正在尝试自定义注解别针

Question

我正在尝试将标注附件添加到一些现有代码中。下面是我的注释主代码：

OTNVenueAnnotation *annotation = [[OTNVenueAnnotation alloc] init];
annotation.coordinate = CLLocationCoordinate2DMake(location.latitude, location.longitude);
annotation.title = [[venue objectForKey:@"name"] uppercaseString];
annotation.venue = venue;

MKPinAnnotationView* customPinView = [[MKPinAnnotationView alloc]
                                      initWithAnnotation:annotation];

UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        [rightButton addTarget:self
                        action:@selector(showDetails:)
              forControlEvents:UIControlEventTouchUpInside];
        customPinView.rightCalloutAccessoryView = rightButton;   

[self.mapView addAnnotation: annotation];

生成错误是：'MKPinAnnotationView‘没有可见的@接口声明了选择器'initWithAnnotation:’

Answer 1

方法名为initWithAnnotation:reuseIdentifier:

您需要在初始化时为注释视图提供一个NSString作为重用标识符参数。

MKPinAnnotationView *customPinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
                                                                     reuseIdentifier:@"identifier"];