ios - MKAnnotationView 的 subview 上的 UITapGestureRecognizer 不起作用

Question

我正在尝试添加点击识别器以显示附加信息标注。我尝试直接调用选择器“showPersonInfo”并且它正在工作。但是，当我尝试将它添加到我正在处理的 MKAnnotationView 的 subview 上的 UITapGestureRecognizer 中时。当我点击时，选择器没有触发。

此代码在 MKAnnotationView 的子类的 .m 中

- (void)layoutSubviews {

    [self addSubView:self.imageContainerView];

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showPersonInfo:)];
    [self.imageContainerView addGestureRecognizer:tap];

}

- (void)showPersonInfo:(UITapGestureRecognizer *)tap {

    NSLog(@"annotation imageView touched");
    [self addSubview:self.personInfoView];

}

Answer 1

您可以使用 mapView Delegate 方法向注释 View 添加操作

 - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
    {
        if (annotation == mapView.userLocation)
            return nil;

        static NSString *s = @"identifier";
        MKAnnotationView *pin = [mapView dequeueReusableAnnotationViewWithIdentifier:s];
        if (!pin) {
            pin = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:s];
            pin.canShowCallout = YES;
            pin.image = [UIImage imageNamed:@"pin.png"];
            pin.calloutOffset = CGPointMake(0, 0);
            UIButton *button = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
            [button addTarget:self
                       action:@selector(showPersonInfo:) forControlEvents:UIControlEventTouchUpInside];
            pin.rightCalloutAccessoryView = button;
        }
        return pin;
    }