2014/10/15 下午 10:11:47

iphone Programming Glossary: myprotocol

How to update the value of slider and switch when get back from presentModalViewController?

http://stackoverflow.com/questions/11580106/how-to-update-the-value-of-slider-and-switch-when-get-back-from-presentmodalview

2 options though. First you have to declare the protocol in the view you are presenting modally in your .h @protocol MyProtocol @interface MyClass NSObject @property nonatomic weak id MyProtocol delegate @end @protocol MyProtocol NSObject void updateValues.. you are presenting modally in your .h @protocol MyProtocol @interface MyClass NSObject @property nonatomic weak id MyProtocol delegate @end @protocol MyProtocol NSObject void updateValues NSArray values @end Then before presenting the modal view.. .h @protocol MyProtocol @interface MyClass NSObject @property nonatomic weak id MyProtocol delegate @end @protocol MyProtocol NSObject void updateValues NSArray values @end Then before presenting the modal view modally from the original view controller..

How to create a protocol with methods that are optional?

http://stackoverflow.com/questions/322498/how-to-create-a-protocol-with-methods-that-are-optional

your protocol into sections as you see fit. If you do not specify any keyword the default is @required. @protocol MyProtocol void requiredMethod @optional void anOptionalMethod void anotherOptionalMethod @required void anotherRequiredMethod @end..

Difference between protocol and delegates?

http://stackoverflow.com/questions/5431413/difference-between-protocol-and-delegates

which class is used so long as it implements a particular protocol . This can be done in Objective C as follows id MyProtocol instanceOfClassThatImplementsMyProtocol If you state this in your code then any class that conforms to the protocol MyProtocol.. a particular protocol . This can be done in Objective C as follows id MyProtocol instanceOfClassThatImplementsMyProtocol If you state this in your code then any class that conforms to the protocol MyProtocol can be used in the variable instanceOfClassThatImplementsMyProtocol.. instanceOfClassThatImplementsMyProtocol If you state this in your code then any class that conforms to the protocol MyProtocol can be used in the variable instanceOfClassThatImplementsMyProtocol . This means that the code that uses this variable knows..

how to use delegates with Automatic Reference Counting

http://stackoverflow.com/questions/6529191/how-to-use-delegates-with-automatic-reference-counting

jumped on the ARC bandwagon. In the past I would have my delegate properties declared like this @property assign id MyProtocol delegate So I thought I would do this under ARC @property weak id MyProtocol delegate Not so. On the @synthesize statement.. declared like this @property assign id MyProtocol delegate So I thought I would do this under ARC @property weak id MyProtocol delegate Not so. On the @synthesize statement in the .m I have a compile error Semantic Issue Existing ivar 'delegate' for..

Why tack a protocol of NSObject to a protocol implementation

http://stackoverflow.com/questions/679822/why-tack-a-protocol-of-nsobject-to-a-protocol-implementation

of NSObject to a protocol implementation I have been seeing some code around that resembles the following @protocol MyProtocol NSObject write some methods. @end Is there any particular reason why MyProtocol conforms to the NSObject protocol Isn't.. that resembles the following @protocol MyProtocol NSObject write some methods. @end Is there any particular reason why MyProtocol conforms to the NSObject protocol Isn't that rather redundant in that if you do something such as id MyProtocol foo foo.. why MyProtocol conforms to the NSObject protocol Isn't that rather redundant in that if you do something such as id MyProtocol foo foo here conforms to NSObject AND MyProtocol Just curious what the logic is. iphone objective c cocoa share improve..

How to handle Objective-C protocols that contain properties?

http://stackoverflow.com/questions/844678/how-to-handle-objective-c-protocols-that-contain-properties

contain properties I've seen usage of Objective C protocols get used in a fashion such as the following @protocol MyProtocol NSObject @required @property readonly NSString title @optional void someMethod @end I've seen this format used instead of.. an example that generates a compile error Note I've trimmed the code which doesn't reflect upon the problem at hand MyProtocol.h @protocol MyProtocol NSObject @required @property nonatomic retain id anObject @optional TestProtocolsViewController.h.. a compile error Note I've trimmed the code which doesn't reflect upon the problem at hand MyProtocol.h @protocol MyProtocol NSObject @required @property nonatomic retain id anObject @optional TestProtocolsViewController.h void iDoCoolStuff @end..