我正在将MKMapkit用于我的应用程序中的地图剖面。
我必须将钉图

By default, the center point of an annotation view is placed at the
coordinate point of the associated annotation. You can use this
property to reposition the annotation view as needed. This x and y
offset values are measured in pixels. Positive offset values move the
annotation view down and to the right, while negative values move it
up and to the left.