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POCalling delegate method from popover class
 

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  1. POCalling delegate method from popover class
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    <p>I'm new to Objective C and I'm having trouble getting delegates to work in my code.</p> <p>I have a class called cViewController and in this class has a UIWebView to fetch webpages and a button above it that calls a popover class called prodMenu. What I'm having trouble with is that the function to call webpages from the prodMenu class and display it on the parent UIWebView isn't working.</p> <p><strong>cViewController.h</strong></p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import "prodMenu.h" @interface cViewController : UIViewController &lt;prodMenuDelegate&gt;{ UIPopoverController *cpopover; IBOutlet UIWebView *webImageDisplay; } @property (nonatomic, retain) UIWebView *webImageDisplay; @property (nonatomic, retain) UIPopoverController *cpopover; - (IBAction)cPopoverTapped:(id)sender; - (void) fetchWebsite:(NSString *)website; //This is the delegate method I'm trying to call in the popover class. @end </code></pre> <p><strong>cViewController.m</strong></p> <pre><code>- (IBAction)cPopoverTapped:(id)sender { prodMenu *tp = [[prodMenu alloc] init]; cpopover = [[UIPopoverController alloc] initWithContentViewController:tp]; [tp release]; CGRect rect = CGRectMake(40, 0, 50, 50); cpopover.popoverContentSize = CGSizeMake(250, 225); [cpopover presentPopoverFromRect:rect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; } - (void)fetchWebsite:(NSString*)website{ //This function is called by prodMenu class NSLog(@"address: %@", website); NSString *urlAddress = website; NSURL *url = [NSURL URLWithString:urlAddress]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [webImageDisplay loadRequest:requestObj]; [webImageDisplay release]; } - (void)viewDidLoad { [self fetchWebsite:@"http://www.yahoo.com"]; [super viewDidLoad]; } </code></pre> <p><strong>prodMenu.h</strong></p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @protocol prodMenuDelegate; @interface prodMenu : UIViewController{ &lt;prodMenuDelegate&gt; delegate; } - (IBAction)radBtn:(id)sender; //This is the IBAction that calls the fetchWebsite function @property (nonatomic, assign) id &lt;prodMenuDelegate&gt; delegate; @end @protocol prodMenuDelegate - (void)fetchWebsite:(NSString *)website; @end </code></pre> <p><strong>prodMenu.m</strong></p> <pre><code>#import "prodMenu.h" #import "cViewController.h" @implementation prodMenu @synthesize delegate; - (IBAction)radBtn:(id)sender{ [delegate fetchWebsite:@"http://www.google.com"]; //Here is the call to the method } </code></pre> <p>Am I missing something here to call the delegate method? There aren't any errors or warnings. All I want to do is when the user presses a button on the popover view, the parent class underneath changes the webpage. Thanks in advance.</p>
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    1. USRay Y
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    1. COWhere is your instance of prodMenu ? That is where you would assign the cViewController instance to the 'delegate' property.
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      1. USAnders K.
    2. COSorry added the instance of prodMenu
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