iPhone - 如何设置uinavigationbar高度？

问题描述

我想让导航视图的顶部变小一些。你会如何实现这一目标？这是我到目前为止所尝试的，但正如你所看到的，即使我使导航栏变小，它曾经占据的区域仍然存在（黑色）。

I want to make the top of the navigation view a bit smaller. How would you achieve this? This is what I've tried so far, but as you can see, even though I make the navigationbar smaller, the area which it used to occupy is still there (black).

[window addSubview:[navigationController view]];
navigationController.view.frame = CGRectMake(0, 100, 320, 280);
navigationController.navigationBar.frame = CGRectMake(0, 0, 320, 20);
navigationController.view.backgroundColor = [UIColor blackColor];
[window makeKeyAndVisible];

推荐答案

使用自定义sizeThatFits创建UINavigationBar类别。

Create a UINavigationBar Category with a custom sizeThatFits.

@implementation UINavigationBar (customNav)
  - (CGSize)sizeThatFits:(CGSize)size {
    CGSize newSize = CGSizeMake(self.frame.size.width,70);
    return newSize;
  }
@end

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