在Fox新闻iPhone应用程序中自定义UINavigationBar

2 回答

• 7

  对于福克斯新闻应用程序，它看起来只是设置导航栏的色调颜色 . 至于福克斯新闻标志，它是's probably just an image view on the title view of the navigation bar. This code goes into a view controller' s viewDidLoad 方法：

  [self.navigationController.navigationBar setTintColor:/* Custom color here */];
  
  UIImageView *logoView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"logo"]];
  [self.navigationItem setTitleView:logoView];
  [logoView release];
  

  要自定义后退按钮，您需要将其放在上一个视图控制器的 viewDidLoad 方法中（即此按钮返回的方法）：

  UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Shows"
      style:UIBarButtonItemStyleBordered target:nil action:nil];
  [self.navigationItem setBackBarButtonItem:backButton];
  [backButton release];
  

  如果要为应用程序的导航栏使用完全自定义的背景图像，则需要创建自定义 UINavigationBar 类别并在其 drawRect: 方法中绘制图像 . 像这样的东西：

  @implementation UINavigationBar (UINavigationBarBackgroundImage)
  
  - (void)drawRect:(CGRect)rect
  {
      [[UIImage imageNamed:@"navigation-bar"] drawInRect:rect];
  
      // Optionally you can set the tintColor here to go with the background
  }
  
  @end
  

  回复于 2024-05-02T15:50:06+08:00
• 0

  将图像添加到导航栏使用此代码

  - (void)drawRect:(CGRect)rect {
  
  UIColor *color = [UIColor blackColor]; //this use to set button color in FoxNew Site //button color
  UIImage *img  = [UIImage imageNamed: @"ImageName"];
  [img drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
  self.tintColor = color;
  
  }
  

  为UINavigationBar创建类别

  @implementation UINavigationBar (UINavigationBarCategory)
      - (void)drawRect:(CGRect)rect {
       }
  
  @end
  

  回复于 2024-05-02T15:50:06+08:00