iphone - 如何遍历 UIView 的所有 subview 及其 subview 及其 subview

Question

如何遍历 UIView 的所有 subview ，以及它们的 subview 和它们的 subview ？

Answer 1

使用递归:

// 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];