如何在mapview中添加自定义标注视图

问题描述

我是objective-c中的mapkit新手。我可以在mapview中添加自定义注释。

I am new to mapkit in objective-c. I am able to add custom annotation in mapview.

我需要放置自定义标注视图，如下图所示

i need to place custom callout view like below image

。

但我没有得到如何设计这样的标注视图。

But i didn't get how can i design callout view like this.

我知道我需要在视图中为注释方法添加标注。

i know i need to add callout in view for annotation method.

- (MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation
{
    static NSString *AnnotationViewID = @"annotationViewID";

    MKAnnotationView *annotationView = (MKAnnotationView *)[mapview dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];

    if (annotationView == nil)
    {
        annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID] autorelease];
    }

    annotationView.image = [UIImage imageNamed:@"blue_without_pin.png"];
    annotationView.annotation = annotation;


    return annotationView;
}

推荐答案

这方面的一个解决方案是检测相对于父UIView选择的注释的确切坐标，然后直接在MKMapView的顶部绘制UIView。

One solution for this would be to detect the exact coordinate of the annotation selected relative to the parent UIView and then drawing a UIView directly on top of the MKMapView.

这是一个可能有帮助的片段：

Here's a snippet that might help:

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
    CGPoint pointInMap = [self.mapView convertCoordinate:buildingAnnotation.coordinate
                                           toPointToView:self.view];

    // Hide the default callout generated by MKMapView

    [mapView deselectAnnotation:view.annotation animated:NO];

    // Create a custom callout view and center the arrow on the pointInMap CGPoint
}

这篇关于如何在mapview中添加自定义标注视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！