Gesture Snippets

Check tap on UIWebView
----------------------
1. add UIGestureRecognizer to declaration (h.file)

2. create TapGestureRecognizer and add to webview

    UITapGestureRecognizer *webViewTapped = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                                    action:@selector(showIntersticial)];
    webViewTapped.numberOfTapsRequired = 1;
    webViewTapped.delegate = self;
    [_webView addGestureRecognizer:webViewTapped];

3. override delegate method

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

4. write method to handle actions when tapped
- (void)showIntersticial{
    
// do something when had been tapped
}

check if specific element had been clicked
------------------------------------------

    UITouch *touch = touches.anyObject;
    CGPoint point = [touch locationInView:self.view];
    
    // check if selected element on screen is board
    UIView *hitView = [self.canvasView hitTest:point withEvent:event];

    if(hitView == _canvasView){
        // my element
    } else {
        // not my element
    }