问如何遍历UIView的所有子视图，以及它们的子视图和子视图

EN

// UIView+HierarchyLogging.h
@interface UIView (ViewHierarchyLogging)
- (void)logViewHierarchy;
@end

// UIView+HierarchyLogging.m
@implementation UIView (ViewHierarchyLogging)
- (void)logViewHierarchy
{
    NSLog(@"%@", self);
    for (UIView *subview in self.subviews)
    {
        [subview logViewHierarchy];
    }
}
@end

// In your implementation
[myView logViewHierarchy];

// UIView+viewRecursion.h
@interface UIView (viewRecursion)
- (NSMutableArray*) allSubViews;
@end

// UIView+viewRecursion.m
@implementation UIView (viewRecursion)
- (NSMutableArray*)allSubViews
{
   NSMutableArray *arr=[[[NSMutableArray alloc] init] autorelease];
   [arr addObject:self];
   for (UIView *subview in self.subviews)
   {
     [arr addObjectsFromArray:(NSArray*)[subview allSubViews]];
   }
   return arr;
}
@end

//disable all text fields
for(UIView *v in [self.view allSubViews])
{
     if([v isKindOfClass:[UITextField class]])
     {
         ((UITextField*)v).enabled=NO;
     }
}

extension UIView {
    var allSubviews: [UIView] {
        return self.subviews.flatMap { [$0] + $0.allSubviews }
    }
}