如何遍历UIView的所有子视图及其子视图和子视图

Question

如何遍历UIView的所有子视图及其子视图和子视图？

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];

Answer 2

好了，这是我为UIView类使用递归和包装器（类别/扩展名）的解决方案。// 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用法：现在您应该遍历所有子视图并根据需要进行操作。//disable all text fieldsfor(UIView *v in [self.view allSubViews]){     if([v isKindOfClass:[UITextField class]])     {         ((UITextField*)v).enabled=NO;     }}

Answer 3

Swift 3中的解决方案，subviews不包含视图本身就提供了所有功能：extension UIView {var allSubViews : [UIView] {        var array = [self.subviews].flatMap {$0}        array.forEach { array.append(contentsOf: $0.allSubViews) }        return array    }}