效果圖
直接上代碼
[_likeBtn setImage:_IMG(@"ProLikeNor") forState:UIControlStateNormal];
CAKeyframeAnimation * animation = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale"];
animation.values = @[@(0.1),@(1.0),@(1.5)];
animation.keyTimes = @[@(0.0),@(0.5),@(0.8),@(1.0)];
animation.calculationMode = kCAAnimationLinear;
[self.likeBtn.layer addAnimation:animation forKey:@"SHOW"];
