打印控件子视图

1 - (void)explode:(id)aView level:(int)aLevel {
2          for (int i = 0; i < aLevel; i++)
3                    printf("-");
4          printf("%s:%s/n",[[[aView class] description] UTF8String],[[[aView superclass] description] UTF8String]);
5         
6          for(UIView *subview in [aView subviews])
7                    [self explode:subview level:(aLevel + 1)];
8 }