iPhone - 如何设置uinavigationbar高度？

Question

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过的,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).

[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];

Answer 1

使用自定义sizeThatFits创建UINavigationBar类别.

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

Answer 2

使用此导航栏子类,我已成功在iPad上的iOS 5.x到iOS 6.x上创建了一个更大的导航栏.这给了我一个更大的导航栏,但没有打破所有的动画.

static CGFloat const CustomNavigationBarHeight = 62;
static CGFloat const NavigationBarHeight = 44;
static CGFloat const CustomNavigationBarHeightDelta = CustomNavigationBarHeight - NavigationBarHeight;

@implementation HINavigationBar

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
//      UIColor *titleColor = [[HITheme currentTheme] fontColorForLabelForLocation:HIThemeLabelNavigationTitle];
//      UIFont *titleFont = [[HITheme currentTheme] fontForLabelForLocation:HIThemeLabelNavigationTitle];

//      [self setTitleTextAttributes:@{ UITextAttributeFont : titleFont, UITextAttributeTextColor : titleColor }];

        CGAffineTransform translate = CGAffineTransformMakeTranslation(0, -CustomNavigationBarHeightDelta / 2.0);
        self.transform = translate;
        [self resetBackgroundImageFrame];

    }
    return self;
}

- (void)resetBackgroundImageFrame
{
    for (UIView *view in self.subviews) {
        if ([NSStringFromClass([view class]) rangeOfString:@"BarBackground"].length != 0) {
            view.frame = CGRectMake(0, CustomNavigationBarHeightDelta / 2.0, self.bounds.size.width, self.bounds.size.height);
        }
    }
}

- (void)setBackgroundImage:(UIImage *)backgroundImage forBarMetrics:(UIBarMetrics)barMetrics
{
    [super setBackgroundImage:backgroundImage forBarMetrics:barMetrics];
    [self resetBackgroundImageFrame];
}

- (CGSize)sizeThatFits:(CGSize)size
{
    size.width = self.frame.size.width;
    size.height = CustomNavigationBarHeight;
    return size;
}

- (void)setFrame:(CGRect)frame
{
    [super setFrame:frame];
    [self resetBackgroundImageFrame];
}



@end

Answer 3

对于迅捷

创建Uinavigation栏的子类.

import UIKit

class higherNavBar: UINavigationBar {

override func sizeThatFits(size: CGSize) -> CGSize {
    var newSize:CGSize = CGSizeMake(self.frame.size.width, 87)
    return newSize
}

两侧将有两个空白条,我将宽度更改为确切的数字,以使其工作.

但是标题和后退按钮与底部对齐.

Answer 4

没有必要继承UINavigationBar.在Objective-C中,您可以使用类别,在Swift中,您可以使用扩展名.

extension UINavigationBar {
    public override func sizeThatFits(size: CGSize) -> CGSize {
        return CGSize(width: frame.width, height: 70)
    }
}

Answer 5

如果您想为导航栏使用自定义高度，我认为您至少应该使用自定义导航栏（而不是导航控制器中的导航栏）。隐藏 navController 的栏并添加您自己的栏。然后你可以将其高度设置为你想要的任何高度。