webview - UIWebView，启用触摸保存图像，

Question

这是我的代码，但不工作

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


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


}


(void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.state == UIGestureRecognizerStateEnded ) {
    NSLog(@"Long Press");

//do something

} }`