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2014/10/15 ¤U¤È 10:11:46
iphone Programming Glossary: mymethodObjective C release, autorelease, and data types http://stackoverflow.com/questions/1219575/objective-c-release-autorelease-and-data-types array around then that method is responsible for sending retain and eventually release to the object. For example void myMethod NSArray removals NSArray new ... someObject someOtherMethod removals removals release If you created the array in an init.. eventually. In this case you manually call autorelease on the object before you return it. For example NSArray myMethod NSArray removals NSArray new ... return removals autorelease When you create the array via arrayWithCapacity you aren't..
http://stackoverflow.com/questions/1349740/arguments-in-selector in @selector Is there any way that I can pass arguments in selector example I have this method void myMethod NSString value1 setValue2 NSString value2 and I need to call this function through a selector passing two arguments. NSTimer.. An NSInvocation allows you to set the target the selector and the arguments that you pass in SEL selector @selector myMethod setValue2 NSMethodSignature signature MyObject instanceMethodSignatureForSelector selector NSInvocation invocation NSInvocation.. 3 NSTimer scheduledTimerWithTimeInterval 0.1 invocation invocation repeats YES Where MyObject is the class that myMethod setValue2 is declared and implemented on instanceMethodSignatureForSelector is a convenience function declared on NSObject..
Best Practices for Error Logging and/or reporting for iPhone http://stackoverflow.com/questions/1667994/best-practices-for-error-logging-and-or-reporting-for-iphone identify which lines of trace are important and can filter out lower level detail if they want to. Example code void myMethod NSObject xiObj TRC_ENTRY TRC_DBG @ Boring low level stuff TRC_NRM @ Higher level trace for more important info TRC_ALT @.. coding bug or unexpected condition TRC_EXIT Example trace output 2009 09 11 14 22 48.051 MyApp 3122 207 ENTRY MyClass myMethod 2009 09 11 14 22 48.063 MyApp 3122 207 DEBUG MyClass myMethod Boring low level stuff 2009 09 11 14 22 48.063 MyApp 3122.. 2009 09 11 14 22 48.051 MyApp 3122 207 ENTRY MyClass myMethod 2009 09 11 14 22 48.063 MyApp 3122 207 DEBUG MyClass myMethod Boring low level stuff 2009 09 11 14 22 48.063 MyApp 3122 207 NORMAL MyClass myMethod Higher level trace for more important..
Using [self method] or @selector(method)? http://stackoverflow.com/questions/2674827/using-self-method-or-selectormethod
SEL performSelector and arguments http://stackoverflow.com/questions/2716143/sel-performselector-and-arguments performSelector withObject requires an object argument you will have to write a wrapper in parent's class like void myMethodForNumber NSNumber number self myMethod number intValue to unbox the NSNumber . If you really want to invoke a method that.. an object argument you will have to write a wrapper in parent's class like void myMethodForNumber NSNumber number self myMethod number intValue to unbox the NSNumber . If you really want to invoke a method that takes non object arguments directly for..
how to get selected text from uitextfield in iphone? http://stackoverflow.com/questions/5230297/how-to-get-selected-text-from-uitextfield-in-iphone @selector mySelectionDidChange class_addMethod inputDelegateClass mySelector IMP mySelectionDidChange v@ @ Method myMethod class_getInstanceMethod inputDelegateClass mySelector Method uiKitMethod class_getInstanceMethod inputDelegateClass @selector.. class_getInstanceMethod inputDelegateClass @selector selectionDidChange method_exchangeImplementations uiKitMethod myMethod swizzled swizzle NSLog @ swizzled i method_getImplementation uiKitMethod IMP venmo_selectionDidChange @end UIKIT_STATIC_INLINE..
iPhone/iPad App Code Obfuscation - Is it Possible? Worth it? http://stackoverflow.com/questions/5556849/iphone-ipad-app-code-obfuscation-is-it-possible-worth-it to be an obfuscator What you can do is this trick say you have a header like this @interface MyClass NSObject void myMethod You could do a cheap obfuscation like this #ifndef DEBUG #define MyClass aqwe #define myMethod oikl #endif @interface MyClass.. MyClass NSObject void myMethod You could do a cheap obfuscation like this #ifndef DEBUG #define MyClass aqwe #define myMethod oikl #endif @interface MyClass NSObject void myMethod This way you can still use meaningful symbols in your source but the.. obfuscation like this #ifndef DEBUG #define MyClass aqwe #define myMethod oikl #endif @interface MyClass NSObject void myMethod This way you can still use meaningful symbols in your source but the compiler would turn it into garbage when not compiling..
How to react to applicationWillResignActive from anywhere? http://stackoverflow.com/questions/589598/how-to-react-to-applicationwillresignactive-from-anywhere this question Looks like you are looking for this code. void applicationWillResign NSLog @ About to lose focus void myMethod NSNotificationCenter defaultCenter addObserver self selector @selector applicationWillResign name UIApplicationWillResignActiveNotification..
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