UIWebView和UIScrollView上接受touch事件

UIWebView 的touch事件的捕捉：

- (void)viewDidLoad{

UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)];

self.webView.delegate=self;

   NSString *resourcePath = [ [NSBundle mainBundle] resourcePath];

     NSString *filePath = [resourcePath stringByAppendingPathComponent:@"test.html"];

     NSString *htmlstring=[[NSString alloc] initWithContentsOfFile:filePath  encoding:NSUTF8StringEncoding error:nil];

     NSString *newHTMLString=[htmlstring stringByAppendingString:@"<scriptlanguage=/"javascript/">document.ontouchstart=function(){         document.location=/"myweb:touch:start/";  }; document.ontouchend=function(){         document.location=/"myweb:touch:end/";  }; document.ontouchmove=function(){         document.location=/"myweb:touch:move/";  }  </script>"];

     [self.webView loadHTMLString:newHTMLString baseURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]]];

     [htmlstring release];

webView.backgroundColor = [UIColor redColor];

webView.frame = CGRectMake(0, 0, 768, 1024);

[self.view addSubview:webView];

}

 

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {

    NSString *requestString = [[request URL] absoluteString];

    NSArray *components = [requestString componentsSeparatedByString:@":"];

    if ([components count] > 1 && [(NSString *)[components objectAtIndex:0] isEqualToString:@"myweb"]) {

        if([(NSString *)[components objectAtIndex:1] isEqualToString:@"touch"])

        {

            NSLog(@"%@",[components objectAtIndex:2]);

        }

        return NO;

    }

    return YES;

}

 

UIScrollView上touch事件的捕捉：

创建一个继承于UIScrollView的类，

@interface MyScrollView : UIScrollView {

}

@end

并改写其touch方法；

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

if(!self.dragging)

{

[[self nextResponder] touchesBegan:touches withEvent:event];

}

[super touchesBegan:touches withEvent:event];

//NSLog(@"MyScrollView touch Began");

}

 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

if(!self.dragging)

{

[[self nextResponder] touchesEnded:touches withEvent:event];

}

[super touchesEnded:touches withEvent:event];

}