I have a UIWebView, whose delegate is set in viewDidLoad and then a URL is passed to it. This screen is loaded once the app launches. The webviewdoesn't load the URL and the delegate method (given below) is not called
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
There is a button on the same screen. When i press that after app launches. The same Web view loads.
Please tell me why my UIWebview is not loading for the first time?
It happens only in iOS 9. In iOS 8, it works perfectly.
Add below key in you .plist and try.
Related
Any body have idea, how to access the camera through a web view app in iOS?
Currently using Xcode 9 swift. but am willing to change the complete coding, if needed.
At the moment the WKWebview is being used.
Refer to this link to see my coding. "iOS web view application accessing the camera objc" thank you.
you can open camera on changing url.
when your URL will change below method will call, you can write code for open camera inside function
// this is delegate method called while changing url.
(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
//Code for camera after checking url
}
Can not catch when web view change it's url without loading the page.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
This delegate method is getting called when loading the webpage for the first time.But after that if the webpage navigate on clicking of a button none of the delegate methods is getting called.If I load the page in browser I can see the URL change. Webpage is using History.pushState to change the URL.
In iOS, the default behavior when I open my webpage is that after login it opens the next page in a new window. But now when I open it in iOS webview, it does not open the next page. I google about it, and the cause seems to be the popup blocker. So, is there any simple way to disable the popup blocker in the iOS webview?
The webpage might have a redirection that you are not handling properly.
You may first want to use webView:didFailNavigation:withError: or webView:didFailProvisionalNavigation:withError: to get some reasons or clues. And you can try to debug webView:decidePolicyForNavigationAction:decisionHandler: to see whether you are allowing the navigation.
If the redirection somehow generates an about:blank page in the transition, you could try to use UIWebViewDelegate's webView:shouldStartLoadWithRequest:navigationType: and returns a YES if request.URL.absoluteString is indeed about:blank, for example:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if ([request.URL.absoluteString isEqualToString:#"about:blank"]) {
return YES;
}
return NO;
}
BTW, you also can try to use Safari to debug webViews in your simulator. For instance, try document.location in your inspector to see what actually is the URL when the page doesn't open.
I need to intercept a click on a UIWebView on a video pre-roll advertisement and have this displayed in a new popup window instead of in the UIWebView which is quite small on the screen.
The issue is that I don't know what the URLs that are being clicked and also that these clicks are processed via Javascript on the page as well. There would also be Javascript reporting/tracking calls going out from the UIWebView in the background.
Is there anyway to detect that the UIWebView is opening a new page and instead of displaying that in place it get's displayed in a popup?
Great question. All you will have to do is implement the UIWebViewDelegate protocols.
This method:
(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
is likely the one you will use to detect all events happening within the UIWebView.
In my iOS app I have a UIWebView which works fine. What I am unable to get is which function is invoked when user taps on a text field in a displayed webpage. To make my problem clearer:
If I display google in the UIWebView and then tap on the search bar, UIWebView automatically pops up the keyboard. I want to know how does UIWebView detects the search bar being tapped. What function is invoked on this tap?
I am sure it is not
webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSMutableURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
Method, for it is not navigating to any new page.