Swift-UIDynamic初见

 1 import UIKit
 2 
 3 class ViewController: UIViewController {
 4 
 5     @IBOutlet weak var dview: UIView!
 6     var dynamicAnimator = UIDynamicAnimator();
 7     override func viewDidLoad() {
 8         super.viewDidLoad()
 9         // Do any additional setup after loading the view, typically from a nib
10         dynamicAnimator = UIDynamicAnimator(referenceView: self.view);
11         // 創建并添加重力行為
12         let gravityBehavior = UIGravityBehavior(items: [self.dview]);
13         dynamicAnimator.addBehavior(gravityBehavior);
14         
15         // 創建并添加碰撞行為
16         let collisionBehavior = UICollisionBehavior(items: [self.dview]);
17         collisionBehavior.translatesReferenceBoundsIntoBoundary = true;
18         dynamicAnimator.addBehavior(collisionBehavior);
19     }
20 
21     override func didReceiveMemoryWarning() {
22         super.didReceiveMemoryWarning()
23         // Dispose of any resources that can be recreated.
24     }
25     override func viewDidAppear(animated: Bool) {
26         super.viewDidAppear(animated);
27         
28     }
29 
30 }