遍历subviews

NSString *xml = [self digView:self.view];
[xml writeToFile:@"/Users/frankhou/Desktop/view.xml"
atomically:YES
encoding:NSUTF8StringEncoding
error:nil];

- (NSString *)digView:(UIView *)view
{
if ([view isKindOfClass:[UITableViewCell class]]) return @"";
// 1.初始化
NSMutableString *xml = [NSMutableString string];

//2.标签开头
[xml appendFormat:@"<%@ frame=\"%@\"", view.class, NSStringFromCGRect(view.frame)];
if (!CGPointEqualToPoint(view.bounds.origin, CGPointZero)) {
[xml appendFormat:@" bounds=\"%@\"", NSStringFromCGRect(view.bounds)];
}
if ([view isKindOfClass:[UIScrollView class]]) {
UIScrollView *scroll = (UIScrollView *)view;
if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, scroll.contentInset)) {
[xml appendFormat:@" contentInset=\"%@\"", NSStringFromUIEdgeInsets(scroll.contentInset)];
}
}

//3.判断是否要结束
if (view.subviews.count == 0) {
[xml appendString:@" />"];
return xml;
} else {
[xml appendString:@">"];
}

//4.遍历所有子控件
for (UIView*child in view.subviews) {
NSString *childXml = [self digView:child];
[xml appendString:childXml];
}

//5.标签结尾
[xml appendFormat:@"</%@>", view.class];

return xml;
}