I found several posts online stating that I could access my application delegate object from any view controller through the following call:
[[UIApplication sharedApplicaton] delegate];
(For instance: data between Views UIApplication, iOS - Calling App Delegate method from ViewController)
However, whenever I include this line in a function in one of my view controllers, the application crashes.
This is the first application that I'm writing, and I cannot see the difference between my code and how other posts have said I should be using this sharedApplication call. For completeness, below is an excerpt from my application delegate and view controller.
FirstViewController.h:
@class wStreamAppDelegate;
#define URL_ADDRESS @"http://google.com"
@interface FirstViewController : UIViewController <UIWebViewDelegate>{
IBOutlet UIWebView * webView;
wStreamAppDelegate* appDelegate;
}
@property(nonatomic,retain) wStreamAppDelegate* appDelegate;
@property(nonatomic,retain) IBOutlet UIWebView* webView;
FirstViewController.m:
#import "FirstViewController.h"
#import "wStreamAppDelegate.h"
@implementation FirstViewController
@synthesize webView,appDelegate;
@class wStreamAppDelegate;
- (void)viewDidLoad {
[super viewDidLoad];
NSString* urlAddress = URL_ADDRESS;
NSURL* url = [NSURL URLWithString:urlAddress];
NSURLRequest * requestObj = [NSURLRequest requestWithURL:url];
[webView loadRequest:requestObj];
self.appDelegate = (wStreamAppDelegate*)[[UIApplication sharedApplicaton] delegate];
//This doesn't work either
// wStreamAppDelegate *appDelegate= (wStreamAppDelegate*)[[UIApplication sharedApplicaton] delegate];
wStreamAppDelegate.h:
@interface wStreamAppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> {
UIWindow *window;
UITabBarController *tabBarController;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
@end
If anyone has any thoughts on what may be going wrong, general advice for debugging problems like these, or tips, I'd really appreciate it. Thanks.
