NSObject所包含的信息。

1. 地址：（返回的地址是10进制数）(0x: 0x3e24b20）
NSString *curAddress = [NSString stringWithFormat:@"%id",curTextField];

2.描述：（返回对象详细信息，不同类型对象，信息不同）
[tempView description]；以下为返回信息：

<UILayoutContainerView: 0x3e24a80; frame = (0 0; 320 480); autoresize = W+H; layer = <CALayer: 0x3e24b20>>

<UINavigationTransitionView: 0x3e24d80; frame = (0 0; 320 480); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x3e0fee0>>

<UIViewControllerWrapperView: 0x3e7ced0; frame = (0 64; 320 416); autoresize = RM+BM; layer = <CALayer: 0x3e75c30>>

<UIView: 0x3ea3290; frame = (0 0; 320 416); autoresize = RM+BM; layer = <CALayer: 0x3ea6970>>

<UILabel: 0x3ea1820; frame = (20 25; 21 21); text = '0'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; userInteractionEnabled = NO; layer = <CALayer: 0x3ea6ce0>>

 处理描述信息：可用：- (BOOL)hasPrefix:(NSString *)aString;
- (BOOL)hasSuffix:(NSString *)aString; 取得开有和结尾的字符串，判断对象所属的私有类型；

 可以用：NSClassFromString(@"MKUserLocationView") alloc] initWith...来创建该类型对象。