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2014/10/15 ¤U¤È 10:11:39
iphone Programming Glossary: myclassDeclaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec a lot of choices. Instance variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation.. variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation but not.. from other classes. To do that you had to declare accessor methods that look something like this MyClass.h @interface MyClass NSObject int myVar int myVar void setMyVar int newVar @end MyClass.m @implementation..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c implement its delegate's windowDidMove method you could create a class like this @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass.. void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate.. ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize.. MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar Now I thought the entire premise behind this strategy is so that one can easily..
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 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... . 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..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec Before modern Objective C in old Obj C 2.0 you didn't have a lot of choices. Instance variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation but not from other classes. To do that you had.. C in old Obj C 2.0 you didn't have a lot of choices. Instance variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation but not from other classes. To do that you had to declare accessor methods.. to access these variables only in your implementation but not from other classes. To do that you had to declare accessor methods that look something like this MyClass.h @interface MyClass NSObject int myVar int myVar void setMyVar int newVar @end MyClass.m @implementation MyClass int myVar return myVar void setMyVar int newVar..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c For example suppose you have an NSWindow. If you'd like to implement its delegate's windowDidMove method you could create a class like this @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass.. method you could create a class like this @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to.. MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable variable I'm trying to understand how strategies some folks use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar Now I thought the entire premise behind.. vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar Now I thought the entire premise behind this strategy is so that one can easily distinguish the difference between an ivar and property...
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 From the Transitioning to ARC Release Notes the 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 strong instead of retain I would.. Notes the 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 strong instead of retain I would use assign for C primitive properties..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec 2.0 you didn't have a lot of choices. Instance variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation but not.. a lot of choices. Instance variables used to be declared in the header between the curly brackets MyClass.h @interface MyClass NSObject int myVar @end You were able to access these variables only in your implementation but not from other classes... but not from other classes. To do that you had to declare accessor methods that look something like this MyClass.h @interface MyClass NSObject int myVar int myVar void setMyVar int newVar @end MyClass.m @implementation MyClass int myVar..
SEL performSelector and arguments http://stackoverflow.com/questions/2716143/sel-performselector-and-arguments way to call a selector with some arguments when all you have is a SEL object. I can't seem to find the correct syntax. MyClass init SEL sel owner NSObject parent int i 10 parent performSelector sel i iphone objective c selectors share improve..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c If you'd like to implement its delegate's windowDidMove method you could create a class like this @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the.. @implementation MyClass void windowDidMove NSNotification notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow.. notification ... @end Then you could create an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable strategies some folks use to distinguish instance vars vs. properties. A common pattern is the following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar.. following @interface MyClass NSObject NSString _myVar @property nonatomic retain NSString myVar @end @implementation MyClass @synthesize myVar _myVar Now I thought the entire premise behind this strategy is so that one can easily distinguish the..
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 Notes the 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.. 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 strong instead of retain..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec variable from other classes too using the usual square bracket syntax to send messages call methods OtherClass.m int v myClass myVar assuming myClass is an object of type MyClass. myClass setMyVar v 1 Because manually declaring and implementing every.. too using the usual square bracket syntax to send messages call methods OtherClass.m int v myClass myVar assuming myClass is an object of type MyClass. myClass setMyVar v 1 Because manually declaring and implementing every accessor method was.. syntax to send messages call methods OtherClass.m int v myClass myVar assuming myClass is an object of type MyClass. myClass setMyVar v 1 Because manually declaring and implementing every accessor method was quite annoying @property and @synthesize..
Objective-C/iPhone Memory Management Static Variables http://stackoverflow.com/questions/1606854/objective-c-iphone-memory-management-static-variables So again the question What is the proper way of releasing a static variable MyClass.m #import MyClass.h static MyClass myClass How to properly do memory management @implementation MyClass MyClass sharedMyClass if myClass nil myClass MyClass alloc.. MyClass.h static MyClass myClass How to properly do memory management @implementation MyClass MyClass sharedMyClass if myClass nil myClass MyClass alloc init return myClass @end iphone objective c memory management variables static share improve.. MyClass myClass How to properly do memory management @implementation MyClass MyClass sharedMyClass if myClass nil myClass MyClass alloc init return myClass @end iphone objective c memory management variables static share improve this question..
