory-limit-and-ios-memory-allocation-in-iphone-sdk to alloc malloc new etc. . Otherwise they are allocated contiguously from the same call to malloc ex. new float 30 . According to Apple your app risks being shut down for memory usage when you use more than 20mb of ram. In practice however you can..
Detecting iPhone/iPod Touch Accessories http://stackoverflow.com/questions/667196/detecting-iphone-ipod-touch-accessories propertySize micConnected self updateMicStatus micConnected user created method According to the docs for Audio Session Services this should be used rather than using the device model iPhone vs. iPod Touch to determine..
How do I get the CoreData Debug argument to output to the console? http://stackoverflow.com/questions/822906/how-do-i-get-the-coredata-debug-argument-to-output-to-the-console do I get the CoreData Debug argument to output to the console According to Apple documentation on debugging Core Data it says we should be able to pass an argument to the application which will..
App submission failed due to icon dimensions (0 x 0) http://stackoverflow.com/questions/9174514/app-submission-failed-due-to-icon-dimensions-0-x-0 cannot find the solution. Could anyone knows the problem Thanks iphone ios xcode4.2 share improve this question According to this solution https devforums.apple.com message 612098#612098 make this steps Install ApplicationLoader_2.5.1.dmg Just..
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