canShowCallout按钮不起作用

Question

我认为我的代码中有问题，但我找不到它。

我只想点击leftCalloutAccessoryView按钮切换视图，但我总是收到同样的错误：

NSInvalidArgumentException', reason: '
-[ThirdViewController showDetailView:]: unrecognized selector sent to instance

这是我的代码：

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
    if ([annotation isKindOfClass:[MKUserLocation class]])
    {
        return nil;
    }
    else
    {
        MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"loc"];
        annotationView.canShowCallout = YES;
        UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

        [detailButton addTarget:self action:@selector(showDetailView:) forControlEvents:UIControlEventTouchUpInside];
        annotationView.rightCalloutAccessoryView=detailButton;
        annotationView.enabled = YES;

        UIImage *image = [UIImage imageNamed:@"logo.jpeg"];
        UIImageView *imgView = [[UIImageView alloc] initWithImage:image];
        annotationView.leftCalloutAccessoryView = imgView;
        annotationView.image = [UIImage imageNamed:@"pin.png"];
        return annotationView;
    }
}
- (IBAction)detailButton:(UIButton *)sender
{
    ThirdViewController *infoView = [[ThirdViewController alloc] init];
    [self.navigationController pushViewController:infoView animated:YES];
    NSLog(@"pushed Button!!!!!!");

}

我的故事板上的小截图：

感谢您的帮助！

最好的问候CTS

Answer 1

在addTarget中，代码表示该按钮应调用方法showDetailView:：

[detailButton addTarget:self action:@selector(showDetailView:) forControlEvents...

但是没有这样的方法（这就是错误的含义）。

从以下位置更改此方法的名称：

- (IBAction)detailButton:(UIButton *)sender

为：

- (IBAction)showDetailView:(UIButton *)sender