The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex
To expand upon what Randy said, this is what I use in my application to make every http://, https://, and mailto:// URL open in the external Safari or Mail applications:
ReplyDelete-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
{
NSURL *requestURL =[ [ request URL ] retain ];
if ( ( [ [ requestURL scheme ] isEqualToString: @"http" ] || [ [ requestURL scheme ] isEqualToString: @"https" ] || [ [ requestURL scheme ] isEqualToString: @"mailto" ])
&& ( navigationType == UIWebViewNavigationTypeLinkClicked ) ) {
return ![ [ UIApplication sharedApplication ] openURL: [ requestURL autorelease ] ];
}
[ requestURL release ];
return YES;
}
As Randy says, you'll want to implement this within whatever class you set to be the delegate of the UIWebView. To have only select URLs launch Safari, you could change their scheme from http:// to safari://, or something similar, and only kick those URLs off to the system (after replacing the custom URL scheme with http://).
I do this within my internal help documentation, which is HTML displayed in a UIWebView, so that I don't run into issues in the review process with having a general-purpose web browser embedded in my application.
I haven't tried this myself but I think that you can implement the UIWebViewDelegate method
ReplyDeletewebView:shouldStartLoadWithRequest:navigationType
which will be called anytime a link in the UIWebView is clicked on. In that method you just need to determine if the clicked link should result in launching Safari or not and use openURL if it should.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
// Check if this was a click event and then some other criteria for determining if you want to launch Safari.
if (navigationType == UIWebViewNavigationTypeLinkClicked && [Some other criteria]) {
[[UIApplication sharedApplication] openURL:request.URL];
// Return false to indicate to the UIWebView to not navigate to the linked target
return false;
}
// Return true so that the UIWebView loads the link target
return true;
}
Don't forget that you need to set your UIWebView delegate property to an instance of the class that implements the UIWebViewDelegate.
Ok I got it. Maybe its not the perfect solution, but you can do it like this:
ReplyDeleteOnly in your WebViewController.m:
add the line webView.delegate = self; to the viewDidLoad procedure:
- (void)viewDidLoad {
webView.delegate = self;
.... your code ....
}
Then you can add as described above somewhere in the Controller.m File following boolean resulting function:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if (navigationType == UIWebViewNavigationTypeLinkClicked) {
[[UIApplication sharedApplication] openURL:request.URL];
return false;
}
return true;
}