MapKit引脚上的注释未显示

时间:2012-03-08 14:52:54

标签: ios sdk annotations mapkit

我在地图上放置了两个图钉,每个图钉在点击时都有一个注释,但只显示StoreLocationOne的注释。地图上的两个图钉都在显示,但点击时没有显示StoreLocationTwo注释,有什么想法吗?

-(void)viewDidLoad {
    [super viewDidLoad];

    [mapview setMapType:MKMapTypeStandard];
    [mapview setZoomEnabled:YES];
    [mapview setScrollEnabled:YES];

    MKCoordinateRegion region = { {0.0, 0.0 }, {0.0, 0.0 } };
    region.center.latitude = 57.132053;
    region.center.longitude = -2.135592;
    region.span.longitudeDelta = 0.01f;
    region.span.latitudeDelta = 0.01f;
    [mapview setRegion:region animated:YES];

    StoreLocationOne *ann = [[StoreLocationOne alloc] init];
    ann.title = @"Heavenly Pizzas Mannofield";
    ann.subtitle = @"483a Great Western Rd, Aberdeen, AB10 6NN";
    ann.coordinate = region.center;
    [mapview addAnnotation:ann];

    MKCoordinateRegion region2 = { {0.0, 0.0 }, {0.0, 0.0 } };
    region2.center.latitude = 57.232458;
    region2.center.longitude = -2.347853;
    region2.span.longitudeDelta = 0.01f;
    region2.span.latitudeDelta = 0.01f;

    StoreLocationTwo *ann2 = [[StoreLocationTwo alloc] init];
    ann2.title2 = @"Heavenly Pizzas Kintore";
    ann2.subtitle2 = @"School Road, Kintore, AB51 0UU";
    ann2.coordinate = region2.center;
    [mapview addAnnotation:ann2];

}

1 个答案:

答案 0 :(得分:1)

必须准确命名titlesubtitle属性。地图视图无法查找title2subtitle2

您可以拥有多个实现MKAnnotation的类,但属性名称必须符合协议。

此外,如果您需要的只是属性coordinatetitlesubtitle,则可以使用内置注记类MKPointAnnotation而不是创建单独的每个坐标的类。