将MKAnnotation坐标转换为视图坐标 [英] Convert MKAnnotation Coordinates to View Coordinates

问题描述

当用户点击图钉时，我正在显示自定义UIView（如Zillow应用程序）。现在问题是我需要将视图放在实际引脚的正上方。 MKAnnotationView坐标系与地图相关。如何获取相对于iPhone屏幕的坐标，然后将我的视图放在该坐标上。

I am displaying a custom UIView when the user clicks on the pin (Like the Zillow app). Now the problem is that I need to place the view right above the actual pin. The MKAnnotationView coordinates system is related to the map. How can I get the coordinates with respect to the iPhone screen and then place my view on that coordinate.

- (void)mapView:(MKMapView *)mv didSelectAnnotationView:(MKAnnotationView *)view
{  
    // get view from storyboard 
    ZillowSearchResultAnnotation *annotation = (ZillowSearchResultAnnotation *) view.annotation;

    PropertyAbstractViewController *propertyAbstractViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PropertyAbstractIdentifier"];
    propertyAbstractViewController.view.frame = CGRectMake(0, 0, 100, 100);

    [propertyAbstractViewController bind:annotation.data];

    [mv addSubview:propertyAbstractViewController.view];

}

推荐答案

使用< a href =http://developer.apple.com/library/ios/DOCUMENTATION/MapKit/Reference/MKMapView_Class/MKMapView/MKMapView.html#//apple_ref/occ/instm/MKMapView/convertCoordinate%3atoPointToView%3a> convertCoordinate ：toPointToView：。类似于：

UIView *view = ...
CGPoint p = [mv convertCoordinate:annotation.coordinate toPointToView:mv];
CGRect frame = CGRectMake(p.x,p.y,view.frame.size.width,view.frame.size.height);
view.frame = frame;
[self.view addSubView:view];

这篇关于将MKAnnotation坐标转换为视图坐标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IT屋！