objective-c - UIBarButtonItem 和 UIGestureRecognizer

Question

我有一个 UIView我在哪里添加了 UITapGestureRecognizer :

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
tapRecognizer.numberOfTapsRequired=1;
tapRecognizer.numberOfTouchesRequired=1;
[self.myView addGestureRecognizer:tapRecognizer];

然后我添加一个 UIToolBar带有 View 的按钮:

UIToolbar *topBar = [[UIToolbar alloc ]initWithFrame:CGRectMake(0, 0, self.myView.frame.size.width, 44)];
topBar.barStyle = UIBarStyleBlackTranslucent;

UIBarButtonItem *logout = [[UIBarButtonItem alloc] initWithTitle:@"Logout" style:UIBarButtonItemStyleBordered target:self action:@selector(logout)];

[topBar setItems:@[logout] animated:NO];

我在单击注销按钮时遇到问题，并且我的点击识别器会触发而不是我的注销操作。如果我单击并按住，则会触发注销操作(我猜点击识别器失败了，所以让按钮操作触发)。

按下按钮时如何不触发手势识别器？

Answer 1

刚遇到同样的问题。因为我不想引入容器 View (UIToolbar 应该覆盖我现有的 View )。在 Patrick.Ji 粗略指出的帮助下，我想出了这个:

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

不要忘记将手势的代表设置为 self

- (void)viewDidLoad {
    [super viewDidLoad];
    UITapGestureRecognizer *mainTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(mainTapGesture:)];
    mainTapGestureRecognizer.delegate = self;
    [self.view addGestureRecognizer:mainTapGestureRecognizer];
}