Home > Cannot Find > @implementation Declaration Cannot Be Protocol Qualified

@implementation Declaration Cannot Be Protocol Qualified

Contents

Is adding the ‘tbl’ prefix to table names really a problem? This works fine but iOS gives warning message saying "Cannot find protocol definition for GestureViewDelegate". But I just found a fault in my sample code anyways: the ".h"-file of HomeTableViewController should have an "@protocol NewFooController" declaration. But, at some point, I need to figure this out and get rid of the warning. navigate here

Cheers, -- Uli Kusterer "The Witnesses of TeachText are everywhere..." http://www.masters-of-the-void.com Florian Pilz Re: Xcode warns about missing protocol definition, even though @protocol is used Apr 17 2012, 07:05 A thanks, River Crossing Puzzle Where to take phone interview while at work Does the electoral vote count ever get reallocated between states? Incidentally, I only just discovered that you can declare conformance on a class extension: @interface MyClass () while means there is a technique of privatizing the protocol conformance within the Someone peeled an American flag sticker off of my truck. http://stackoverflow.com/questions/14993265/cannot-find-protocol-definition-for-xxx

@implementation Declaration Cannot Be Protocol Qualified

The program compiles (with a warning) and runs perfectly fine. I also added @class and @protocol forward-declarations to soothe the compiler. more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation mrackwitz added the Help label Nov 4, 2015 mrackwitz self-assigned this Nov 4, 2015 Realm member mrackwitz commented Nov 4, 2015 You have a circular dependency in your headers, which doesn't

Lab colleague uses cracked software. Build me a brick wall! Best wishes Florian Am Montag, 16 April 2012 um 23:28 schrieb Uli Kusterer: > On 16.04.2012, at 23:03, Florian Pilz wrote: >> The import is done in the ".m"-file of HomeTableViewController. Cannot Find Protocol Declaration Swift Warnings are there for a reason.

It's the same as with plain C struct Foo; and struct Foo { int x; int y; }; Only the latter can actually be used (because now the compiler knows that Cannot Find Protocol Definition Swift Why "silver-tongued" for someone who is convincing? The logical place to emit this warning is on the @implementation, so the compiler can alert you that it can't verify you've _implemented_ all the methods you claim to. > > http://stackoverflow.com/questions/9991145/xcode-warns-about-missing-protocol-definition-even-though-protocol-is-used Linked 1 Protocol declaration warning Related 1How to determine if a UIView has a delegate that conforms to a protocol4“Cannot find protocol declaration for …” in adopting class objective c1Setting delegate

Thanks. –applefreak Oct 15 '12 at 12:21 add a comment| 2 Answers 2 active oldest votes up vote 19 down vote accepted I like that you're trying to avoid imports in Cannot Find Protocol Declaration For Cllocationmanagerdelegate It then imports the viewController.h file and sees this implements this protocol. This is true; I hadn't thought about that. Browse other questions tagged objective-c ios5 protocols forward-declaration or ask your own question.

Cannot Find Protocol Definition Swift

To the OP: there is no way a compiler can tell if a class conforms to a protocol when the only thing it knows is the name of the protocol. http://www.cocoabuilder.com/archive/cocoa/316410-xcode-warns-about-missing-protocol-definition-even-though-protocol-is-used.html So basically Xcode tells me, that it must know the implementation details, which are not given in the header file (but may be added in the implementation file -- therefore a @implementation Declaration Cannot Be Protocol Qualified I just stumbled about this problem for another time and rethought Ulis explanation. Xcode Cannot Find Protocol Declaration Complement of CFL is Recursive Should I allow my child to make an alternate meal if they do not like anything served at mealtime?

As I said, there is an @protocol MyCustomDelegate before I use it in the @interface-Block. check over here GestureView.h #import @protocol GestureViewDelegate @required - (void)GestureView:(GestureView*)view handleSignleTap:(UITapGestureRecognizer*)recognizer; @end @interface GestureView : UIView - (void)initialiseGestures:(id)delegate; @end ContainerView.h #import @class DividerView; @class GestureView; /*@protocol GestureViewDelegate;*/ //NO NEED TO WRITE You can implement them in the header file declaration itself! It simply tells the compiler "this protocol exists", but not what methods it actually consists of. Cannot Find Protocol Declaration For Delegate Ios

Will boring a cylinder affect its longevity thereafter? more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation How to reply? his comment is here How can I take a powerful plot item away from players without frustrating them?

Are there still systems around with a /bin/sh binary? Cannot Find Protocol Declaration For Delegate Swift When those lines are ABSENT, as I believe SHOULD be the case, I get an error message on the id...controlDelegate line that reads "Cannot find protocol declaration for 'ControlDelegate'" When those Especially since current advice is to make all your protocols conform to . --Kyle Sluder Jens Alfke Re: Xcode warns about missing protocol definition, even though @protocol is used May 04

The general structure of the file should be like this: @protocol viewController1Delegate; @class viewController2; @interface viewController1 @end @protocol viewController1Delegate @end share|improve this answer edited Apr 15 '12 at 9:43 answered

Technological gradient within a solar system? But am I getting this as a side effect? Not the answer you're looking for? Swift Protocol In Objective C I just stumbled about this problem for another time and rethought Ulis explanation.

The problem arose from having three logical layers in my app, and having each layer communicate with the other through a delegate. What happens when a wizard tries to cast a cone of cold through a wall of fire? This makes no sense to me. weblink Forum What's New?

If you disable the warning, then if you add a new method to the protocol later but don’t update a class that implements the protocol, you may not find out until But he’s correct that the compiler wants to know the definition so it can do proper consistency checking. > So basically Xcode tells me, that it must know the implementation details, Join them; it only takes a minute: Sign up iOS 5.0 Warning: Cannot find protocol definition for Delegate up vote 6 down vote favorite 2 I have custom UIView class GestureView. Not the answer you're looking for?

I have imported GestureView.h in .m file. Reload to refresh your session. スマートフォン用の表示で見る スターをつけました 引用をストックしました ストック一覧を見る 閉じる 引用するにはまずログインしてください ログイン 閉じる 引用をストックできませんでした。再度お試しください 閉じる 限定公開記事のため引用できません。 読者です 読者をやめる 読者になる 読者になる 日々精進 新しく学んだことを書き留めていきます 2013-03-28 cannot find protocol declaration forというビルドエラーが出る mac @interfaceにProtocolをつけたらcannot find Browse other questions tagged iphone objective-c ios delegates protocols or ask your own question. However, to fix your bug you can just make your code even better!

Interestingly this warning only occurs if the corresponding delegate is declared in another file (whose header is imported in the .m-file). Isn't there anyway we can create our custom protocols such that when you implement it, you have to override @required methods? i.e.: // RLMArray RLM_ARRAY_TYPE(YYYProductInfo) is there any coding error? i.e @class LeveyPopListView; –nkongara Feb 21 '13 at 2:18 I get it.

The first (Ill call it viewController1) declares a protocol. Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 406 Star 9,244 Fork 1,138 realm/realm-cocoa Code Issues 213 Pull requests 26 Projects