如何减慢 Swift 中的 MapView 动画？

Question

我有一行 Swift 将地图的中心设置为点击的注释。

mapView.setCenter(annotation.coordinate, animated: true)

不过这个动画太快了。有没有办法让它慢下来？

Answer 1

您不需要在 UIView 动画函数中调用 setCenter(_:animated:), at this point. What you could do is to directly set a value for centerCoordinate：

// set your needed time per second, the current is 3.0 seconds
UIView.animate(withDuration: 3.0) { 
    self.mapView.centerCoordinate = annotation.coordinate
}