单击/查看注释时使地图视图变暗
当单击注释时，是否可以使 Mapview 变暗/减少黑色背景上的 alpha（类似于在 JS/CSS 灯箱中查看图像）（这又会在地图的下部显示自定义视图（在 话，苹果会
如果有人做到了，如果可以的
拒绝这样的设计吗？谷歌地图暂时查看...
干杯。
Is it possible to make the Mapview darken/decrease the alpha over a black background (similar to viewing images in a JS/CSS lightbox) when a annotation is clicked (which in turn shows a custom View over the lower portion of the map (in essence a small details box).
If anyone has done it, if a snippet / rough idea could be given that would be great.
If it's possible, would apple reject such design? I dont see why they would however its potentially decreasing the view of the google maps view temporarily...
Cheers.
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您可以使用 MKMapViewDelegate 的委托方法来检测何时选择和取消选择注释。当选择时，就像你说的那样，减少 MKMapView 在黑色背景上的 alpha 值以变暗。或者，增加 MKMapView 顶部黑色覆盖层的 Alpha。取消选择注释后，您将恢复正常。我不认为这样的事情会被拒绝，但没有人能够 100% 肯定苹果的批准决定。
You can use the delegate methods of MKMapViewDelegate to detect when the annotations are selected and deselected. When selected, like you said, decrease the alpha of the MKMapView over a black background to darken. Alternatively, increase the alpha of a black overlay thats on top of the MKMapView. When annotation is deselected you go back to normal. I don't think something like this would be rejected but no one can ever be 100% positive of Apple's approval decisions.