¡@
2014/10/15 ¤U¤È 10:08:34
iphone Programming Glossary: exceptionsHow to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw was the answer from the brad larson on this SO question If you add two breakpoints you should be able to debug these exceptions. To do this go to Run Show Breakpoints and create two global breakpoints I do them globally because they are so useful in.. . Now if you start debugging your application with breakpoints enabled it should break on the throw of these exceptions. You should then be able to see the chain of events that led to the exception within the debugger. now in this answer i..
Ignore certain exceptions when using Xcode's All Exceptions breakpoint http://stackoverflow.com/questions/14370632/ignore-certain-exceptions-when-using-xcodes-all-exceptions-breakpoint certain exceptions when using Xcode's All Exceptions breakpoint I have an All Exceptions breakpoint configured in Xcode Sometimes Xcode will.. backtrace but the program continues on as if nothing happened if you click Continue. How can I ignore these normal exceptions but still have the debugger stop on exceptions in my own code I understand that this happens because Core Data internally.. nothing happened if you click Continue. How can I ignore these normal exceptions but still have the debugger stop on exceptions in my own code I understand that this happens because Core Data internally throws and catches exceptions and that Xcode..
How can my iPhone Objective-C code get notified of Javascript errors in a UIWebView? http://stackoverflow.com/questions/193119/how-can-my-iphone-objective-c-code-get-notified-of-javascript-errors-in-a-uiwebv a UIWebView I need to have my iPhone Objective C code catch Javascript errors in a UIWebView. That includes uncaught exceptions syntax errors when loading files undefined variable references etc. This is for a development environment so it doesn't..
How to Manually Symbolicate iOS Crash to View Crash Logs http://stackoverflow.com/questions/3832900/how-to-manually-symbolicate-ios-crash-to-view-crash-logs question EDIT XCode 4.3 You will want to follow the same steps as outlined in the original answer below with a few exceptions. First you need to fix the Xcode path. Open a terminal and run usr bin xcode select print path If it displays Developer..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll callbacks called while you are searching and try to incorrectly use the filtered version of your FRC and you will see exceptions thrown about incorrect number of sections or rows in sections. Here is what I did I have two FRCs available as properties..
Use Key Value Observing to get a KVO callback on a UIView's frame http://stackoverflow.com/questions/4874288/use-key-value-observing-to-get-a-kvo-callback-on-a-uiviews-frame KVO you can still implement it in the custom objects of your application including custom views. There are a few exceptions to this rule like NSOperationQueue's operations property but they have to be explicitly documented. Even if using KVO on..
NSMutableString as retain/copy http://stackoverflow.com/questions/4995254/nsmutablestring-as-retain-copy e.g. in dealloc in non garbage collected environments. immutable strings are still reference counted. there are exceptions to this notably CF NS String literals exist for the program's duration you can use CF APIs to create strings which are never.. stringWithFormat @ f seconds seconds ...some mutations... self.str1 s @end of course there will be a few exceptions to this where you will need a mutable ivar but it's best to use immutable ivars where possible and where in doubt rather..
How to create subscript characters that's not in Unicode in iOS http://stackoverflow.com/questions/5080175/how-to-create-subscript-characters-thats-not-in-unicode-in-ios cocoa touch ios nsstring share improve this question Subscript and superscript are not character traits. With few exceptions e. g. ² ³ ª this is the way regular characters are rendered in a smaller font and above below the regular characters' baseline...
When does an associated object get released? http://stackoverflow.com/questions/6039309/when-does-an-associated-object-get-released its too late to remove itself as a KVO observer of object A. I know this because I'm getting NSKVODeallocateBreak exceptions followed by EXEC_BAD_ACCESS crashes in object B's dealloc. Does anyone know why object B is deallocated after object A with..
Jquery-ui sortable doesn't work on touch devices based on Android or IOS http://stackoverflow.com/questions/6745098/jquery-ui-sortable-doesnt-work-on-touch-devices-based-on-android-or-ios that _touchEnd events were not correctly resetting an internal flag mouseHandled in mouse.ui and this was causing exceptions. Both of these problems should now be fixed with this code. Content Type text javascript A bridge between iPad and iPhone..
Exception Types in iOS crash logs http://stackoverflow.com/questions/7446655/exception-types-in-ios-crash-logs object. No. A SIGSEGV is a segmentation fault meaning you are trying to access an invalid memory address. Those exceptions in fact they are signals are not related to Objective C but C. So you can get such an exception without Objective C objects...
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons should be very close in time to the termination of your program. If you're catching a significant number of ObjC exceptions you're using them incorrectly. This is fixable using fobjc arc exceptions but it incurs the penalties discussed below ARC.. you're catching a significant number of ObjC exceptions you're using them incorrectly. This is fixable using fobjc arc exceptions but it incurs the penalties discussed below ARC will not leak memory during ObjC or C exception throws in ObjC code but..
Ignore certain exceptions when using Xcode's All Exceptions breakpoint http://stackoverflow.com/questions/14370632/ignore-certain-exceptions-when-using-xcodes-all-exceptions-breakpoint certain exceptions when using Xcode's All Exceptions breakpoint I have an All Exceptions breakpoint configured in Xcode Sometimes Xcode will stop on a line like managedObjectContext.. certain exceptions when using Xcode's All Exceptions breakpoint I have an All Exceptions breakpoint configured in Xcode Sometimes Xcode will stop on a line like managedObjectContext save error with the following.. iphone ios xcode share improve this question For Core Data exceptions what I typically do is remove the All Exceptions breakpoint from Xcode and instead Add a Symbolic Breakpoint on objc_exception_throw Set a Condition on the Breakpoint to..
Background threads consuming 100% CPU on iPhone 3GS causes latent main thread http://stackoverflow.com/questions/1940903/background-threads-consuming-100-cpu-on-iphone-3gs-causes-latent-main-thread achieving acceptable performance I began to realize that the CFNetwork framework was leaking memory occasionally. Exceptions were randomly however rarely being raised inside CFNetwork too I tried everything I could to avoid those problems but nothing..
How do I catch global exceptions? http://stackoverflow.com/questions/2826351/how-do-i-catch-global-exceptions
unrecognized selector sent to instance http://stackoverflow.com/questions/3645213/unrecognized-selector-sent-to-instance objective c debugging uitableview core data share improve this question In Xcode 3 enable Run Stop on Objective C Exceptions run your program in Debug. Ultimately what is happening is an objc object is requested to perform a message which it does..
http://stackoverflow.com/questions/6477416/iphone-try-catch-question
http://stackoverflow.com/questions/6906930/avaudiorecorder-throws-erros
http://stackoverflow.com/questions/7779851/avfoundation-ios-5
|