将其添加到地图时使用自定义注释 [英] Using a custom annotation when adding it to map

问题描述

在将自定义注记类添加到mapview时，我无法访问它。我有自定义类正常工作，但是当我将它添加到地图时，我不知道如何通过此委托访问自定义注释：

I'm having trouble accessing my custom annotation class when adding it to a mapview. I have the custom class working properly but i when i add it to the map i'm not sure how to access the custom annotation through this delegate:

- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation

我尝试过在线查找并没有找到任何东西。任何帮助都会很棒。

i've tried looking online and havent found anything. any help would be great.

它的调用如下：

CLLocationCoordinate2D coords = CLLocationCoordinate2DMake(shops.latitude, shops.longitude);
    AnnotationForId *shop = [[AnnotationForId alloc] initWithCoordinate:coords];
    //[[CLLocationCoordinate2DMake(shops.latitude, shops.longtitude)]];
    shop.title = shops.name;
    shop.subtitle = @"Coffee Shop";
    shop.shopId = shops.id;
    [map addAnnotation:shop];

推荐答案

这是简单示例如何创建自定义AnnotationView。

创建自定义 AnnotationView ：

#import <MapKit/MapKit.h>

@interface AnnotationView : MKPlacemark

@property (nonatomic, readwrite, assign) CLLocationCoordinate2D coordinate;

@property (nonatomic, strong) NSString *title;
@property (nonatomic, strong) NSString *subtitle;

// you can put here any controllers that you want. (such like UIImage, UIView,...etc)

@end

并在 .m文件

#import "AnnotationView.h"

@implementation AnnotationView

- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate addressDictionary:(NSDictionary *)addressDictionary
{
    if ((self = [super initWithCoordinate:coordinate addressDictionary:addressDictionary]))
    {
        self.coordinate = coordinate;
    }
    return self;
}

@end

//使用注释添加 #importAnnotationView.h在相关的 .m文件中：

// Use Annotation Add #import "AnnotationView.h" in your relevant .m file:

CLLocationCoordinate2D pCoordinate ;
pCoordinate.latitude = LatValue;
pCoordinate.longitude = LanValue;

// Create Obj Of  AnnotationView class  

AnnotationView *annotation = [[AnnotationView alloc] initWithCoordinate:pCoordinate addressDictionary:nil] ;

    annotation.title = @"I m Here";
    annotation.subtitle = @"This is Sub Tiitle";

[self.mapView addAnnotation:annotation];

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