UIWebView，启用触摸保存图像，

Question

这是我的代码但不起作用

`- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
    longPress.minimumPressDuration = 2;


[self.webview addGestureRecognizer:longPress];
[longPress release];


}

[self.webview addGestureRecognizer:longPress];
[longPress release];

} }`