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2014/10/15 ¤U¤È 10:11:46
iphone Programming Glossary: myobjectObjective-C: When to call self.myObject vs just calling myObject http://stackoverflow.com/questions/1332389/objective-c-when-to-call-self-myobject-vs-just-calling-myobject C When to call self.myObject vs just calling myObject This little bit of syntax has been a bit of a confusion for me in Objective C. When should I call.. C When to call self.myObject vs just calling myObject This little bit of syntax has been a bit of a confusion for me in Objective C. When should I call self.myObject vs just.. myObject This little bit of syntax has been a bit of a confusion for me in Objective C. When should I call self.myObject vs just calling myObject It seems redundant however they are not interchangeable. Would someone please enlighten me iphone..
Does UIActivityIndicator require manual threading on iPhone http://stackoverflow.com/questions/441345/does-uiactivityindicator-require-manual-threading-on-iphone but its quite easy to do as paraphrased from user 'eskimo1' IBAction syncOnThreadAction id sender self willStartJob id myObject MyObjectClass createNewObject self performSelectorInBackground @selector inThreadStartDoJob withObject myObject void inThreadStartDoJob.. id myObject MyObjectClass createNewObject self performSelectorInBackground @selector inThreadStartDoJob withObject myObject void inThreadStartDoJob id theJobToDo NSAutoreleasePool pool NSString status pool NSAutoreleasePool alloc init assert pool..
iPhone Development - Simulate Memory Warning http://stackoverflow.com/questions/491075/iphone-development-simulate-memory-warning takes this decision and how Can you please confirm. Plus I was getting an error following this approach but adding myObject nil after releasing myObject in dealloc method of controller class fixed the issue. Thanks. iphone memory warnings simulator.. Can you please confirm. Plus I was getting an error following this approach but adding myObject nil after releasing myObject in dealloc method of controller class fixed the issue. Thanks. iphone memory warnings simulator share improve this question..
How do I verify reference count in ARC mode? http://stackoverflow.com/questions/8863269/how-do-i-verify-reference-count-in-arc-mode with Objective C objects even under ARC NSLog @ Retain count is ld CFGetRetainCount __bridge CFTypeRef myObject This is not particularly useful for debugging though for reasons amply described elsewhere . If you need to understand where..
Objective-C ARC: strong vs retain and weak vs assign http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign example in the section on property attributes . The following declaration is a synonym for @property retain MyClass myObject @property strong MyClass myObject So strong is the same as retain in a property declaration. For ARC projects I would use.. attributes . The following declaration is a synonym for @property retain MyClass myObject @property strong MyClass myObject So strong is the same as retain in a property declaration. For ARC projects I would use strong instead of retain I would..
objective-c interface - declaring variable vs just property? http://stackoverflow.com/questions/9065417/objective-c-interface-declaring-variable-vs-just-property declaring variable vs just property In Obj c when declaring a variable within @interface @interface NSObject MyObject myObject @property unsafe nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe nonatomic.. when declaring a variable within @interface @interface NSObject MyObject myObject @property unsafe nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe nonatomic MyObject myObject @end Not declare any.. nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe nonatomic MyObject myObject @end Not declare any var here Regards Christian iphone objective c share improve this question @property defines an..
How do I know whether the compiler has ARC support enabled? http://stackoverflow.com/questions/9462372/how-do-i-know-whether-the-compiler-has-arc-support-enabled compiler has ARC support enabled I need to write a lib in my iOS app. The statement should be pre process define as myObject ... #if ARC do nothing #else myObject release #endif or run time process as if ARC do nothing else myObject release How.. need to write a lib in my iOS app. The statement should be pre process define as myObject ... #if ARC do nothing #else myObject release #endif or run time process as if ARC do nothing else myObject release How can I do Please help me Thank you. iphone.. define as myObject ... #if ARC do nothing #else myObject release #endif or run time process as if ARC do nothing else myObject release How can I do Please help me Thank you. iphone ios xcode automatic ref counting share improve this question ..
