http://blog.csdn.net/youshaoduo/article/details/53203211
[UIView animateWithDuration:0.3 delay:0.1 usingSpringWithDamping:0.6 initialSpringVelocity:3.0 options:UIViewAnimationOptionCurveLinear animations:^{
__weakSelf.articleBtn.y = yPositio;
} completion:^(BOOL finished) {
self.userInteractionEnabled=YES;
}];
-----------------------
定时器造成 cpu 占用过高 AdvertSliderCell