我想点击view,然后view放大至全屏
UIView beginAnimations:@"imageViewBig" context:nil];
UIView setAnimationDuration:0.5];
carousel currentItemView].alpha = 1.0;
carousel currentItemView].frame = CGRectMake(0,500, 1024, 768);
carousel currentItemView].center = CGPointMake(512, 381);
UIView commitAnimations];
这个代码实现不了 应该怎么做呢 求解