ios - 手势识别器并不总是被触发

Question

我正在尝试使 map 注释的标注气泡可点击(我希望标题可点击)。从我所看到的情况来看，没有什么好的方法可以做到这一点，所以我在 map 上实现了一个手势识别器，这样我就可以做一个 HitTest 来确定是否已经点击了标注。它在大多数情况下都可以正常工作，但有时手势识别器无法触发。

这是我的代码

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    UITapGestureRecognizer* calloutRecognizer = [[UITapGestureRecognizer alloc]
            initWithTarget:self action:@selector(calloutTapped:)];
    calloutRecognizer.cancelsTouchesInView = false;
    [self.mapView addGestureRecognizer:calloutRecognizer];
}


- (void)calloutTapped:(UITapGestureRecognizer *)gestureRecognizer
{
    CGPoint hitPoint = [gestureRecognizer locationInView:self.mapView];
    UIView *tappedView = [self.mapView hitTest:hitPoint withEvent:nil];
    // This passthrough button ends up consuming events in the callout
    // There seems to be no way to target it explicitly so we must check the class name of the view
    if([NSStringFromClass([tappedView class]) isEqualToString: @"_MKSmallCalloutPassthroughButton"]){
        if(self.mapView.selectedAnnotations.count > 0 ){
            [self clinicTappedForClinic:[self getClinicForAnnotation :self.mapView.selectedAnnotations[0]]];
        }
    }
}

我正在使用 iPhone 7 模拟器进行测试

Answer 1

将委托(delegate)添加到 tapGestureRecognizer:

//add <UIGestureRecognizerDelegate> to .h 

//add this where you create tapGestureRecognizer...
tapGestureRecognizer.delegate = self;


// check tapGestureRecognizer working or not properly 
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer 
    shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}