如何将 UIPopoverView 显示为地图视图的注释?(iPad) [英] How do I display a UIPopoverView as a annotation to the map view? (iPad)

问题描述

在 iPad 中的地图应用程序上，当您点击图钉时，您会得到一个带有i"的普通注释，而不是显示指示符.进一步点击i"会显示一个像这样的弹出视图控制器.

On the maps app in the IPad when you tap a pin you get a normal annotation with an "i" instead of a disclosure indicator. A further tap on the "i" reveals a popover view controller like this.

有没有办法轻松实现这一点?

Is there a way to easily achieve this?

推荐答案

首先在地图上添加一个注解，在viewForAnnotation方法中，将rightCalloutAccessoryView设置为一个按钮类型，例如 UIButtonTypeDetailDisclosure(我认为默认情况下蓝色信息按钮不可用).

First add an annotation to the map and in the viewForAnnotation method, set the rightCalloutAccessoryView to a button of type, say, UIButtonTypeDetailDisclosure (I don't think the blue info button is available by default).

按下按钮将调用 calloutAccessoryControlTapped 委托方法.在此方法中，取消选择注释并显示您的弹出框.例如:

Pressing the button will call the calloutAccessoryControlTapped delegate method. In this method, deselect the annotation and show your popover. For example:

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
    [mapView deselectAnnotation:view.annotation animated:YES];

    YourContentViewController *ycvc = [[YourContentViewController alloc] init...
    UIPopoverController *poc = [[UIPopoverController alloc] initWithContentViewController:ycvc];
    [ycvc release];

    //hold ref to popover in an ivar
    self.annotationPopoverController = poc;

    //size as needed
    poc.popoverContentSize = CGSizeMake(320, 400);

    //show the popover next to the annotation view (pin)
    [poc presentPopoverFromRect:view.bounds inView:view 
        permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    [poc release];
}

YourContentViewController 是 UIViewController 的一个子类，您可以像任何其他视图控制器一样对其进行编码.地图应用看起来像是在内容中包含 UITableView.

YourContentViewController is a subclass of UIViewController which you can code like any other view controller. The Maps app looks like it has UITableView in the content.

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