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2014/10/15 ¤U¤È 10:07:59
iphone Programming Glossary: effectivelyCore Data could not fullfil fault for object after obtainPermanantIDs http://stackoverflow.com/questions/11321717/core-data-could-not-fullfil-fault-for-object-after-obtainpermanantids should not block the main thread at all while this is happening. So in your save from your lowest level MOC you should effectively have something like this with appropriate error handling of course ... backgroundMoc performBlock ^ backgroundMoc obtainPermanentIDsForObjects..
http://stackoverflow.com/questions/14659563/to-drawrect-or-not-to-drawrect-when-should-one-use-drawrect-core-graphics-vs-su Given my understanding in my answer below could the same performance gains for a table cell possibly be gained by effectively capturing a snapshot bitmap of your cell after your complex UIView render's itself and displaying that while scrolling and..
Change title of MFMailComposeViewController http://stackoverflow.com/questions/1737848/change-title-of-mfmailcomposeviewcontroller line controller viewControllers lastObject navigationItem setTitle @ SomethingElse ... However this implementation effectively relies on undocumented features of MFMailComposeViewController. You're accessing the navigationItem of a private class _MFMailComposeRootViewController..
Retain/release pattern for UIPopoverController, UIActionSheet, and modal view controllers? http://stackoverflow.com/questions/2867709/retain-release-pattern-for-uipopovercontroller-uiactionsheet-and-modal-view-co a retained reference to that child controller until it's been dismissed In other words do the following lines of code effectively transfer ownership or not aPopoverController presentPopoverFromBarButtonItem someButtonItem permittedArrowDirections UIPopoverArrowDirectionAny..
Disabling home button on iPhone/iPad http://stackoverflow.com/questions/2870687/disabling-home-button-on-iphone-ipad and so on. My question is fairly simple is there a way using private APIs to disable the home button The aim is to effectively put an iPad into kiosk mode. iphone ipad share improve this question You can't disable the menu button. This is handled..
iPhone HTML5 App Scrolling Question http://stackoverflow.com/questions/3128196/iphone-html5-app-scrolling-question scrolling and bounce by adding touch event handlers to the document and calling preventDefault on the event. This will effectively disable bounce if your web page completely fits in the viewport. function stopScrolling touchEvent touchEvent.preventDefault..
iPhone SDK 4 AVFoundation - How to use captureStillImageAsynchronouslyFromConnection correctly? http://stackoverflow.com/questions/3847140/iphone-sdk-4-avfoundation-how-to-use-capturestillimageasynchronouslyfromconnec image out . AVCaptureStillImageOutput only seems to work sensibly with AVCaptureSessionPresetPhoto otherwise you effectively get JPEG encoded video frames. Might as well use higher quality BGRA frames incidentally the camera's native output appears..
Xcode — get force_load to work with relative paths http://stackoverflow.com/questions/4787279/xcode-get-force-load-to-work-with-relative-paths this leads to a linker error if there are symbol conflicts among libraries. The solution is to use force_load which effectively lets you use all_load on some libraries but not on others. However this in turn leads to a new problem at least for me...
Is it good practice to use AppDelegate for data manipulation and Handling? http://stackoverflow.com/questions/5155437/is-it-good-practice-to-use-appdelegate-for-data-manipulation-and-handling modify interfaces in lots of places in order to pass in the DatabaseManager. And yet another alternative would be to effectively make your DatabaseManager itself be a 'singleton' whereby an instance of it is accessed via a class method on the class...
what happens to NSLog info when running on a device? http://stackoverflow.com/questions/5318342/what-happens-to-nslog-info-when-running-on-a-device a device Where does the text go Does it get saved Is it therefore a big overhead when running on a device or does it effectively get sent to null iphone ios nslog share improve this question Your device will continue logging even when it's not..
Transitioning from OpenGL ES 1.1 to OpenGL ES 2.0 http://stackoverflow.com/questions/5866256/transitioning-from-opengl-es-1-1-to-opengl-es-2-0 I replaced the glRotate etc. functions a long while ago using the Core Animation helper functions to manipulate what effectively is a model view matrix. This made it trivial to move that code across to OpenGL ES 2.0. Jeff LaMarche also has an extremely..
How to read objective-c stack traces http://stackoverflow.com/questions/6462214/how-to-read-objective-c-stack-traces really because it called the signal handler and was handled by that which is still a boom but the signal handler has effectively destroyed additional forensic evidence. The trickzy comment references that an optimizing compiler against a big pile o'..
how to get distance using Wi-Fi http://stackoverflow.com/questions/684781/how-to-get-distance-using-wi-fi mean keep reading... Given your configuration a single fixed receiver your phone doesn't have to be fixed but it is effectively fixed if you're looking for instantaneous measurements a single fixed base station the access point an omnidirectional antenna..
how to display UIActivityIndicatorView BEFORE rotation begins http://stackoverflow.com/questions/7041261/how-to-display-uiactivityindicatorview-before-rotation-begins a didRotateFrom... method. I recommend reading the Threaded Programming Guide . Edit in response to a comment You can effectively block user interaction by having the willAnimateRotation... method put a non functioning interface on screen such as a view..
How to Require iPad 2 or iPhone 4S in App Store http://stackoverflow.com/questions/7919586/how-to-require-ipad-2-or-iphone-4s-in-app-store
Why is object not dealloc'ed when using ARC + NSZombieEnabled http://stackoverflow.com/questions/8408071/why-is-object-not-dealloced-when-using-arc-nszombieenabled nil when secondaryViewController is dealloc'ed it will be dealloc'ed. Both of these are not great workaround b c they effectively require you to use ARC but code as if you are not using ARC e.g. nil iVars explicitly in dealloc . A specific solution also..
Create new app from Business account [duplicate] http://stackoverflow.com/questions/8434865/create-new-app-from-business-account
http://stackoverflow.com/questions/885198/beginning-iphone-development this question I've found it very fruitful to go through the Stanford iPhone Programming Class CS 193P . You can effectively audit the class for free watching each lecture downloaded from iTunes and follow along with the people taking it for credit..
Secure https encryption for iPhone app to webpage http://stackoverflow.com/questions/9181186/secure-https-encryption-for-iphone-app-to-webpage an iPhone app that will house a single web view to a web page say http www.myapp.com webview I would like the app to effectively store the credentials required for authentication at the website ie only someone who has bought the app can view this page..
http://stackoverflow.com/questions/986392/programmatically-force-a-uiscrollview-to-stop-scrolling-for-sharing-a-table-vie control while the table is still moving i.e. decelerating the table view continues to decelerate from the old offset effectively overriding my contentOffset assignment. Is there a way to force the table view to stop scrolling decelerating when I set..
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