带有框架、图标和图像的自定义 MKAnnotationView [英] Custom MKAnnotationView with frame,icon and image

问题描述

我一直在寻找类似的解决方案，了解如何设计像这样的自定义 MKAnnotationView.

I've been searching for a similar solution on how to design a custom MKAnnotationView like this one.

我对 MKAnnotation 进行了子类化，并且能够添加一个名为 F.png 的图像F.png 是如图所示的帧图像.我想要的是添加一个内部图像.(我画的图中是蓝色的)

I'v subclassed the MKAnnotation and i was able to add an image named F.png the F.png is a frame image as showed in the picture. what i want is to add an inner image. (colored Blue in the picture i draw)

- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{    
if ([annotation isKindOfClass:[MKUserLocation class]])
    return nil;
static NSString* AnnotationIdentifier = @"AnnotationIdentifier";
MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
if(annotationView)
    return annotationView;
else
{
    MKAnnotationView *annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier];
    annotationView.canShowCallout = YES;
    annotationView.image = [UIImage imageNamed:[NSString stringWithFormat:@"F.png"]];        
    UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    [rightButton addTarget:self action:@selector(writeSomething:) forControlEvents:UIControlEventTouchUpInside];
    [rightButton setTitle:annotation.title forState:UIControlStateNormal];

    annotationView.rightCalloutAccessoryView = rightButton;
    annotationView.canShowCallout = YES;
    annotationView.draggable = NO;
    return annotationView;
}
return nil;
}

推荐答案

在你的代码中

else
{
    MKAnnotationView *annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier];
    annotationView.canShowCallout = YES;

    //change here
    annotationView.image = [UIImage imageNamed:[NSString stringWithFormat:@"F.png"]];  

    UIImage *frame = [UIImage imageNamed:[NSString stringWithFormat:@"F.png"];
    UIImage *image = theImageInFrameInner;

    UIGraphicsBeginImageContext(CGSizeMake(pin.size.width, pin.size.height));

    [frame drawInRect:CGRectMake(0, 0, frame.size.width, frame.size.height)];
    [image drawInRect:CGRectMake(2, 2, 60, 60)]; // the frame your inner image
    //maybe you should draw the left bottom icon here, 

    //then set back the new image, done
    annotationView.image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    [rightButton addTarget:self action:@selector(writeSomething:) forControlEvents:UIControlEventTouchUpInside];
    [rightButton setTitle:annotation.title forState:UIControlStateNormal];

    annotationView.rightCalloutAccessoryView = rightButton;
    annotationView.canShowCallout = YES;
    annotationView.draggable = NO;
    return annotationView;
}

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