我正在研究显示背景图像的自定义注释视图，其中包含自定义图像。我的代码基于：Custom MKAnnotationView with frame,icon and image 而我的实际代码是：
else if ([annotation isKindOfClass:[ImagePin class]]){
static NSString *identifierImage = @"ImagePinLocation";
MKAnnotationView *annotationImageView = (MKAnnotationView *) [self.mapView dequeueReusableAnnotationViewWithIdentifier:identifierImage];
if(annotationImageView){
return annotationImageView;
}
else {
annotationImageView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifierImage];
annotationImageView.canShowCallout = YES;
annotationImageView.image = [UIImage imageNamed:@"image_bg_mappa"];
UIImage *frame = [UIImage imageNamed:@"image_bg_mappa"];
ImagePin *imagePinImage = annotation;
NSLog(@"%@", [NSString stringWithFormat:@"%@", imagePinImage.image]);
NSString *urlStringForImage = [NSString stringWithFormat:@"%@", imagePinImage.image];
NSURL *urlForImage = [NSURL URLWithString:urlStringForImage];
UIImageView *imageView = [[UIImageView alloc] init];
[imageView setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@", urlForImage]] placeholderImage:[UIImage imageNamed:@"avatar-placeholder.png"]];
UIGraphicsBeginImageContext(CGSizeMake(annotationImageView.image.size.width, annotationImageView.image.size.height));
[frame drawInRect:CGRectMake(0, 0, frame.size.width, frame.size.height)];
[imageView.image drawInRect:CGRectMake(2, 2, 48, 38)]; // the frame your inner image
annotationImageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton addTarget:self action:@selector(writeSomething:) forControlEvents:UIControlEventTouchUpInside];
[rightButton setTitle:@"" forState:UIControlStateNormal];
annotationImageView.canShowCallout = YES;
annotationImageView.rightCalloutAccessoryView = rightButton;
annotationImageView.enabled = YES;
return annotationImageView;
}
}
然后我有两种方法：
(void)writeSomething {
}
(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control {
}
但：
- 不显示我的 rightButton 标注（不显示按钮）
- 我更喜欢当我点击完整的图像/注释时，它会调用 mapView annotationView 方法。
我该怎么做？为什么当我点击注释时，它没有调用我的 calloutAccessoryControlTapped 方法？在这张地图中，我还有更多不同类型的引脚（mkpinannotation），并且工作正常（calloutAccessoryControlTapped 方法也适用于这些引脚）。问题出在哪里 ？谢谢大家，很抱歉我的英语不好（我正在学习它）。
编辑：我的 viewForAnnotation 方法的完整代码：https ://gist.github.com/anonymous/6224519e308d6bf56c4c MKPinAnnotation 工作正常。
编辑： 这是我的 ImagePin.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface ImagePin : NSObject <MKAnnotation>
- (id)initWithImage:(NSString*)image imagebeachId:(NSString*)imagebeachId coordinate:(CLLocationCoordinate2D)coordinate;
//- (MKMapItem*)mapItem;
@property (nonatomic, copy) NSString *imagebeachId;
@property (nonatomic, copy) NSString *image;
@property (nonatomic, assign) CLLocationCoordinate2D theCoordinate;
@end
还有我的 ImagePin.m
#import "ImagePin.h"
#import <AddressBook/AddressBook.h>
@interface ImagePin ()
@end
@implementation ImagePin
@synthesize image = _image;
@synthesize imagebeachId = _imagebeachId;
@synthesize theCoordinate = _theCoordinate;
- (id)initWithImage:(NSString*)image imagebeachId:(NSString*)imagebeachId coordinate:(CLLocationCoordinate2D)coordinate {
if ((self = [super init])) {
//self.address = address;
self.image = image;
self.imagebeachId = imagebeachId;
self.theCoordinate = coordinate;
}
return self;
}
- (NSString *)title {
return @"";
}
- (NSString *)subtitle {
return _image;
}
- (CLLocationCoordinate2D)coordinate {
return _theCoordinate;
}
@end
编辑： 这是我添加注释的地方：
- (void)imagePositions:(NSDictionary *)responseData {
for (id<MKAnnotation> annotation in self.mapView.annotations) {
if ([annotation isKindOfClass:[ImagePin class]]){
//[self.mapView removeAnnotation:annotation];
}
}
for (NSArray *row in responseData) {
NSString * imageBeachId = [row valueForKey:@"id"];
NSNumber * latitude = [row valueForKey:@"lat"];
NSNumber * longitude = [row valueForKey:@"lng"];
NSString * imageBeach = [row valueForKey:@"fb_photo_url"];
CLLocationCoordinate2D coordinate;
coordinate.latitude = latitude.doubleValue;
coordinate.longitude = longitude.doubleValue;
ImagePin *annotation = [[ImagePin alloc] initWithImage:imageBeach imagebeachId:imageBeachId coordinate:coordinate];
[self.mapView addAnnotation:annotation];
}
}