用户点击时更改图钉颜色 [英] Change Pin Color when user tapped

问题描述

当用户固定修改标题和副标题时，我会将注释的颜色从红色更改为绿色.

I would change the color from red to green of an annotation when the user pin tapped addition to changing its title and subtitle.

我真的迷路了.我搜索了如何制作自定义注释图钉，确定.当用户触摸didSelectAnnotationView引脚时，我发现了该方法的实现，当我点击注释NSLog(@"Tap") ;时，该方法可以工作，但是现在我无法更改被触摸的引脚.

I am truly lost. I searched how to make a custom annotation pin, ok. I found the implementation of the method when the user touches the pin didSelectAnnotationView and it works when I tap the annotation NSLog(@"Tap") ; , but now I can not change the pin that was touched.

非常感谢大家的贡献.

Ciao

推荐答案

要设置图钉颜色，请使用

To set the pin color, make use of MKPinAnnotationView pinColor property.

MKPinAnnotationView *pin = [[MKPinAnnotationView alloc] init]
pin.pinColor = MKPinAnnotationColorGreen;

对于自定义注释图像，请设置image属性.

For custom annotation image, set the image property, as such.

UIImage *annImage = [UIImage imageNamed:@"AnnotationIcon.png"];
annView.image = annImage;

请注意如何为MKAnnotationView放置动画?

Do note that the MKPinAnnotationView animateDrop property will not work on custom images. There's a way to duplicate that animation though. See How do I animate MKAnnotationView drop?

更新 因此，基本上来说，如果您希望在被选中时从红色变为绿色，则可以执行此操作.

Update So bascially, you do this if you wanna change from red to green upon being selected.

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKPinAnnotationView *)view {
    view.pinColor = MKPinAnnotationColorGreen;

}

- (MKAnnotationView *)mapView:(MKMapView *)aMapView
            viewForAnnotation:(id)ann {

    NSString *identifier = @"myPin";
    MKPinAnnotationView *annView = (MKPinAnnotationView *)
    [aMapView dequeueReusableAnnotationViewWithIdentifier:identifier];
    if (annView == nil) {
        annView= [[[MKPinAnnotationView alloc] initWithAnnotation:ann
                                               reuseIdentifier:identifier]
               autorelease];
    } else {
        annView.annotation = ann;
    }
// you can define the properties here.

return annView;
}

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