允许在没有标注附件视图的情况下点击注释标注上的任何位置 [英] Allow tapping anywhere on an annotation callout without a callout accessory view

问题描述

我有一个地图视图，或多或少添加这样的注释：

I have a map view that adds annotations more or less like this:

- (MKAnnotationView *)mapView:(MKMapView *)mapView
            viewForAnnotation:(id <MKAnnotation>) annotation
{
    MKAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
                                                                       reuseIdentifier:@"MKPinAnnotationView"];
    annotationView.canShowCallout = YES;

    UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    [detailButton addTarget:self
                     action:@selector(handleButtonAction)
           forControlEvents:UIControlEventTouchUpInside];
    annotationView.rightCalloutAccessoryView = detailButton;

    return annotationView;
}

在iOS 7中，这会在右侧显示i图标标注的一面。点击图标触发 mapView：annotationView：calloutAccessoryControlTapped：（在委托上）和 handleButtonAction：（自我）。不过，我最近才意识到你也可以点击标注上的其他任何地方，并且会触发相同的两种方法。

In iOS 7, this puts an "i" icon on the right-hand side of the callout. Tapping on the icon triggers mapView:annotationView:calloutAccessoryControlTapped: (on the delegate) and handleButtonAction: (on self). I recently realized, though, that you can also tap anywhere else on the callout and the same two methods are fired.

这种情况发生在<$ c $类型的按钮上c> UIButtonTypeDetailDisclosure 但似乎没有 UIButtonTypeCustom 按钮。当没有附件视图时点击标注时，也不会触发委托方法。 （当然，这种行为并不令人惊讶;令人惊讶的是，如果附件视图是详细信息泄露按钮，则无论您是点击按钮本身还是仅仅点击某处，这两种方法都会被解雇其他在标注中。）

This happens with a button of type UIButtonTypeDetailDisclosure but it doesn’t seem to happen with a UIButtonTypeCustom button. The delegate method is also not fired when I tap on the callout when there’s no accessory view at all. (That behavior isn’t surprising, of course; what’s surprising is that if the accessory view is a detail-disclosure button then these two methods are fired regardless of whether you tap on the button itself or just somewhere else in the callout.)

我想摆脱标注中的按钮 - 或者至少用显示我自己的图像的按钮替换它而不是库存我图标 - 同时仍然允许用户点击标注上的任何位置来触发我的操作。这可能吗？我没有看到对应于callout tapped的 MKMapViewDelegate 方法。

I’d like to get rid of the button in the callout—or at least replace it with a button showing my own image instead of the stock "i" icon—while still allowing the user to tap anywhere on the callout to trigger my action. Is this possible? I don’t see an MKMapViewDelegate method that corresponds to "callout tapped".

推荐答案

尝试为按钮设置自定义图像而不更改 UIButtonTypeDetailDisclosure 类型。

Try to set custom image for button without changing UIButtonTypeDetailDisclosure type.

UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];        
[detailButton setImage:[UIImage imageNamed:@"icon"] forState:UIControlStateNormal];

对于iOS7及以上版本，此图像默认会着色。如果你想保留原始图标，请使用以下

For iOS7 and above this image will be tinted by default. If you want to keep original icon use the following

[[UIImage imageNamed:@"icon"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]

或者如果你想删除图标

[detailButton setImage:[UIImage new] forState:UIControlStateNormal];

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