OC 给BUTTON增加简单动画效果

#import@interface TanButton : UIButton

@property (nonatomic,assign)CGFloat originX;

@property (nonatomic,assign)CGFloat originY;

@end

#import "TanButton.h"

@implementation TanButton

-(instancetype)init{    

self=[super init];    

    if (self) {         

       _originX = self.frame.origin.x; 

       _originY = self.frame.origin.y;    

    self.layer.cornerRadius=5.0;

//        [self setImage:[UIImage imageNamed:@"赞"] forState:UIControlStateNormal];   

 }   

 return self;

}