Handling touches inside UIWebview

Question

I have created a subclass of UIWebView , and have implemented the touchesBegan, touchesMoved and touchesEnded methods.

Answer 1

You could put an UIView over your UIWebView, and overide the touchesDidBegin etc, then send them to your webview. Ex:

User touches your UIView, which provokes a

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{  
    // Execute your code then send a touchesBegan to your webview like so:
[webView touchesBegan:touches withEvent:event];
return;
}

your UIView has to be over the webview.

Answer 2

I would try overriding -sendEvent: on UIWindow, to see if you can intercept those touch events.

Answer 3

Do you mean your sub-classed implementation is not called when touchesBegan, touchesMoved and touchesEnded are called?

It sounds like a problem with how you've created an instance of the object. More details are required I think.

(taken form comments)

Header File

#import <UIKit/UIKit.h> 

@interface MyWebView : UIWebView { } @end 

Implementation File

#import "MyWebView.h" 

@implementation MyWebView 

- (id)initWithFrame:(CGRect)frame { 
    if (self = [super initWithFrame:frame]) { } return self; 
} 

- (void)drawRect:(CGRect)rect { 
    NSLog(@"MyWebView is loaded"); 
} 

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
   NSLog(@"touches began"); 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"Touches ended");     
} 

- (void)dealloc { 
   [super dealloc]; 
} 

@end

Answer 4

No subclassing needed, just add a UITapGestureRecognizer :

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapMethod)];
[tap setNumberOfTapsRequired:1]; // Set your own number here
[tap setDelegate:self]; // Add the <UIGestureRecognizerDelegate> protocol

[self.myWebView addGestureRecognizer:tap];

Add the <UIGestureRecognizerDelegate> protocol in the header file, and add this method:

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