UIWebView 左右划动手势

转载于 2012-09-07 06:03:56 发布 · 546 阅读

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本文介绍了如何使用UIGestureRecognizer及其子类实现网页视图中的手势识别功能，包括左右滑动手势的添加与响应处理。

UIGestureRecognizer实现的方法：

    UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
    [webView addGestureRecognizer:swipeRight];
    [swipeRight release];

    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];
    swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
    [webView addGestureRecognizer:swipeLeft];
    [swipeLeft release];

-(void)swipe:(UISwipeGestureRecognizer *)g{
    if (g.direction == UISwipeGestureRecognizerDirectionRight) {
        [self prevPage];
    } else {
        [self nextPage];
    }
}

UISwipeGestureRecognizer 是UIGestureRecognizer的子类，还有以下几个：

UITapGestureRecognizer
UIPinchGestureRecognizer
UIRotationGestureRecognizer
UISwipeGestureRecognizer
UIPanGestureRecognizer
UILongPressGestureRecognizer