从AppDelegate将变量传递到视图

Question

i open a view in AppDelegate

with:

AppDelegate

PushDetail *pushdtls = [[PushDetail alloc] initWithNibName:nil bundle:nil];   
pushdtls.seminarurl = [NSURL URLWithString:resourcePathURL]; /passing URL
[self.window presentModalViewController:pushdtls animated:YES];

PushDetail.h

@property (nonatomic) NSURL *seminarurl;

PushDetail.m

- (void)viewDidLoad
{
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:seminarurl];
    [pushDetails loadRequest:requestObj];
}

But the webview is empty... what I do wrong?

and the second question how to close the view I opened?

- (IBAction) closeNews{
    //[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    //[self release];
    [self dismissModalViewControllerAnimated:YES];
}

does not work :(

Answer 1

You may implement the UIWebViewDelegate protocol within your view controller and fetch the results/error messages yourself.

Namely didFailLoadWithError - see the UIWebViewDelegate Protocol References for more.

Maybe its just a typo on your URL.

Example:

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    NSLog(@"oops, failed with error: %@", error);
}

Answer 2

You've not specified what pushDetails is, but I'm assuming it's an IBOutlet to a UIWebview on your PushDetail controller. My guess is that you've forgotten to bind your pushDetails outlet to the webview in your nib file.

Answer 3

You could create lets say a file that holds all your global variables lets call it GlobalVariables.h and .m. In the GlobalVariables.h file add this

extern NSURL *seminarurl;

@interface GlobalVariables

@property (retain, nonatomic) NSURL *seminarurl;    

@end

and in the GlobalVariables.m file add

#import "GlobalVariables.h"

@implements GlobalVariables

@synthesize seminarurl;

NSURL *seminarurl; // You could add what your URL is here as well you would just use '='

@end

So when you want to access it or assign a variable to it, it would just be like accessing or assigning any other variable. Just remember to import 'GlobalVariables.h' into which ever .m file you are using it in.

Answer 4

1. make your property retained. ex >> @property (nonatomic,retain) .

2. if the url is a property in your app delegate .. you can access it like this

   [UIApplication SharedApplication].delegate.yourpropertyname;