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2014/10/15 ¤U¤Č 10:08:36
iphone Programming Glossary: executesNSManagedObjectContext performBlockAndWait: doesn't execute on background thread? http://stackoverflow.com/questions/11831946/nsmanagedobjectcontext-performblockandwait-doesnt-execute-on-background-thread event processPendingChanges . performBlockAndWait does NOT use the internal queue. It is a synchronous operation that executes in the context of the calling thread. Of course it will wait until the current operations on the queue have been executed..
UIDocumentInteractionController no longer works in iOS6 http://stackoverflow.com/questions/12631466/uidocumentinteractioncontroller-no-longer-works-in-ios6 shares with instagram built for iOS5 and now in iOS6 sharing no longer works although canOpenURL returns true and code executes. The images are saved to the documents folder of the application with a .igo extension. This is passed to instagram with..
Difference between NSOperation and NSInvocationOperation? http://stackoverflow.com/questions/12908886/difference-between-nsoperation-and-nsinvocationoperation 1. Difference Between NSoperation and NSInvocationOperation An NSoperation object is a single shot object ”that is it executes its task once and cannot be used to execute it again. The NSInvocationOperation class is a concrete subclass of NSOperation.. execute operations by adding them to an operation queue an instance of the NSOperationQueue class . An operation queue executes its operations either directly by running them on secondary threads or indirectly using the libdispatch library also known..
iphone MPMoviePlayerViewController CGContext Errors http://stackoverflow.com/questions/13203336/iphone-mpmovieplayerviewcontroller-cgcontext-errors play playerController nil When I run the program the movie will play however when the code executes the line playerController MPMoviePlayerViewController alloc initWithContentURL url the following errors occur Error CGContextSaveGState..
NSOperationQueue and concurrent vs non-concurrent http://stackoverflow.com/questions/1646795/nsoperationqueue-and-concurrent-vs-non-concurrent do not necessarily refer to the side by side execution of threads. Instead a non concurrent operation is one that executes using the environment that is provided for it while a concurrent operation is responsible for setting up its own execution.. correct iphone objective c cocoa cocoa touch multithreading share improve this question NSOperationQueue always executes operations concurrently while taking dependencies into account. A non concurrent operation requires a separate thread in..
Fetched Properties v Relationships (Core Data - iPhone) http://stackoverflow.com/questions/1737415/fetched-properties-v-relationships-core-data-iphone
What is Delegate and Delegate Methods http://stackoverflow.com/questions/1788032/what-is-delegate-and-delegate-methods Hey the user tapped Row 4 in Section 0. Do something. The delegate object finds the didSelectRowAtIndexPath method and executes the code inside. There are lots of Delegate methods for many different objects. For instance the Text Field object can't..
Periodic iOS background location updates http://stackoverflow.com/questions/19042894/periodic-ios-background-location-updates the backgroundTimeRemaining decrements from 180 seconds to zero while logging location and then the expiration handler executes and no further location updates are generated. How do I modify the above code in order to receive periodic location updates..
iPad touch detected only in 320x480 region http://stackoverflow.com/questions/2653761/ipad-touch-detected-only-in-320x480-region region. Any ideas how can I solve that Thanks EDIT Here are the results when code for fetching superview bounds executes CGFloat wdth self.view.superview.bounds.size.width NSLog @ d wdth CGFloat hgth self.view.superview.bounds.size.height NSLog..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events 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..
iphone UISearchBar Done button always enabled http://stackoverflow.com/questions/4728338/iphone-uisearchbar-done-button-always-enabled else NSLog @ typed void searchBarTextDidBeginEditing UISearchBar theSearchBar NSLog @ began this executes as soon as i tap on the searchbar so I'm guessing this is the place to put whatever solution is available iphone keyboard..
http://stackoverflow.com/questions/5522079/mbprogresshud-not-showing Loading Workbench nil HUD.detailsLabelText NSLocalizedString @ please wait nil Show the HUD while the provided method executes in a new thread HUD showWhileExecuting @selector loadWorkbench onTarget self withObject nil animated YES Since you are setting..
Why is autorelease especially dangerous/expensive for iPhone applications? http://stackoverflow.com/questions/613583/why-is-autorelease-especially-dangerous-expensive-for-iphone-applications Apple Developer added as a side note near the bottom of the page iPhone OS Note Because on iPhone OS an application executes in a more memory constrained environment the use of autorelease pools is discouraged in methods or blocks of code for example..
UIWebview gets stuck with the following message in console http://stackoverflow.com/questions/6489601/uiwebview-gets-stuck-with-the-following-message-in-console state the following JavaScript execution time is limited to 10 seconds for each top level entry point. If your script executes for more than 10 seconds the web view stops executing the script And this seems to tie in with the error message you are..
Make subview rotate too when device is rotated iPhone/iPad http://stackoverflow.com/questions/6654741/make-subview-rotate-too-when-device-is-rotated-iphone-ipad button. The UIView that I created in interface builder is connected with the IBOutlet named ViewMain and the button executes the following method and what that method does is that it places the view from another nib file in the UIView controller..
How to log all methods used in iOS app http://stackoverflow.com/questions/7270502/how-to-log-all-methods-used-in-ios-app
Having trouble adding objects to NSMutableArray in Objective C http://stackoverflow.com/questions/851926/having-trouble-adding-objects-to-nsmutablearray-in-objective-c 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..
switch between uiviews with buttons and not uinavigation controllers http://stackoverflow.com/questions/959023/switch-between-uiviews-with-buttons-and-not-uinavigation-controllers self.view removeFromSuperview self.view insertSubview phoneNumberViewController1.view atIndex 0 When this code executes the whole view just goes blank. If I omit the removefromsuperview portion then the view disappears behind my button but..
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