iphone - 如何检测 UIWebView 上的触摸

Question

在 UIWebview 上，如何检测触摸？

但当用户单击某个 URL 或触摸控件时则不会。

可以处理吗？

Answer 1

使用 UIGestureRecognizerDelegate 方法:

在声明文件(即您的 .h 文件)中添加 UIGestureRecognizerDelegate

第1步:只需设置gestureRecognizer的委托(delegate):(在.m文件viewDidLoad中)

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

第 2 步:覆盖此函数:(在 .m 文件中)

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

第 3 步:现在实现 tapAction 函数:

- (void)tapAction:(UITapGestureRecognizer *)sender
{    
    NSLog(@"touched");

    // Get the specific point that was touched
    CGPoint point = [sender locationInView:self.view];
}