我有一个看起来像这样的视图层次结构:
UIView (A)
UIView > UIImageView
UIView > UIView (B)
UIView > UIView (B) > Rounded Rect Button
UIView > UIView (B) > UIImageView
UIView > UIView (B) > UILabel
我已将手势识别器附加到我的UIView(B)。我面临的问题是我没有对UIView(B)内的Rounded Rect Button采取任何操作。singleTap手势识别器捕获/覆盖按钮的“ Touch Up Inside”事件。
我该如何运作?我认为响应者链层次结构将确保将优先考虑按钮触摸事件,并且它将被触发!我想念什么?
以下是一些相关代码:
#pragma mark -
#pragma mark View lifecycle (Gesture recognizer setup)
- (void)viewDidLoad {
[super viewDidLoad];
// double tap gesture recognizer
UITapGestureRecognizer *dtapGestureRecognize = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapGestureRecognizer:)];
dtapGestureRecognize.delegate = self;
dtapGestureRecognize.numberOfTapsRequired = 2;
[self.viewB addGestureRecognizer:dtapGestureRecognize];
// single tap gesture recognizer
UITapGestureRecognizer *tapGestureRecognize = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapGestureRecognizer:)];
tapGestureRecognize.delegate = self;
tapGestureRecognize.numberOfTapsRequired = 1;
[tapGestureRecognize requireGestureRecognizerToFail:dtapGestureRecognize];
[self.viewB addGestureRecognizer:tapGestureRecognize];
// add gesture recodgnizer to the grid view to start the edit mode
UILongPressGestureRecognizer *pahGestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGestureRecognizerStateChanged:)];
pahGestureRecognizer.delegate = self;
pahGestureRecognizer.minimumPressDuration = 0.5;
[self.viewB addGestureRecognizer:pahGestureRecognizer];
[dtapGestureRecognize release];
[tapGestureRecognize release];
[pahGestureRecognizer release];
}
#pragma mark -
#pragma mark Button actions
- (IBAction)buttonTouchUpInside:(id)sender {
NSLog(@"%s, %@", __FUNCTION__, sender);
}
#pragma mark -
#pragma mark Gesture recognizer actions
- (void)singleTapGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer {
NSLog(@"%s", __FUNCTION__);
}
- (void)doubleTapGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer {
NSLog(@"%s", __FUNCTION__);
}
- (void)longPressGestureRecognizerStateChanged:(UIGestureRecognizer *)gestureRecognizer {
switch (gestureRecognizer.state) {
case UIGestureRecognizerStateEnded: {
NSLog(@"%s", __FUNCTION__);
break;
}
default:
break;
}
}
最简单的方法是设置cancelsTouchesInView = false
—
Bagusflyer