将工具栏添加到导航控制器 - 颜色不匹配

发布于 2024-11-30 15:09:41 字数 584 浏览 1 评论 0原文

我使用以下代码向导航控制器添加多个按钮

UIToolbar* toolbar = [[UIToolbar alloc]
                      initWithFrame:CGRectMake(0, 0, 100, 44)];
toolbar.tintColor = [UIColor clearColor];
[toolbar setBarStyle: UIBarStyleBlackTranslucent];

...

问题是工具栏的背景与导航栏不 100% 匹配。工具栏顶部显示一条小线。颜色几乎相同，但如果仔细观察，您可以看到矩形...

我在委托中执行以下操作来设置导航栏的背景，

self.navigationController.navigationBar.tintColor =  [UIColor colorWithRed:.0 green:.0 blue:.0 alpha:.4];

有什么想法如何使背景颜色与导航栏颜色相匹配吗？

问题的屏幕截图

原文

I used following code to add multiple buttons to the navigation controller

UIToolbar* toolbar = [[UIToolbar alloc]
                      initWithFrame:CGRectMake(0, 0, 100, 44)];
toolbar.tintColor = [UIColor clearColor];
[toolbar setBarStyle: UIBarStyleBlackTranslucent];

...

The problem is the background of the toolbar does not match 100% to the navigation bar. There is a small line showing at the top of the toolbar. The color is almost the same but if you look carefully you can see the rectangle …

I do following in the delegate to set the background of the navigation bar

self.navigationController.navigationBar.tintColor =  [UIColor colorWithRed:.0 green:.0 blue:.0 alpha:.4];

any ideas how to get the background color to match the navigation bar color?

screen capture of the problem

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吖咩 2024-12-07 15:09:41

实现此目的的最佳方法是使工具栏完全透明。实现此目的的一种方法是子类化 UIToolbar 并重写 drawRect: 以不执行任何操作。

这是我的 UITransparentToolbar 实现（请注意，这假设工具栏将通过 xib 创建。）：

@implementation UITransparentToolbar

- (id)initWithCoder:(NSCoder *)decoder
{
    if ( self = [super initWithCoder:decoder] )
    {
        self.backgroundColor = [UIColor clearColor];
        self.opaque = NO;
        self.translucent = YES;

    }
    return self;
}

- (void)drawRect:(CGRect)rect 
{
}

- (void)dealloc 
{
    [super dealloc];
}

@end

The best way to make this work is to make the toolbar fully transparent. One way to do this is to subclass UIToolbar and override drawRect: to do nothing.

Here's my implementation of a UITransparentToolbar (note this assumes the toolbar will be created via a xib.):

@implementation UITransparentToolbar

- (id)initWithCoder:(NSCoder *)decoder
{
    if ( self = [super initWithCoder:decoder] )
    {
        self.backgroundColor = [UIColor clearColor];
        self.opaque = NO;
        self.translucent = YES;

    }
    return self;
}

- (void)drawRect:(CGRect)rect 
{
}

- (void)dealloc 
{
    [super dealloc];
}

@end

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