我刚刚从Apple Maps切换到Google Maps.我似乎找不到答案的问题是,如何使GMSMarker的图标从中心开始,而不是从图像的底部开始.
我的意思是,当前位置点图标以其要表达的坐标为中心开始.不过,GMSMarkers图标从图标的底部开始.
解决方法
您可以使用属性groundAnchor更改您的标记图标的开始位置.
Google Maps SDK for iOS文档:
The ground anchor specifies the point in the icon image that is
anchored to the marker’s position on the Earth’s surface. This point
is specified within the continuous space [0.0,1.0] x [0.0,1.0],
where (0,0) is the top-left corner of the image,and (1,1) is the
bottom-right corner.
例:
The below example rotates the marker 90°. Setting the groundAnchor
property to 0.5,0.5 causes the marker to be rotated around its center,
instead of its base.
CLLocationCoordinate2D position = CLLocationCoordinate2DMake(51.5,-0.127); CLLocationDegrees degrees = 90; GMSMarker *london = [GMSMarker markerWithPosition:position]; london.groundAnchor = CGPointMake(0.5,0.5); london.rotation = degrees; london.map = mapView_;
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