iPhone - 我怎么能抓住UIWebView或UIImageView

Question

我有一个像这样生成的视图：

oneView = [[UIView alloc] initWithFrame:CGRectMake(x, y , w, h)];
oneView.tag = i;

UITapGestureRecognizer* recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap2:)];
[recognizer setNumberOfTouchesRequired:1];
[oneView addGestureRecognizer:recognizer];
recognizer.delegate = self;
[recognizer release];

- (void)handleSingleTap2:(UITapGestureRecognizer *)recognizer {
    int viewID = recognizer.view.tag;
    NSLog(@"id : %d", viewID);
}

这样可行，但如果我用UIWebView或UIImageView alloc替换UIView alloc，则不再触发触摸事件。

我怎样才能让它发挥作用？

Answer 1

设置userInteractionEnabled = YES，如果需要，设置multipleTouchEnabled = YES

Answer 2

关于UIWebView的问题，我建议您查看 drawnonward's 答案：

Does UIGestureRecognizer work on a UIWebView?

对于UIImageView Part，请参阅本教程：

UIImageView-with-zooming-tapping

我无法将代码粘贴到此处，但我认为这样可以使这个区域更清晰，更易于阅读。

Answer 3

你必须覆盖

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer;

委托功能并返回YES;