ios - 在 leftCalloutAccessoryView Map Xcode 中显示不同的图像

Question

我试图在 Xcode (objetive-c) 上的每个 map 图钉中的 leftCalloutAccessoryView 中获取不同的图像。我在互联网上寻找其他回复，但没有找到这个(只有如何更改图钉图像)。但我想更改图钉内图钉标题左侧的图像。有人能帮我吗？非常感谢。

这是我的 RestMapPin.h

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface RestMapPin : NSObject <MKAnnotation> {
    CLLocationCoordinate2D coordinate;
    NSString *title;
    NSString *subtitle;
}

@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@property (nonatomic, copy) NSString *image;

@end

这是我的 RestMapPin.m:

#import "RestMapPin.h"

@implementation RestMapPin
@synthesize  coordinate, title, subtitle, image;

@end

这是我的 MapViewController.h:

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>

@interface MapViewController : UIViewController {
    MKMapView *mapView;
}

@property (weak, nonatomic) IBOutlet UIBarButtonItem *barButton;
@property (nonatomic, retain) IBOutlet MKMapView *mapView;
@property(nonatomic, retain) CLLocationManager *locationManager;

@end

这是我的 MapViewController.m:

#import "MapViewController.h"
#import "SWRevealViewController.h"
#import "RestMapPin.h"
#import "RestViewController.h"

@interface MapViewController ()

@end

@implementation MapViewController

@synthesize mapView;

- (void)viewDidLoad {
    [super viewDidLoad];

    _barButton.target = self.revealViewController;
    _barButton.action = @selector(revealToggle:);

    [self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];

/*Babelia*/
    MKCoordinateRegion region_Babelia = { {0.0, 0.0}, {0.0, 0.0}};
    region_Babelia.center.latitude = 40.4234778;
    region_Babelia.center.longitude =  -3.686283000000003;
    region_Babelia.span.longitudeDelta = 0.1f;
    region_Babelia.span.latitudeDelta = 0.1f;
    [mapView setRegion:region_Babelia animated:YES];

    RestMapPin *ann_Babelia = [[RestMapPin alloc] init];
    ann_Babelia.title = @"Babelia";
    ann_Babelia.subtitle = @"Barrio de Salamanca";
    ann_Babelia.coordinate = region_Babelia.center;
    [mapView addAnnotation:ann_Babelia];

    /*Bacira*/
    MKCoordinateRegion region_Bacira = { {0.0, 0.0}, {0.0, 0.0}};
    region_Bacira.center.latitude = 40.43375390000001;
    region_Bacira.center.longitude =  -3.699036299999989;
    region_Bacira.span.longitudeDelta = 0.1f;
    region_Bacira.span.latitudeDelta = 0.1f;
    [mapView setRegion:region_Bacira animated:YES];

    RestMapPin *ann_Bacira = [[RestMapPin alloc] init];
    ann_Bacira.title = @"Bacira";
    ann_Bacira.subtitle = @"Chamberí";
    ann_Bacira.coordinate = region_Bacira.center;
    [mapView addAnnotation:ann_Bacira];
}

-(MKAnnotationView *)mapView:(MKMapView *)mV viewForAnnotation:(id <MKAnnotation>)annotation
{
    MKAnnotationView *pinView = nil;
    if(annotation != mapView.userLocation) {
        static NSString *defaultPinID = @"com.invasivecode.pin";
        pinView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
        if ( pinView == nil )
            pinView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID];

        pinView.canShowCallout = YES;
        pinView.image = [UIImage imageNamed:@"pin2@2x.png"];
    }
    else {
        //[mapView.userLocation setTitle:@"I am here"];
    }

    UIImageView *leftIconView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"pin2@2x.png"]];
    pinView.leftCalloutAccessoryView = leftIconView;
    leftIconView.layer.cornerRadius = 6;
    leftIconView.clipsToBounds = YES;
    leftIconView.layer.borderWidth = 1;

    return pinView;
}

@end

我知道这与 viewForAnnotation 方法中的代码类似:

UIImageView *leftIconView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"pin2@2x.png"]];
        pinView.leftCalloutAccessoryView = leftIconView;

但我不知道如何将其更改为每个 map 图钉(“Babelia”和“Bacira”)都不同。 非常感谢您的回复!

Answer 1

  @interface RestMapPin : NSObject <MKAnnotation>
  {
    CLLocationCoordinate2D coordinate;
    NSString *title;
    NSString *subtitle;
    NSString *pincolor;
  }

@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@property (nonatomic, copy) NSString *pincolor;
@property (nonatomic, copy) NSString *image;

给引脚值

ann_Bacira. pincolor = @“red”;
ann_Babelia.pincolor  = “green”;


   -(MKAnnotationView *)mapView:(MKMapView *)mV viewForAnnotation:(id <MKAnnotation>)annotation
   {
     MKAnnotationView *pinView = nil;
     UIImage *objImage = nil;
     if(annotation != mapView.userLocation) 
    {
     static NSString *defaultPinID = @"com.invasivecode.pin";
     pinView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
     if ( pinView == nil )
        pinView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID];

     pinView.canShowCallout = YES;
    if([annotation.pincolor isEqualToString:@"green"])
    {
     objImage =[UIImage imageNamed:@“image1@2x.png"]
    }
    else if([annotation.pincolor isEqualToString:@"red"])
    {
    objImage =[UIImage imageNamed:@“image2@2x.png"]
    }

    pinView.image = objImage;
    }
   else {
    //[mapView.userLocation setTitle:@"I am here"];
     }
    return pinView;
    }