UIWebView delegate method shouldStartLoadWithRequest: equivalent in WKWebView?

Question

I have a module inside my iOS 7+ app which is a UIWebView. The html page loads a javascript that creates custom-shaped buttons (using the Raphaeljs library). With UIWebView,

Answer 1

You can add Observer for your WKWebView

 static void* keyValueObservingContext = &keyValueObservingContext;

[webView addObserver:self forKeyPath:@"URL" options:0 context:keyValueObservingContext];


- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
 {

if ([keyPath isEqualToString:@"URL"]){
// do something
  }
}

Don't forget to remove it in viewWillDisappear

-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[webView removeObserver:self forKeyPath:@"URL"];
}