is there a way to track the user-input to a uiwebview?
In my case the user must fill out several folders in the webpage (Login form). However, the input (strings) should then be handeled by / stored in the app. (App should remember login-info and do login next time automatically)
Thanks for help
Yes you can do this. Implement
– webView:shouldStartLoadWithRequest:navigationType:
This delegate . This method gets called whenever your webview is about to make a request. So now when someone clicks a button on your webpage, you will get a call to this method. After you catch this call, you can choose to do whatever you want with it. Like redirect the link through your own servers, or log a request to your server about user activity etc.
Example - here you are trying to intercept any links clicked on your webpage & pass it through myMethodAction first.
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType
{
if(navigationType == UIWebViewNavigationTypeLinkClicked)
{
if(overrideLinksSwitch.on == TRUE)
{
[self myMethodAction];
[myWebView stopLoading];
return YES;
}
else
{
return YES;
}
}
return YES;
}
Hope this helps...
Related
I have a simple app, with only a login page. When the user sing-in, I load a webview running an entire html5 app.
The point is that I would like to capture when the user has decided to logout.
Is there any way to listen when a specific url has been loaded?
If so, when the user press logout and the /logout.html would be loaded and I would have the opportunity of returning the control to the iOS app.
Conform to UIWebViewDelegate in your .h file
Set your delegate of UIWebview
Implement the below method:
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSLog(#"URL Request = %#",[[[webView request] URL] lastPathComponent]);
// if (check stringlogout.html) {
// return NO;
// }
// else{
// return YES;
// }
return YES;
}
Check your last component string if it is logout.html then you can do the required stuff and in else you can do what if it is not logout.html action.
Return YES if you want to load the page and return NO if you do not want to load the page.
Good luck with your app...
I have a problem : I have a simple application with a menu and a link that goes to the web page. The web page is: "soundcloud" it is a site that generates music. for example, if I put on a play music and I return to the menu of my application, the music is still running when I return to the web page, the music is still here but the page is returned to zero. and I want to prevent this. sorry for my english I'm french –
Cordialy
Davy
EDIT: This is assuming that the page is contained in a UIWebView within your app. If it's a link that opens in Safari, I don't believe you are going to be able to block navigation in Safari...but in your own web view you can.
Set the controlling class (whichever view controller contains your web view) as a UIWebView delegate. Then, when you implement the delegate protocol:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{ //If you want to block ANY navigation
return NO;
//If you want to block refreshes but allow other navigation
if (navigationType == UIWebViewNavigationTypeReload) return NO;
{
Inspired by #Reid Belton's answer
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
//to prevent reloading html if it is already loaded
if( isHTMLLoaded)
{
return NO;
}else{
isHTMLLoaded = YES;
return YES;
}
}
I have web content inside a UIWebView in my app. My goal is to have all links open normally inside the app, but any links starting with "http://maps", get opened in safari, so they can in turn be opened in the external iphone maps app. If you have a solution for this problem stop reading now, below I'm going to propose my solution. Currently all links are opened inside the app, so http://maps links open to m.google.com inside the app. The solution I'm thinking of involves this code which uses openURL to open all links in safari:
(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if (navigationType == UIWebViewNavigationTypeLinkClicked) {
\[\[UIApplication sharedApplication] openURL:request.URL];
return false;
}
return true;
}
Obviously the problem with this code is that all links are opened in safari, and I only want map links. Can you suggest a way to parse through links and only pass ones that start with http://maps through the function? Also a more simple question, how do I delegate UIWebView so I can run this code, and also is the viewcontroller.m the right place to put this code?
If you guys could suggest an entire function, including the openURL part above and the link parsing to make sure only maps links get passed through the function that would be awesome. Again, if you have another solution or workaround I would love to hear it. Thanks so much for your help, stackoverflow has been a lifesaver, I'm almost finished with my first project ever!
Try something like this:
-(BOOL)webView:(UIWebView *)inWeb
shouldStartLoadWithRequest:(NSURLRequest *)request
navigationType:(UIWebViewNavigationType)inType {
// let UIWebView deal with non-click requests
if (inType != UIWebViewNavigationTypeLinkClicked) {
return YES;
}
// URL starts with "http://maps"?
if ([[request.URL description] hasPrefix:#"http://maps"]) {
// open URL in Safari and return NO to prevent UIWebView from load it
[[UIApplication sharedApplication] openURL:[request URL]];
return NO;
}
// otherwise let UIWebView deal with the request
return YES;
}
NSString *linkPath = [[request url] path];
if ([linkPath hasPrefix:#""http://maps"]) {
//open in safari
}
else {
//do whatever
}
We have an iphone app that hosts a web browser control which points to a website whose sole purpose is to display information for the application. I would like to know if it is possible to have an anchor/button open Safari using HTML/JavaScript. If it is possible, how so?
Thanks...
You can setup a delegate for the UIWebview you are using. In this delegate, write something like this:
-(bool) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
//You might need to set up an "interceptLinks"-Bool since you don't want to intercept the initial loading of the content
if (self.interceptLinks) {
NSURL *url = request.URL;
//This launches Safari with your URL
[[UIApplication sharedApplication] openURL:url];
return NO;
}
//No need to intercept the initial request to fill the WebView
else {
self.interceptLinks = TRUE;
return YES;
}
}
If you only want to intercept some links, you can parse the url and only open Safari if necessary.
Set the delegate property of your UIWebView object (what you call the 'web browser control') to an object of your own that implements the method "webView:shouldStartLoadWithRequest:navigationType:" of the UIWebViewDelegate protocol:
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIWebViewDelegate_Protocol/Reference/Reference.html%23//apple_ref/occ/intf/UIWebViewDelegate
You can then detect if you desired URL is being requested and in that case open it on an external Safari instance using UIApplication's openURL method.
You can use something like this:
myWebView.ShouldStartLoad += LoadHook;
[...]
bool LoadHook (UIWebView sender, NSUrlRequest request, UIWebViewNavigationType navType){
var requestString = request.Url.AbsoluteString;
// determine here if this is a url you want to open in Safari or not
if (WantToOpenInSafari (requestString)){
UIApplication.SharedApplication.OpenUrl (new NSUrl (requestString));
return true;
} else {
return false;
}
}
I have an embedded website that has many links but the webview window is fairly small to allow for a larger image above the list to be zoomed in and out. I need the webview to respond to hyperlinks into a new controller view with a second embedded UIWebView if at all possible.
The UIWebView has a delegate wich allows you to respond to certain events, e.g. a request to load new content. Just implement the following in your delegate-class
-(bool) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
//You might need to set up a interceptLinks-Bool since you don't want to intercept the initial loading of the content
if (self.interceptLinks) {
NSURL *url = request.URL;
//This launches your custom ViewController, replace it with your initialization-code
[YourBrowserViewController openBrowserWithUrl:url];
return NO;
}
//No need to intercept the initial request to fill the WebView
else {
self.interceptLinks = YES;
return YES;
}
}