14

我想将我当前的项目从 iOS 6 转换为 iOS 7。在 iOS 6 中,我的项目运行良好,但在 iOS 7 导航栏图像显示不正确。

我将此代码片段用于 iOS 6,

UIImage *imgNav = [UIImage imageNamed:@"navigation.png"];
self.navigationController.navigationBar.frame = CGRectMake(0, 0, 320, 44);
[self.navigationController.navigationBar setBackgroundImage:imgNav forBarMetrics:
     UIBarMetricsDefault];

如何在 iOS 7 中设置导航栏图像?

4

9 回答 9

31

尝试在 AppDelegate 中添加以下代码

[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigation.png"] 
                                   forBarMetrics:UIBarMetricsDefault];

这是斯威夫特版本:

UINavigationBar.appearance().setBackgroundImage(UIImage.init(named: "navigation.png"), forBarMetrics: UIBarMetrics.Default)

斯威夫特 3 版本:

UINavigationBar.appearance().setBackgroundImage(UIImage.init(named: "logo-dark.png"), for: UIBarMetrics.default)
于 2013-06-28T09:30:51.493 回答
15

对于 iOS 7:

[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navbar.png"] forBarMetrics:UIBarMetricsDefault];
于 2013-06-28T09:46:15.173 回答
5

使用这个简单的语法来改变Navigation Background简单的方式。

self.navigationController.navigationBar.barTintColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"YourImage.png"]];
self.navigationController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor whiteColor]};
于 2016-03-25T05:01:28.180 回答
4
if ([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)] )
{

    UIImage *image = [UIImage imageNamed:@"navigation.png"];
    [self.navigationController.navigationBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
}
于 2013-06-28T09:34:57.353 回答
3

故事板方式:

  1. 将图像视图拖到情节提要场景的底部栏上。
  2. 按住 Control 从场景列表左侧的导航项拖动到新创建的图像视图。
  3. 单击图像视图,并在属性中设置图像。
于 2014-03-03T00:14:04.883 回答
1

[[UINavigationBar 外观] setBackgroundImage:[UIImage imageNamed:@"navigation.png"] forBarMetrics:UIBarMetricsDefault];

如果您遵循 ios7 指南中提到的规则,它会起作用: • 如果您想要没有渐变的纯色,请创建 1 x 1 点图像。• 如果您想要垂直渐变,请创建一个宽度为 1 磅且高度与 UI 元素背景高度匹配的图像。• 如果要提供重复的纹理外观,则需要创建尺寸与纹理重复部分的尺寸相匹配的图像。• 如果要提供不重复的纹理外观,则需要创建尺寸与 UI 元素背景区域的尺寸相匹配的静态图像。

欲了解更多信息,请点击链接:
https ://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/ResizableImages.html#//apple_ref/doc/uid/TP40006556-CH30-SW1

于 2013-12-13T08:54:36.887 回答
1

就这样吧。。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // This will set the backGround image for all the Navigation Bars

    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigationBar"] forBarMetrics:UIBarMetricsDefault];



    return YES;
}
于 2014-06-25T09:15:34.393 回答
0
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{


    [[UINavigationBar appearance] setTitleTextAttributes: @{
                                                            UITextAttributeTextColor: [UIColor whiteColor],
                                                            UITextAttributeTextShadowColor: [UIColor clearColor],
                                                            UITextAttributeTextShadowOffset: [NSValue valueWithUIOffset:UIOffsetMake(0.0f, 1.0f)],
                                                            UITextAttributeFont: [UIFont fontWithName:@"AppleGothic" size:20.0f]
                                                            }];

 if([[[UIDevice currentDevice] systemVersion] floatValue] < 7.0)
    {


        [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigatio_for_ios6"] forBarMetrics:UIBarMetricsDefault];

        [[UINavigationBar appearance] setTitleVerticalPositionAdjustment:0.0 forBarMetrics:UIBarMetricsDefault];
    }
else
    {
        [[UINavigationBar appearance] setBarTintColor:UIColorFromRGB(0x067AB5)];

        // Uncomment to change the color of back button
        [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

        // Uncomment to assign a custom backgroung image
        [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigon_bg_ios7.png"] forBarMetrics:UIBarMetricsDefault];

        // Uncomment to change the back indicator image

        [[UINavigationBar appearance] setBackgroundColor:[UIColor whiteColor]];
        [[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@""]];

        // Uncomment to change the font style of the title

        NSShadow *shadow = [[NSShadow alloc] init];
        shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8];
        shadow.shadowOffset = CGSizeMake(0, 1);

        [[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:[UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0], NSForegroundColorAttributeName,shadow, NSShadowAttributeName,[UIFont fontWithName:@"HelveticaNeue-Bold" size:18.0], NSFontAttributeName, nil]];


        [[UINavigationBar appearance] setTitleVerticalPositionAdjustment:0.0 forBarMetrics:UIBarMetricsDefault];
    }



}
于 2014-06-10T05:36:03.117 回答
0

在 appDelegate 类中尝试此代码,它将对您有所帮助。

[[UINavigationBar appearance] setBackgroundImage:[[UIImage imageNamed:@"navbarimg.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)] forBarMetrics:UIBarMetricsDefault];
于 2017-03-30T17:00:55.467 回答