UIView.animateWithDuration(0.25) {
    var loc = ann.coordinate
    loc.latitude = loc.latitude + 0.0005
    loc.longitude = loc.longitude + 0.001
    ann.coordinate = loc
}

…其中ann是自定义注释,MyAnnotation.注释是跳跃,而不是动画,到新的坐标位置.

令人讨厌的事情是,如果我在Objective-C中编写MyAnnotation,动画效果会很好.但是如果我写在Swift,我再也不会得到动画了！

就在FYI,这里是MyExnotation的Swift代码：

class MyAnnotation : NSObject,MKAnnotation {
    var coordinate : CLLocationCoordinate2D
    var title: String!
    var subtitle: String!

    init(location coord:CLLocationCoordinate2D) {
        self.coordinate = coord
        super.init()
    }
}