UIBarButtonItem 的垂直对齐方式在横向模式下太低

Question

我使用以下代码向 UIToolbar (iPad) 添加标题：

- (void)setupToolbarItems {
if (!toolbarItems) {
    UIBarButtonItem *flexSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 386.0, 20.0)];
    titleLabel.autoresizingMask = (UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleWidth);
    titleLabel.textColor = [UIColor whiteColor];
    titleLabel.text = @"Hello";
    titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:20.0];
    titleLabel.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.5];
    titleLabel.shadowOffset = CGSizeMake(0.0, -1.0);
    titleLabel.textAlignment = UITextAlignmentCenter;
    titleLabel.backgroundColor = [UIColor clearColor];
    UIBarButtonItem *titleLabelItem = [[UIBarButtonItem alloc] initWithCustomView:titleLabel];
    toolbarItems = [[NSArray alloc] initWithObjects:flexSpacer, titleLabelItem, flexSpacer, nil];
    [titleLabel release];
    [flexSpacer release];
    [titleLabelItem release];
}

[self setItems:self.toolbarItems animated:NO];
}

纵向模式下一切正常，但在横向模式下标签太靠下。 UIBarButtonItem 不是视图，因此据我所知，我无法从代码中调整其位置......我该如何解决这个问题？

---

肖像：

风景：

Answer 1

将 UIViewAutoresizingFlexibleHeight 添加到您的 titleView。你不会让它缩小标签。