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POcustom protocol doesn't work
 

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    <p>In the app I'm working on, I have a <code>UIViewController</code> sublcass and a <code>UIView</code> subclass. in the <code>storyboard</code> the view controller contains the <code>UIview</code>. in the uiview I'm drawing something but I need it to know some values that it should be getting from the view controller. So I created a custom protocol in the view controller .h file:</p> <pre><code>@protocol SSGraphViewControllerProtocol &lt;NSObject&gt; - (void)numberOfSemesters:(int)number; @end @property (weak, nonatomic) id &lt;SSGraphViewControllerProtocol&gt; delegate; </code></pre> <p>and in the <code>UIView</code> class I confirmed it as having the protocol above and I implemented its method. However. when I pass a number from the view controller, <code>UIView</code> doesn't receive it. Using NSLog, I figured out that <code>UIView</code> isn't entering <code>- (void)numberOfS:(int)number;</code> am I doing anything wrong? How can I fix it? and is there another way that I can send data from the <code>UIViewController</code> class to the <code>UIView</code> controller?</p> <p>Here is the full code: UIViewController.h</p> <pre><code>@protocol SSGraphViewControllerProtocol &lt;NSObject&gt; - (void)numberOfSemesters:(int)number; @end @interface SSGraphViewController : UIViewController @property (weak, nonatomic) id &lt;SSGraphViewControllerProtocol&gt; delegate; @end </code></pre> <p>UIViewController.m</p> <pre><code>@implementation SSGraphViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. [self.delegate numberOfSemesters:2]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end </code></pre> <p>UIView.h</p> <pre><code>@interface SSGraph : UIView &lt;SSGraphViewControllerProtocol&gt; @end </code></pre> <p>UIView.m</p> <pre><code>static int numberOfS = 0; @implementation SSGraph - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code } SSGraphViewController *graph = [[SSGraphViewController alloc] init]; graph.delegate = self; return self; } - (void) numberOfSemesters:(int)number{NSLog(@"YES"); numberOfSemesters= number; } // Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. - (void)drawRect:(CGRect)rect { } </code></pre>
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    1. COyou sure the class in storyboard for the view is correct?
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    2. COPlease post more of your code so we can help you. where did you implement the custom protocol, did you use view.delegate = self, etc...
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    3. COYes, the view controller has the custom class as the one i created and it's view also has the custom class i created. Btw once i was working with protocols and delegation and i realised that i can't send delegation from a parent to child in a navigation. is that true?
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