Correct syntax for Objective-C init method http://stackoverflow.com/questions/4165872/correct-syntax-for-objective-c-init-method object Or are property objects automatically initialized to nil and I don't need to be doing this at all @interface myClass NSObject NSArray myArray @property nonatomic retain NSArray myArray @end @implementation myClass @synthesize myArray id.. at all @interface myClass NSObject NSArray myArray @property nonatomic retain NSArray myArray @end @implementation myClass @synthesize myArray id init if self super init self.myArray nil return self ... iphone objective c ios share improve..
Find/Replace in Xcode using Regular Expression http://stackoverflow.com/questions/4778847/find-replace-in-xcode-using-regular-expression Replace in Xcode using Regular Expression I have the following function calls at several places in my class. myClass doOperationOne myClass doOperationTwo myClass doOperationThree In those lines I want to search for the following myClass.. using Regular Expression I have the following function calls at several places in my class. myClass doOperationOne myClass doOperationTwo myClass doOperationThree In those lines I want to search for the following myClass doOperationOne myClass.. I have the following function calls at several places in my class. myClass doOperationOne myClass doOperationTwo myClass doOperationThree In those lines I want to search for the following myClass doOperationOne myClass doOperationTwo myClass..
How to make a exclusive UITableView list for checkmarks? http://stackoverflow.com/questions/5589316/how-to-make-a-exclusive-uitableview-list-for-checkmarks of the file that code is in before it will run and then declare in the class a couple of instance variables @interface myClass MyCustomCategoryClass currentCategory pointer to the currently checked item NSArray taskCategories pointer to an array of..
Using PLists for Persistence on iPhone http://stackoverflow.com/questions/6885997/using-plists-for-persistence-on-iphone for different types. Hope this helps Edit If your .plist was a member of an important class or similar... Header of myClass NSUserDefaults myPreferences @property nonatomic retain NSUserDefaults myPreferences .m of myClass self.myPreferences NSUserDefaults.. Header of myClass NSUserDefaults myPreferences @property nonatomic retain NSUserDefaults myPreferences .m of myClass self.myPreferences NSUserDefaults standardUserDefaults load our preferences NSUserDefaults standardUserDefaults registerDefaults..
Difference between @interface declaration and @property declaration http://stackoverflow.com/questions/2159725/difference-between-interface-declaration-and-property-declaration declaring variables I want to be visible to all methods in a class into the @interface class definition eg @interface myclass UIImageView int aVar and then I declare it again as @property int aVar And then later I @synthesize aVar Can you help me.. c iphone properties share improve this question Here you're declaring an instance variable named aVar @interface myclass UIImageView int aVar You can now use this variable within your class aVar 42 NSLog @ The Answer is i. aVar However instance.. int aVar return aVar void setAVar int newAVar if aVar newAVar aVar newAVar Now other classes can get and set aVar via myclass aVar myclass setAVar 24 Writing these accessor and mutator methods can get quite tedious so in Objective C 2.0 Apple simplified..
Resolving html entities with NSXMLParser on iPhone http://stackoverflow.com/questions/2370842/resolving-html-entities-with-nsxmlparser-on-iphone 1 HEAD BODY LI class bye bye rel hello 1 H5 class onlytext A name morning_part morning A H5 DIV class mydiv SPAN class myclass something about you SPAN SPAN class anotherclass A href http www.google.it Bye Bye egrave un saluto A SPAN DIV LI BODY HTML..
what is diff. b/w @property (nonatomic,assign) and @property (nonatomic,retain) [duplicate] http://stackoverflow.com/questions/5352743/what-is-diff-b-w-property-nonatomic-assign-and-property-nonatomic-retain delegate which use this keyword assign instead of retain. y we have use assign instead retain. may i use assign to myclass ivar. if i did like that then what is the meaning of it iphone objective c cocoa cocoa touch xcode share improve this..
Calling a method from another class in Objective C http://stackoverflow.com/questions/9629417/calling-a-method-from-another-class-in-objective-c need in C# as shown below. Just wanted to know what the equivalent of it would be in Objective C. class A public A B myclass new B calculate public void calculate todo class B public B Action calculate calculate Is it possible to do this using..
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