UILongPressGestureRecognizer将触摸传递到UIWebView

Question

I added UILongPressGestureRecognizer to UIWebView :

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longTouch:)];
longPress.delegate = self;
longPress.minimumPressDuration = 0.5;
longPress.cancelsTouchesInView = YES;

[_webView addGestureRecognizer:longPress];

cancelsTouchesInView set to YES , but after long press on hyperlink touch pass to UIWebView and UIWebView click on this hyperlink and load other page.

How can I disable touches to UIWebView after long press?

Answer 1

You may used below code to prevent touch links inside of webview content -

@property (assign, nonatomic) BOOL allowLoad;

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
    return allowLoad;
}

- (void)webViewDidFinishLoad:(UIWebView*)webView {
    allowLoad = NO;
}

Don't forgot to set delegate [self.webView setDelegate:self];

Hope this will be help you

Answer 2

Implement below gesture delegate method to prevent web view touch on long press:

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.view isDescendantOfView:self.webView])
    {
        //Ignore gesture when it's web view
        return NO;
    }

    return YES;
}

Update

Please try with below code -

-(void)webViewDidFinishLoad:(UIWebView *)webView 
{
    [webView stringByEvaluatingJavaScriptFromString:@"document.body.style.webkitTouchCallout='none'; document.body.style.KhtmlUserSelect='none'"];   
}