UITableView滑动动画+FPSLabel

　　 cell.contentView.alpha = 0.3;
    CGAffineTransform transformScale = CGAffineTransformMakeScale(0.3,0.8); //缩放
    CGAffineTransform transformTranslate = CGAffineTransformMakeTranslation(0.5, 0.6);//改变位置
    
    cell.contentView.transform = CGAffineTransformConcat(transformScale, transformTranslate);
    [tableView bringSubviewToFront:cell.contentView];
    [UIView animateWithDuration:.4f
                          delay:0.05
                        options:UIViewAnimationOptionAllowUserInteraction
                     animations:^{
                         
                         cell.contentView.alpha = 1;
                         
                         //清空 transform
                         
                         cell.contentView.transform = CGAffineTransformIdentity;
                     } completion:nil];