具有自定义高度的自定义UINavigationBar会导致UIBarButtonItem定位错误 [英] Custom UINavigationBar with custom height causes the UIBarButtonItem's to be positioned wrong

问题描述

我创建了自己的UINavigationBar子类，以便启用高于44pxs的自定义背景。

I created my own subclass of UINavigationBar in order to enable custom background that is taller than 44pxs.

我是通过覆盖这两种方法来实现的：

I did it by overriding these two methods:

-(void) drawRect:(CGRect)rect
{
    [self.backgroundImage drawInRect:CGRectMake(0, 0, self.backgroundImage.size.width, self.backgroundImage.size.height)];
}

- (CGSize)sizeThatFits:(CGSize)size 
{
    CGRect frame = [UIScreen mainScreen].applicationFrame;
    CGSize newSize = CGSizeMake(frame.size.width , self.backgroundImage.size.height);
    return newSize;
}

这就是结果：

现在，我可以看到的问题是所有UIBarButtonItem（和titleView）都放在导航栏的底部。

Now, my problem as you can see is that all the UIBarButtonItem's (and the titleView) are placed at the bottom of the navigation bar.

我希望它们是固定在栏的顶部（当然有一些填充）。
为了达到这个目的，我需要覆盖什么？

I would like them to be pinned to the top of the bar (with some padding of course). What to I need to override to achieve that?

谢谢！

编辑：

这是我使用的解决方案：

This is the solution that I used:

-(void) layoutSubviews
{
    [super layoutSubviews];
    for (UIView *view in self.subviews)
    {
        CGRect frame = view.frame;
        frame.origin.y = 5;
        view.frame = frame;
    }
}

空闲状态的诀窍，还是有些奇怪推送和弹出项目的行为。

Does the trick for idle state, still have some weird behavior on push and pop items.

推荐答案

尝试覆盖 layoutSubviews ：在里面调用 [super layoutSubviews] ，然后重新定位项目。

Try to override layoutSubviews: call [super layoutSubviews] inside and then reposition the items.

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