手势识别器和按钮动作

Question

我有一个看起来像这样的视图层次结构：UIView (A)UIView > UIImageViewUIView > UIView (B)UIView > UIView (B) > Rounded Rect ButtonUIView > UIView (B) > UIImageViewUIView > 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__);}

Answer 1

在“ shouldReceiveTouch”方法中，应添加一个条件，如果触摸按钮，则该条件将返回NO。

这来自苹果的SimpleGestureRecognizers示例。

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {

    // Disallow recognition of tap gestures in the segmented control.

    if ((touch.view == yourButton)) {//change it to your condition

        return NO;

    }

    return YES;

}

希望对你有帮助

正如丹尼尔（Daniel）指出的那样，您必须遵守UIGestureRecognizerDelegate它才能正常工作。