UIWebView is not loading url

Question

I know this is a common question but none of the answers fix my problem. I have a UIWebView in my app. I have everything set up correctly; the delegate is set, the webView is a property of my view controller. It is set up to load an html string upon loading the viewController. When the html string loads, in the webViewDidFinishLoad method it checks if this is the first time it loaded, and if it is it is told to load a request with a url. The string i use for the url is a property of my viewController. That string is exactly what it is supposed to be. There is just something preventing the webView from actually loading the request. Any ideas would be very much appreciated. Thank you

    @interface WebViewController : UIViewController <UIWebViewDelegate, UIActionSheetDelegate, UIPrintInteractionControllerDelegate, MFMailComposeViewControllerDelegate, NSURLConnectionDelegate>

@property (nonatomic, assign) BOOL firstLoad;
@property (nonatomic, retain) UIWebView *webView;
@property (nonatomic, retain) NSString *prefixURLString;
@property (nonatomic, retain) NSString *suffixURLString;
@property (nonatomic, retain) UIActionSheet *actionSheet;

- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix;
- (void)reload;
- (void)addActionButton;
- (void)showActions:(UIBarButtonItem *)sender;
- (void)dismissActionSheet;

@end



@implementation WebViewController

@synthesize webView;
@synthesize prefixURLString;
@synthesize suffixURLString;
@synthesize firstLoad;
@synthesize actionSheet;

- (id)initWithTitle:(NSString *)newTitle withPrefixURL:(NSString *)prefix andSuffixURL:(NSString *)suffix
{
    self = [super initWithNibName:nil bundle:nil];
    if (self) {
        // Custom initialization
        [self setPrefixURLString:prefix];
        [self setFirstLoad:YES];
        [self setTitle:newTitle];
        [self setSuffixURLString:suffix];
        [self setActionSheet:nil];
    }
    return self;
}

- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix
{
    return [self initWithTitle:newTitle withPrefixURL:@"https://customer.stld.com/flatroll/ios/%@" andSuffixURL:suffix];
}

- (void)reload
{
    if(self.prefixURLString && self.suffixURLString)
    {
        NSString *fullURLString = [NSString stringWithFormat:self.prefixURLString, [self.suffixURLString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
        [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:fullURLString]]];
    }
}
- (void)dealloc
{
    [suffixURLString release]; suffixURLString = nil;
    [prefixURLString release]; prefixURLString = nil;
    [actionSheet release]; actionSheet = nil;
    [super dealloc];
}


- (void):(UIWebView *)aWebView didFailLoadWithError:(NSError *)error
{
    //NSLog(@"WebViewController:DidFailLoadWithError: %@", [error localizedFailureReason]);
    [self setTitle:@"Loading Error"];
    [self.webView loadHTMLString:[NSString stringWithFormat:@"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body>Loading error:<br />%@</body></html>", [error localizedFailureReason]] baseURL:nil];
}

- (void)webViewDidFinishLoad:(UIWebView *)aWebView
{
    if(self.firstLoad)
    {
        [self setFirstLoad:NO];
        [self reload];
        [self addActionButton];
    }
}

#pragma mark - View lifecycle

- (void)loadView
{
    UIWebView *newWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
    [newWebView setDelegate:self];
    [newWebView setScalesPageToFit:YES];
    [newWebView setUserInteractionEnabled:YES];
    [self setWebView:newWebView];
    [self setView:newWebView];
    [newWebView release];
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.webView loadHTMLString:@"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body><br />Gathering data and generating report.<br />Depends on data and parameters you have requested, this could take time.  Please wait...</body></html>" baseURL:nil];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
    [self.webView setDelegate:nil];
    [self setWebView:nil];
    [self setView:nil];
}

'NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [webView loadRequest:requestObj]; ' — Bajaj

stringCode stringCode · Accepted Answer · 2012-09-26T13:05:34

I had the same problem, I'm not entirely sure why, but I guess it has to do something with viewControllers life cycle. Anyway try load URL in viewDidAppear method. It fixed it for me. Hope it will help

UIWebView is not loading url

2 Answers