UIWebView frame to fill screen when loaded landscape and portrait

I am adding a UIWebView to my view, which works fine when I am in portrait. But when I load that same UIWebView in landscape it does not fill the screen. I suspect it comes from how I am setting the frame:

CGRect screen = [[UIScreen mainScreen] bounds];
UIWebView *webView = [[UIW开发者_开发百科ebView alloc] initWithFrame:CGRectMake(0, 0, screen.size.width, screen.size.height)];
webView.autoresizingMask = UIViewAutoresizingFlexibleWidth;
webView.scalesPageToFit = YES;

Is there a better way to do this so it will load correctly in both landscape and portrait, and fill the screen when rotated?

How sure are you that the parent view is resizing to the full width? UIWebView subview will not go larger than it's parent...

I had same problem.. After i Logged the self.view.frame.size.width i was surprised to find out thats it was 320 instead of 480. The solution to this was :

- (void)viewWillAppear:(BOOL)animated {
[self.view setBounds:CGRectMake(0.f, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view setCenter:CGPointMake(self.view.frame.size.width/2, self.view.frame.size.height/2)];
[(UIWebView*)myWebView setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];}

Seems that the correct size of self.frame is returned just before showing the view :)