Question

我有一席<代码>。缩略语 View。我试图在滚动观点中增加主人。护堤大火,但现在我的纽州没有工作。

我知道,在SOS5,UIScroll 观点在进行控制后,可以稍微把事情推向控制等级。任何人都能够帮助我了解如何做到这一点?

Answer 1

Set the UIGestureRecognizer property cancelsTouches inView to NO.

UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self 
                                                                                             action:@selector(singleTap:)];
singleTapGestureRecognizer.numberOfTapsRequired = 1;
singleTapGestureRecognizer.enabled = YES;
singleTapGestureRecognizer.cancelsTouchesInView = NO;
[tapableView addGestureRecognizer:singleTapGestureRecognizer];
[singleTapGestureRecognizer release];

http://developer.apple.com/library/IOs/#documentation/UIKit/Reference/UIGestureRecognizer_Class/Reference/Reference.html UIGestureRecognizer Level Reference

A Boolean value affecting whether touches are delivered to a view when a gesture is recognized.

When this property is YES (the default) and the receiver recognizes its gesture, the touches of that gesture that are pending are not delivered to the view and previously delivered touches are cancelled through a touchesCancelled:withEvent: message sent to the view. If a gesture recognizer doesn’t recognize its gesture or if the value of this property is NO, the view receives all touches in the multi-touch sequence.

Answer 2

对我来说,上述答复的星号是行之有效的。

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(userDidTap:)];
tapRecognizer.cancelsTouchesInView = YES;
tapRecognizer.delegate = self;
[tapRecognizer requireGestureRecognizersToFail:self.scrollView.gestureRecognizers];
[self.view addGestureRecognizer:tapRecognizer];

-

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.view.superview isKindOfClass:[UIButton class]] || [touch.view isKindOfClass:[UIButton class]])
    {
        return NO;
    }
    return YES;
}

Answer 3

您也可使用<代码> gestureRecognizer:shouldReceive Touch:。 ,以完成同样的事情。例如,如果你想要取消某些接触,而不是取消其他接触,那么它就提供了更大的灵活性。例如,

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.view.superview isKindOfClass:[UIButton class]]) return NO;

    return YES;
}

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