為什么點擊手勢識別器會識別其父視圖中視圖的水龍頭？

Question

我有一個UIView和一個輕敲手勢識別器：

UIImageView *tabView = [[UIImageView alloc] initWithFrame:CGRectMake(41, 145, 702, 100)];
tabView.image = [UIImage imageNamed:@"inactive_tab"];
tabView.userInteractionEnabled = YES;
UITapGestureRecognizer *singleFingerTap =
[[UITapGestureRecognizer alloc] initWithTarget:self
                                        action:@selector(handleSingleTap:)];
[tabView addGestureRecognizer:singleFingerTap];
[self.scrollView addSubview:tabView];

我在scrollview上添加了另一個視圖：

[self.scrollView addSubview:self.activeTab];

activeTab超過inactiveTap。 當我點擊activeTap時，手勢識別器會發射，我想不要發生這種情況。 我怎么能避免這個？

Answer 1

使用UIGestureRecognizerDelegate及其方法gestureRecognizer:shouldReceiveTouch: . 您可以檢查觸摸點是否在視圖框內，如果您不希望在該視圖上發生觸摸，則返回NO

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    CGPoint touchLocation = [touch locationInView:self.view];
    return !CGRectContainsPoint(self.activeTab.frame, touchLocation);
}