打印frame
(lldb) po
self.view
<UITableView: 0x1e184400; frame = (0 0; 320 455);
clipsToBounds = YES; opaque = NO; autoresize = W+H; autoresizesSubviews = NO;
gestureRecognizers = <NSArray: 0x1dda0730>; animations = {
bounds=<CABasicAnimation: 0x1f0b69f0>; }; layer = <CALayer:
0x1dd9ff60>; contentOffset: {0,
0}>
(lldb) print
self.view
原文：http://www.cnblogs.com/Juniorchen/p/3622478.html