Saving ALAsset URL in NSUserDefaults http://stackoverflow.com/questions/11554399/saving-alasset-url-in-nsuserdefaults instead e.g. void saveMyUrlsWithLabels NSMutableArray objs NSMutableArray arrayWithCapacity self.myObjects.count for MyObject obj in self.myObjects objs addObject NSDictionary dictionaryWithKeys @ url @ label forObjects obj.url.absoluteString obj.userSpecifiedLabel..
http://stackoverflow.com/questions/1349740/arguments-in-selector the selector and the arguments that you pass in SEL selector @selector myMethod setValue2 NSMethodSignature signature MyObject instanceMethodSignatureForSelector selector NSInvocation invocation NSInvocation invocationWithMethodSignature signature.. setArgument str2 atIndex 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..
How to store custom objects in NSUserDefaults http://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults decoder decodeObjectForKey @ subcategory return self Reading and writing from NSUserDefaults void saveCustomObject MyObject object key NSString key NSData encodedObject NSKeyedArchiver archivedDataWithRootObject object NSUserDefaults defaults NSUserDefaults.. defaults NSUserDefaults standardUserDefaults defaults setObject myEncodedObject forKey key defaults synchronize MyObject loadCustomObjectWithKey NSString key NSUserDefaults defaults NSUserDefaults standardUserDefaults NSData encodedObject defaults.. key NSUserDefaults defaults NSUserDefaults standardUserDefaults NSData encodedObject defaults objectForKey key MyObject object NSKeyedUnarchiver unarchiveObjectWithData encodedObject return object Code shamelessly borrowed from saving class..
iPhone: how to use performSelector:onThread:withObject:waitUntilDone: method? http://stackoverflow.com/questions/2584394/iphone-how-to-use-performselectoronthreadwithobjectwaituntildone-method onThread withObject waitUntilDone method with a thread that I' instantiated for this. My code @interface MyObject NSObject NSThread _myThread @property nonatomic retain NSThread myThread @end @implementation MyObject @synthesize myThread.. code @interface MyObject NSObject NSThread _myThread @property nonatomic retain NSThread myThread @end @implementation MyObject @synthesize myThread _myThread NSThread myThread if _myThread nil NSThread myThreadTemp NSThread alloc init myThreadTemp.. privateInit onThread self myThread withObject nil waitUntilDone NO return self void privateInit id object NSLog @ MyObject privateInit start void dealloc _myThread release _myThread nil super dealloc @end MyObject privateInit start is never printed...
http://stackoverflow.com/questions/4089238/implementing-nscopying your object must respond to the copyWithZone selector. Here ™s how you declare that you conform to it @interface MyObject NSObject NSCopying Then in your object ™s implementation your .m file id copyWithZone NSZone zone Copying code here. What..
release Vs nil — Best Practice http://stackoverflow.com/questions/4220815/release-vs-nil-best-practice pointer to released memory Other notes When you assign to a property declared to retain in your .h @property retain MyObject foo in your .m self.foo bar bar is retained whatever foo previously pointed at is released it will release what it was previously..
Why does this create a memory leak (iPhone)? http://stackoverflow.com/questions/612986/why-does-this-create-a-memory-leak-iphone does this create a memory leak iPhone creates memory leak self.editMyObject MyObject alloc init does not create memory leak MyObject temp MyObject alloc init self.editMyObject temp temp release The.. does this create a memory leak iPhone creates memory leak self.editMyObject MyObject alloc init does not create memory leak MyObject temp MyObject alloc init self.editMyObject temp temp release The first line.. create a memory leak iPhone creates memory leak self.editMyObject MyObject alloc init does not create memory leak MyObject temp MyObject alloc init self.editMyObject temp temp release The first line of code creates a memory leak even if you do..
objective-c interface - declaring variable vs just property? http://stackoverflow.com/questions/9065417/objective-c-interface-declaring-variable-vs-just-property declaring variable vs just property In Obj c when declaring a variable within @interface @interface NSObject MyObject myObject @property unsafe nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe.. In Obj c when declaring a variable within @interface @interface NSObject MyObject myObject @property unsafe nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe nonatomic MyObject myObject @end Not declare.. unsafe nonatomic MyObject myObject Vs. Only declare it as a property @interface NSObject @property unsafe nonatomic MyObject myObject @end Not declare any var here Regards Christian iphone objective c share improve this question @property defines..
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