打印frame
p ＝ print打印值
po = print object 打印对象的decryption信息
(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
(UIView *) $13 = 0x1e184400
打印frame p (CGRect)[uiTextFieldObj
frame]