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Ios Cannot Find Protocol Definition

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In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms Instead of importing MainViewController.h in ControlPanel.h, just add a forward declaration of the class(es) you need to reference to the file: // ControlPanel.h #import #import "Connection.h" @class MainViewController; @protocol ControlDelegate Well, Uli was wrong in implying that the compiler *has* to know the definition of the protocol. How can an advanced (circa 7000 AD) spacefaring human civilization be prevented from entering its own solar system? http://tcsmacs.net/cannot-find/iphone-cannot-find-protocol-declaration-delegate.php

As I said, there is an @protocol MyCustomDelegate before I use it in the @interface-Block. the warning. We recommend upgrading to the latest Safari, Google Chrome, or Firefox. Why can issuing the same command create more output in tty than in pts/gnome-terminal? http://stackoverflow.com/questions/14993265/cannot-find-protocol-definition-for-xxx

@implementation Declaration Cannot Be Protocol Qualified

Acknowledged. However, the reason I moved the imports from the header to the .m-file were import-cycles. asked 4 years ago viewed 1462 times active 4 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Related 43Xcode: Possible to auto-create stubs for methods required by Protocol YYYHighEnergyProduct.h tries to #import "YYYProductInfo.h" and depends on definitions made there, while YYYProductInfo tries to #import "YYYHighEnergyProduct.h" and depends again on those definitions.

I think those delegates already bloated our code enough, now I should go on and even declare an own file for it? Please let me know if you know what's wrong with the forward declaration. how can i fix this? Cannot Find Protocol Declaration Swift Am I missing something?

objective-c protocols share|improve this question edited Feb 21 '13 at 2:11 asked Feb 21 '13 at 1:48 Bohan Gao 196210 3 Max_: While some things we used to do with As I posted, a viable option is to write the protocol declaration into a separate file. I just tried this, and it gives me a warning: // t.m #import @protocol FooProto; @interface SomeClass : NSObject @end @implementation SomeClass @end int main(int argc, char **argv) { 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

Dunno why it didn't work for me. Cannot Find Protocol Declaration For Cllocationmanagerdelegate your code is running fine without errors for me (XCode4.6) - I just tried it in some older versions in case something had changed, but it's ok also in 4.2 ;-j Is this really the way to go? 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

Cannot Find Protocol Definition Swift

Forward declaration of protocols work just like forward declarations of classes. 0 · Dr.Lightning Posts: 13Registered Users February 2010 edited February 2010 ole wrote: ยป This is not true. Should I report it? @implementation Declaration Cannot Be Protocol Qualified Please post your code in its entirety. Xcode Cannot Find Protocol Declaration Browse other questions tagged objective-c ios5 protocols forward-declaration or ask your own question.

Terms Privacy Security Status Help You can't perform that action at this time. http://tcsmacs.net/cannot-find/ld-cannot-find.php The project builds fine and actually runs perfectly. Could someone please explain what's wrong in following class structure? On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? Cannot Find Protocol Declaration For Delegate Ios

Reload to refresh your session. Small sample code to better illustrate the problem: NewFooController.h: #import @protocol NewFooControllerDelegate; @interface NewFooController : UITableViewController @property (nonatomic, weak) id Why can issuing the same command create more output in tty than in pts/gnome-terminal? check my blog GestureViewDelegate.h), which can be imported in the implementing header file (whereas the class itself could be forward declared). –Ell Neal Dec 14 '12 at 12:29 Thanks Ell, I had

Each adjacent layer communicates with the next, and this led to the recursion. Cannot Find Protocol Declaration For Delegate Swift We'll fix it soon! I understood your solution and it does make completely sense to me but I am wondering how other protocols like UITableView-Delegate and Datasource have been implemented?

It then imports the viewController.h file and sees this implements this protocol.

So I need a solution which gets rid of the warning and can not lead to import-cycles. When you declare a class as conforming to a protocol, the compiler has to know what methods that protocol contains, so it can make sure to complain if one of the Why is Professor Lewin correct regarding dimensional analysis, and I'm not? Swift Protocol In Objective C Not the answer you're looking for?

It can generate code without it. My PodFile platform :ios, '7.0' gem 'cocoapods', '0.25.0' pod 'AFNetworking', '1.2' pod 'AFOAuth2Client', '0.1' pod 'Base64' pod 'SVPullToRefresh', '0.4.1' pod 'SVProgressHUD', '0.9.0' pod 'TTTAttributedLabel' pod 'HockeySDK' pod 'TPKeyboardAvoiding' pod 'NSStringEmojize', :git asked 4 years ago viewed 29372 times active 3 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Get the weekly newsletter! news Ran into something similar had to do with the protocol being in a header file and #include'ing it instead of #import'ing it.

Skyrim: How to stop NPCs from picking up dropped items Non-Repetitive Quine more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising 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 I think those delegates already bloated our code enough, now I should go on and even declare an own file for it? 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

The idea that the actual protocol declaration (as opposed to the forward reference) belongs with the implementation ignores the fact that the public @interface is all that clients of the class But I just found a fault in my sample code anyways: the ".h"-file of HomeTableViewController should have an "@protocol NewFooController" declaration. > > Corrected sample code for HomeTableViewController.h: > > #import You signed in with another tab or window. River Crossing Puzzle Where to take phone interview while at work Does the electoral vote count ever get reallocated between states?

E.g., in my .h file I might have , ideally I want to put ALL the delegates there. Now, as far as I can see, when the compiler gets to viewController1.h, the first thing it sees is the declaration of the protocol. But I still feel there must be something wrong to be given a warning.