处理UIWebview中的触摸

我创建的一个子类UIWebView,并且已经实施了 touchesBegan,touchesMoved和touchesEnded方法.

但是webview子类不处理touch事件.

是否有任何方法来处理UIWebView子类内的触摸事件???

1> 小智..：

---

不需要子类化,只需添加一个UITapGestureRecognizer:

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

[self.myWebView addGestureRecognizer:tap];

在头文件中添加协议,并添加此方法:

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

---

我做了所有这些,但是在一个案例中,直到我还实现了` - (BOOL)gestureRecognizer:(UIGestureRecognizer*)gestureRecognizer shouldReceiveTouch:(UITouch*)触摸`UIGestureRecognizerDelegate`并返回`YES`.

2> ecume des jo..：

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如果您只需要处理手势,同时保持UIWebView的其余功能不变,您可以继承UIWebView并使用此策略:

在UIWebView子类的init方法中,添加手势识别器,例如:

UISwipeGestureRecognizer  * swipeRight = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGestureRightMethod)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
[self addGestureRecognizer:swipeRight];
swipeRight.delegate = self;

然后,将此方法添加到您的类:

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

添加并处理指定的选择器到类,在本例中为"handleSwipeGestureRightMethod",你很高兴...

3> Alexandre Ca..：

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你可以把一个UIView在你的UIWebView,并在此改变touchesDidBegin等,然后将它们发送到您的网页流量.例如:

用户接触你UIView,这会激起你的兴趣

- (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;
}

你UIView必须通过webview.

4> Benjie..：

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我不确定这是不是你想要的(这不是你要求的,但它可能会取决于你的最终游戏是什么),但你可以从UIWebView内部解释JavaScript的触摸,并获得javascript到做

document.location='http://null/'+xCoord+'/'+yCoord; // Null is arbitrary.

然后,您可以使用UIWebView的委托方法捕获它

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

如果request.URL.host(或其他任何东西)isEqualToString:@"null"采取相关的操作(并返回NO而不是YES).您甚至可以通过执行以下操作将JS添加到每个页面:

- (void)webViewDidFinishLoad:(UIWebView *)webView {
  [webView stringByEvaluatingJavaScriptFromString:@"window.ontouchstart=function(/* ... */);"];
}

希望这可以帮助？