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44 @interface ViewController UIViewController @property weak nonatomic IBOutlet UIButton btnBasic @property nonatomic strong UIView basicView @end @interface ViewController @end @implementation ViewController viewDidLoad super viewDidLoad didReceiveMemoryWarning super didReceiveMemoryWarning IBActionbtnBasic_OnClickUIButton sender _basicView UIView allocinitWithFrameCGRectMake _basicView. UIColor whiteColor self. addSubview_basicView NSLog@ CABasicAnimation animation CABasicAnimation animation animation. idUIColor blueColor. animation. animation. YES _basicView. addAnimationanimation forKey@ @end